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| 型号： | UBA3070T/N1,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR WHITE BCKLGT 8-SOIC |
| 标准包装： | 1 |
| 拓扑： | PWM，降压（降压） |
| 输出数： | 1 |
| 内部驱动器： | 无 |
| 类型 - 主要： | 背光，通用 |
| 类型 - 次要： | RGB，白色 LED |
| 频率： | 145kHz ~ 205kHz |
| 电源电压： | 9.3 V ~ 10.6 V |
| 输出电压： | 11.5V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 标准包装 |
| 其它名称： | 568-4924-6 |
UBA3070
LED backlight driver IC
Rev. 3 — 9 December 2010
Product data sheet
1. General description
The UBA3070 driver IC is the first member of a first generation of power-efficient LED
backlight driver ICs. Highly efficient, flexible and reliable LED drivers can easily be
designed using the UBA3070 control IC.
2. Features and benefits
Switch-mode buck controller that drives strings of LEDs up to 600 V power-efficiently
Controller with power-efficient Boundary Conduction Mode (BCM) operation:
Virtually no reverse recovery losses in freewheel diode
Zero Current Switching (ZCS) at switch, switch-on
Zero voltage or valley switching at switch, switch-on
Minimal required inductance value and size
Suitable for direct Pulse Width Modulation (PWM) dimming
Fast transient response through cycle-by-cycle current control, thereby:
Preventing over or undershoots in the Light Emitting Diode ( LED) current
Enabling efficient PWM dimming by quickly turning the converter on and off and
thus removing the need for extra dimming switches and high-side drivers
Single controlled input voltage required for all UBA3070 driven LED strings in RGB or
white backlighting units
No binning on LED forward voltage required
Protections:
UnderVoltage LockOut (UVLO)
Leading Edge Blanking (LEB)
OverCurrent Protection (OCP)
OverTemperature Protection (OTP)
Low cost LED driver solution:
No fast-switching Schottky diode required due to ZCS
No dimming switch or high-side driver required for PWM dimming
Operates with smaller inductor then a comparable fixed-frequency Continuous
Conduction Mode (CCM) controller
3. Applications
The UBA3070 is suitable for high voltage LED lighting application:
LED backlighting in LCD televisions and monitors
General lighting applications
The UBA3070 application is most efficient when driving long LED strings
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