参数资料
型号: TPS54326RGTR
厂商: TEXAS INSTRUMENTS INC
元件分类: 稳压器
英文描述: 5.5 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PQCC16
封装: GREEN, PLASTIC, QFN-16
文件页数: 21/26页
文件大小: 911K
代理商: TPS54326RGTR
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
SLVSA13D
– OCTOBER 2009 – REVISED FEBRUARY 2011
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
2009–2011, Texas Instruments Incorporated
Product Folder Link(s) :TPS54326
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