Datasheet > UBA2071AT/N1

UBA2071AT/N1

更新时间： 2024-11-12 09:23:39

品牌	Logo	应用领域
恩智浦 - NXP		驱动光电二极管
页数	文件大小	规格书
35页	574K
描述
IC,BALLAST/BACKLIGHT CONTROLLER/DRIVER,SOP,24PIN,PLASTIC

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UBA2071AT/N1 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	SOP, SOP24,.4	Reach Compliance Code：	unknown
风险等级：	5.82	JESD-30 代码：	R-PDSO-G24
端子数量：	24	最高工作温度：	100 °C
最低工作温度：	-25 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP24,.4
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
电源：	12 V	认证状态：	Not Qualified
子类别：	Switching Regulator or Controllers	标称供电电压 (Vsup)：	12 V
表面贴装：	YES	温度等级：	OTHER
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	Base Number Matches：	1

UBA2071AT/N1 数据手册

UBA2071; UBA2071A

Half bridge control IC for CCFL backlighting

Rev. 01 — 23 June 2008

Product data sheet

1. General description

The UBA2071 and UBA2071A are high voltage ICs intended to drive Cold Cathode

Fluorescent Lamps (CCFLs) or External Electrode Fluorescent Lamps (EEFLs) for

backlighting applications. They can drive a half bridge circuit made up of two NMOSFETs

with a supply voltage of up to 550 V, so the inverter can be supplied directly from a 400 V

PFC bus.

The UBA2071 and UBA2071A contain a controller, a level shifter, a bootstrap diode and

drivers for the external half bridge power switches. It also contains a low frequency PWM

generator, which can be used to control the brightness level of the lamps, using an analog

brightness/dimming control voltage. PWM dimming can also be realized, using a digital

PWM input signal. PWM dimming can be synchronized with other ICs. The lamp current is

controlled by means of a true zero voltage switching resonant control principle, ensuring

lowest possible switch losses in the half bridge power structure.

The UBA2071 is designed to be supplied by a ∆V/∆t supply from the half bridge circuit that

it drives. The IC itself needs little current and if the IC is off, a clamp protects the supply

voltage from getting too high.

The UBA2071A is designed to be supplied by a ﬁxed 12 V supply. It has a lower supply

start voltage and no supply clamp.

2. Features

I Suitable for operating in a very wide inverter supply voltage range (up to 550 V DC).

I Integrated level shifter.

I Integrated bootstrap diode.

I Lamp current control by means of a true zero voltage switching resonant control

principle.

I Sample & Hold circuit, maintaining current control value during PWM lamp-off

situation.

I Separately deﬁnable time constants for current control loop and PWM dimming

attack/decay setting.

I Overvoltage control.

I Overcurrent protection.

I Ignition failure detection.

I Hard switching control.

I Arcing detection.

I Open/short pin protections on feedback pins.

I Integrated, programmable fault timer.

12 3 4 5 6 7...35

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与UBA2071AT/N1相关器件

型号	品牌	获取价格	描述	数据表
UBA2071AT/N1,118	NXP	获取价格	UBA2071AT - Half bridge control IC for CCFL backlighting SOP 24-Pin
UBA2071ATS	NXP	获取价格	Half bridge control IC for CCFL backlighting
UBA2071ATS/N1	NXP	获取价格	IC,BALLAST/BACKLIGHT CONTROLLER/DRIVER,SSOP,24PIN,PLASTIC
UBA2071ATS/N1,118	NXP	获取价格	UBA2071ATS - Half bridge control IC for CCFL backlighting SSOP2 24-Pin
UBA2071T	NXP	获取价格	Half bridge control IC for CCFL backlighting
UBA2071TS	NXP	获取价格	Half bridge control IC for CCFL backlighting
UBA2072	NXP	获取价格	Low Voltage Full-bridge control IC for CCFL backlighting
UBA2072_1	NXP	获取价格	Low Voltage Full-bridge control IC for CCFL backlighting
UBA2072_2	NXP	获取价格	Low Voltage Full-bridge control IC for CCFL backlighting
UBA2072_3	NXP	获取价格	Low Voltage Full-bridge control IC for CCFL backlighting

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