S-882Z Seiko Instruments, S-882Z Datasheet - Page 19

• Manufacturer Part Number: S-882Z
• Description: ULTRA-LOW VOLTAGE OPERATION CHARGE PUMP IC
• Manufacturer: Seiko Instruments

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Rev.1.2
ULTRA-LOW VOLTAGE OPERATION CHARGE PUMP IC FOR STEP-UP DC-DC CONVERTER STARTUP
Application Circuit Example
Caution The above connection diagram and constant will not guarantee successful operation. Perform
Figure 20 shows an application circuit example with targeted values of V
S-882Z Series
Step-up DC-DC converter
Inductor
Schottky diode
Startup capacitor
Input capacitor
Output capacitor
Power smoothing capacitor
_00
V
C
IN
IN
Part Name
thorough evaluation using the actual application to set the constant.
VIN
CPOUT
S-882Z Series
VSS
SD1, SD2
Symbol
C
C
CPOUT
C
C
VDD
−
−
L
IN
L
C
CPOUT
OUT
VM
L
Seiko Instruments Inc.
Seiko Instruments Inc.
Seiko Instruments Inc.
Sumida Corporation
Rohm Co., Ltd.
Figure 20
Manufacturer
Table 8
CONT
−
−
−
−
S-8353D30MC
C
VSS
VDD
IN
= 0.3 V, V
SD2
S-882Z20-M5T1G
(Discharge start voltage value
setting : 2.0 V)
S-8353D30MC
(Output voltage setting : 3.0 V)
CDRH5D18-101 (100 µH)
RB551V-30
10 µF (ceramic type)
47 µF
33 µF (ESR > 50 mΩ)
1 µF (ceramic type)
VDD
OUT
SD1
VOUT
= 3.0 V, and I
Part No.
S-882Z Series
OUT
C
V
L
OUT
= 1 mA.
19
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