S-882Z Datasheet, PDF (19/24 Pages) Seiko Instruments Inc – ULTRA-LOW VOLTAGE OPERATION CHARGE PUMP IC FOR STEP-UP DC-DC CONVERTER STARTUP

ULTRA-LOW VOLTAGE OPERATION CHARGE PUMP IC FOR STEP-UP DC-DC CONVERTER STARTUP
Rev.1.2_00
S-882Z Series
„ Application Circuit Example
Figure 20 shows an application circuit example with targeted values of V_IN = 0.3 V, V_OUT = 3.0 V, and I_OUT = 1 mA.
VIN
L
CCPOUT
CPOUT
VIN
S-882Z Series
OUT
VM
CIN
VSS
SD2
SD1
CONT
CVDD
VDD
S-8353D30MC
VOUT
VSS
VOUT
CL
Figure 20
Part Name
S-882Z Series
Symbol
−
Step-up DC-DC converter
−
Inductor
Schottky diode
Startup capacitor
Input capacitor
Output capacitor
Power smoothing capacitor
L
SD1, SD2
C_CPOUT
C_IN
C_L
C_VDD
Table 8
Manufacturer
Seiko Instruments Inc.
Seiko Instruments Inc.
Sumida Corporation
Rohm Co., Ltd.
−
−
−
−
Part No.
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)
Caution The above connection diagram and constant will not guarantee successful operation. Perform
thorough evaluation using the actual application to set the constant.
Seiko Instruments Inc.
19