LTC4006 4A, High Efficiency, Standalone Li-Ion Battery Charger

The LTC®4006 is a complete constant-current/constantvoltage charger controller for 2-, 3- or 4-cell lithium batteries in a small package using few external components. The PWM controller is a synchronous, quasi-constant frequency, constant off-time architecture that will not generate audible noise even when using ceramic capacitors.

The LTC4006 is available in 8.4V, 12.6V and 16.8V versions with ±0.8% voltage accuracy. Charging current is programmable with a single sense resistor to ±4% typical accuracy. Charging current can be monitored as a representative voltage at the IMON pin. A timer, programmed by an external resistor, sets the total charge time or is reset to 25% of total charge time after C/10 charging current is reached. Charging automatically resumes when the cell voltage falls below 3.9V/cell.

Fully discharged cells are automatically trickle charged at 10% of the programmed current until the cell voltage exceeds 2.5V/cell. Charging terminates if the low-battery condition persists for more than 25% of the total charge time.

The LTC4006 includes a thermistor sensor input that suspends charging if an unsafe temperature condition is detected and automatically resumes charging when the battery temperature returns to within safe limits

产品特点 Features

Complete Charger Controller for 2-, 3- or 4-Cell Lithium-Ion Batteries
High Conversion Efficiency: Up to 96%
Output Currents Exceeding 4A
±0.8% Accurate Preset Voltages: 8.4V, 12.6V, 16.8V
Built-In Charge Termination with Automatic Restart
AC Adapter Current Limiting Maximizes Charge Rate*
Automatic Conditioning of Deeply Discharged Batteries
Thermistor Input for Temperature Qualified Charging
Wide Input Voltage Range: 6V to 28V
0.5V Dropout Voltage; Maximum Duty Cycle: 98%
Programmable Charge Current: ±4% Accuracy
Indicator Outputs for Charging, C/10 Current Detection and AC Adapter Present
Charging Current Monitor Output
16-Pin Narrow SSOP Package

应用

Notebook Computers
Portable Instruments
Battery-Backup Systems
Standalone Li-Ion Chargers

典型应用图

参数

LTC4006 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LTC4006EGN-2	SSOP	16	E	$5.09	$3.60
LTC4006EGN-2#PBF	SSOP	16	E	$5.09	$3.60
LTC4006EGN-2#TR	SSOP	16	E		$3.66
LTC4006EGN-2#TRPBF	SSOP	16	E		$3.66
LTC4006EGN-4	SSOP	16	E	$5.09	$3.60
LTC4006EGN-4#PBF	SSOP	16	E	$5.09	$3.60
LTC4006EGN-4#TR	SSOP	16	E		$3.66
LTC4006EGN-4#TRPBF	SSOP	16	E		$3.66
LTC4006EGN-6	SSOP	16	E	$5.09	$3.60
LTC4006EGN-6#PBF	SSOP	16	E	$5.09	$3.60
LTC4006EGN-6#TR	SSOP	16	E		$3.66
LTC4006EGN-6#TRPBF	SSOP	16	E		$3.66

LTC4006 数据手册及相关资料下载

数据手册(英文) : LTC4006 - 4A, High Efficiency, Standalone Li-Ion Battery Charger.PDF
可靠性数据 : R480 Reliability Data .PDF
产品选型卡 : I2C Battery Gas Gauges.PDF