MIC2295
High Power Density 1.2A
Boost Regulator
MLF and MicroLeadFrame is a trademark of Amkor Technology
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
408
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
April 2005
M9999-042605
(408) 955-1690
General Description
The MIC2295 is a 1.2Mhz, PWM dc/dc boost switching
regulator available in low profile Thin SOT23 and 2mm x
2mm MLF™ package options. High power density is
achieved with the MIC2295’s internal 34V / 1.2A switch,
allowing it to power large loads in a tiny footprint.
The MIC2295 implements constant frequency 1.2MHz
PWM current mode control. The MIC2295 offers internal
compensation that offers excellent transient response and
output regulation performance. The high frequency
operation saves board space by allowing small, low-profile
external components. The fixed frequency PWM scheme
also reduces spurious switching noise and ripple to the
input power source.
The MIC2295 is available in a low-profile Thin SOT23 5-
lead package and a 2mm x2mm 8-lead MLF™ leadless
package. The 2mm x 2mm MLF™ package option has an
output over-voltage protection feature.
The MIC2295 has an operating junction temperature range
of –40°C to +125°C
Features
• 2.5V to 10V input voltage range
• Output voltage adjustable to 34V
• 1.2A switch current
• 1.2MHz PWM operation
• Stable with small size ceramic capacitors
• High efficiency
• Low input and output ripple
• <1µA shutdown current
• UVLO
• Output over-voltage protection (MIC2295BML)
• Over temperature shutdown
• Thin SOT23-5 package option
• 2mm x 2mm leadless 8-lead MLF™ package option
• –40
o
C to +125
o
C junction temperature range
Applications
• Organic EL power supplies
• 3.3V to 5V/500mA conversion
• TFT-LCD bias supplies
• Flash LED drivers
• Positive and negative output regulators
• SEPIC converters
• Positive to negative Cuk converters
• 12V supply for DSL applications
• Multi-output dc/dc converters
10µH
R2
4.53K
R1
49.9k
MIC2295BML
VIN
VIN
1-Cell
Li Ion
3V to 4.2V
VOUT
15V/100mA
EN FB
AGND
C1
2.2µF
2.2µF
PGND
SW
OVP
L1
10µH
R2
3.3k
R1
10k
MIC2295 BD5
VIN
1-Cell
Li Ion
V
OUT
5V/500mA
EN
SW
FB
GND
V
IN
C1
2.2µF
10µF
Micrel, Inc. MIC2295
April 2005
2 M9999-042605
(408) 955-1690
Ordering Information
Part Number Marking Code
Standard Lead-Free
Output Over
Voltage Protection Standard Lead-Free
Junction Temperature
Range Package
MIC2295BD5 MIC2295YD5 — SVAA SVAA -40°C to 125°C Thin SOT23-5
MIC2295BML MIC2295YML 34V SXA SXA -40°C to 125°C 2mm x2mm
MLF-8L
Pin Configur ation
Pin Description
MIC2295BD5
Thin SOT-23-5 MIC2295BML
2x2 MLF-8L Pin Name Pin Function
1 7 SW Switch Node (Input): Internal power BIPOLAR collector.
2 — GND Ground (Return): Ground.
3 6 FB
Feedback (Input): 1.24V output voltage sense node. V
OUT
=
1.24V ( 1 + R1/R2)
4 3 EN
Enable (Input): Logic high enables regulator. Logic low
shuts down regulator.
5 2 VIN Supply (Input): 2.5V to 10V input voltage.
— 1 OVP
Output Over-Voltage Protection (Input): Tie this pin to V
OUT
to clamp the output voltage to 34V maximum in fault
conditions. Tie this pin to ground if OVP function is not
required.
— 5 N/C No connect. No internal connection to die.
— 4 AGND Analog ground
— 8 PGND Power ground
— EP GND Ground (Return). Exposed backside pad.
Micrel, Inc. MIC2295
April 2005
3 M9999-042605
(408) 955-1690
Absolute Maximum Rating (1)
Supply voltage (V
IN
)........................................................12V
Switch voltage (V
SW
) ........................................-0.3V to 34V
Enable pin voltage (V
EN
)....................................... -0.3 to V
IN
FB Voltage (V
FB
)...............................................................6V
Switch Current (I
SW
) ......................................................2.5A
Ambient Storage Temperature (T
S
)............-65°C to +150°C
ESD Rating
(3)
................................................................. 2KV
Operating Range (2)
Supply Voltage (V
IN
).......................................... 2.5V to 10V
Junction Temperature Range (T
J
)..............-40°C to +125°C
Package Thermal Impedance
θ
JA
2x2 MLF-8 lead ............................................93°C/W
θ
JA
Thin SOT-23-5 lead ...................................256°C/W
Electrical Characteristics
T
A
=25
o
C, V
IN
=V
EN
= 3.6V, V
OUT
= 15V, I
OUT
= 40mA, unless otherwise noted. Bold values indicate -40°C ≤ T
J
≤ 125°C.
Symbol Parameter Condition Min Typ Max Units
V
IN
Supply Voltage Range 2.5 10 V
V
UVLO
Under-Voltage Lockout 1.8 2.1 2.4 V
I
VIN
Quiescent Current V
FB
= 2V (not switching) 2.8 5 mA
I
SD
Shutdown Current V
EN
= 0V
(4)
0.1 1 µA
V
FB
Feedback Voltage (+/-1%) 1.227 1.24 1.252
(+/-2%) (Over Temp) 1.215 1.265
V
I
FB
Feedback Input Current V
FB
= 1.24V -450 nA
Line Regulation 3V ≤ V
IN
≤ 5V 0.04 1 %
Load Regulation 5mA ≤ I
OUT
≤ 40mA 1.5 %
D
MAX
Maximum Duty Cycle 85 90 %
I
SW
Switch Current Limit Note 5 1.2 1.7 A
V
SW
Switch Saturation Voltage I
SW
= 1.2A 600 mV
I
SW
Switch Leakage Current V
EN
= 0V, V
SW
= 10V 0.01 5 µA
V
EN
Enable Threshold TURN ON
TURN OFF
1.5
0.4 V
I
EN
Enable Pin Current V
EN
= 10V 20 40 µA
f
SW
Oscillator Frequency 1.05 1.2 1.35 MHz
V
OVP
Output over-voltage protection MIC2295BML only 30 32 34 V
150
°C
T
J
Over-Temperature Threshold
Shutdown Hysteresis 10
°C
Notes:
1. Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when
operating the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction
temperature, T
J(Max)
, the junction-to-ambient thermal resistance, θ
JA
, and the ambient temperature, T
A
. The maximum allowable power
dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
2. This device is not guaranteed to operate beyond its specified operating rating.
3. IC devices are inherently ESD sensitive. Handling precautions required. Human body model rating: 1.5K in series with 100pF.
4. I
SD
= I
VIN
.
5. Guaranteed by design.
Micrel MIC2295
April 2005
4 M9999-042605
(408) 955-1690
Typical Characteristics
MIC2295 -5V Output
30
35
40
45
50
55
60
65
70
75
80
0 100 200 300
Output Current
Vin=4V
Vin=5V
Vin=5.5V
VIN
EN
SW
FB
GND
MIC2295BML
1
2
3
4
5
VOUT = -5V @ 0.15A
4.7uF/
6.3V
CMHSH5-2L
10K
2.49K
1F/
6.3V
VIN = 5V
R1
R2
L1 L2
C1 C2
C3
1uF/16V
L1 = Murata LQH32CN4R7M23
L2 = Murata LQH32CN4R7M23
+
-
1uF/
6.3V
C4
R3
10K
MIC6211
OVP
15V Short circui
t
protected Boost
60
65
70
75
80
85
0 20406080100
OUTPUT CURRENT (mA
)
Vin=2.5
V
Vin=3V
VIN
EN
SW
FB
GND
MIC2295
1-Cell
Li Ion
1
2
3
4
5
V
OUT
= 15V / 50m
A
4.7µH
4.7µF/
25V
Sumida
CDRH4D18
160K
10K
10µF/
6.3V
C
IN
= JMK212BJ106MG (Taiyo Yuden)
0.1 uF /
6.3 V
Micrel MIC2295
April 2005
5 M9999-042605
(408) 955-1690
MIC2295 SEPIC 5V Outpu
t
64
66
68
70
72
74
76
78
0 50 100 150 200 250
OUTPUT CURRENT (mA
)
Vin=3V
Vin=3.5V
Vin=4V
Vin=5V
Vin=5.5V
VIN
EN
SW
FB
GND
MIC2295BML
1
2
3
4
5
V
OUT
= 5V @ 0.3A
4.7uH
4.7uF/
6.3V
MBRX140
43.2K
14.3K
F/
6.3V
V
IN
= 3.3V to 5.5V
R1
R2
4.7uH
L1
L2
C1 C2
C3
1uF/16V
L1 = Murata LQH32CN4R7M23
L2 = Murata LQH32CN4R7M23
470pF/
10V
C4
5V MIC2295 SEPIC with on
coupled inductor
30
35
40
45
50
55
60
65
70
75
80
0 50 100 150 200 250 300
LOAD CURRENT (m
A
Vin=2.5
V
Vin=3.3
V
Vin=5V
1
2
3
4
5
VIN
EN
SW
FB
GND
MIC2295BML
VOUT = 5V @ 0.3
A
MBRX140
VIN = 3.5V to 5.5V
R1
43.2k
R2
14.3k
L1
4.7µH
L1
4.7µH
C1
4.7µF
6.3V
C2
4.7µF
6.3V
C3
1µF/16V
L1 = Sumida CL5DS 1 1/HP
C4
470pF
10V
MIC2295 12V output Efficiency
60
65
70
75
80
85
90
0 50 100 150 200
OUTPUT CURRENT (mA)
Vin=3.3V
Vin=4.2V
Vin=3.6V
Max Duty Cycle vs Input Voltage
70
75
80
85
90
95
100
2.5 4 5.5 7 8.5 10
SUPPLY VOLTAGE (V)
Input Voltage
vs. Supply Voltage
0.5
0.7
0.9
1.1
1.3
1.5
2.5 4 5.5 7 8.5 10
SUPPLY VOLTAGE (V)
Switch Voltage
vs. Supply Voltage
0
50
100
150
200
250
300
2.5 4.5 6.5 8.5
Input Voltage (V)
MIC2295 15V output Efficiency
60
65
70
75
80
85
90
0 50 100 150 200
OUTPUT CURRENT (mA)
Vin=3.3V
Vin=4V
Vin=4.2V
1.10
1.12
1.14
1.16
1.18
1.20
1.22
1.24
1.26
1.28
1.30
-40 -20 0 20 40 60 80 100120
FEEDBACK VOLTAGE (V)
TEMPERATURE (°C)
Micrel MIC2295
April 2005
6 M9999-042605
(408) 955-1690
0.8
0.9
1.0
1.1
1.2
1.3
1.4
-40 -20 0 20 40 60 80 100 120
FREQUENCY (MHz)
TEMPERATURE (°C)
Frequency
vs. Temperature
11.8
11.85
11.9
11.95
12
12.05
12.1
12.15
12.2
0 25 50 75 100 125 150
OUTPUT VOLTAGE (V)
LOAD (mA)
Load Regulation
V
IN =
3.6V
80
82
84
86
88
90
92
94
96
98
100
2.5 4 5.5 7 8.5 10
MAXIMUM DUTY CYCLE (%)
SUPPLY VOLTAGE (V)
Maximum Duty Cycle
vs. Supply Voltage
0
100
200
300
400
500
600
700
-40 -20 0 20 40 60 80 100 120
FEEDBACK CURRENT (nA)
TEMPERATURE (°C)
FB Pin Current
vs. Temperature
Micrel MIC2295
April 2005
7 M9999-042605
(408) 955-1690
Functional Characteristics
Line Transient Response
Time (400µs/div)
OUTPUT VOLTAGE
(1mV/div) AC-Coupled
INPUT VOLTAGE
(2V/div)
4.2V
3.2V
12VOUT
150mA Load
Switching Waveforms
Time (400ns/div)
OUTPUT VOLTAGE
(50mV/div)
INDUCTOR CURRENT
(500mA/div)
SWITCH SATURATION
(5V/div)
VSW
Output Voltage
3.6VIN
12VOUT
150mA
Inductor Current
(10µH)
TIME (400µs/div.)
LOAD CURRENT
(2V/div.) OUTPUT VOLTAGE
(5V/div.)
VIN = 3.6V
Enable Characteristics
VIN=3.6V
3.6VIN
12VOUT
150mA Load
Micrel MIC2295
April 2005
8 M9999-042605
(408) 955-1690
Functional Description
The MIC2295 is a high power density, PWM dc/dc boost
regulator. The block diagram is shown in Figure 1. The
MIC2295 is composed of an oscillator, slope
compensation ramp generator, current amplifier, gm error
amplifier, PWM generator, and a 1.2A bipolar output
transistor. The oscillator generates a 1.2MHz clock. The
clock’s two functions are to trigger the PWM generator that
turns on the output transistor, and to reset the slope
compensation ramp generator. The current amplifier is
used to measure the switch current by amplifying the
voltage signal from the internal sense resistor. The output
of the current amplifier is summed with the output of the
slope compensation ramp generator. This summed
current-loop signal is fed to one of the inputs of the PWM
generator.
The g
m
error amplifier measures the feedback voltage
through the external feedback resistors and amplifies the
error between the detected signal and the 1.24V reference
voltage. The output of the g
m
error amplifier provides the
voltage-loop signal that is fed to the other input of the
PWM generator. When the current-loop signal exceeds
the voltage-loop signal, the PWM generator turns off the
bipolar output transistor. The next clock period initiates the
next switching cycle, maintaining constant frequency
current-mode PWM control
GND
CA
PWM
Generator
Ramp
Generator
1.2MHz
Oscillator
SW
ENFB OVP*VIN
1.24V
*
OVP available on MLF
TM
package option only.
g
m
OVP*
Σ
V
REF
MIC2295
MIC2295 Block Diagram
Micrel MIC2295
April 2005
9 M9999-042605
(408) 955-1690
Application Information
DC to DC PWM Boost Conversion
The MIC2295 is a constant frequency boost converter. It
operates by taking a DC input voltage and regulating a
higher DC output voltage. Figure 2 shows a typical circuit.
L1
10mH
C2
10µF
R2
R1
MIC2288BML
VIN
V
IN
V
OUT
EN
SW
FB
GND
GND
OVP
GND
C1
2.2µF
D1
Figure 2
Boost regulation is achieved by turning on an internal
switch, which draws current through the inductor (L1).
When the switch turns off, the inductor’s magnetic field
collapses, causing the current to be discharged into the
output capacitor through an external Schottkey diode (D1).
Voltage regulation is achieved my modulating the pulse
width or pulse width modulation (PWM).
Duty Cycle Considerations
Duty cycle refers to the switch on-to-off time ratio and can
be calculated as follows for a boost regulator;
D=1−V
IN
V
OUT
The duty cycle required for voltage conversion should be
less than the maximum duty cycle of 85%. Also, in light
load conditions where the input voltage is close to the
output voltage, the minimum duty cycle can cause pulse
skipping. This is due to the energy stored in the inductor
causing the output to overshoot slightly over the regulated
output voltage. During the next cycle, the error amplifier
detects the output as being high and skips the following
pulse. This effect can be reduced by increasing the
minimum load or by increasing the inductor value.
Increasing the inductor value reduces peak current, which
in turn reduces energy transfer in each cycle.
Over Voltage Protection
For MLF package of MIC2295, there is an over voltage
protection function. If the feedback resistors are
disconnected from the circuit or the feedback pin is
shorted to ground, the feedback pin will fall to ground
potential. This will cause the MIC2295 to switch at full
duty-cycle in an attempt to maintain the feedback voltage.
As a result the output voltage will climb out of control. This
may cause the switch node voltage to exceed its maximum
voltage rating, possibly damaging the IC and the external
components. To ensure the highest level of protection, the
MIC2295 OVP pin will shut the switch off when an over-
voltage condition is detected saving itself and other
sensitive circuitry downstream.
Component Selection
Inductor
Inductor selection is a balance between efficiency,
stability, cost, size and rated current. For most applications
a 10µH is the recommended inductor value. It is usually a
good balance between these considerations. Efficiency is
affected by inductance value in that larger inductance
values reduce the peak to peak ripple current. This has an
effect of reducing both the DC losses and the transition
losses.
There is also a secondary effect of an inductors DC
resistance (DCR). The DCR of an inductor will be higher
for more inductance in the same package size. This is due
to the longer windings required for an increase in
inductance. Since the majority of input current (minus the
MIC2295 operating current) is passed through the
inductor, higher DCR inductors will reduce efficiency.
Also, to maintain stability, increasing inductor size will
have to be met with an increase in output capacitance.
This is due to the unavoidable “right half plane zero” effect
for the continuous current boost converter topology. The
frequency at which the right half plane zero occurs can be
calculated as follows;
Frhpz =V
IN
2
V
OUT
×L×I
OUT
×2
π
The right half plane zero has the undesirable effect of
increasing gain, while decreasing phase. This requires that
the loop gain is rolled off before this has significant effect
on the total loop response. This can be accomplished by
either reducing inductance (increasing RHPZ frequency) or
increasing the output capacitor value (decreasing loop
gain).
Output Capacitor
Output capacitor selection is also a trade-off between
performance, size and cost. Increasing output capacitance
will lead to an improved transient response, but also an
increase in size and cost. X5R or X7R dielectric ceramic
capacitors are recommended for designs with the
MIC2295. Y5V values may be used, but to offset their
tolerance over temperature, more capacitance is required.
The following table shows the recommended ceramic
(X5R) output capacitor value vs. output voltage.
Output Voltage Recommended Output
Capacitance
<6V 10µF
<16V 4.7µF
<34V 2.2µF
Micrel
MIC2295
April 2005 10
M9999-042605
(408) 955-1690
Diode Selection
The MIC2295 requires an external diode for operation. A
Schottkey diode is recommended for most applications
due to their lower forward voltage drop and reverse
recovery time. Ensure the diode selected can deliver the
peak inductor current and the maximum reverse voltage is
rated greater than the output voltage.
Input Capacitor
A minimum 1µF ceramic capacitor is recommended for
designing with the MIC2295. Increasing input capacitance
will improve performance and greater noise immunity on
the source. The input capacitor should be as close as
possible to the inductor and the MIC2295, with short traces
for good noise performance.
Feedback Resistors
The MIC2295 utilizes a feedback pin to compare the
output to an internal reference. The output voltage is
adjusted by selecting the appropriate feedback resistor
values. The desired output voltage can be calculated as
follows;
V
OUT =V
REF ×R1
R2 +1
⎛
⎝
⎜
⎞
⎠
⎟
Where VREF is equal to 1.24V.
Duty-Cycle
The MIC2295 is a general-purpose step up DC-DC
converter. The maximum difference between the input
voltage and the output voltage is limited by the maximum
duty-cycle (Dmax) of the converter. In the case of MIC2295,
DMAX = 85%. The actual duty cycle for a given application
can be calculated as follows:
D=1−V
IN
V
OUT
The actual duty-cycle, D, cannot surpass the maximum
rated duty-cycle, Dmax.
Output Voltage Setting
The following equation can be used to select the feedback
resistors R1 and R2 (see figure 1).
R1=R2⋅V
OUT
1.24V −1
⎡
⎣
⎢
⎤
⎦
⎥
A high value of R2 can increase the whole system
efficiency, but the feedback pin input current (IFB) of the gm
operation amplifier will affect the output voltage. The R2
resistor value must be less than or equal to 5kΩ (R2 ≤ 5
kΩ).
Inductor Selection
In MIC2295, the switch current limit is 1.2A. The selected
inductor should handle at least 1.2A current without
saturating. The inductor should have a low DC resistor to
minimize power losses. The inductor’s value can be 4.7µH
to 10µH for most applications.
Capacitor Selection
Multi-layer ceramic capacitors are the best choice for input
and output capacitors. They offer extremely low ESR,
allowing very low ripple, and are available in very small,
cost effective packages. X5R dielectrics are preferred. A
4.7µF to 10µF output capacitor is suitable for most
applications.
Diode Selection
For maximum efficiency, Schottky diode is recommended
for use with MIC2295. An optimal component selection can
be made by choosing the appropriate reverse blocking
voltage rating and the average forward current rating for a
given application. For the case of maximum output voltage
(34V) and maximum output current capability, a 40V / 1A
Schottky diode should be used.
Open-Circuit Protection
For MLF package option of MIC2295, there is an output
over-voltage protection function that clamps the output to
below 34V in fault conditions. Possible fault conditions
may include: if the device is configured in a constant
current mode of operation and the load opens, or if in the
standard application the feedback resistors are
disconnected from the circuit. In these cases the FB pin
will pull to ground, causing the MIC2295 to switch with a
high duty-cycle. As a result, the output voltage will climb
out of regulation, causing the SW pin to exceed its
maximum voltage rating and possibly damaging the IC and
the external components. To ensure the highest level of
safety, the MIC2295 has a dedicated pin, OVP, to monitor
and clamp the output voltage in over-voltage conditions.
The OVP function is offered in the 2mm x 2mm MLF
-
8L
package option
only. To disable OVP function, tie the
OVP pin to ground
Micrel
MIC2295
April 2005 11
M9999-042605
(408) 955-1690
L1
4.7µH
C2
10µF
16V
R2
1.87k
R1
5.62k
MIC2295BML
VIN
V
IN
3V to 4.2V
V
OUT
5V @ 400mA
EN
SW
FB
GND
GND
OVP
GND
C1
4.7µF
6.3V
D1
470 pF
3.3V
IN
to 5V
OUT
@ 400mA
L1
10µH
C2
4.7µF
16V
R2
5k
R1
31.6k
MIC2295BML
VIN
VIN
3V to 4.2V
VOUT
9V @ 180mA
EN
SW
FB
GND
GND
OVP
GND
C1
2.2µF
10V
D1
3V
IN
- 4.2V
IN
to 9V
OUT
@ 180mA
L1
10µH
C2
4.7µF
16V
R2
5k
R1
43.2k
MIC2295BML
VIN
V
IN
3V to 4.2V
V
OUT
12V @ 120mA
EN
SW
FB
GND
GND
OVP
GND
C1
2.2µF
10V
D1
3V
IN
- 4.2Vin to 12V
OUT
@ 120mA
L1
10µH
C2
4.7µF
16V
R2
5k
R1
43.2k
MIC2295BML
VIN
V
IN
3V to 5V
V
OUT
12V @ 120mA
EN
SW
FB
GND
GND
OVP
GND
C1
2.2µF
10V
D1
3V
IN
– 5V
IN
to 12V
OUT
@ 120mA
L1
10µH
C2
2.2µF
16V
R2
5k
R1
43.2k
MIC2295BML
VIN
V
IN
3V to 5V
V
OUT
12V @ 120mA
EN
SW
FB
GND
GND
OVP
GND
C1
2.2µF
10V
D1
3V
IN
– 5V
IN
to 12V
OUT
@ 120mA
L1
4.7µH
C2
4.7µF
16V
R2
1.87k
R1
5.62k
MIC2295BML
VIN
V
IN
3V to 4.2V
V
OUT
5V @ 400mA
EN
SW
FB
GND
GND
OVP
GND
C1
4.7µF
6.3V
D1
470 pF
3V
IN
- 4.2V
IN
to 5V
OUT
@ 400mA
L1
10µH
C2
4.7µF
16V
R2
5k
R1
43.2k
MIC2295BML
VIN
V
IN
3V to 5V
V
OUT
12V @300mA
EN
SW
FB
GND
GND
OVP
GND
C1
2.2µF
10V
D1
3V
IN
to 5V
IN
to 12V
OUT
@ 300mA
L1
10µH
C2
2.2µF
25V
R2
5k
R1
43.2k
MIC2295BML
VIN
V
IN
5V
V
OUT
24V@80mA
EN
SW
FB
GND
GND
OVP
GND
C1
2.2µF
10V
D1
5V
IN
to 24V
OUT
@ 80mA
Micrel
MIC2295
April 2005 12
M9999-042605
(408) 955-1690
Package Information
8-Pin Package MLF (ML)
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.
© 2004 Micrel, Incorporated.