TS2937
Taiwan Semiconductor
500mA Ultra Low Dropout Voltage Regulator
DESCRIPTION FEATURES
TS2937 of fixed-voltage monolithic micro-power voltage Dropout voltage typically 0.6V @ Io=500mA
Output voltage trimmed before assembly
regulators is designed for a wide range of applications.
-18V Reverse peak voltage
This device excellent choice of use in battery-power
+30V Input over voltage protection
application. Furthermore, the quiescent current
+60V Transient peak voltage
increases on slightly at dropout, which prolongs battery
Internal current limit
life. This series of fixed-voltage regulators features very
Thermal shutdown protection
low ground current (200uA Typ.) and very low drop
output voltage (Typ. 60mV at light load and 600mV at
APPLICATION
500mA). This includes a tight initial tolerance of 2%,
Post Regulator for SMPS
extremely good line regulation of 0.05% typ., and very
Industrial Instrumentation
low output temperature coefficient.
2
TO-220 TO-263 (D PAK) TO-252 (DPAK) SOT-223 Pin Definition:
1. Input
2. Ground
3. Output
Notes: Moisture sensitivity level: level 3. Per J-STD-020
TYPICAL APPLICATION CIRCUIT
Document Number: DS_P0000215 1 Version: E15 TS2937
Taiwan Semiconductor
(Note 1)
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL LIMIT UNIT
(Note 2)
-18 ~ +60 V
Input Supply Voltage V
IN
V
Operation Input Supply Voltage V 26
OPR
(Note 3)
Power Dissipation P Internally Limited W
D
o
-40 ~ +125
Operating Junction Temperature Range T C
J
o
T -65 ~ +150 C
Storage Temperature Range STG
THERMAL PERFORMANCE
LIMIT
PARAMETER SYMBOL UNIT
TO-220 TO-263 TO-252 SOT-223
R 60 80 150 170 C/W
Junction to Ambient Thermal Resistance JA
Notes: R is the sum of the junction-to-case and case-to-ambient thermal resistances. The case thermal reference is defined
JA
at the solder mounting surface of the drain pins. R is guaranteed by design while R is determined by the users board
JA CA
design. R shown below for single device operation on FR-4 PCB in still air.
JA
ELECTRICAL SPECIFICATIONS
o
(V =V +1V, I =5mA, C =10uF, T =25 C, unless otherwise noted)
IN OUT L O A
PARAMETER CONDITIONS MIN TYP MAX UNIT
0.980|Vo| 12 / 10 1.020|Vo|
Output Voltage V
5mA I 500mA,
L
0.970|Vo| 5.0 / 3.3 1.030|Vo|
Vo+1V V 26V
IN
Input Supply Voltage -- -- 26 V
o
Output Voltage Temperature Coefficient ppm/ C
-- 50 150
Line Regulation Vo+1V V 26V -- 0.05 0.5 %
IN
Load Regulation 5mA I 500mA %
-- 0.2 1.0
L
I =100mA -- 100 300
L
(Note 4)
Dropout Voltage I =300mA -- 400 500 mV
L
I =500mA -- 600 700
L
I =100A -- 200 -- A
L
(Note 5)
Quiescent Current I =300mA -- 12 --
L
mA
I =500mA -- 25 --
L
(Note 6)
V =0
Short Circuit Current OUT -- -- 1.3 A
C =2.2F -- 500 --
L
Output Noise,
C =3.3F -- 350 -- Vrms
L
10Hz to 100KHz, I =10mA
L
C =33F -- 120 --
L
Document Number: DS_P0000215 2 Version: E15