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TPS61042DRBR Datasheet(PDF) 3 Page - Texas Instruments

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Part # TPS61042DRBR
Description  CONSTANT CURRENT LED DRIVER
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS61042DRBR Datasheet(HTML) 3 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
TPS61042
SLVS441C – DECEMBER 2002 – REVISED MARCH 2007
V
I = 3.6 V, CTRL= VI, TA = -40°C to + 85°C, typical values are at TA= 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Supply current
VI
Input voltage range
1.8
6.0
V
I(Q)
Operating quiescent current into VIN
IO = 0 mA, not switching
38
65
µA
IO(sd)
Shutdown current
CTRL = GND
0.1
1
µA
VUVLO
Under-voltage lockout threshold
VI falling
1.5
1.7
V
CTRL
VIH
CTRL high level input voltage
1.3
V
VIL
CTRL low level input voltage
0.3
V
IIkg
CTRL input leakage current
CTRL = GND or VIN
0.1
µA
ton
Minimum CTRL pulse width to enable
CTRL = low to high
50
us
toff
Minimum CTRL pulse width to disable
CTRL = high to low
10
32
ms
f(CTRL)
PWM switching frequency applied to
0.1
50
kHz
CTRL
D(CTRL)
PWM duty cycle applied to CTRL
1%
100%
Power switch and current limit (SW)
VS
Maximum switch voltage
30
V
rds(ON)
MOSFET on-resistance
VI = 3.6 V; I(SW) = 200 mA
300
600
m
Ilkg
MOSFET leakage current
V(SW) = 28 V
0.1
10
µA
ILIM
MOFSET current limit
400
500
600
mA
LED switch and current limit (LED)
VS
Maximum switch voltage
30
V
rds(ON)
MOSFET on-resistance
VI = 3.6 V; IS = 20 mA
1
2
Ilkg
MOSFET leakage current
V(LED)= 28 V
0.1
10
µA
Output
VO
Output voltage range
VI
27.5
V
I(FB)
Feedback input bias current(1)
V(FB) = 0.252 V
100
nA
VFB
Feedback trip point voltage
1.8 V
≤ V
I≤ 6 V
244
252
260
mV
V(OVP)
Output overvoltage protection
VO rising
27.5
29
30
V
Vhys(OVP) Output overvoltage protection hysteresis
5
7
V
I(OVP)
OVP input current
VO = 15 V
9
12
µA
(1)
The feedback input is high impedance MOSFET Gate input.
3
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