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PDF RT9172 Data sheet ( Hoja de datos )
| Número de pieza | RT9172 | |
| Descripción | 3A Fixed Output Voltage LDO Regulator | |
| Fabricantes | Richiek | |
| Logotipo |  |
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®
RT9172
3A Fixed Output Voltage LDO Regulator
General Description
Features
The RT9172 series of low dropout linear regulators operate
from a 2.25V to 6V input supply. A wide range of preset
output voltage options is available. These low dropout
linear regulators respond very fast to step changes in load,
which are suitable for low voltage microprocessor
applications. The RT9172 uses an internal P-MOSFET as
the pass device, which does not cause extra GND current
in heavy load and dropout condition. The shutdown mode
of low operation current makes the IC suitable for power-
saving systems. The other features include current limiting
and over temperature protection.
Low Dropout Voltage
Low Ground Pin Current
Load Regulation of 0.4% at 3A
0.5mA Quiescent Current in Shutdown Mode
Guaranteed Output Current of 3A DC
Available in TO-263 and TO-220 Packages
Output Voltage Accuracy ±1.5%
Error Flag Indicates Output Status
Sense Option Improves Better Load Regulation
Extremely Low Output Capacitor Requirements
Over Temperature/Over- Current Protection
RoHS Compliant and 100% Lead (Pb)-Free
Ordering Information
RT9172 -
Applications
Package Type
T5 : TO-220-5
M5 : TO-263-5
Microprocessor Power Supplies
GTL, GTL+, BTL, and SSTL Bus Terminators
Power Supplies for DSPs
T : TO-220
SCSI Terminator
M : TO-263
G : SOT-223
S : SOP-8
Lead Plating System
P : Pb Free
Post Regulators
High Efficiency Linear Regulators
Battery Chargers
Other Battery Powered Applications
G : Green (Halogen Free and Pb Free)
Output Voltage
1.5V to 3.3V
Pin Configurations
(TOP VIEW)
(with 0.1V per step)
S : Pin Out Exchange
N : Pin 5 bond SENSE
F : Pin 5 bond FLG
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.
TO-220
1 23
VIN GND VOUT
(TAB)
TO-263
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
123
VIN GND VOUT
(TAB)
SOT-223
VOUT
SENSE
GND
NC
8
27
36
45
SOP-8
VIN
GND
GND
EN
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS9172-18 August 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
1 page  
RT9172
Absolute Maximum Ratings
Input Voltage ------------------------------------------------------------------------------------------------------------ 6V
Power Dissipation, PD @ TA = 25°C
SOT-223 ----------------------------------------------------------------------------------------------------------------- 0.741W
SOP-8 -------------------------------------------------------------------------------------------------------------------- 0.625W
TO-263 ------------------------------------------------------------------------------------------------------------------- 2.222W
TO-220 ------------------------------------------------------------------------------------------------------------------- 1.820W
Package Thermal Resistance (Note 1)
SOT-223, θJC ----------------------------------------------------------------------------------------------------------- 23°C/W
SOT-223, θJA ------------------------------------------------------------------------------------------------------------ 135°C/W
SOP-8, θJC -------------------------------------------------------------------------------------------------------------- 45°C/W
SOP-8, θJA -------------------------------------------------------------------------------------------------------------- 160°C/W
TO-263, θJC ------------------------------------------------------------------------------------------------------------- 7.8°C/W
TO-263, θJA ------------------------------------------------------------------------------------------------------------- 45°C/W
TO-220, θJC ------------------------------------------------------------------------------------------------------------- 15°C/W
TO-220, θJA ------------------------------------------------------------------------------------------------------------- 55°C/W
ESD Rating ------------------------------------------------------------------------------------------------------------- 3 kV
Storage Temperature Range ---------------------------------------------------------------------------------------- −65°C to 150°C
Lead Temperature (Soldering, 10 sec.) --------------------------------------------------------------------------- 260°C
Junction Temperature Range ---------------------------------------------------------------------------------------- −40°C to 125°C
Electrical Characteristics
(Limits in standard typeface are for TA = 25° C, unless otherwise specified: VIN = VO(NOM) + 1.0V, IL = 10mA,
COUT = 10uF(Electrolytic), VEN = VIN)
Parameter
Output Voltage Tolerance
Input Voltage Range
Line Regulation
Load Regulation
Dropout Voltage
Quiescent Current
Shutdown Supply Current
Peak Output Current
Short Circuit Protection
Current Limit
Over Temperature Protection
Shutdown Threshold
Thermal Shutdown Hysteresis
Symbol
Test Conditions
VIN
ΔVLINE
ΔVLOAD
VDROP
IQ
IGSD
IO(PEAK)
VOUT + 0.4V < VIN < 5.5V
Note 2
Note 3
Note 4
IL = 3A
VEN = 0V
Min Typ Max
−1.5 0 1.5
2.25 -- 5.5
-- 0.35 1
-- 0.4 1
-- 0.1 0.4
-- 0.1 0.4
-- 400 700
-- 1.2 3
-- 0.5 5
3.5 5 --
ILIMIT
3.5 5 --
TSD Guaranteed by design
Guaranteed by design
-- 170 --
-- 10 --
Unit
%
V
%
%
mV
mA
μA
A
A
°C
°C
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS9172-18 August 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
5
5 Page 
Outline Dimension
F
E1
C
D
M
L1 E
RT9172
b1 A1
L2
eb
b2
A
Symbol
A
A1
b
b1
b2
C
D
E
e
E1
F
L1
L2
M
Dimensions In Millimeters
Dimensions In Inches
Min Max Min Max
4.064
4.826
0.160
0.190
2.032
2.921
0.080
0.115
0.635
1.016
0.025
0.040
1.143
1.524
0.045
0.060
0.305
0.559
0.012
0.022
1.143
1.397
0.045
0.055
9.779
10.668
0.385
0.420
7.620
9.398
0.300
0.370
2.286
2.794
0.090
0.110
11.176
12.954
0.440
0.510
2.616
2.870
0.103
0.113
17.526
18.542
0.690
0.730
7.544
8.636
0.297
0.340
3.708
3.962
0.146
0.156
3-Lead TO- 220 Plastic Package
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS9172-18 August 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet RT9172.PDF ] | |
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