S-882Z22-M5T1G Seiko Instruments, S-882Z22-M5T1G Datasheet - Page 11

• Manufacturer Part Number: S-882Z22-M5T1G
• Description: IC CHARGE PUMP CONV 2.2V SOT23-5
• Manufacturer: Seiko Instruments
• Type: Step-Up (Boost), Switched Capacitor (Charge Pump)r

Specifications of S-882Z22-M5T1G

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 2.2V
• Current - Output: 3mA
• Frequency - Switching: 350kHz
• Voltage - Input: 0.3 ~ 3 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5, SC-74A, SOT-25
• Power - Output: 300mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Rev.2.0
ULTRA-LOW VOLTAGE OPERATION CHARGE PUMP IC FOR STEP-UP DC-DC CONVERTER STARTUP
Standard Circuit
Caution
Caution The above connection diagram and constant will not guarantee
Cautions 1.
If the Schottky diode (SD1) has a large reverse current or if a pull-down resistor is added to the OUT pin of the
S-882Z Series, add the current value generated from these to the current consumption (I
DC-DC converter.
Moreover, if a Schottky diode is added between the OUT pin of the S-882Z Series and the power supply pin (VDD
pin) of the step-up DC-DC converter, set V
drop voltage (V
obtained with the above described conditional expression.
_00
Discharge Start Voltage
The above connection diagram and constant will not guarantee successful operation. Perform
thorough evaluation using the actual application to set the constant.
1.8 to 2.4 V
1.8, 2.0 V
successful operation. Perform thorough evaluation using the actual
application to set the constant.
2. In the S-882Z Series, C
Value
The S-882Z Series can start up the step-up DC-DC converter more reliably as the discharge
start voltage value (V
note that the time from when the input power is input until the step-up DC-DC converter
starts becomes longer in this case.
≥ 2.2 V, the minimum value of the operation input voltage (the minimum input voltage value
required for power to be output from the OUT pin of the S-882Z Series) rises from 0.3 V to
0.35 V (refer to Table 6).
F
) of the added Schottky diode in comparison to the discharge start voltage value (V
Minimum Operation Input
VIN
Voltage Value
CPOUT1
Table 6
CPOUT
0.35 V
Seiko Instruments Inc.
0.3 V
CPOUT1
) and the startup capacitor value (C
can be more lowered as V
S-882Z Series
Figure 15
CPOUT
so that it is higher by the amount corresponding to the forward
VSS
C
Temperature Range
CPOUT
−30 to +60°C
−40 to +85°C
OUT
VM
CPOUT1
is higher, but note that if V
CPOUT
) are larger. However,
S-882Z Series
VDD
) of the step-up
CPOUT1
CPOUT1
11
)