s-8460 Seiko Instruments Inc., s-8460 Datasheet - Page 18

• Manufacturer Part Number: s-8460
• Description: Step-up Or Down, Single-coil, Pwm Control Switching Regulator Controller
• Manufacturer: Seiko Instruments Inc.

18
STEP-UP OR DOWN, SINGLE-COIL, PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8460
2. Examples of Transient Response Characteristics
(1) Power-on (V
(2) ON/OFF Pin Response (V
(1 V/div)
(1 V/div)
(1 V/div)
(4 V/div)
(1 V/div)
(1 V/div)
V
(1 V/div)
V
V
V
V
V
V
(1 V /div)
V
OUT
OUT
ON/OFF
O UT
IN
OUT
IN
ON/OFF
20 V
0 V
4 V
3 V
0 V
3 V
0 V
0 V
IN
: 0 V → 2.64 V or 4.95 V or 18.0 V, I
t (2 ms/div)
t (2 ms/div)
t (2 ms/div)
t (2 ms /div)
V
V
IN
IN
ON/OFF
: 0 V → 2.64 V
: 0 V → 18.0 V
V
V
: 0 V → 2.2 V, I
IN
IN
: 2.64 V
: 18.0 V
Seiko Instruments Inc.
3 V
0 V
3 V
0 V
0 V
0 V
3 V
3 V
OUT
OUT
: no load, V
: no load, V
(1 V/div)
V
(1 V/div)
(1 V/div)
V
(1 V/div)
OUT
V
ON/OFF
V
OUT
IN
OUT
3 V
0 V
5 V
0 V
OUT
: 3.3 V, C
: 3.3 V, C
SS
: 4700 pF)
SS
t (2 ms/div)
t (2 ms/div)
: 4700 pF)
V
IN
: 0 V → 4.95 V
V
IN
: 4.95 V
Rev.2.1
3 V
0 V
3 V
0 V
_00