S-8520A20MC-AVFT2X Datasheet, PDF (30/44 Pages) Seiko Instruments Inc – SWITCHING REGULATOR CONTROLLER

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8520/8521 Series
Rev.9.0_01
2. 2
Shutdown
pin
response
(V ^______
ON/OFF
= 0 V→1.8 V, IOUT = No load)
(1) S-8520/8521C30MC
(V_IN = 3.6 V)
3V
VON / OFF
[1 V/div]
0V
3V
VON / OFF
[1 V/div]
0V
3V
V_OUT
[1 V/div]
0V
t [2 ms/div]
3V
V_OUT
[1 V/div]
0V
(2) S-8520/8521A30MC
3V
VON / OFF
[1 V/div]
0V
(V_IN = 3.6 V)
3V
VON / OFF
[1 V/div]
0V
3V
V_OUT
[1 V/div]
0V
t [1 ms/div]
(3) S-8520/8521E33MC
3V
VON / OFF
[1 V/div]
0V
3V
V_OUT
[1 V/div]
0V
(V_IN = 4.0 V)
3V
VON / OFF
[1 V/div]
0V
3V
V_OUT
[1 V/div]
0V
t [1 ms/div]
3V
V_OUT
[1 V/div]
0V
(V_IN = 9.0 V)
t [2 ms/div]
(V_IN = 9.0 V)
t [1 ms/div]
(V_IN = 9.0 V)
t [1 ms/div]
30