RT9163
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Features
zz
zz
zLow Dropout, Maximum 1.4V at 500mA
zz
zz
zFa st Tran sient Response
zz
zz
z±±
±±
±2% Total Output Regulation
zz
zz
z0.4% Line Regulation
zz
zz
z0.4% Load Regulation
zz
zz
zTO-92, SOT -89, SOT -223, a nd TO-252 Pa ckages
zz
zz
zRoHS Compliant and 100% Lead (Pb)-Free
Pin Configurations
Applications
z5V to 3.3V Linear Regulator
zLow V oltage Microcontroller, DSP,.... etc. Power Supply
zLinear Regulator for LAN Card and CD-ROM
500mA Low Dropout Positive Voltage Regulator
Ordering Information
General Description
The RT9163 is a positive low dropout regulator designed
for a pplications requiring low dropout perf ormance at full
rated current. The device is available in fixed output
voltage of 3.3V, 3.5V, and 5.0V. The RT9163 provides
excellent regulation over line, load, and temperature
variations.
The other features include low dropout performance at a
maximum of 1.4V at 500mA, fast transient response,
internal current limiting, and thermal shutdown protection
of the output devices. The RT9163 is a three-terminal
regulator available in surface mount SOT-89, SOT -223,
and T O-252 packages.
(TOP VIEW)
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
123
VOUT
GND
(TAB) VIN
TO-252
VOUT GND
(TAB) VIN
123
SOT -223 (T ype-I)
SOT -89 (L-T ype)
SOT-89
TO-92 (L-T ype)
1
2
3
VIN
GND
VOUT
Note :
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
GND VIN
(TAB) VOUT
123
VOUT GND
(TAB) VIN
123
RT9163-
Package Type
ZL : TO-92 (L-Type)
X : SOT-89
XL : SOT- 89 (L-Type)
L : TO-252
G : SOT-223 (Type-I)
GL : SOT-223 (Ty pe - II)
GT : SOT-223 Type-III)
GF : SOT-223 (Type-IV)
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Output Voltage
33 : 3.3V
35 : 3.5V
50 : 5.0V
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Function Block Diagram
Typical Application Circuit
Functional Pin Description
Pin Name Pi n Funct ion
VOUT Output Voltage.
GND Ground.
VIN Power Input.
VIN GND
(TAB) VOUT
123
SOT -223 (Type-II)
GND VOUT
(TAB) VIN
123
SOT -223 (Type-III)
GND VIN
(TAB) VOUT
123
SOT -223 (Type-IV)
Current
Limiting
Sensor
Thermal
Shutdown
+
-VOUT
Buffer
Amplifier
R4
R1
R3
R2
VIN
Q1
Q2
Error
Amplifier
VREF
VIN GND
VOUT
RT9163
+
+
COUT
10uF
CIN
10uF
VIN VOUT
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DS9163-28 April 2011 www.richtek.com
Absolute Maximum Ratings
zInput V oltage ---------------------------------------------------------------------------------------------------------------- 15V
zPower Dissipation, PD @ TA = 25°C
TO-92 ------------------------------------------------------------------------------------------------------------------------- 0.625W
SOT-89 ----------------------------------------------------------------------------------------------------------------------- 0.571W
SOT-223 --------------------------------------------------------------------------------------------------------------------- 0.740W
TO-252 ----------------------------------------------------------------------------------------------------------------------- 1.471W
zPa ckage Thermal Resistance (Note 1)
TO-92, θJA ------------------------------------------------------------------------------------------------------------------- 160°C/W
SOT-89, θJC ----------------------------------------------------------------------------------------------------------------- 48°C/W
SOT-89, θJA ----------------------------------------------------------------------------------------------------------------- 175°C/W
SOT-223, θJC ---------------------------------------------------------------------------------------------------------------- 19°C/W
SOT-223, θJA ---------------------------------------------------------------------------------------------------------------- 135°C/W
TO-252, θJC ----------------------------------------------------------------------------------------------------------------- 7.5°C/W
TO-252, θJA ------------------------------------------------------------------------------------------------------------------ 68°C/W
zOperating Junction Temperature Ra nge ------------------------------------------------------------------------------- −40°C to 125°C
zStorage T emperature Range --------------------------------------------------------------------------------------------- −65°C to 150°C
Electrical Characteristics
(VIN = 5V, TA = 25° C, unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
RT9163-33 3.235 3.300 3.365
RT9163-35 3.430 3.500 3.570
Output Vol tage
(Note 2) RT9163-50
VOUT
VIN = 7V 4.900 5. 000 5.1 00
V
RT9163-33
RT9163-35 VIN = 5V to 15V -- 0.1 0.4
Line Regula tion
(Note 2) RT9163-50
ΔVLINE VIN = 7V to 15V -- 0.1 0.4 %
Load Regulation (Note 2) ΔVLOAD I
L = 0 to 500mA -- 0.2 0.4 %
Dropout Voltage (Note 3) VDROP ΔVOUT = 1% -- 1.3 1.4 V
Curren t L i mit ILIM Load = 1Ω 550 -- -- mA
Quiescent Current IQ -- 4.5 8 mA
Temperature C oeffici ent TC -- 0.005 -- %/°C
Temperature Stabi lity TS -- 0.5 -- %
RMS Output Noise (Note 4) -- 0.003 -- %/VOUT
Note 1. θJA is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board of
JEDEC 51-3 thermal measurement standard. The case point of θJC is on the center of the exposed pad.
Note 2. Low duty cycle pulse tested with Kelvin connections.
Note 3. The dropout voltage is defined as VIN -VOUT, which is measured when VOUT is VOUT(NORMAL) − 100mV.
Note 4. Bandwidth of 10 Hz to 10 kHz.
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Outline Dimension
DA
C
b
E
L
e
D1 A1
3-Lead TO-92 Plastic Package
Dimensions In Millimeters Dimensions In Inches
Symbol Min Max Min Max
A 3.175 4.191
0.125 0.165
A1 1.143 1.372 0.045 0.054
b 0.406 0.533
0.016 0.021
C 0.406 0.533
0.016 0.021
D 4.445 5.207 0.175 0.205
D1 3.429 5.029
0.135 0.198
E 4.318 5.334
0.170 0.210
e 1.143 1.397
0.045 0.055
L 12.700 0.500
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DS9163-28 April 2011 www.richtek.com
b
b1
b
H
A
B
D
C
e
e
C1
D1
A
3-Lead SOT-89 Surface Mount Package
Dimensions In Millimeters Dimen sion s In Inches
Symbol Min Max Min Max
A 1.397 1.600 0.055 0.063
b 0.356 0.483 0.014 0.019
B 2.388 2.591 0.094 0.102
b1 0.406 0.533 0.016 0.021
C 3.937 4.242 0.155 0.167
C1 0.787 1.194 0.031 0.047
D 4.394 4.597 0.173 0.181
D1 1.397 1.753 0.055 0.069
e 1.448 1.549 0.057 0.061
H 0.356 0.432 0.014 0.017
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Dimensions In Millimeters Dimensions In Inches
Symbol Min Max Min Max
A 2.184 2.388 0.086 0.094
B 0.889 2.032 0.035 0.080
b 0.508 0.889 0.020 0.035
b1 1.016 Ref. 0.040 Ref.
b2 0.457 0.584 0.018 0.023
C 0.457 0.584 0.018 0.023
D 6.350 6.731 0.250 0.265
D1 5.207 5.461 0.205 0.215
E 5.334 6.223 0.210 0.245
e 2.108 2.438 0.083 0.096
L1 9.398 10.414 0.370 0.410
L2 0.508 Ref. 0.020 Ref.
L3 0.635 1.016 0.025 0.040
U 3.810 Ref. 0.150 Ref.
V 3.048 Ref. 0.120 Ref.
R 0.200 0.850 0.008 0.033
S 2.500 3.400 0.098 0.134
T 0.500 0.850 0.020 0.033
3-Lead TO-252 Surface Mount Package
A
C
b2
b
b1
D
B
E
L3
e
L1
L2
V
U
D1
S
T
R
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DS9163-28 April 2011 www.richtek.com
Information that is provided by Richtek Technology Corporation is believed to be accurate and reliable. Richtek reserves the right to make any change in circuit
design, specification or other related things if necessary without notice at any time. No third party intellectual property infringement of the applications should be
guaranteed by users when integrating Richtek products into any application. No legal responsibility for any said applications is assumed by Richtek.
Richtek Technology Corporation
Headquarter
5F, No. 20, Taiyuen Street, Chupei City
Hsinchu, Taiwan, R.O.C.
Tel: (8863)5526789 Fax: (8863)5526611
Richtek Technology Corporation
Taipei Office (Marketing)
5F, No. 95, Minchiuan Road, Hsintien City
Taipei County, Taiwan, R.O.C.
Tel: (8862)86672399 Fax: (8862)86672377
Email: marketing@richtek.com
Dim ens ions In Millimet ers Dimens ions In I nc he s
Symbol Min Max Min Max
A 1.400 1.800 0.055 0.071
A1 0.020 0.100
0.001 0.004
b 0.600 0.840 0.024 0.033
B 3.300 3.700 0.130 0.146
C 6.700 7.300 0.264 0.287
D 6.300 6.700 0.248 0.264
b1 2.900 3.100 0.114 0.122
e 2.300 0.091
H 0.230 0.350 0.009 0.014
L 1.500 2.000 0.059 0.079
L1 0.800 1.100 0.031 0.043
3-Lead SOT-223 Surface Mount Package
