MIC2951-3.3YMM - Micrel - Product.Network

MIC2950*/2951

150mA Low-Dropout Voltage Regulator

* MIC2950 Discontinuance September 2007.

MM8 is a registered trademark of Micrel, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

February 2010 M9999-021610

General Description

The MIC2950 and MIC2951 are “bulletproof” micropower

voltage regulators with very low dropout voltage (typically

40mV at light loads and 250mV at 100mA), and very low

quiescent current. Like their predecessors, the LP2950 and

LP2951, the quiescent current of the MIC2950/MIC2951

increases only slightly in dropout, thus pro-longing battery

life. The MIC2950/MIC2951 are pin for pin compatible with

the LP2950/LP2951, but offer lower dropout, lower

quiescent current, reverse battery, and automotive load

dump protection.

The key additional features and protection offered include

higher output current (150mA), positive transient protection

for up to 60V (load dump), and the ability to survive an

unregulated input voltage transient of –20V below ground

(reverse battery).

The plastic DIP and SOIC versions offer additional system

functions such as programmable output voltage and logic

controlled shutdown. The 3-pin TO-92 MIC2950 is pin-

compatible with the older 5V regulators.

These system functions also include an error ﬂag output

that warns of a low output voltage, which is often due to

failing batteries on the input. This may also be used as a

power-on reset. A logic-compatible shutdown input is also

available which enables the regulator to be switched on and

off. This part may also be pin-strapped for a 5 V output, or

programmed from 1.24 V to 29 V with the use of two

external resistors.

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

Features

• High accuracy 3.3, 4.85, or 5V, guaranteed 150mA

output

• Extremely low quiescent current

• Low-dropout voltage

• Extremely tight load and line regulation

• Very low temperature coefficient

• Use as regulator or reference

• Needs only 1.5µF for stability

• Current and thermal limiting

• Unregulated DC input can withstand –20V reverse

battery and +60V positive transients

MIC2951 Version Only

• Error flag warns of output dropout

• Logic-controlled electronic shutdown

• Output programmable from 1.24 to 29V

Applications

• Automotive electronics

• Voltage reference

• Avionics

• Cellular telephones

• Battery powered equipment

• SMPS post-regulator

• High efficiency linear power supplies

___________________________________________________________________________________________________________

Block Diagram

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The MIC2950 is available as either an -05 or -06 version.

The -05 and -06 versions are guaranteed for junction

temperatures from –40°C to +125°C; the -05 version has

a tighter output and reference voltage speciﬁcation

range over temperature. The MIC2951 is available as an

-02 or -03 version.

The MIC2950 and MIC2951 have a tight initial tolerance

(0.5% typical), a very low output voltage temperature

coefﬁcient which allows use as a low-power voltage

reference, and extremely good load and line regulation

(0.04% typical). This greatly reduces the error in the

overall circuit, and is the result of careful design

techniques and process control.

___________________________________________________________________________________________________________

Ordering Information

Part Number Voltage Accuracy Junction

Temperature Range Package Lead Finish

MIC2950-05BZ* 5.0V 0.5% –40° to +125°C 3-Pin TO-92 Standard

MIC2950-06BZ* 5.0V 1.0% –40° to +125°C 3-Pin TO-92 Standard

MIC2951-02BM 5.0V 0.5% –40° to +125°C 8-Pin SOIC Standard

MIC2951-03BM 5.0V 1.0% –40° to +125°C 8-Pin SOIC Standard

MIC2951-02BN** 5.0V 0.5% –40° to +125°C 8-Pin Plastic DIP Standard

MIC2951-03BN 5.0V 1.0% –40° to +125°C 8-Pin Plastic DIP Standard

MIC2951-03BMM 5.0V 1.0% –40° to +125°C 8-Pin MSOP Standard

MIC2951-3.3BM 3.3V 1.0% –40° to +125°C 8-Pin SOIC Standard

MIC2950-05YZ*/*** 5.0V 0.5% –40° to +125°C 3-Pin TO-92 Pb-Free

MIC2950-06YZ*/*** 5.0V 1.0% –40° to +125°C 3-Pin TO-92 Pb-Free

MIC2951-02YM*** 5.0V 0.5% –40° to +125°C 8-Pin SOIC Pb-Free

MIC2951-03YM*** 5.0V 1.0% –40° to +125°C 8-Pin SOIC Pb-Free

MIC2951-03YN*** 5.0V 1.0% –40° to +125°C 8-Pin Plastic DIP Pb-Free

MIC2951-03YMM*** 5.0V 1.0% –40° to +125°C 8-Pin MSOP Pb-Free

MIC2951-3.3YM*** 3.3V 1.0% –40° to +125°C 8-Pin SOIC Pb-Free

Note:

* TO-92 Package discontinuance notification issued September 2007. End-of-life-buy offer thru December 31, 2007. Contact factory for

additional information.

** Contact factory for Pb-Free version.

*** Pb-Free RoHS compliant with ‘high-melting solder’ exemption.

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Pin Configur ation

TO-92 (Z)

(Bottom View) DIP (N), SOIC (M), MM8® (MM)

(Top View)

Pin Description

Pin No.

MIC2950 Pin No.

MIC2951 Pin Name Pin Function

3 1 OUT Regulated Output.

2 SNS

Sense (Input): Output-voltage sensing end of internal voltage divider for ﬁxed 5V

operation. Not used in adjustable conﬁguration.

3 SHDN

Shutdown/Enable (Input): TTL compatible input. High = shutdown, low or open

= enable.

2 4 GND Ground.

5 ERR Error Flag (Output): Active low, open-collector output (low = error, ﬂoating =

normal).

6 TAP

3.3V/4.85/5V Tap: Output of internal voltage divider when the regulator is

conﬁgured for ﬁxed operation. Not used in adjustable conﬁguration.

7 FB

Feedback (Input): 1.235V feedback from internal voltage divider’s TAP (for ﬁxed

operation) or external resistor network (adjustable conﬁguration).

1 8 IN Unregulated Supply Input.

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Absolute Maximum Ratings(1)

Input Supply Voltage (VIN) (5).............................–20 to +60V

Feedback Input Voltage (VFB) (6, 7) ....................–1.5 to +26V

Shutdown Input Voltage (VSHDN) (6)...................–0.3 to +30V

Power Dissipation (PD) (4) ..........................Internally Limited

Lead Temperature (soldering, 5 sec.)........................ 260°C

Storage Temperature ................................–65°C to +150°C

ESD(3)

Operating Ratings(2)

Input Supply Voltage (VIN)................................+2.0 to +30V

Junction Temperature (TJ) (4)

MIC2950-05/MIC2950-06................... –40°C to +125°C

MIC2951-02/MIC2950-03................... –40°C to +125°C

Electrical Characteristics(1)

VIN = 6V; IL = 100µA; CL = 1µF; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C; Note 8; unless noted.

Parameter Condition Min Typ Max Units

MIC295x-02/-05 (±0.5%) 4.975 5.000 5.025 V

MIC295x-03/06 (±1%) 4.950 5.000 5.050 V

MIC2951-3.3 (±1%) 3.267 3.300 3.333 V

Output Voltage

TJ = 25°C

MIC2951-4.8 (±1%) 4.802 4.850 4.899 V

MIC295x-02/-05 (±0.5%) 4.950 5.050 V

MIC295x-03/-06 (±1%) 4.925 5.075 V

MIC2951-3.3 (±1%) 3.251 3.350 V

Output Voltage

–25°C ≤ TJ ≤ +85°C

MIC2951-4.8 (±1%) 4.777 4.872 V

MIC295x-02/-05 (±0.5%) 4.940 5.060 V

MIC295x-03/06 (±1%) 4.900 5.100 V

MIC2951-3.3 (±1%) 3.234 3.366 V

Output Voltage

Over Full Temperature Range

–40°C to +125°C

MIC2951-4.8 (±1%) 4.753 4.947 V

MIC295x-02/-05 (±0.5%), 100µA ≤ IL ≤ 150mA, TJ ≤ TJ(max) 4.930 5.070 V

MIC295x-03/-06 (±1%), 100µA ≤ IL ≤ 150mA, TJ ≤ TJ(max) 4.880 5.120 V

MIC2951-3.3 (±1%), 100µA ≤ IL ≤ 150mA, TJ ≤ TJ(max) 3.221 3.379 V

Output Voltage

Over Load Variation

MIC2951-4.8 (±1%), 100µA ≤ IL ≤ 150mA, TJ ≤ TJ(max) 4.733 4.967 V

MIC295x-02/-05 (±0.5%), Note 9 20 100

ppm/°C

MIC295x-03/-06 (±1%), Note 9 50 150

ppm/°C

MIC2951-3.3 (±1%), Note 9 50 150

ppm/°C

Output Voltage

Temperature Coefficient

MIC2951-4.8 (±1%), Note 9 50 150 ppm/°C

MIC295x-02/-05 (±0.5%), Notes 10, 11 0.03

0.10

0.20

MIC295x-03/-06 (±1%), Notes 10, 11 0.04

0.20

0.40

MIC2951-3.3 (±1%), Notes 10, 11 0.04

0.20

0.40

Line Regulation

MIC2951-4.8 (±1%), Notes 10, 11 0.04

0.20

0.40

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Parameter Condition Min Typ Max Units

MIC295x-02/-05 (±0.5%), 100µA ≤ IL ≤ 150mA, Note 10 0.04

0.10

0.20

MIC295x-03/-06 (±1%), 100µA ≤ IL ≤ 150mA, Note 10 0.10

0.20

0.30

MIC2951-3.3 (±1%), 100µA ≤ IL ≤ 150mA, Note 10 0.10

0.20

0.30

Load Regulation

MIC2951-4.8 (±1%), 100µA ≤ IL ≤ 150mA, Note 10 0.10

0.20

0.30

MIC295x-02/-03/-05/-06, IL = 100µA, Note 12 40

140

MIC295x-02/-03/-05/-06, IL = 100mA, Note 12 250 300 mV

MIC295x-02/-03/-05/-06, IL = 150mA, Note 12 300

450

600

MIC2951-3.3 (±1%), IL = 100µA, Note 12 40

150

MIC2951-3.3 (±1%), IL = 100mA, Note 12 250 350 mV

MIC2951-3.3 (±1%), IL = 150mA, Note 12 320

450

600

MIC2951-4.8 (±1%), IL = 100µA, Note 12 40

140

MIC2951-4.8 (±1%), IL = 100mA, Note 12 250 300 mV

Dropout Voltage

MIC2951-4.8 (±1%), IL = 150mA, Note 12 320

450

600

MIC295x-02/-03/-05/-06, IL = 100µA 120 180

300

µA

MIC295x-02/-03/-05/-06, IL = 100mA 1.7 2.5

3.5

MIC295x-02/-03/-05/-06, IL = 150mA 4 6

MIC2951-3.3 (±1%), IL = 100µA 100 180

300

µA

MIC2951-3.3 (±1%), IL = 100mA 1.7 2.5 mA

MIC2951-3.3 (±1%), IL = 150mA 4 6

MIC2951-4.8 (±1%), IL = 100µA 120 180

300

µA

MIC2951-4.8 (±1%), IL = 100mA 1.7 2.5

3.5

Ground Current

MIC2951-4.8 (±1%), IL = 150mA 4 6

MIC295x-02/-03/-05/-06, VIN = 4.5V, IL = 100µA 280 350

400

µA

MIC2951-3.3 (±1%), VIN = 3.0V, IL = 100µA 150 350

400

µA

Dropout Ground Current

MIC2951-4.8 (±1%), VIN = 4.3V, IL = 100µA 280 350

400

µA

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Parameter Condition Min Typ Max Units

Current Limit VOUT = 0V 300 400

450

Thermal Regulation Note 13 0.05 0.20 %/W

10Hz to 100kHz, CL = 1.5µF 430 µVRMS

10Hz to 100kHz, CL = 200µF 160 µVRMS

Output Noise

10Hz to 100kHz, CL = 3.3µF,

0.01µF bypass Feedback to Output

100 µVRMS

MIC295x-02/-05 (±0.5%) 1.220

1.200

1.235 1.250

1.260

MIC295x-03/06 (±1%) 1.210

1.200

1.235 1.260

1.270

MIC2951-3.3 (±1%) 1.210

1.200

1.235 1.260

1.270

Reference Voltage

MIC2951-4.8 (±1%) 1.210

1.200

1.235 1.260

1.270

MIC295x-02/-05 (±0.5%), Note 14 1.190 1.270 V

MIC295x-03/-06 (±1%), Note 14 1.185 1.285 V

MIC2951-3.3 (±1%), Note 14 1.185 1.285 V

Reference Voltage

MIC2951-4.8 (±1%), Note 14 1.185 1.285 V

Feedback Bias Current 20 40

MIC295x-02/05 (±0.5%), Note 9 20 ppm/°C

MIC295x-03/06 (±1%), Note 9 50 ppm/°C

MIC2951-3.3 (±1%), Note 9 50 ppm/°C

Reference Voltage

Temperature Coefficient

MIC2951-4.8 (±1%), Note 9 50 ppm/°C

Feedback Bias Current

Temperature Coefficient

0.1 nA/°C

Error Comparator (Flag)

Output Leakage Current

VOH = 30V 0.01 1.00

2.00

µA

Error Comparator (Flag)

Output Low Voltage (Flag)

VIN = 4.5V, IOL = 200µA 150 250

400

Error Comparator (Flag)

Upper Threshold Voltage

Note 15 40

60 mV

Error Comparator

Lower Threshold Voltage

Note 15 75

140

Error Comparator Hysteresis Note 15 15 mV

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Parameter Condition Min Typ Max Units

MIC295x-02/-05 (±0.5%)

Low

High

2.0

1.3

0.7 V

MIC295x-03/-06 (±1%)

Low

High

2.0

1.3

0.7 V

MIC2951-3.3 (±1%)

Low

High

2.0

1.3

0.7 V

Shutdown Input Logic Voltage

MIC2951-4.8 (±1%)

Low

High

2.0

1.3

0.7 V

VSHUTDOWN = 2.4V 30 50

100

µA

Shutdown Input Current

VSHUTDOWN = 30V 450 600

750

µA

Regulator Output Current

in Shutdown

Note 7 3

µA

Notes:

1. Exceeding the absolute maximum rating may damage the device.

2. The device is not guaranteed to function outside its operating rating.

3. Devices are ESD sensitive. Handling precautions are recommended.

4. The junction-to-ambient thermal resistance of the TO-92 package is 180°C/W with 0.4” leads and 160°C/W with 0.25” leads to a PC board. The

thermal resistance of the 8-pin DIP package is 105°C/W junction-to-ambient when soldered directly to a PC board. Junction-to-ambient thermal

resistance for the SOIC (M) package is 160°C/W. Junction-to-ambient thermal resistance for the MM8™ (MM) is 250°C/W.

5. The maximum positive supply voltage of 60V must be of limited duration (≤100ms) and duty cycle (≤1%). The maximum continuous supply voltage

is 30V.

6. When used in dual-supply systems where the output terminal sees loads returned to a negative supply, the output voltage should be diode-clamped

to ground.

7. VSHDN ≥ 2V, VIN ≤ 30V, VOUT = 0, with the FB pin connected to TAP.

8. Additional conditions for 8-pin devices are VFB = 5V, TAP and OUT connected to SNS (VOUT = 5V) and VSHDN ≤ 0.8V.

9. Output or reference voltage temperature coefﬁcient is deﬁned as the worst case voltage change divided by the total temperature range.

10. Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating

effects are covered in the speciﬁcation for thermal regulation.

11. Line regulation for the MIC2951 is tested at 150°C for IL = 1mA. For IL = 100µA and TJ = 125°C, line regulation is guaranteed by design to 0.2%.

See Typical Performance Characteristics for line regulation versus temperature and load current.

12. Dropout voltage is deﬁned as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V

differential. At very low values of programmed output voltage, the minimum input supply voltage of 2V (2.3V over temperature) must be taken into

account.

13. Thermal regulation is deﬁned as the change in output voltage at a time “t” after a change in power dissipation is applied, excluding load or line

regulation effects. Speciﬁcations are for a 50mA load pulse at VIN = 30V (1.25W pulse) for t = 10ms.

14. VREF ≤ VOUT ≤ (VIN – 1 V), 2.3V ≤ VIN ≤ 30V, 100µA < IL ≤ 150mA, TJ ≤ TJMAX.

15. Comparator thresholds are expressed in terms of a voltage differential at the FB terminal below the nominal reference voltage measured at 6V input.

To express these thresholds in terms of output voltage change, multiply by the error ampliﬁer gain = VOUT /VREF = (R1 + R2)/R2. For example, at a

programmed output voltage of 5V, the error output is guaranteed to go low when the output drops by 95mV x 5V/1.235V = 384mV. Thresholds

remain constant as a percent of VOUT as VOUT is varied, with the dropout warning occurring at typically 5% below nominal, 7.5% guaranteed.

16. Speciﬁcation for packaged product only.

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Typical Characteristics

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Typical Characteristics (continued)

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Typical Characteristics (c ontinued)

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Application Information

Automotive Applications

The MIC2950/2951 are ideally suited for automotive

applications for a variety of reasons. They will operate

over a wide range of input voltages, have very low

dropout voltages (40mV at light loads), and very low

quiescent currents. These features are necessary for use

in battery powered systems, such as automobiles. They

are also “bulletproof” devices; with the ability to survive

both reverse battery (negative transients up to 20V below

ground), and load dump (positive transients up to 60V)

conditions. A wide operating temperature range with low

temperature coefﬁcients is yet another reason to use

these versatile regulators in automotive designs

External Capacitors

A 1.5µF (or greater) capacitor is required between the

MIC2950/MIC2951 output and ground to prevent

oscillations due to instability. Most types of tantalum or

aluminum elec-trolytics will be adequate; ﬁlm types will

work, but are costly and therefore not recommended.

Many aluminum electrolytics have electrolytes that freeze

at about –30°C, so solid tantalums are recomm-ended for

operation below –25°C. The important parameters of the

capacitor are an effective series resistance of about 5Ω or

less and a resonant frequency above 500kHz. The value

of this capacitor may be increased without limit.

At lower values of output current, less output capacitance

is required for output stability. The capacitor can be

reduced to 0.5µF for current below 10mA or 0.15µF for

currents below 1 mA. Using the 8-pin versions at voltages

below 5V runs the error ampliﬁer at lower gains so that

more output capacitance is needed. For the worst-case

situation of a 150mA load at 1.23V output (Output shorted

to Feedback) a 5µF (or greater) capacitor should be used.

The MIC2950 will remain stable and in regulation with no

load in addition to the internal voltage divider, unlike many

other voltage regulators. This is especially important in

CMOS RAM keep-alive applications. When setting the

output voltage of the MIC2951 version with external

resistors, a minimum load of 1µA is recomm-ended.

A 0.1µF capacitor should be placed from the MIC2950/

MIC2951 input to ground if there is more than 10 inches

of wire between the input and the AC ﬁlter capacitor or if a

battery is used as the input.

Stray capacitance to the MIC2951 Feedback terminal (pin

7) can cause instability. This may especially be a problem

when using high value external resistors to set the output

voltage. Adding a 100pF capacitor between Output and

Feedback and increasing the output capacitor to at least

3.3µF will remedy this.

Error Detection Comparator Output

A logic low output will be produced by the comparator

whenever the MIC2951 output falls out of regulation by

more than approximately 5%. This ﬁgure is the

comparator’s built-in offset of about 60mV divided by the

1.235V reference voltage. (Refer to the block diagram on

Page 1). This trip level remains “5% below normal”

regardless of the programmed output voltage of the

MIC2951. For example, the error ﬂag trip level is typically

4.75V for a 5V output or 11.4V for a 12V output. The out

of regulation condition may be due either to low input

voltage, current limiting, thermal limiting, or overvolt-age

on input (over

≅

40V).

Figure 1 is a timing diagram depicting the /ERROR signal

and the regulated output voltage as the MIC2951 input is

ramped up and down. The /ERROR signal becomes valid

(low) at about 1.3V input. It goes high at about 5V input

(the input voltage at which VOUT = 4.75—for 5.0V

applications). Since the MIC2951’s dropout voltage is

load-dependent (see curve in Typical Performance

Characteristics), the input voltage trip point (about 5V) will

vary with the load current. The output voltage trip point

does not vary with load.

The error comparator has an open-collector output which

requires an external pull-up resistor. Depending on

system requirements, this resistor may be returned to the

output or some other supply voltage. In determining a

value for this resistor, note that while the output is rated to

sink 200µA, this sink current adds to battery drain in a low

battery condition. Suggested values range from 100k to

1MΩ. The resistor is not required if this output is unused.

Programming the Output Voltage (MIC2951)

The MIC2951 may be pin-strapped for 5V (or 3.3V or

4.85V) using its internal voltage divider by tying Pin 1

(output) to Pin 2 (sense) and Pin 7 (feedback) to Pin 6 (5V

Tap). Alternatively, it may be programmed for any output

voltage between its 1.235V reference and its 30V

maximum rating. An external pair of resistors is required,

as shown in Figure 2.

The complete equation for the output voltage is:

1FB

REFOUT R I

1VV +

⎭

⎬

⎫

⎩

⎨

⎧+×=

where VREF is the nominal 1.235 reference voltage and IFB

is the feedback pin bias current, nominally –20nA. The

minimum recommended load current of 1µA forces an

upper limit of 1.2MΩ on the value of R2, if the regulator

must work with no load (a condition often found in CMOS

in standby), IFB will produce a 2% typical error in VOUT

which may be eliminated at room temperature by trimming

R1. For better accuracy, choosing R2 = 100k reduces this

error to 0.17% while increasing the resistor program

current to 12µA.

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Reducing Output Noise

In some applications it may be advantageous to reduce

the AC noise present at the output. One method is to

reduce the regulator bandwidth by increasing the size of

the output capacitor. This is the only method by which

noise can be reduced on the 3 lead MIC2950 and is

relatively inefﬁcient, as increasing the capacitor from 1µF

to 220µF only decreases the noise from 430µV to 160µV

rms for a 100kHz bandwidth at 5V output.

Noise can be reduced fourfold by a bypass capacitor

across R1, since it reduces the high frequency gain from 4

to unity. Pick:

200HzR2

BYPASS •

≅

or about 0.01µF. When doing this, the output capacitor

must be increased to 3.3µF to maintain stability. These

changes reduce the output noise from 430µV to

100µVrms for a100kHz bandwidth at 5V output. With the

bypass capacitor added, noise no longer scales with

output voltage so that improvements are more dramatic at

higher output voltages.

Figure 1. ERROR Output Timing

Figure 2. Adjustable Regulator

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Typical Applications

5V Regulator with 2.5V Sleep Function Wide Input Voltage Range Current Limiter

Low Drift Current Source 5V Current Limiter

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Typical Applications

Regulator with Early Warning and Auxiliary Output

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Typical Applications

Latch Off When Error Flag Occurs Open Circuit Detector for 4mA to 20mA Current Loop

Regulator with State-of-Charge Indicator

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Typical Applications

Low Battery Disconnect

System Over Temperature Pro t ectio n Circuit

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Schematic Diagram

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Package Information

8-Pin SOIC (M)

0.380 (9.65)

0.370 (9.40) 0.135 (3.43)

0.125 (3.18)

PIN 1

DIMENSIONS:

INCH (MM)

0.018 (0.57)

0.100 (2.54)

0.013 (0.330)

0.010 (0.254)

0.300 (7.62)

0.255 (6.48)

0.245 (6.22)

0.380 (9.65)

0.320 (8.13)

0.0375 (0.952)

0.130 (3.30)

8-Pin Plastic DIP (N)

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8-Pin MSOP (MM)

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10° typ.

5° typ.

0.185 (4.699)

0.175 (4.445)

0.185 (4.699)

0.175 (4.445)

0.085 (2.159) Diam.

0.500 (12.70) Min.

0.090 (2.286) typ.

0.0155 (0.3937)

0.0145 (0.3683)

Seating Plane

0.025 (0.635) Max

Uncontrolled

Lead Diamet er

0.016 (0.406)

0.014 (0.356)

0.105 (2.667)

0.095 (2.413)

0.055 (1.397)

0.045 (1.143)

0.090 (2.286) Radius, typ

0.145 (3.683)

0.135 (3.429)

0.055 (1.397)

0.045 (1.143)

BOTTOM VIEW

TO-92 (Z)

MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA

TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com

The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its

use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.

Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product

can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant

into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A

Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully

indemnify Micrel for any damages resulting from such use or sale.