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TPS61058DRCR Datasheet(PDF) 6 Page - Texas Instruments

No. de pieza TPS61058DRCR
Descripción Electrónicos  SYNCHRONOUS BOOST CONVERTER WITH DOWN MODE HIGH POWER WHITE LED DRIVER
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS61058DRCR Datasheet(HTML) 6 Page - Texas Instruments

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PARAMETER MEASUREMENT INFORMATION
CIN
L1
VIN
22 F
m
4.7 F
m
2.7 V . . 5.5 V
GND
TPS61058/9
GND
PVIN
EN
VIN
SW
VOUT
FB
PGND
C1, C2, C3
x3
D1
C3
Rs
R2
R1
IOK
R3
R4
TORCH ON (0/1.8 V)
22 F
m
22 kW
1 nF (COG)
R6
R5
FLASH (0 . .2 V)
500 mA Flashlight Application
Rs = 1.3
R2 = 56 k
R3 = 100 k
R4 = 2.4 k
R5 = 6.2 k
R6 = 91 k
W
W
W
W
W
W
700 mA Flashlight Application
Rs = 1.2
R2 = 47 k
R3 = 51 k
R4 = 3.3 k
R5 = 4.3 k
R6 = 120 k
W
W
W
W
W
W
List of Components:
L1 = TDK VLF5014AT-4R7
T
C1,C2,C3 = TDK C2012X5R0J226MTJ
C4
(Optional)
C4 = 100 nF
TYPICAL CHARACTERISTICS
TPS61058
TPS61059
SLVS572B – APRIL 2005 – REVISED DECEMBER 2005
Table of Graphs
FIGURE
(TPS61058) LED Power Efficiency
vs. Input Voltage
3
(TPS61059) LED Power Efficiency
vs. Input Voltage
4
(TPS61058) LED Power Efficiency
vs LED Current
5
(TPS61058) DC Input Current
vs. Input Voltage
6
(TPS61058) LED Current
vs. Input Voltage
7
Oscillator Frequency
8
(TPS61059) Current Limit
vs. Temperature
9
Waveforms
Switching Waveforms in Boost Mode (TPS61058)
10
Switching Waveforms in Down-Mode (TPS61058)
11
High Current Flashlight Pulse Waveform (TPS61058)
12
Torch to Flashlight Transistion (TPS61058)
13
Start-Up After Enable (TPS61058)
14
Overvoltage Protection (TPS61058)
15
Duty Cycle Jitter (TPS61058)
16
6


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