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APL3201
Active
Li+ Battery Charger with Thermal Regulation
Features
General Description
The APL3201 is a constant-current/constant-voltage linear charger for single cell Li+ batteries. The APL3201 needs no external MOSFET or diodes, and accepts input voltage up to 6.0V. The small packages and low external component count make the APL3201 ideally suited for portable applications. On-chip thermal limiting simplifies PC board layout and allows optimum charging rate without the thermal limits imposed by worst-case battery and input voltage. When the APL3201 thermal limit is reached, the charger does not shut down but simply reduces charging current. Ambient or battery temperature can be monitored with an external thermistor. When the temperature is out of range, charging pauses. Other features include the STAT1 and 2 outputs to indicate four charge states, and the EN input, switches the APL3201 on or off. The APL3201 is available in 3mmx3mm DFN-10 package, and operates over the -40°C to +85°C temperature range.
Features
- Programmable Charge Current Up to 1A
- Charge Status Output Pins
- Soft-Start Limits Inrush Current
- 4.2V Charge Voltage with ±1% Accuracy
- Fixed 55mA Prequal Charge Current
- Thermal Limiting Simplifies Board Design
- External Thermistor Monitor
- Enable/Disable Control
- 3mm x 3mm DFN-10 Package (DFN3x3-10)
- Disable Charging When VIN > 6.4V
- Lead Free and Green Devices Available (RoHS Compliant)
General Description
The APL3201 is a constant-current/constant-voltage linear charger for single cell Li+ batteries. The APL3201 needs no external MOSFET or diodes, and accepts input voltage up to 6.0V. The small packages and low external component count make the APL3201 ideally suited for portable applications. On-chip thermal limiting simplifies PC board layout and allows optimum charging rate without the thermal limits imposed by worst-case battery and input voltage. When the APL3201 thermal limit is reached, the charger does not shut down but simply reduces charging current. Ambient or battery temperature can be monitored with an external thermistor. When the temperature is out of range, charging pauses. Other features include the STAT1 and 2 outputs to indicate four charge states, and the EN input, switches the APL3201 on or off. The APL3201 is available in 3mmx3mm DFN-10 package, and operates over the -40°C to +85°C temperature range.
APL3202
Active
Li+ Battery Charger with Thermal Regulation
Features
General Description
The APL3202 is a constant-current/constant-voltage linear charger for single cell Li+ batteries. The APL3202 needs no external MOSFETs or diodes, and accepts input voltages up to 6.5V. The small package and low external component counts make the APL3202 an idea part for portable applications. On-chip thermal regulation protects the APL3202 from excessive temperature and optimizes the board design for compact size and typical thermal conditions. When the junction temperature reaches the thermal regulation threshold, the charger does not shut down but simply reduces the charge current. Charge current can be programmed by connecting an external resistor from ISET pin to GND. Using an external MOSFET to disconnect the resistor from ground shuts down the charger, and reduces the input supply current down to 25µA. The APL3202 also has the STAT pin to indicate charge status. The APL3202 is available in a SOT-23-5 package, and operates over the -40°C to +85°C temperature range.
Features
- Programmable Charge Current Up to 500mA
- Charge Status Output Pin
- Soft-Start Limits Inrush Current
- 4.2V Charge Termination Voltage with ±1% Accuracy
- 45mA Pre-charge Current (RSET=2K)
- Thermal Regulation Simplifies Board Design
- Enable/Disable Control
- Available in a SOT-23-5 Package
- Lead Free and Green Devices Available (RoHS Compliant)
General Description
The APL3202 is a constant-current/constant-voltage linear charger for single cell Li+ batteries. The APL3202 needs no external MOSFETs or diodes, and accepts input voltages up to 6.5V. The small package and low external component counts make the APL3202 an idea part for portable applications. On-chip thermal regulation protects the APL3202 from excessive temperature and optimizes the board design for compact size and typical thermal conditions. When the junction temperature reaches the thermal regulation threshold, the charger does not shut down but simply reduces the charge current. Charge current can be programmed by connecting an external resistor from ISET pin to GND. Using an external MOSFET to disconnect the resistor from ground shuts down the charger, and reduces the input supply current down to 25µA. The APL3202 also has the STAT pin to indicate charge status. The APL3202 is available in a SOT-23-5 package, and operates over the -40°C to +85°C temperature range.
