S-1702 Datasheet, PDF (2/45 Pages) Seiko Instruments Inc – Built-in overcurrent protection circuit

SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION
S-1702 Series
Rev.2.2_01
 Block Diagrams
1. S-1702 Series A type to H type
ON / OFF
Overcurrent
protection circuit
ON/OFF circuit
Reference
voltage circuit
RESX
VIN
Logic
Reset circuit circuit
Reference
voltage
circuit
Voltage
detector
Delay
circuit
Output
circuit
VOUT
VSS
Product
Type
Detector
Monitor
Voltage
A
VOUT
B
VOUT
C
VOUT
D
VOUT
E VIN
F VIN
G VIN
H VIN
Discharge Shunt Function
by ON / OFF and RESX
Pins
Control by Control by
ON / OFF Pin RESX Pin



×
×

×
×



×
×

×
×
VDOUT
Figure 1
2. S-1702 Series J type and K type (external input detection type)
ON / OFF
Overcurrent
protection circuit
ON/OFF circuit
Reference
voltage circuit
VOUT
Product
Type
Detector
Monitor
Voltage
J
External
input
K
External
input
Discharge Shunt Function
by ON / OFF Pin

×
SENSE
VIN
Logic
Reset circuit circuit
VSS
Reference
voltage
circuit
Voltage
detector
Delay
circuit
Output
circuit
VDOUT
Figure 2
2