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TPS53316RGTR Datasheet(PDF) 4 Page - Texas Instruments

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Part # TPS53316RGTR
Description  High-Efficiency, 5-A Step-Down Regulator with Integrated Switcher
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS53316RGTR Datasheet(HTML) 4 Page - Texas Instruments

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TPS53316
SLUSAP5
– DECEMBER 2011
www.ti.com
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range, VIN = 3.3V, PGND = GND (unless otherwise noted)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY: VOLTAGE, CURRENTS, AND UVLO
VVIN
VIN supply voltage
Nominal input voltage range
2.9
6.0
V
IVIN(sdn)
VIN shutdown current
EN = LO
15
µA
IVIN
VIN supply current
EN = HI, VFB = 0.63 V, No load
2.0
3.5
mA
VUVLO
VIN UVLO threshold
Ramp up; EN =HI
2.8
V
VUVLO(hys)
VIN UVLO hysteresis
VIN UVLO hysteresis
120
mV
VREG3
LDO output
VVIN = 5 V, 0 ≤ IDD ≤ 5 mA
3.135
3.3
3.465
V
VOLTAGE FEEDBACK LOOP: VREF AND ERROR AMPLIFIER
VVREF
VREF
Internal precision reference voltage
0.6
V
0
°C ≤ TA≤ 85°C
–1%
1%
TOLVREF
VREF tolerance
–40°C ≤ TA≤ 85°C
–1.25%
1.25%
UGBW(1)
Unity gain bandwidth
14
MHz
AOL
(1)
Open loop gain
80
dB
IFBINT
FB input leakage current
Sourced from FB pin
30
nA
Outaput sinking and sourcing
IEA(max)
(1)
CCOMP = 20 pF
5
mA
current
SR(1)
Slew rate
5
V/
µs
OCP: OVERCURRENT AND ZERO CROSSING
4.5-A setting, when IOUT exceeds this threshold
for 4 consecutive cycles,
IOCPL3A
(2)
Overcurrent limit on high-side FET
4.05
4.5
4.95
A
VVIN = 3.3V, VOUT = 1.5 V with 1-µH inductor,
fSW = 1.1 MHz, TA= 25°C
4.5-A setting, immediate shut down when
sensed current reach this value
One-time overcurrent latch off on
IOCPH3A
(2)
4.49
5.1
5.61
A
the low-side FET
VVIN = 3.3 V, VOUT = 0.6 V with 1-µH inductor,
fSW = 1.1 MHz, TA= 25°C
6.5-A setting, when IOUT exceeds this threshold
for 4 consecutive cycles,
IOCPL5A
(2)
Overcurrent limit on high-side FET
6.1
6.8
7.5
A
VVIN = 3.3 V, VOUT = 1.5 V with 1-µH inductor,
fSW = 1.1 MHz, TA= 25°C
6.5-A setting, immediate shut down when
sensed current reach this value
One time overcurrent latch off on
IOCPH5A
(2)
6.75
7.50
8.30
A
the low-side FET
VVIN = 3.3 V, VOUT = 0.6 V with 1-µH inductor,
fSW = 1.1 MHz, TA= 25°C
thiccup
Hiccup time interval
fSW = 1.1 MHz
14.5
ms
Zero crossing comparator internal
VZXOFF
(1)
PGND
– SW, SKIP mode
–4.5
–3.0
–1.5
mV
offset
PROTECTION: OVP, UVP, PGD, AND INTERNAL THERMAL SHUTDOWN
Overvoltage protection threshold
VOVP
Measured at the FB w/r/t VREF
114%
117%
120%
voltage
Undervoltage protection Threshold
VUVP
Measured at the FB w/r/t VREF
80%
83%
86%
voltage
VPGDL
PGD low threshold
Measured at the FB w/r/t VREF
80%
83%
86%
VPGDU
PGD upper threshold
Measured at the FB w/r/t .VREF
114%
117%
120%
Minimum input voltage for valid
Measured at VIN with 1-mA sink current on PGD
VINMINPG
1
V
PGD at start-up
pin at start up
THSD(1)
Thermal shutdown
130
140
150
°C
Controller start again after temperature has
THSDHYS
(1)
Thermal shutdown hysteresis
40
°C
dropped
(1)
Ensured by design. Not production tested.
(2)
See Figure 5 and Figure 6 on OCP level for other operating conditions.
4
Copyright
© 2011, Texas Instruments Incorporated
Product Folder Link(s) :TPS53316


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