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TPS54326RGTT Fiches technique(PDF) 4 Page - Texas Instruments

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No de pièce TPS54326RGTT
Description  4.5V to 18V Input, 3-A Synchronous Step-Down Converter with Eco-mode
Download  30 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS54326RGTT Fiches technique(HTML) 4 Page - Texas Instruments

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background image
VO
VFB
VREG5
SS
GND
PG
EN
VCC
VIN
VBST
SW2
SW1
PGND2
PGND1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
POWERPAD
TPS54326
SLVSA13E – OCTOBER 2009 – REVISED JUNE 2012
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range, VCC, VIN = 12V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ON-TIME TIMER CONTROL
tON
On time
VIN = 12 V, VO = 1.05 V
145
ns
tOFF(MIN)
Minimum off time
TA = 25°C, VFB = 0.7 V
260
310
ns
SOFT START
ISSC
SS charge current
VSS = 0 V
1.4
2
2.6
μA
ISSD
SS discharge current
VSS = 0.5 V
0.1
0.2
mA
POWER GOOD
VFB rising (good)
85
90
95
VTHPG
Threshold
%
VFB falling (fault)
85
IPG
Sink current
PG = 0.5 V
2.5
5
mA
OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION
VOVP
Output OVP trip threshold
OVP detect
115
120
125
%
tOVPDEL
Output OVP prop delay
5
μs
UVP detect
65
70
75
VUVP
Output UVP trip threshold
%
Hysteresis
10
tUVPDEL
Output UVP delay
0.25
ms
tUVPEN
Output UVP enable delay
Relative to soft-start time
x 1.7
UVLO
Wake up VREG5 voltage
3.55
3.8
4.05
UVLO
Threshold
V
Hysteresis VREG5 voltage
0.23
0.35
0.47
DEVICE INFORMATION
PWP PACKAGE
(TOP VIEW)
4
Copyright © 2009–2012, Texas Instruments Incorporated
Product Folder Link(s) :TPS54326


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