Renesas Electronics Corporation Li-ion/Li-Polymer Battery Charger Accepting Two Power Sources ISL9214AIRZ

The ISL9214A is a fully integrated low-cost single-cell Li-ion or Li-polymer battery charger. The charger accepts two power inputs, normally one from a USB (Universal Serial Bus) port and the other from a desktop cradle. The ISL9214A is an ideal charger for smart handheld devices that need to communicate with a personal computer via USB.brbr The ISL9214A features 28V maximum voltages for both the cradle and the USB inputs. Due to the 28V rated inputs, low-cost, large output tolerance adapters can be used safely. When both inputs are powered, the cradle input is used to charge the battery. The charge current is programmable for the cradle input with a small resistor. The end-of-charge current is also programmable by another external resistor. The charger incorporates Thermaguard™ which protects the IC against over-temperature. If the die temperature rises above a typical value of +125°C, a thermal foldback function reduces the charge current automatically to prevent further temperature rise. The charger has two indication pins. The span style="text-decoration: overline"PPR/span (power present) pin outputs an open-drain logic LOW when either the cradle or the USB input power is attached. The span style="text-decoration: overline"CHG/span (charge) pin is also an open-drain output that indicates a logic LOW when the charge current is above a minimum current level. When the charge current is below the preset minimum current, the span style="text-decoration: overline"CHG/span pin will indicate a logic HIGH signal. This status is latched and will be reset under one of the following events:brbr 1. The part is disabled and re-enabledbr 2. The selected input source has been removed and reappliedbr 3. The USBON turns LOWbr 4. The BAT pin voltage falls below the recharge threshold (~3.9V)

Charger IC Lithium Ion/Polymer 10-DFN (3x3)

IC BATT CHG LI-ION 1CELL 10DFN

IC, BATTERY CHARGER; Battery Type:Li-Ion, Li-Pol; Input Voltage:28V; Battery Charge Voltage:4.2V; Charge Current:380mA; IC Case / Package:DFN; No. of Pins:10Pins; No. of Cells:1Cells; Operating Temperature Min:-40°C; MSL:- RoHS Compliant: Yes

IC BATT CHG LI-ION 1CELL 10DFN