Datasheet > UC2909L

UC2909L

更新时间： 2024-11-24 23:38:55

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UC2909L 数据手册

UC2909

UC3909

Switchmode Lead-Acid Battery Charger

FEATURES

DESCRIPTION

• Accurate and Efficient Control of

Battery Charging

The UC3909 family of Switchmode Lead-Acid Battery Chargers accurately

controls lead acid battery charging with a highly efficient average current

mode control loop. This chip combines charge state logic with average cur-

rent PWM control circuitry. Charge state logic commands current or voltage

control depending on the charge state. The chip includes undervoltage

lockout circuitry to insure sufficient supply voltage is present before output

switching starts. Additional circuit blocks include a differential current sense

amplifier, a 1.5% voltage reference, a –3.9mV/°C thermistor linearization

circuit, voltage and current error amplifiers, a PWM oscillator, a PWM com-

parator, a PWM latch, charge state decode bits, and a 100mA open collec-

tor output driver.

• Average Current Mode Control from

Trickle to Overcharge

• Resistor Programmable Charge

Currents

• Thermistor Interface Tracks Battery

Requirements Over Temperature

• Output Status Bits Report on Four

Internal Charge States

• Undervoltage Lockout Monitors VCC

and VREF

BLOCK DIAGRAM

UDG-95007-1

Pin numbers refer to J, N, DW packages.

12 3 4 5 6 7...10

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型号	品牌	获取价格	描述	数据表
UC2909MDWREP	TI	获取价格	SWITCHMODE LEAD-ACID BATTERY CHARGER
UC2909N	TI	获取价格	Switchmode Lead-Acid Battery Charger
UC2909NG4	TI	获取价格	Switchmode Lead-Acid Battery Charger
UC2909Q	ETC	获取价格	Battery Management
UC2909QTR	ETC	获取价格	Battery Management
UC2910	TI	获取价格	4-Bit DAC and Voltage Monitor
UC2910D	ETC	获取价格	D/A CONVERTER
UC2910DTR	ETC	获取价格	D/A CONVERTER
UC2910J	ETC	获取价格	D/A CONVERTER
UC2910N	ETC	获取价格	D/A CONVERTER