S-19500A03A-E8T1U4 Datasheet, PDF (5/52 Pages) Seiko Instruments Inc – CMOS VOLTAGE REGULATOR WITH WATCHDOG TIMER AND RESET FUNCTION

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH WATCHDOG TIMER AND RESET FUNCTION
Rev.1.2_01
S-19500/19501 Series
 Pin Configuration
1. HSOP-8A
Top view
1
8
2
7
3
6
4
5
Bottom view
8
1
7
2
6
3
5
4
*1
*1. Connect the heat sink of backside
at shadowed area to the board,
and set electric potential open or
GND.
However, do not use it as the
function of electrode.
Figure 3
Table 4 S-19500 Series (Product with Watchdog Enable Function)
Pin No.
Symbol
Description
1
VOUT
Voltage output pin (Regulator block)
Connection pin for watchdog
2
WADJ
activation threshold current adjustment
resistor
3
VSS
GND pin
4
DLY
Connection pin for delay time
adjustment capacitor
5
WO / RO^*1
WO
RO
Watchdog output pin
Reset output pin
6
WEN
Watchdog enable pin
7
WI
Watchdog input pin
8
VIN
Voltage input pin (Regulator block)
*1. The WO / RO pin combines the watchdog output pin and the reset
output pin.
Table 5 S-19501 Series (Product without Watchdog Enable Function)
Pin No.
Symbol
Description
1
VOUT
Voltage output pin (Regulator block)
Connection pin for watchdog
2
WADJ
activation threshold current adjustment
resistor
3
VSS
GND pin
4
DLY
Connection pin for delay time
adjustment capacitor
5
RO
Reset output pin
6
WO
Watchdog output pin
7
WI
Watchdog input pin
8
VIN
Voltage input pin (Regulator block)
5