Datasheet > UBA3077HN

UBA3077HN

更新时间： 2024-01-12 17:51:36

品牌	Logo	应用领域
恩智浦 - NXP		驱动器开关
页数	文件大小	规格书
25页	196K
描述
Three-channel switched-mode LED driver

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中文翻译

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技术参数
数据手册

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UBA3077HN 技术参数

生命周期：	Obsolete	零件包装代码：	QFN
包装说明：	,	针数：	40
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.84
接口集成电路类型：	LED DISPLAY DRIVER	JESD-30 代码：	S-PQCC-N40
端子数量：	40	封装主体材料：	PLASTIC/EPOXY
封装形状：	SQUARE	封装形式：	CHIP CARRIER
认证状态：	Not Qualified	表面贴装：	YES
端子形式：	NO LEAD	端子位置：	QUAD
Base Number Matches：	1

UBA3077HN 数据手册

UBA3077HN

Three-channel switched-mode LED driver

Rev. 1 — 8 February 2011

Objective data sheet

1. General description

The UBA3077HN is a high efficiency LED driver in an HVQFN40 package for general LED

lighting or backlighting LCD displays.

Operating from a supply of 10 V to 42 V, it can drive up to 3 strings of 20 LEDs each. The

low voltage circuitry is powered by an external 5 V voltage supply.

The chip can operate autonomously or be controlled via a 400 kHz I²C-bus.

The peak current in each string is fixed by an external resistor. Three independent

Pulse-Width Modulated (PWM) signals are available for dimming purposes. These PWM

signals are delivered either directly by the graphic processor (direct control mode) to the

pins PWM1, PWM2 and PWM3, or generated on-board based on data sent via the

I²C-bus interface.

Each LED string is supplied by its own boost converter delivering an output voltage from

_INup to 75 V. The switching frequency is 500 kHz.

A power saving mode is entered when all PWM signals stay LOW for a period longer than

1 s.

Several protection mechanisms are available: overvoltage, short-circuit and open LED,

overcurrent, UnderVoltage LockOut (UVLO) and overtemperature with an advanced

adaptive protection. An error self-recovery (hiccup) mechanism is available with

programmable delay time via an external capacitor.

2. Features and benefits

Three-channel LED backlight driver

Up to 150 mA per channel

±2 % absolute LED current accuracy

Peak LED current programmable with

and channel-to-channel matching

external resistor

External power supply voltage from 10 V Three boost converters from V_INup to

to 42 V and 5 V for low voltage circuitry

Constant 500 kHz frequency peak

current mode control

75 V output voltage

High efficiency up to 90 %

Low value output capacitor (2 μF)

14-bit PWM dimming (either defined by

system-generated PWMs, or internally

generated) from 2.0 kHz to 24 kHz (duty

cycle from 0.1 % to 100 %)

Accurate internal oscillator

All power FETs integrated

12 3 4 5 6 7...25

中文翻译

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与UBA3077HN相关器件

型号	品牌	获取价格	描述	数据表
UBA3077HN/1,518	NXP	获取价格	Three-channel switched-mode LED driver, SOT618-1 Package, Standard Markigg, Reel Dry Pack,
UBA-4P-S14E	JST	获取价格	符合USB（通用串行总线）2.0标准的连接器。有两种类型（A和B型）。完善的EMI对策。对
UBA-4R-D14-4D	JST	获取价格	符合USB（通用串行总线）2.0标准的连接器。有两种类型（A和B型）。完善的EMI对策。对
UBA-4R-D14C2-4D	JST	获取价格	符合USB（通用串行总线）2.0标准的连接器。有两种类型（A和B型）。完善的EMI对策。对
UBA-4R-D14T-4D	JST	获取价格	符合USB（通用串行总线）2.0标准的连接器。有两种类型（A和B型）。完善的EMI对策。对
UBA-4R-S14-4S	JST	获取价格	符合USB（通用串行总线）2.0标准的连接器。有两种类型（A和B型）。完善的EMI对策。对
UBA-4R-S14A-4S	JST	获取价格	符合USB（通用串行总线）2.0标准的连接器。有两种类型（A和B型）。完善的EMI对策。对
UBA-4R-S14B-4S	JST	获取价格	符合USB（通用串行总线）2.0标准的连接器。有两种类型（A和B型）。完善的EMI对策。对
UBA-4R-S14C-4S	JST	获取价格	符合USB（通用串行总线）2.0标准的连接器。有两种类型（A和B型）。完善的EMI对策。对
UBA-4R-S14HD-4S	JST	获取价格	符合USB（通用串行总线）2.0标准的连接器。有两种类型（A和B型）。完善的EMI对策。对

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