Overview: CN3162 is an integrated circuit that can manage the charging of a single-cell rechargeable lithium battery. The device includes internal power transistors, eliminating the need for external current sensing resistors and current limiting diodes. CN3162 requires very few external components, making it ideal for portable applications. The thermal modulation circuit can control the chip temperature within a safe range when the device power consumption is high or the ambient temperature is high. The internal fixed constant voltage charging voltage is 4.2V, which can also be adjusted by an external resistor. The charging current is set by an external resistor. When the input power is cut off, CN3162 automatically enters a low-power sleep mode, with a battery current consumption of less than 3 microamps. Other functions include input undervoltage latch, automatic recharging, battery temperature monitoring, and charging status/charging completion status indication. CN3162 is available in a heat-enhanced 8-pin small outline package (eSOP8).

Product Parameters

Main Functions: Integrated circuit for charging management of single-cell rechargeable lithium batteries

Operating Mode: Linear

Battery Type: Lithium-ion battery

Number of Batteries: 1

Input Voltage: 3.8V-6V

Output Voltage Range: 0V-4.2V

Maximum Charging Current: 1A

Maximum Output Current: 1A

Operating Current: 450uA

Solar Power Supply: No

Thermal Modulation: Yes

Packaging Form: eSOP8

Chip Enable: No

Built-in Power Tube: Yes

Applications:

l Mobile phones

l Mobile power supplies

l Digital cameras

l Portable devices

l Various chargers

Features:

l Independent single-cell lithium battery charging management integrated circuit

l Input voltage range: 3.8V to 6V

l On-chip power transistor

l No external current limiting diodes and current detection resistors required

l Constant voltage charging voltage 4.2V, can also be adjusted upward via an external resistor

l Pre-charge mode with low current when battery voltage is low to activate deeply discharged batteries and reduce power consumption

l Settable constant current charging current up to 1A

l Constant current/constant voltage/constant temperature charging mode, maximizing charging current while preventing chip overheating

l Automatically enters low-power sleep mode when power supply voltage drops

l Charging status and charging completion status indication output

l C/10 charging completion detection

l Automatic recharging

l Battery temperature monitoring function

l eSOP8 package

l Lead-free product, RoHS compliant, halogen-free