中文
EnglishThe APL3200 ,APL3201 .APL3202, APL3207 charges a single-cell Li+ battery from both USB and AC adapter sources. It also includes battery- to-input power switchover, therefore, the system can be powe
Features
Charge from USB or AC Adapter
Accurate BATT Regulation Voltage
Programmable DC Charging Current
Selectable USB Charging Current (Either 100mA
or 500mA)
Thermal Regulation for Simplified Board Design
Input Protection Up to 18V
Soft-Start
External Thermistor Monitoring
Charge Shutdown Control
Charge Status Outputs
DC and USB Power-OK Indicators
Small, High Power QFN5x5-16 and TQFN4x4-16
Packages
Lead Free and Green Devices Available
(RoHS Compliant)
General Description
The APL3200 ,APL3201 .APL3202, APL3207 charges a single-cell Li+ battery from both
USB and AC adapter sources. It also includes battery-
to-input power switchover, therefore, the system can be
powered directly from the power source rather than from
the battery.
In its simplest application, the APL3200 doesn’t need
external MOSFET or diodes and accepts input voltages
up to 6.5V; however, DC input over-voltage protection up
to 18V can be added with a single SOT PFET.
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 APL3200 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 STAT 1 and STAT 2 outputs
indicating various charge status. DC power-OK (DCOK),
Pin Configuration
USB power-OK (UOK), and poweron (PON) outputs
indicate when valid power is present. These outputs drive
logic or power-selection MOSFETs to disconnect the
charging sources from the load and to protect the APL3200
from overvoltage. The APL3200 doesn’t contain logic for
Part_No | Package & Pins | Input Voltage (V) | Quiescent Current (typ)(uA) | Charge Current (max)(A) | Battery Charge Voltage | VIN OVP | USB Input | Battery-Load Switch | Charge State Output | |
min | max | |||||||||
APL3200 | 4.35 | 6 | 2000 | 1000 | 4.2 | Y | Y | Y | Y | |
APL3201 | DFN3x3-10 | 4.35 | 6 | 2000 | 1000 | 4.2 | N | N | N | Y |
APL3202 | SOT-23-5 | 4.35 | 6 | 300 | 500 | 4.2 | N | N | N | Y |
APL3207 | DFN3x3-10 | 4.35 | 6.5 | 300 | 500 | 4.2 | N | N | N | Y |
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