S-8520A20MC-AVFT2X Datasheet, PDF (7/44 Pages) Seiko Instruments Inc – SWITCHING REGULATOR CONTROLLER

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Rev.9.0_01
S-8520/8521 Series
 Pin Configuration
SOT-23-5
Top view
5
4
123
Pin No.
1
2
3
4
5
Symbol
______
ON/OFF
VSS
VOUT
EXT
VIN
Table 3
Description
Shutdown pin
“H”: Normal operation
(Step-down operation)
“L”: Stop step-down operation
(All circuits stop)
GND pin
Output voltage monitoring pin
Connection pin for external transistor
IC power supply pin
Figure 3
7