S-87X_1 Datasheet, PDF (41/53 Pages) Seiko Instruments Inc – HIGH WITHSTAND-VOLTAGE VOLTAGE REGULATOR WITH RESET FUNCTION

HIGH WITHSTAND-VOLTAGE VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.7.2_00
S-87x Series
„ Application Circuits
1. Microcomputer power supply and reset circuit
To construct a microcomputer power supply and a reset circuit using conventional ICs, a voltage regulator
IC, a voltage detector IC, a delay time generation circuit and others are required. The A/B type allows
you to make these circuits without these ICs, and the delay time is variable.
VIN
CD
VOUT
VOR
100 kΩ
V_OUT
CPU
RESET
C_D
V_SS
Figure 36
Caution The above connection diagram and constants do not guarantee correct operation.
Perform sufficient evaluation using the actual application to set the constants.
2. Output current boost circuit
A PNP transistor is used to increase the output current.
1. A/ B type
V_IN
VIN
VOUT
CD
VSS ^VOR
V_OUT
V_OR
V_SS
Figure 37
Seiko Instruments Inc.
41