Product Introduction

Product parameters

Funtion：1A Nickel-Metal Hydride Battery Charger IC

Opration Mode：Linear

Battery：Nickel Metal Hydride Battery

Battery No.：1-3

Vout Range：0V-5V

Vin Range：3.8V - 6V

Max Charge Current：600mA

Operating Current：450uA

Solar Panel charge：No

Chip Temperature Regulation：Yes

Package：eSOP8

Chip Enable：No

On-chip Power MOSFET：Yes

General Description:

CN3085 is a charger IC for single to four cell Nickel Metal Hydride (NiMH) batteries. The device contains an on-chip power MOSFET and eliminates the need for the external sense resistor and blocking diode. CN3085 requires few external components, and is suitable for portable applications. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature. The CN3085 integrates a high precision reference voltage and amplifier, which can precisely regulate the charge voltage and charge current. The charge current can be set externally with a single resistor. When the input supply is removed, the CN3085 automatically enters a low power sleep mode , dropping the battery drain current to less than 3uA. Other features include undervoltage lockout, automatic recharge, the constant current charging, the maintenance charge mode(timer termination)，charge/termination indicators and battery temperature monitoring.

The CN3085 is available in thermally-enhanced 8-pin SOP8 package. (eSOP8)。

Applications:

l Digital Camera

l Electronic Dictionary

l Portable Devices

l Nickel Metal Hydride Battery Charger

Features:

l On-chip Power MOSFET

l Voltage accuracy：1%

l Precharge Conditioning for reviving deeply discharged cells and minimizing heat dissipation during initial stage of charge

l Charge Current up to 1A

l Constant-Current/Constant-Temperature operation with thermal regulation to maximize charge rate without risk of overheating