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TPS61054 Datasheet(PDF) 3 Page - Texas Instruments

Part # TPS61054
Description  HIGH POWER WHITE LED DRIVER 2-MHz SYNCHRONOUS BOOST CONVERTER WITH STANDARD LOGIC INTERFACE
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS61054 Datasheet(HTML) 3 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
TPS61054, TPS61055
www.ti.com .................................................................................................................................................. SLUS760A – SEPTEMBER 2007 – REVISED MAY 2008
Unless otherwise noted the specification applies for VIN = 3.6 V over an operating junction temp. of –40°C ≤ TJ ≤ 125°C.
Typical values are for TA = 25°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY CURRENT
Input voltage range
2.5
6.0
V
VIN
Minimum input voltage for start-up
MODE0 = 1, MODE1 = 1, RL = 10 Ω
2.5
V
IQ
Operating quiescent current into AVIN
MODE0 = 1, MODE1 = 1
8.5
mA
ISD
Shutdown current into AVIN
MODE0 = 0, MODE1 = 0, –40
°C ≤ T
J ≤ 85°C
0.3
3.0
µA
VUVLO
Undervoltage lockout threshold
VIN falling
2.3
2.4
V
OUTPUT
Current regulator mode
VIN
5.5
VOUT
Output voltage range
V
Voltage regulator mode
5.0
OVP Output overvoltage protection
VOUT rising
5.7
6.0
6.25
V
OVP
Output overvoltage protection hysterisis
0.15
V
D
Minimum duty cycle
7.5%
0.25 V
≤ VLED ≤ 2.0 V, ILED = ITORCH, TJ = 50°C
–15%
15%
LED current accuracy(1)
0.25 V
≤ VLED ≤ 2.0 V, ILED = IFLASH, TJ = 50°C
–12%
12%
LED current temperature coefficient
0.08
%/
°C
DC output voltage accuracy
2.5 V
≤ VIN ≤ 0.9 VOUT, PWM operation
–3%
3%
VLED
LED sense voltage
Boost Mode
250
mV
LED input leakage current
VLED = VOUT = 5 V, –40°C ≤ TJ ≤ 85°C
0.1
1
µA
POWER SWITCH
Switch MOSFET on-resistance
80
rDS(on)
VOUT = VGS = 3.6 V
m
Rectifier MOSFET on-resistance
80
Switch MOSFET leakage
0.1
1
Ilkg(SW)
VDS = 6.0 V, –40°C ≤ TJ ≤ 85°C
µA
Rectifier MOSFET leakage
0.1
1
2.5 V
≤ VIN ≤ 6.0 V, ILIM = 00
850
1000
1150
Ilim
Switch current limit
mA
1275
1500
1725
2.5 V
≤ VIN ≤ 6.0 V, ILIM = 01
(1)
140
160
°C
Thermal shutdown (1)
20
°C
Thermal shutdown hysteresis (1)
OSCILLATOR
fSW
Oscillator frequency
1.8
2.0
2.2
MHz
MODE0, MODE1, Tx-TOFF, FLASH_SYNC
V(IH)
High-level input voltage
1.2
V
V(IL)
Low-level input voltage
0.4
V
I(LKG)
Logic input leakage current
Input connected to VIN or GND, –40°C ≤ TJ ≤ 85°C
0.01
0.1
µA
Tx-TOFF pull-down resistance
Tx-TOFF
≤ 0.4 V
400
k
FLASH_SYNC pull-down resistance
FLASH_SYNC
≤ 0.4 V
400
k
TIMING
From shutdown into flash mode ILED = 700 mA
1.2
ms
Start-up time
From shutdown into voltage mode
650
µs
MODE0 = 1, MODE1 = 1, IOUT = 0 mA
LED current settling time(2) triggered by
MODE0 = 0, MODE1 = 1,
160
µs
rising edge on FLASH_SYNC
ILED = from 75mA to 700 mA
LED current settling time(2) triggered by
MODE0 = 0, MODE1 = 1,
20
µs
rising edge on Tx-TOFF
ILED = 700 mA to 75 mA
(1)
Assured by design. Not tested in production.
(2)
Settling time to ±15% of the target value
Copyright © 2007–2008, Texas Instruments Incorporated
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Product Folder Link(s) :TPS61054, TPS61055


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