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TPS51117PWG4 датащи(PDF) 4 Page - Texas Instruments

номер детали TPS51117PWG4
подробное описание детали  SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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TPS51117PWG4 датащи(HTML) 4 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS (Continued)
TPS51117
SLVS631 – DECEMBER 2005
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
UVLO/LOGIC THRESHOLD
Wake up
3.7
3.9
4.1
V
VUVLO
V5FILT UVLO Threshold
Hysteresis
200
300
400
mV
EN_PSV low
0.7
1.0
1.3
V
Hysteresis
150
200
250
mV
EN_PSV logic input
VEN_PSV
EN_PSV float (set PWM_only mode)
1.7
1.95
2.25
V
voltage
EN_PSV high (set Auto_skip mode)
2.4
2.65
2.9
V
Hysteresis
100
175
250
mV
IEN_PSV
EN_PSV source current
EN_PSV = GND, absolute value(1)
1
µA
POWERGOOD COMPARATOR
PG in from lower (PGOOD goes high)
92.5%
95%
97.5%
PG low hysteresis (PGOOD goes low)
–4%
–5.5%
–7%
VTHPG
PG threshold
PG in from higher (PGOOD goes high)
102%
105%
107%
PG high hysteresis (PGOOD goes low)
4%
5.5%
7%
IPGMAX
PG sink current
PGOOD = 0.5 V
2.5
7.5
mA
TPGDEL
PG delay
Delay for PGOOD in
45
63
85
µs
CURRENT SENSE
ITRIP
TRIP source current
VTRIP < 0.3 V, TA = 25°C
9
10
11
µA
ITRIP temperature
TCITRIP
On the basis of 25
°C
4500
ppm/
°C
coefffecient
Current limit threshold
VRtrip
VTRIP-GND voltage(1), all temperatures
30
200
mV
range setting range
Overcurrent limit
VOCLoff
(VTRIP-GND-VPGND-LL) voltage VTRIP-GND = 60 mV
–10
0
10
mV
comparator offset
Negative overcurrent limit
(VTRIP-GND-VLL-PGND) voltage VTRIP-GND = 60 mV,
VUCLoff
–9.5
0.5
10.5
mV
comparator offset
EN_PSV = float
Zero crossing comparator
VZCoff
VPGND-LL voltage, EN_PSV = 3.3 V
–9.5
0.5
10.5
mV
offset
UNDERVOLTAGE AND OVERVOLTAGE PROTECTION
VOVP
VFB OVP trip threshold
OVP detect
111%
115%
119%
VFB OVP propagation
TOVPDEL
See (1)
1.5
µs
delay
UVP detect
65%
70%
75%
VUVP
VFB UVP trip threshold
Hysteresis
10%
TUVPDEL
VFB UVP delay
22
32
42
µs
TUVPEN
UVP enable delay
After 1.7
× T
SS, UVP protection engaged
1.4
2
2.6
ms
THERMAL SHUTDOWN
Shutdown temperature(1)
160
°C
Thermal shutdown
TSDN
threshold
Hysteresis(1)
12
°C
(1)
Ensured by design. Not production tested.
4


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