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TPS62042DRCRG4 Fiches technique(PDF) 3 Page - Texas Instruments

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No de pièce TPS62042DRCRG4
Description  1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER
Download  30 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS62042DRCRG4 Fiches technique(HTML) 3 Page - Texas Instruments

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TPS62040
TPS62042, TPS62043
TPS62044, TPS62046
SLVS463B − JUNE 2003 − REVISED OCTOBER 2005
www.ti.com
3
ELECTRICAL CHARACTERISTICS
VI = 3.6 V, VO = 1.8 V, IO = 600 mA, EN = VIN, TA = −40°C to 85°C, typical values are at TA = 25°C (unless otherwise noted)(1)
SUPPLY CURRENT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VI
Input voltage range
2.5
6.0
V
I(Q)
Operating quiescent current
IO = 0 mA, device is not switching
18
35
µA
ISD
Shutdown supply current
EN = GND
0.1
1
µA
VUVLO
Under−voltage lockout threshold
1.5
2.3
V
ENABLE AND MODE
VEN
EN high level input voltage
1.4
V
VEN
EN low level input voltage
0.4
V
IEN
EN input bias current
EN = GND or VIN
0.01
1.0
µA
V(MODE)
MODE high level input voltage
1.4
V
V(MODE)
MODE low level input voltage
0.4
V
I(MODE)
MODE input bias current
MODE = GND or VIN
0.01
1.0
µA
POWER SWITCH
r
P-channel MOSFET on−resistance
VI = VGS = 3.6 V
115
210
mΩ
rDS(ON)
P-channel MOSFET on−resistance
VI = VGS = 2.5 V
145
270
mΩ
Ilkg(P)
P-channel leakage current
VDS = 6.0 V
1
µA
r
N-channel MOSFET on−resistance
VI = VGS = 3.6 V
85
200
mΩ
rDS(ON)
N-channel MOSFET on−resistance
VI = VGS = 2.5 V
115
280
mΩ
IIkg(N)
N-channel leakage current
VDS = 6.0 V
1
µA
IL
P-channel current limit
2.5 V < VI< 6.0 V
1.5
1.85
2.2
A
Thermal shutdown
150
°C
OSCILLATOR
f
Oscillator frequency
VFB = 0.5 V
1
1.25
1.5
MHz
fS
Oscillator frequency
VFB = 0 V
625
kHz
OUTPUT
VO
Adjustable output voltage range
TPS62040
0.7
VIN
V
Vref
Reference voltage
0.5
V
VFB
Feedback voltage
TPS62040
Adjustable
VI = 2.5 V to 6.0 V; IO= 0 mA
VI = 2.5 V to 6.0 V; 0 mA ≤ IO ≤ 1.2 A
0%
−3%
3%
3%
TPS62042
1.5V
VI = 2.5 V to 6.0 V; IO = 0 mA
VI = 2.5 V to 6.0 V; 0 mA ≤ IO ≤ 1.2 A
0%
−3%
3%
3%
V
Fixed output voltage
TPS62043
1.6V
VI = 2.5 V to 6.0 V; IO = 0 mA
VI = 2.5 V to 6.0 V; 0 mA ≤ IO ≤ 1.2 A
0%
−3%
3%
3%
VO
Fixed output voltage
TPS62044
1.8V
VI = 2.5 V to 6.0 V; IO = 0 mA
VI = 2.5 V to 6.0 V; 0 mA ≤ IO ≤ 1.2 A
0%
−3%
3%
3%
TPS62046
3.3V
VI = 3.6 V to 6.0 V; IO = 0 mA
VI = 3.6 V to 6.0 V; 0 mA ≤ IO ≤ 1.2 A
0%
−3%
3%
3%
Line regulation(1)
VI = VO + 0.5 V (min. 2.5 V) to 6.0 V,
IO = 10 mA
0
%/V
Load regulation(1)
IO = 10 mA to 1200 mA
0
%/mA
I
Leakage current into SW pin
VI>VO, 0 V ≤ Vsw ≤ VI
0.1
1
µA
IIkg(SW)
Reverse leakage current into pin SW
VI = open; EN = GND; VSW = 6.0 V
0.1
1
µA
f
Short circuit switching frequency
VFB = 0 V
625
kHz
(1) The line and load regulations are digitally controlled to assure an output voltage accuracy of ±3%.


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