STEP-DOWN, SYNCHRONOUS PWM CONTROL SWITCHING REGULATOR CONTROLLER
Rev.2.3
_00
S-8533 Series
Pin Configurations
Table 1
8-Pin TSSOP
Top view
1
2
3
4
8
7
6
5
Figure 2
No connection
Output voltage pin
Shutdown pin
H : Normal operation (step-down operation)
3
ON/
OFF
L : Step-down operation stopped (all circuits
deactivated)
4
CSS
Soft start capacitor connection pin
5
VSS
GND pin
6
NDRV
External N-channel connection pin
7
PDRV
External P-channel connection pin
8
VIN
IC power supply pin
*1.
The NC pin is electrically open. Connection of this pin to VIN or VSS is
allowed.
Pin No.
1
2
Symbol
NC
*1
VOUT
Pin Description
4
Seiko Instruments Inc.