s-8521b51mc-aukt2g Seiko Instruments Inc., s-8521b51mc-aukt2g Datasheet - Page 7

• Manufacturer Part Number: s-8521b51mc-aukt2g
• Description: Step-down, Pwm Control Or Pwm / Pfm Switchable Switching Regulator Controller
• Manufacturer: Seiko Instruments Inc.

Rev.8.3
Pin Configuration
STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLOR
5
1
SOT-23-5
Figure 3
Top view
_00
2
4
3
Pin No.
Seiko Instruments Inc.
1
2
3
4
5
Pin name
ON
VOUT
VSS
EXT
VIN
/
OFF
Shutdown pin
GND pin
Output voltage monitoring pin
Connection pin for external transistor
IC power supply pin
Table 3
“H”:
“L”:
Normal operation
(Step-down operation)
Step-down operation stopped
(All circuits deactivated)
S-8520 / 8521 Series
Pin description
7