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S-8821 Datasheet(PDF) 2 Page - Seiko Instruments Inc

Part # S-8821
Description  VOLTAGE REGULATION STEP-UP CHARGE PUMP DC-DC CONVERTER
PDF  19 Pages
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Manufacturer  SII [Seiko Instruments Inc]
Direct Link  http://www.sii.co.jp
Logo SII - Seiko Instruments Inc

S-8821 Datasheet(HTML) 2 Page - Seiko Instruments Inc

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VOLTAGE REGULATION STEP-UP CHARGE PUMP DC-DC CONVERTER
S-8821 Series
Rev.3.1_00
Seiko Instruments Inc.
2
Block Diagram
VIN
Switch
control
circuit
SW1
SW2
SW3
SW4
C
+
C
CPUMP=0.10 μF
Soft start
circuit
ON/OFF
circuit
ON/OFF
PFM control
oscillator
circuit
(1.0 MHz)
Reference
voltage
+
-
VOUT
GND
COUT=10 μF
Rs
Rf
CIN=4.7 μF
Figure 1



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