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TPS40075 Fiches technique(PDF) 4 Page - Texas Instruments

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No de pièce TPS40075
Description  4.5V TO 18V INPUT 10 PIN SYNCHRONOUS BUCK CONTROLLER WITH POWER GOOD
Download  35 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS40075 Fiches technique(HTML) 4 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
TPS40192, TPS40193
SLUS719 – MARCH 2007
TJ = –40°C to 85°C, VVDD= 12 Vdc, all parameters at zero power dissipation (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
REFERENCE
0
°C ≤ T
J ≤ 85°C
588
591
594
VFB
Feedback voltage range
mV
-40
°C ≤ T
J ≤ 85°C
585
591
594
INPUT SUPPLY
VVDD
Input voltage range
4.5
18.0
V
VENABLE = 3 V
2.5
4.0
mA
IVDD
Operating current
VENABLE = 0.6 V
45
70
μA
ON BOARD REGULATOR
V5VBP
Output voltage
VVDD > 6 V, I5VBP ≤ 10 mA
5.1
5.3
5.5
V
VDO
Regulator dropout voltage
VVDD - VBP5 , VVDD = 5 V, IBP5 ≤ 25 mA
350
550
mV
ISC
Regulator current limit threshold
50
mA
IBP5
Average current
50
OSCILLATOR
TPS40193
240
300
360
fSW
Switching frequency
kHz
TPS40192
500
600
700
VRMP
Ramp amplitude(1)
1
V
PWM
DMAX
Maximum duty cycle(1)
85%
tON(min)
Minimum controlled pulse(1)
110
HDRV off to LDRV on
50
ns
tDEAD
Output driver dead time
LDRV off to HDRV on
25
SOFT-START
tSS
Soft-start time
3
4
6
tSSDLY
Soft-start delay time
2
ms
tREG
Time to regulation
6
ERROR AMPLIFIER
GBWP
Gain bandwidth product(1)
7
10
MHz
AOL
DC gain(1)
60
dB
Input bias current (current out of FB
IIB
100
nA
pin)
IEAOP
Output source current
VFB = 0 V
1
mA
IEAOM
Output sink current
VFB = 2 V
1
SHORT CIRCUIT PROTECTION
tPSS(min)
Minimum pulse during short circuit(1)
250
ns
tBLNK
Blanking time(1)
60
90
120
tOFF
Off-time between restart attempts
30
50
ms
RCOMP(GND) = OPEN, TJ = 25°C
160
200
240
Short circuit comparator threshold
VILIM
RCOMP(GND) = 4 kΩ, TJ = 25°C
80
100
120
voltage
mV
RCOMP(GND) = 12 kΩ, TJ = 25°C
228
280
342
Short circuit threshold voltage on
VILIMH
TJ = 25°C
400
550
650
high-side MOSFET
(1)
Ensured by design. Not production tested.
4
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