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TPS54824RNVT Datasheet(PDF) 5 Page - Texas Instruments

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Part # TPS54824RNVT
Description  4.5-V to 17-V Input, Current Mode, 8-A Synchronous SWIFT Step-Down Converter
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS54824RNVT Datasheet(HTML) 5 Page - Texas Instruments

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5
TPS54824
www.ti.com
SLVSDC9 – NOVEMBER 2016
Product Folder Links: TPS54824
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
6.5 Electrical Characteristics
TJ = -40°C to 150°C, VIN = 4.5 V to 17 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
INPUT VOLTAGE
UVLO_rise
VIN under-voltage lockout
V(VIN) rising
4.1
4.3
V
UVLO_fall
V(VIN) falling
3.7
3.9
V
UVLO_hys
Hysteresis VIN voltage
0.2
V
Ivin
Operating non-switching supply current
V(EN) = 5 V, V(FB) = 1.5 V
580
800
µA
Ivin_sdn
Shutdown supply current
V(EN) = 0 V
3
11
µA
ENABLE
Ven_rise
EN threshold
V(EN) rising
1.20
1.26
V
Ven_fall
V(EN) falling
1.1
1.15
V
Ven_hys
EN pin threshold voltage hysteresis
50
mV
Ip
EN pin sourcing current
V(EN) = 1.1V
1.2
µA
Iph
EN pin sourcing current
V(EN) = 1.3V
4.8
µA
Ih
EN pin hysteresis current
3.6
µA
FB
VFB
Regulated FB voltage
TJ = 25°C
596
600
604
mV
595
600
605
mV
ERROR AMPLIFIER
gmea
Error Amplifier Transconductance (gm)
–2 µA < I(COMP) < 2 µA, V(COMP) = 1 V
1100
µA/V
Error Amplifier DC gain
80
dB
Icomp_src
Error Amplifier source current
V(FB) = 0 V
100
µA
Icomp_snk
Error Amplifier sink current
V(FB) = 2 V
-100
µA
gmps
Power Stage Transconductance
16
A/V
SOFT-START
Iss
Soft-start current
5
µA
V(SS/TRK) to V(FB) matching
V(SS/TRK) = 0.4 V
25
mV
MOSFET
Rds(on)_h
High-side switch resistance
TA = 25°C, V(VIN) = 12 V
14.1
TA = 25°C, V(VIN) = 4.5 V, V(BOOT-SW) = 4.5 V
15.9
Rds(on)_l
Low-side switch resistance
TA = 25°C, V(VIN) = 12 V
6.1
TA = 25°C, V(VIN) = 4.5 V
6.9
BOOT UVLO Falling
2.2
2.6
V
CURRENT LIMIT
Ioc_HS_pk
High-side peak current limit
10.8
12.9
15
A
Ioc_LS_snk
Low-side sinking current limit
–3.4
A
Ioc_LS_src
Low-side sourcing current limit
9.3
11.4
13.6
A
RT/CLK
VIH
Logic high input voltage
2
V
VIL
Logic low input voltage
0.8
V
PGOOD
Power good threshold
V(FB) rising (fault)
108%
V(FB) falling (good)
106%
V(FB) rising (good)
91%
V(FB) falling (fault)
89%
Ipg_lkg
Leakage current when pulled high
V(PGOOD) = 5 V
5
nA
Vpg_low
PGOOD voltage when pulled low
I(PGOOD) = 2 mA
0.3
V
Minimum VIN for valid output
V(PGOOD) < 0.5 V, I(PGOOD) = 4 mA
0.7
1
V
Thermal protection
TTRIP
Thermal protection trip point
Temperature Rising
170
°C
THYST
Thermal protection hysteresis
15
°C


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