Datasheet LTC4012IUF - Linear Technology IC, BATTERY CHARGER, 20QFN — Ficha de datos

Descripción detallada

Manufacturer: Linear Technology

Description: IC, BATTERY CHARGER, 20QFN

Manufacturer Catalogue

Docket:
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LTC4012IUF-1#PBF - Li-Ion, Battery Charger IC
General Description:
The LTC4012 is a constant-current /constant-voltage battery charger controller.

It uses a synchronous quasi-constant frequency PWM control architecture that will not generate audib le noise with ceramic bulk capacitors. Charge current is set by external resistors and can be monitored as an output voltage. With no built-in termination, the LTC4012 family charges a wide range of batteries under external control. The LTC4012 features fully adjustable output voltage, while the LTC4012-1 and LTC4012-2 can be pin-programmed for Lithium-Ion/Polymer battery packs of 1-, 2-, 3- or 4-series cells. The LTC4012-1 provides output voltage of 4.1V/cell and the LTC4012-2 is a 4.2V/cell version. The device includes AC adapter input current limiting, which maximizes charge rate for a fixed input power level. An external sense resistor programs the input current limit, and the ICL status pin indic

Specifications:

• Battery IC Case Style: QFN
• Charge Current Max: 4 A
• Input Voltage: 28 V
• Number of Pins: 20
• Output Voltage Max: 28 V
• SVHC: No SVHC (15-Dec-2010)
• Supply Voltage Range: 6 V to 28 V

RoHS: Yes