S-882Z Seiko Instruments, S-882Z Datasheet - Page 5

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

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*1. V
*2. Voltage at which discharge to the OUT pin stops
*3. Input voltage required to start discharge to the OUT pin from the startup capacitor
*4. Delay time from when power is input to the VIN pin until the electric charge of the startup capacitor is discharged to the
*5. V
*6. Current that flows into the IC from the OUT pin due to the off-leak current of the discharge control switch
Caution The voltage that is input to the connected step-up DC-DC converter varies according to the consumption
Discharge start
voltage
Discharge stop
voltage
Operating input
voltage
Oscillation start
voltage
Discharge
control switch
resistance
Discharge start
delay time
Discharge start
voltage
temperature
coefficient
Current
consumption
during operation
Current
consumption
during shutdown
Shutdown
voltage
Shutdown
voltage
temperature
coefficient
Discharge
control switch
leak current
VM pin input
current
Oscillation
frequency
Rev.1.2
ULTRA-LOW VOLTAGE OPERATION CHARGE PUMP IC FOR STEP-UP DC-DC CONVERTER STARTUP
Electrical Characteristics
Parameter
OUT pin
V
V
CPOUT1
OFF
OFF(S)
OFF(S)
*1
*2
*3
*5
:
current of the step-up DC-DC converter and the power smoothing capacitor. Set the discharge start
voltage based on thorough evaluation including the temperature characteristics under the actual usage
conditions.
*4
_00
: Shutdown voltage setting value (VM pin voltage setting value at which shutdown occurs)
is automatically set to V
*6
: Actual discharge start voltage value, V
Actual shutdown voltage value (VM pin voltage value at which shutdown actually occurs)
∆
∆
Ta
∆
V
V
Ta
Symbol
∆
V
CPOUT1
CPOUT2
V
I
•
R
t
f
V
I
V
LEAK
V
CPOUT1
I
OUT
I
OSC
SSS
•
VM
V
SS
OFF
ST
M1
OFF
IN
CPOUT1
V
OFF
V
V
V
V
V
V
Ta = − 40 to + 85 ° C
V
Ta = − 30 to + 60 ° C
Not externally connected, voltage
applied to V
V
I
V
Ta = − 40 to + 85 ° C
V
V
V
V
V
V
V
V
Ta = − 40 to + 85 ° C
V
V
V
V
OUT
IN
CPOUT1(S)
CPOUT1(S)
CPOUT1(S)
CPOUT1(S)
CPOUT1(S)
CPOUT1(S)
CPOUT
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
OUT
VM
IN
CPOUT1(S)
= 0.35 V
= 0.35 V, C
= 0.3 V, V
= 0.6 V, V
= 1.0 V, V
= 0.3 V, V
= 0.6 V, V
= 1.0 V, V
= 2.0 V, V
= 0.3 V, V
= V
= 0.3 V
= 3.0 V
= 3 mA
= V
CPOUT
= 1.8 to 2.4 V,
VM
= 1.8, 2.0 V,
= 1.8 V
= 2.0 V
= 2.2 V
= 2.4 V
= 1.8 to 2.4 V,
= 3.0 V
IN
+ 0.1 V.
= 0 V,
CPOUT
CPOUT
CPOUT
CPOUT
CPOUT
CPOUT
CPOUT
CPOUT
Conditions
CPOUT
Seiko Instruments Inc.
= 0 V
= 0 V
= 0 V
= 0 V, V
= 0 V, V
= 0 V, V
= 0 V, V
= 0 V
CPOUT1(S)
= 10 µ F
Table 4
VM
VM
VM
VM
: Discharge start voltage setting value
= 3.0 V
= 3.0 V
= 3.0 V
= 3.0 V
V
V
V
V
V
V
CPOUT1(S)
− 0.60
− 0.67
− 0.74
− 0.80
CPOUT1
CPOUT1
CPOUT1
CPOUT1
0.35
0.30
Min.
− 0.1
− 0.1
OFF(S)
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
V
V
CPOUT1(S)
± 150
± 150
Typ.
OFF(S)
350
(Ta = 25 ° C unless otherwise specified)
0.1
0.5
1.2
1.0
34
−
−
−
−
−
−
−
7
−
−
−
−
−
V
V
V
V
V
V
CPOUT1(S)
− 0.33
− 0.33
− 0.33
− 0.33
± 550
± 550
Max.
CPOUT1
CPOUT1
CPOUT1
CPOUT1
+ 0.1
+ 0.1
100
OFF(S)
3.0
3.0
0.3
0.5
1.5
3.0
0.6
0.7
0.7
0.8
0.1
1.9
25
−
S-882Z Series
ppm/ ° C
ppm/ ° C
Unit
kHz
mA
mA
mA
µ A
µ A
µ A
µ A
µ A
µ A
Ω
V
V
V
V
V
V
V
V
V
s
Measurement
Circuit
1
1
1
1
1
2
2
−
3
2
−
4
4
4
5
5
5
5
6
−
7
8
−
5
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