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參數(shù)資料
| 型號： | TPS61058DRC |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | SYNCHRONOUS BOOST CONVERTER WITH DOWN MODE HIGH POWER WHITE LED DRIVER |
| 中文描述： | 同步升壓轉(zhuǎn)換器斷電模式高功率白光LED驅(qū)動 |
| 文件頁數(shù)： | 1/30頁 |
| 文件大?。?/td> | 1684K |
| 代理商： | TPS61058DRC |
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(3,25 mm x 3,25 mm)
www.ti.com
FEATURES
80% Efficient Synchronous Boost Converter
– 500-mA LED Current From 3.3-V Input
(TPS61058)
– 800-mA LED Current From 3.3-V Input
(TPS61059)
Input Voltage Range: 2.7 V to 5.5 V
Fixed Frequency 650 kHz (Typ) Operation
LED Disconnect During Shutdown
Open/Shorted LED Protection
Over-Temperature Protection
Low Shutdown Current: 100 nA (Typ)
Total Solution Of Less Than 80 mm
2
Small 3mm x 3mm QFN-10 Package
DESCRIPTION
The
TPS61058/9
synchronous
integrated down conversion mode. The devices are
optimized for driving high power single cell white
LEDs up to 800 mA from a 2.7-V to 5.5-V input. The
LED current can be programmed to different levels
(e.g. torch, flashlight) by a set of external resistors.
APPLICATIONS
Torch/Camera White LED Supply for Cell
Phones, Smart-Phones and PDAs
CIN
22
μ
F
L1
VIN
4.7
μ
H
2.7 V . . 5.5 V
GND
GND
TPS61058
SW
PVIN
EN
VIN
VOUT
FB
PGND
C1, C2, C3
x3
D1
C3
Rs
R2
R1
22 k
R5
IOK
R3
56 k
R4
62 k
FLASH ON (0/1.8 V)
22
μ
F
39 k
1.5
1 nF
5.6 k
0
10
20
30
40
50
60
70
80
90
100
2.70
3.10
3.50
3.90
4.30
4.70
5.10
5.50
V -InputVoltage-V
I
LEDPowerEfficiency(P
/P )-%
LED
IN
I
=500mA @V =3.7V
LED
F
TPS61058
TPS61059
SLVS572B–APRIL 2005–REVISED DECEMBER 2005
SYNCHRONOUS BOOST CONVERTER WITH DOWN MODE
HIGH POWER WHITE LED DRIVER
devices
dc-dc
are
converters
fixed
frequency,
with
boost
an
The boost converter is based on a 650 kHz fixed
frequency, pulse-width-modulation (PWM) controller
using a synchronous rectifier to obtain maximum
efficiency. The maximum peak current in the boost
switch is limited to 1000 mA (TPS61058) and 1500
mA (TPS61059).
The converter can be disabled to maximize battery
life. In the shutdown mode, the load is completely
disconnected and the current consumption is reduced
to less than 1 μA. Built-in precharge and soft-start
circuitry prevents excessive inrush current during
start-up.
The
PowerPAD package measuring 3 mm x 3 mm
(DRC).
device
is
packaged
in
a
10-pin
QFN
Figure 1. 500 mA Flashlight Application
Figure 2. Flashlight Efficiency vs V
IN
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.
PowerPAD is a trademark 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 2005, Texas Instruments Incorporated
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS61058DRCR | 功能描述:LED照明驅(qū)動器 Hi-Power Single Cell White LED Driver 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 |
| TPS61058DRCR | 制造商:Texas Instruments 功能描述:IC LED DRIVER PHOTO FLASH 10-SON |
| TPS61058DRCRG4 | 功能描述:LED照明驅(qū)動器 Hi-Power Single Cell White LED Driver 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 |
| TPS61059 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SYNCHRONOUS BOOST CONVERTER WITH DOWN MODE HIGH POWER WHITE LED DRIVER |
| TPS61059DRC | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SYNCHRONOUS BOOST CONVERTER WITH DOWN MODE HIGH POWER WHITE LED DRIVER |
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