Aimtron Technology AT1457
The AT1457 series Lithium-Ion (Li-Ion) and Lithium-Polymer (Li-Pol) linear charge ICs are designed for cost-sensitive and compact portable electronics. They combine high-accuracy current and voltage regulation, battery conditioning, temperature monitoring, charge termination, and charge-status indication in a single 8-pin IC. The AT1457 continuously measures battery temperature using an external thermistor.| Part No. | AT1457 |
|---|---|
| Datasheet | AT1457 Download |
| Manufacturer |  Aimtron Technology |
| Description | 1-CELL LITHIUM AND LITHIUM POLYMER CHARGE MANAGEMENT IC |
| Buy | Stock & Price |
FEATURES
● Ideal for Single-Cell (4.1 V or 4.2 V) and Li-Ion or Li-Pol Packs● Better Than ±1% Voltage Regulation Accuracy With Preset Voltages
● Optional Cell-Temperature Monitoring Before and During Charge
● Integrated Voltage and Current Regulation With Programmable Charge-Current and High or Low-Side Current Sensing
● Charge Status Output for Single or Dual Led or Host Processor Interface
● Automatic Battery-Recharge Feature
● Charge Termination by Minimum Current
● Automatic Low-Power Sleep Mode When VCC is Removed
●Requires Small Number of External Components
● Packaging: 8-Pin MSOP
GENERAL DESCRIPTION
MSOP package options are offered to fit a wide range of end applications. For safety, the AT1457 inhibits charge until the battery temperature is within user-defined thresholds. The AT1457 then charges the battery in three phases: conditioning, constant current, and constant voltage. If the battery voltage is below the low-voltage threshold, V(min), the AT1457 precharges using a low current to condition the battery.
