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UC2909-EP

更新时间： 2024-09-10 12:47:15

品牌	Logo	应用领域
德州仪器 - TI		电池开关
页数	文件大小	规格书
18页	716K
描述
SWITCHMODE LEAD-ACID BATTERY CHARGER

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数据手册

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UC2909-EP 数据手册

UC2909-EP

www.ti.com

SLUSA72 –JULY 2010

SWITCHMODE LEAD-ACID BATTERY CHARGER

Check for Samples: UC2909-EP

FEATURES

SUPPORTS DEFENSE, AEROSPACE,

AND MEDICAL APPLICATIONS

•

Accurate and Efficient Control of Battery

Charging

•

Controlled Baseline

One Assembly/Test Site

One Fabrication Site

Available in Military (–55°C/125°C)

Temperature Range⁽¹⁾

•

Average Current Mode Control from Trickle to

Overcharge

•

Resistor Programmable Charge Currents

Thermistor Interface Tracks Battery

Requirements Over Temperature

•

Extended Product Life Cycle

Extended Product-Change Notification

Product Traceability

Not to Exceed 185.35-KHz Oscillation

Frequency at 125°C

•

Output Status Bits Report on Four Internal

Charge States

Undervoltage Lockout Monitors VCC and

VREF

(1) Additional temperature ranges available - contact factory

DESCRIPTION

The UC2909 controls lead acid battery charging with a highly efficient average current mode control loop. This

chip combines charge state logic with average current 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 –3.9-mV/°C thermistor linearization circuit,

voltage and current error amplifiers, a PWM oscillator, a PWM comparator, a PWM latch, charge state decode

bits, and a 100-mA open collector output driver.

FUNCTION BLOCK DIAGRAM

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

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与UC2909-EP相关器件

型号	品牌	获取价格	描述	数据表
UC2909-EP_16	TI	获取价格	SWITCHMODE LEAD-ACID BATTERY CHARGER
UC2909J	ETC	获取价格	Battery Management
UC2909L	ETC	获取价格	Battery Management
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