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S-8351A20MC-J2FT2X Datasheet(PDF) 12 Page - Seiko Instruments Inc

No. de pieza S-8351A20MC-J2FT2X
Descripción Electrónicos  SWITCHING REGULATOR CONTROLLER
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Fabricante Electrónico  SII [Seiko Instruments Inc]
Página de inicio  http://www.sii.co.jp
Logo SII - Seiko Instruments Inc

S-8351A20MC-J2FT2X Datasheet(HTML) 12 Page - Seiko Instruments Inc

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STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER
S-8351/8352 Series
Rev.3.0_01
12
Table 15 (2 / 2)
(Ta = 25
°C unless otherwise specified)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Measurement
circuit
OFF
/
ON
pin input voltage
(With shutdown function)
VSH
VOUT = VOUT(S)
× 0.95,
Measured oscillation at CONT pin
0.75
V
2
VSL1
VOUT = VOUT(S)
× 0.95,
Judged oscillation stop at
CONT pin
At VOUT
≥1.5 V
0.3
V
2
VSL2
At VOUT
<1.5 V
0.2
V
2
OFF
/
ON
pin input current
(With shutdown function)
ISH
OFF
/
ON
V
= 10 V
− 0.1
0.1
μA
2
ISL
OFF
/
ON
V
= 0 V
− 0.1
0.1
μA
2
Efficiency
EFFI
S-8351x30
86
%
1
S-8351x50
88
%
1
External parts
Coil:
CDRH6D28-101 (100
μH) of Sumida Corporation
Diode:
MA2Z748 (Shottky type) of Matsushita Electric Industrial Co., Ltd.
Capacitor: F93 (16 V, 47
μF tantalum type) of Nichicon Corporation
VIN = VOUT(S)
× 0.6 applied, IOUT = VOUT(S) / 250 Ω
With shutdown function :
OFF
/
ON
pin is connected to VOUT
For VDD / VOUT separate type : VDD pin is connected to VOUT pin
Remark 1.
VOUT(S) specified above is the set output voltage value, and VOUT is the typical value of the actual output
voltage.
2.
VDD / VOUT separate type
A step-up operation is performed from VDD = 0.8 V. However, 1.8 V
≤VDD<10 V is recommended stabilizing
the output voltage and oscillation frequency. (VDD
≥1.8 V must be applied for products with a set value of less
than 1.9 V.)


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