TS2938/A
500mA Ultra Low Dropout Fixed Voltage Regulator with Inhibit
Pin assignment:
1. Input
2. Inhibit
3. Gnd
4. N/C
5. Output
Pin assignment:
1. Output 8. Input
2. Gnd
7. Gnd
3. Gnd
6. Gnd
4. N/C
5. Inhibit
Low Dropout Voltage 0.6V max.
Logic Inhibit Control
General Description
T
he TS2938/A series of fixed-voltage monolithic micro-power voltage regulators is designed for a wide range of
applications. This device excellent choice of use in battery-power application. Furthermore, the quiescent current
increases on slightly at dropout, which prolongs battery life.
This series of fixed-voltage regulators features very low ground current (100uA Typ.), very low drop output voltage (Typ.
60mV at light load and 600mV at 500mA) and output inhibit control. This includes a tight initial tolerance of 1% (TS2938A)
and 2% (TS2938), extremely good line regulation of 0.05% typ., and very low output temperature coefficient.
This series is offered in 5-pin of TO-252-5L and 8-pin SOP-8 package.
Features
Dropout voltage typically 0.5V @Io=500mA
Output current up to 500mA
Logic control electronic shutdown
Output voltage trimmed before assembly
-18V Reverse peak voltage
+30V Input over voltage protection
+60V Transient peak voltage
Low quiescent current 100uA typ. (ON mode),
Internal current limit
Thermal shutdown protection
Block Diagram
Ordering Information
Part No.
TS2938CP5xx
TS2938ACP5xx
TS2938CSxx
-20 ~ +85 C
SOP-8
o
Operation Temp.
(Ambient)
Package
TO-252-5L
TS2938ACSxx
Note: Where
xx
denotes voltage option, available are
8.0V, 5.0V, 3.3V and 2.5V. Contact factory for
additional voltage options.
Absolute Maximum Rating
(Note 1)
Input Supply Voltage (Note 2)
Operation Input Supply Voltage
Power Dissipation (Note 3)
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature (260
o
C)
TO-252 / SOP-8 Package
5
S
Vin
Vin (operate)
P
D
T
J
T
STG
-18 ~ +60
26
Internally Limited
-40 ~ +125
-65 ~ +150
V
V
W
o
o
C
C
TS2938/A
1-5
2004/09 rev. A
1
2
3
4
5
