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參數(shù)資料
| 型號(hào)： | TPS61062DRB |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | CONSTANT CURRENT LED DRIVER WITH DIGITAL AND PWM BRIGHTNESS CONTROL |
| 中文描述： | 恒定電流LED驅(qū)動(dòng)器，帶有數(shù)字和PWM亮度控制 |
| 文件頁數(shù)： | 1/22頁 |
| 文件大小： | 609K |
| 代理商： | TPS61062DRB |
www.ti.com
FEATURES
LED Driver With Integrated Overvoltage and
Short-Circuit Protection
2.7-V to 6.0-V Input Voltage Range
500-mV/250-mV Feedback Voltage
TPS61060 Powers Up to 3 LEDs
TPS61061 Powers Up to 4 LEDs
TPS61062 Powers Up to 5 LEDs
PWM Brightness Control on Enable
Digital Brightness Control on ILED
1.0-MHz Fixed Switching Frequency
400-mA Internal Power MOSFET Switch
LEDs Disconnected During Shutdown
Operates With Small-Output Capacitors
Down to 220 nF
APPLICATIONS
White LED Driver
Cellular Phones
PDA, Pocket PC, and Smart Phones
Digital Still Camera
Handheld Devices
DESCRIPTION
The TPS61060/61/62 is a high-frequency, synchronous boost converter with constant current output to drive up
to 5 white LEDs. For maximum safety, the device features integrated overvoltage and an advanced short-circuit
protection when the output is shorted to ground. The device operates with 1-MHz fixed switching frequency to
allow small external components and to simplify possible EMI problems. The device comes with three different
overvoltage protection thresholds (14 V/18 V/23 V) to allow inexpensive and small-output capacitors with lower
voltage ratings. The LED current is initially set with the external sense resistor Rs, and the feedback voltage is
regulated to 500 mV or 250 mV, depending on the ILED pin configuration. Digital brightness control is
implemented by applying a simple digital signal to the ILED pin. Alternatively, a PWM signal up to 1 kHz can be
applied to the enable pin to control the LED brightness. During shutdown, the output is disconnected from the
input to avoid leakage current through the LEDs.
TYPICAL APPLICATION
VIN
EN
ILED
GND
SW
OUT
FB
PGND
VIN
2.7 V to 6 V
C1
1 F
L1
22 H
R
S
12
C2
220 nF
TPS61060
TPS61061
TPS61062
SLVS538–NOVEMBER 2004
CONSTANT CURRENT LED DRIVER WITH DIGITAL AND PWM BRIGHTNESS CONTROL
Up to 80% Efficiency
8-Pin NanoFreePackage (Chipscale, CSP)
3
×
3-mm QFN Package
Figure 1.
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.
NanoFree, PowerPAD are trademarks of Texas Instruments.
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.
Copyright 2004, Texas Instruments Incorporated
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS61062DRBR | 功能描述:LED照明驅(qū)動(dòng)器 24V 400mA Switch 1MHz Boost Converter RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| TPS61062DRBRG4 | 功能描述:LED照明驅(qū)動(dòng)器 24V 400mA Switch 1MHz Boost Converter RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| TPS61062YZF | 制造商:TI 制造商全稱:Texas Instruments 功能描述:CONSTANT CURRENT LED DRIVER WITH DIGITAL AND PWM BRIGHTNESS CONTROL |
| TPS61062YZFR | 功能描述:LED照明驅(qū)動(dòng)器 24V 400mA Switch 1MHz Boost Converter RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| TPS61062YZFT | 功能描述:LED照明驅(qū)動(dòng)器 24V 400mA Switch 1MHz Boost Converter RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
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