S-8533A125FT-TB-X Datasheet, PDF (5/33 Pages) Seiko Instruments Inc – SWITCHING REGULATOR CONTROLLER

STEP-DOWN, SYNCHRONOUS PWM CONTROL SWITCHING REGULATOR CONTROLLER
Rev.3.0_01
S-8533 Series
 Pin Configurations
8-Pin TSSOP
Top view
1
8
2
7
3
6
4
5
Figure 2
Table 1
Pin No. Symbol
Pin Description
1
NC^*1 No connection
2
VOUT Output voltage pin
Shutdown pin
3
ON/ OFF
H : Normal operation (step-down operation)
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.
5