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905-5462001 Fiches technique(PDF) 6 Page - Texas Instruments

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No de pièce 905-5462001
Description  4.5-V to 17-V Input, 6-A Synchronous Step Down SWIFT Converter
Download  46 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

905-5462001 Fiches technique(HTML) 6 Page - Texas Instruments

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TPS54620
SLVS949E – MAY 2009 – REVISED JULY 2016
www.ti.com
Product Folder Links: TPS54620
Submit Documentation Feedback
Copyright © 2009–2016, Texas Instruments Incorporated
(1)
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953b.
7.4 Thermal Information
THERMAL METRIC(1)
RGY
RHY
UNIT
14 PINS
14 PINS
RθJA
Junction-to-ambient thermal resistance
36.9
43.4
°C/W
RθJCtop
Junction-to-case (top) thermal resistance
48.7
45.7
°C/W
RθJB
Junction-to-board thermal resistance
13.9
20.0
°C/W
ψJT
Junction-to-top characterization parameter
0.6
0.7
°C/W
ψJB
Junction-to-board characterization parameter
14.2
20.0
°C/W
RθJCbot
Junction-to-case (bottom) thermal resistance
3.1
2.6
°C/W
(1)
Measured at pins
7.5 Electrical Characteristics
TJ = –40°C to 150°C, VIN = 4.5V to 17V, PVIN = 1.6V to 17V (unless otherwise noted)
DESCRIPTION
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY VOLTAGE (VIN AND PVIN PINS)
PVIN operating input voltage
1.6
17
V
VIN operating input voltage
4.5
17
V
VIN internal UVLO threshold
VIN rising
4.0
4.5
V
VIN internal UVLO hysteresis
150
mV
VIN shutdown supply Current
EN = 0 V
2
5
μA
VIN operating – non switching supply current
VSENSE = 810 mV
600
800
μA
ENABLE AND UVLO (EN PIN)
Enable threshold
Rising
1.21
1.26
V
Enable threshold
Falling
1.10
1.17
V
Input current
EN = 1.1 V
1.15
μA
Hysteresis current
EN = 1.3 V
3.4
μA
VOLTAGE REFERENCE
Voltage reference
0 A
≤ IOUT ≤ 6 A
0.792
0.800
0.808
V
MOSFET
High-side switch resistance
BOOT-PH = 3 V
32
60
m
High-side switch resistance(1)
BOOT-PH = 6 V
26
40
m
Low-side Switch Resistance(1)
VIN = 12 V
19
30
m
ERROR AMPLIFIER
Error amplifier Transconductance (gm)
–2 μA < ICOMP < 2 μA, V(COMP) = 1 V
1300
μMhos
Error amplifier dc gain
VSENSE = 0.8 V
1000
3100
V/V
Error amplifier source/sink
V(COMP) = 1 V, 100 mV input overdrive
±110
μA
Start switching threshold
0.25
V
COMP to Iswitch gm
16
A/V
CURRENT LIMIT
High-side switch current limit threshold
8
11
A
Low-side switch sourcing current limit
7
10
A
Low-side switch sinking current limit
2.3
A


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