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参数资料
| 型号： | TPS61060DRB |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 显示驱动器 |
| 英文描述： | LED DISPLAY DRIVER, PDSO8 |
| 封装： | 3 X 3 MM, PLASTIC, SON-8 |
| 文件页数： | 3/25页 |
| 文件大小： | 761K |
| 代理商： | TPS61060DRB |
www.ti.com
td
tup
td
tdown
toff
Brightness
Control
Disabled
Brightness
Control
Enabled
Brightness
Control Disabled
High
Low
ILED
td
EFFICIENCY AND FEEDBACK VOLTAGE
UNDERVOLTAGE LOCKOUT
THERMAL SHUTDOWN
CHIPSCALE PACKAGE DIMENSIONS
TPS61060
TPS61061
TPS61062
SLVS538A – NOVEMBER 2004 – REVISED APRIL 2005
Table 1. Increase/Decrease Internal Reference Voltage
FEEDBACK VOLTAGE
TIME
ILED LOGIC LEVEL
Increase
1 s to 75 s
Low
Decrease
180 s to 300 s
Low
Brightness control disabled
≥550 s
Low
Delay between steps
1.5 s
High
Between each cycle the ILED pin needs to be pulled high for 1.5 s.
Figure 15. ILED Timing Diagram
Using the digital interface on the ILED pin allows simple implementation of a two-step brightness control by
pulling the ILED either high or low. For full LED current with VFB = 500 mV, the ILED needs to be pulled low; to
program half the LED current with VFB = 250 mV, the ILED pin needs to be pulled high.
The feedback voltage has a direct effect on the converter efficiency. Because the voltage drop across the
feedback resistor does not contribute to the output power (LED brightness), the lower the feedback voltage, the
higher the efficiency. Especially when powering only three or less LEDs, the feedback voltage impacts the
efficiency around 2% depending on the sum of the forward voltage of the LEDs. To take advantage of this, the
ILED pin can be connected to VIN, setting the feedback voltage to 250 mV.
An undervoltage lockout prevents mis-operation of the device at input voltages below typical 1.65 V. When the
input voltage is below the undervoltage threshold, the device remains off and both internal MOSFETs are turned
off providing isolation between input and output.
An internal thermal shutdown is implemented and turns off the internal MOSFETs when the typical junction
temperature of 160°C is exceeded. The thermal shutdown has a hysteresis of typically 15°C.
The TPS6106x is available in a Chipscale package and has the following mechanical dimensions: E=D=1,446
mm (typ), E=D=1,424 mm (min), E=D=1,5 mm (max). See the mechanical drawing of the package (YZF).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS61060DRBR | 功能描述:LED照明驱动器 15V 400mA Switch 1MHz Boost Converter RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| TPS61060DRBRG4 | 功能描述:LED照明驱动器 15V 400mA Switch 1MHz Boost Converter RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| TPS61060YZF | 制造商:TI 制造商全称:Texas Instruments 功能描述:CONSTANT CURRENT LED DRIVER WITH DIGITAL AND PWM BRIGHTNESS CONTROL |
| TPS61060YZFR | 功能描述:LED照明驱动器 15V 400mA Switch 1MHz Boost Converter RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| TPS61060YZFT | 功能描述:LED照明驱动器 15V 400mA Switch 1MHz Boost Converter RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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