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S8540 Datasheet(PDF) 25 Page - Seiko Instruments Inc

Part # S8540
Description  STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
PDF  36 Pages
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Manufacturer  SII [Seiko Instruments Inc]
Direct Link  http://www.sii.co.jp
Logo SII - Seiko Instruments Inc

S8540 Datasheet(HTML) 25 Page - Seiko Instruments Inc

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STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Rev.4.0_01
S-8540/8541 Series
25
2. 2 Shutdown pin response (VON/OFF : 0
→ 2.5 V IOUT: no Load)
(1) S-8540A33FN (VIN: 4.95V)
(2) S-8540A33FN (VIN: 10V)
4 V
0 V
3 V
0 V
VON/OFF
(1 V/div)
VOUT
(1 V/div)
t (4 ms/div)
4 V
0 V
3 V
0 V
VON/OFF
(1 V/div)
VOUT
(1 V/div)
t (4 ms/div)
(3) S-8540C33FN (VIN: 4.95 V)
(4) S-8540C33FN (VIN: 10 V)
4 V
0 V
3 V
0 V
VON/OFF
(1 V/div)
VOUT
(1 V/div)
t (4 ms/div)
4 V
0 V
3 V
0 V
VON/OFF
(1 V/div)
VOUT
(1 V/div)
t (4 ms/div)
(5) S-8540A18FN (VIN: 4.95 V)
(6) S-8540A18FN (VIN: 10 V)
4 V
0 V
1.5 V
0 V
VON/OFF
(1 V/div)
VOUT
(0.5 V/div)
t (4 ms/div)
4 V
0 V
1.5 V
0 V
VON/OFF
(1 V/div)
VOUT
(0.5 V/div)
t (4 ms/div)



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