S-816 Datasheet, PDF (2/24 Pages) Seiko Instruments Inc – EXTERNAL TRANSISTOR TYPE CMOS VOLTAGE REGULATOR

EXTERNAL TRANSISTOR TYPE CMOS VOLTAGE REGULATOR
S-816 Series
„ Block Diagram
Rev.5.1_00
+
−
ON/OFF
VIN
EXT
V_REF
Current Source
Pull-Up
Overcurrent
Protection
Circuit
+
Error
−^Amplifier
Sink
Driver
VOUT
+
−
VSS
Remark 1. To ensure you power cutoff of the external transistor when the device is powered down, the
EXT output is pulled up to V_IN by a pull-up resistance (approx. 0.5 MΩ) inside the IC.
2. The diode inside the IC is a parasitic diode.
Figure 1
2
Seiko Instruments Inc.