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TPS61045 Datasheet(PDF) 3 Page - Texas Instruments

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No. de pieza TPS61045
Descripción Electrónicos  DIGITALLY ADJUSTABLE LCD BOOST CONVERTER
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

TPS61045 Datasheet(HTML) 3 Page - Texas Instruments

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SW
8
PGND
7
GND
6
CTRL
5
L
DRB PACKAGE
(TOP VIEW)
1
VIN 2
DO 3
FB 4
Exposed
Thermal
Die Pad
TPS61045
SLVS440A – JANUARY 2003 – REVISED SEPTEMBER 2003
ELECTRICAL CHARACTERISTICS
V
I = 2.4 V, CTRL = VI, VO = 18.0 V, IO = 10 mA, 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
IQ
Operating quiescent current
IO = 0 mA, not switching
40
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 AND DAC OUTPUT
VIH
CTRL high level input voltage
1.3
V
VIL
CTRL low level input voltage
0.3
V
Ilkg
CTRL input leakage current
CTRL = GND or VIN
0.1
µA
VO(DO)
DAC output voltage range
0
1.233
V
DAC resolution
6 Bit
19.6
mV
VO(DO)
DAC center output voltage
CTRL = high
607
mV
IO(SINK)
Maximum DAC sink current
30
µA
t(UP)
Increase output voltage one step
CTRL = high to low
1
60
µs
t(DWN)
Decrease the output voltage one step
CTRL = high to low
140
240
µs
td1
Delay time between up/down steps
CTRL = low to high
1
µs
t(OFF)
Shutdown
CTRL = high to low
560
µs
INPUT SWITCH (Q1), MAIN SWITCH (Q2) AND CURRENT LIMIT
VSW(Q2) Main switch maximum voltage (Q2)
30
V
rds(ON)
Main switch MOSFET on-resistance
VI = 2.4 V; IS = 200 mA
400
800
m
Ilkg(MAIN) Main switch MOSFET leakage current
VS = 28 V
0.1
10
µA
I(LIM)
Main switch MOSFET current limit
300
375
450
mA
rds(ON)
Input switch MOSFET on-resistance
VI= 2.4 V; IS = 200 mA
1
2
Ilkg(IN)
Input switch MOSFET leakage current
VL = GND, VI = 6 V
0.1
10
µA
OUTPUT
VO
Output voltage range
Vin
28
V
Vref
Internal voltage reference
1.233
V
I(FB)
Feedback input bias current
VFB = 1.3 V
30
100
nA
V(FB)
Feedback trip point voltage
1.8 V
≤ V
I≤ 6.0 V; VO = 18 V, I(LOAD)= 10
1.208
1.233
1.258
V
mA
(A) The Exposed Thermal Die Pad is connected to PGND. Connect this pad directly with the GND pin.
3


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