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TPS40052PWPR датащи(PDF) 3 Page - Texas Instruments

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номер детали TPS40052PWPR
подробное описание детали  WIDE-INPUT SYNCHRONOUS BUCK CONTROLLER
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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TPS40052PWPR датащи(HTML) 3 Page - Texas Instruments

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TPS40052
SLUS563C − AUGUST 2003 − REVISED FEBRUARY 2005
3
www.ti.com
ELECTRICAL CHARACTERISTICS
TA = −40°C to 85°C, VIN = 12 Vdc, RT = 90.9 kΩ, fSW = 500 kHz, VEA_REF = 1.25 V, all parameters at zero power dissipation (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
INPUT SUPPLY
VIN
Input voltage range, VIN
10
40
V
OPERATING CURRENT
IDD
Quiescent current
Output drivers not switching,
VFB = 1.3 V
1.5
3.0
mA
BP5
VBP5
Ouput voltage
ILOAD = 1 mA
4.5
5.0
5.5
V
OSCILLATOR/RAMP GENERATOR
fOSC
Accuracy
9 V
≤ VIN ≤ 40 V
450
500
550
kHz
VRAMP
PWM ramp voltage(1)
VPEAK−VVAL
2.0
V
VIH
High-level input voltage, SYNC
2
5
V
VIL
Low-level input voltage, SYNC
0.8
V
ISYNC
Input current, SYNC
5
10
µA
Pulse width, SYNC
50
ns
VRT
RT voltage
2.38
2.50
2.58
V
Maximum duty cycle
VFB = 0 V, fSW ≤ 500 kHz
80%
94%
Maximum duty cycle
VFB = 0 V, 500 kHz ≤ fSW ≤ 1 MHz
75%
Minumum duty cycle
VFB ≥ 1.3 V
0%
SOFT START
ISS
Soft-start source current
1.75
2.35
3.05
µA
VSS
Soft-start clamp voltage
3.7
V
tDSCH
Discharge time
CSS = 220 pF
1.6
2.2
2.8
s
tSS
Soft-start time
CSS = 220 pF, 0 V ≤ VSS ≤ 1.6 V
100
155
195
µs
BP10
VBP10
Ouput voltage
9.0
9.6
10.3
V
ERROR AMPLIFIER
VEA_REF Error amplifier reference input voltage(2)
9 V
≤ VIN ≤ 40 V
0.5
0.7
1.5
V
Input offset voltage
0.5 V
≤ VFB ≤ 1.5 V
−5
5
mV
GBW
Gain bandwidth
3
5
MHz
AVOL
Open loop gain
60
80
dB
IOH
High-level output source current
2.0
4.0
mA
IOL
Low-level output sink current
2.5
4.0
mA
VOH
High-level output voltage
ISOURCE = 500 µA
3.2
3.5
V
VOL
Low-level output voltage
ISINK = 500 µA
0.20
0.35
V
IBIAS
Input bias current
VFB = 0.7 V
100
200
nA
(1)
Ensured by design. Not production tested.
(2)
Common mode range extends to ground, but not tested below 500 mV.


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