S-882Z Seiko Instruments, S-882Z Datasheet - Page 15

• 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
Characteristics (Typical Data)
1. Discharge Start Voltage (V
2. Discharge Start Voltage (V
3. Discharge Control Switch Resistance (R
4. Discharge Start Delay Time (t
40
35
30
25
20
3.0
2.5
2.0
1.5
1.0
0.5
2.0
1.8
1.6
1.
1.2
1.0
8
6
4
2
0
_00
0
0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65
1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5
0
V
0
CPOU 1(S)
20
0.5
1.8 V
0
V
V
CPOUT
V
1.0
CPOU 1(S)
V
Ta [
IN
IN
20
[V]
[V]
°
V
[V]
V
CPOUT1
CPOUT1
C]
CPOU 1
V
V
CPOUT1(S)
C
CPOU 1(S)
CPOUT1(S)
OUT
1.5
CPOU
0
Ta = 85°C
Ta = 25°C
Ta = −40°C
2.4 V
), Discharge Stop Voltage (V
), Discharge Stop Voltage (V
V
) vs. Input Voltage (V
IN
a 25
V
V
60
a 25
V
CPOUT1
CPOUT2
£
= 1.8 V
10
CPOU 2
= 1.8 V
2.0
0.6 V
Seiko Instruments Inc.
1.8 V
m
°
M1
C
F
80
°
) vs. CPOUT Pin Voltage (V
C
IN
)
1.0
0.8
0.6
0.4
0.2
0
3.0
2.5
2.0
1.5
1.0
0.5
2.5
2.3
2.1
1.9
1.7
1.5
CPOUT2
CPOUT2
0
0.5
0
V
0
CPOU 1(S)
0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1
) vs. Input Voltage (V
) vs. Temperature (Ta)
CPOUT
20
0.5
=
)
V
1.8 V
0
CPOU 1(S)
V
1.0
IN
V
Ta [
IN
[V]
20
[V]
°
=
C]
V
C
V
2.4 V
IN
CPOU 1(S)
CPOU
CPOUT1(S)
1.5
S-882Z Series
)
0
V
IN
a 25
V
V
³
60
V
a 25
V
CPOUT1
CPOUT2
10 F
CPOU 1
0.6 V
CPOU 2
= 2. V
2.0
2.4 V
°
C
80
°
C
15
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