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TPS54361 Datasheet(PDF) 5 Page - Texas Instruments

No. de pieza TPS54361
Descripción Electrónicos  4.5-V to 60-V Input, 3.5-A, Step-Down DC-DC Converter
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS54361 Datasheet(HTML) 5 Page - Texas Instruments

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TPS54361
www.ti.com
SLVSC39C – NOVEMBER 2013 – REVISED FEBRUARY 2016
Product Folder Links: TPS54361
Submit Documentation Feedback
Copyright © 2013–2016, Texas Instruments Incorporated
(1)
Open Loop current limit measured directly at the SW pin and is independent of the inductor value and slope compensation.
6.5
Electrical Characteristics
TJ = –40°C to 150°C, VIN = 4.5 V to 60 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY VOLTAGE (VIN PIN)
Operating input voltage
4.5
60
V
Internal undervoltage lockout
threshold
Rising
4.1
4.3
4.48
V
Internal undervoltage lockout
threshold hysteresis
325
mV
Shutdown supply current
EN = 0 V, 25°C, 4.5 V
≤ VIN ≤ 60 V
2.25
4.5
μA
Operating: nonswitching supply
current
FB = 0.9 V, TA = 25°C
152
200
μA
ENABLE AND UVLO (EN PIN)
Enable threshold voltage
No voltage hysteresis, rising and falling
1.1
1.2
1.3
V
Input current
Enable threshold +50 mV
–4.6
μA
Enable threshold –50 mV
–0.58
–1.2
–1.8
Hysteresis current
–2.2
–3.4
–4.5
μA
VOLTAGE REFERENCE
Voltage reference
0.792
0.8
0.808
V
HIGH-SIDE MOSFET
ON-resistance
VIN = 12 V, BOOT-SW = 6 V
89
190
m
Ω
ERROR AMPLIFIER
Input current
50
nA
Error amplifier transconductance
(gm)
–2
μA < ICOMP < 2 μA, VCOMP = 1 V
350
μS
Error amplifier transconductance
(gm) during soft start
–2
μA < ICOMP < 2 μA, VCOMP = 1 V, VFB = 0.4 V
77
μS
Error amplifier DC gain
VFB = 0.8 V
10 000
V/V
Min unity gain bandwidth
2500
kHz
Error amplifier source/sink
V(COMP) = 1 V, 100-mV overdrive
±30
μA
COMP to SW current
transconductance
12
A/V
CURRENT LIMIT
Current limit threshold
All VIN and temperatures, open loop(1)
4.5
5.5
6.8
A
All temperatures, VIN = 12 V, open loop (1)
4.5
5.5
6.3
VIN = 12 V, TA = 25°C, open loop
(1)
5.2
5.5
5.9
THERMAL SHUTDOWN
Thermal shutdown
176
°C
Thermal shutdown hysteresis
12
°C
TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK PIN)
RT/CLK high threshold
1.55
2
V
RT/CLK low threshold
0.5
1.2
V


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