参数资料
型号: TPS54429ERSAT
厂商: TEXAS INSTRUMENTS INC
元件分类: 稳压器
英文描述: 0.01 A SWITCHING REGULATOR, PQCC16
封装: PLASTIC, QFN-16
文件页数: 21/26页
文件大小: 907K
代理商: TPS54429ERSAT
SLVSAS0 –FEBRUARY 2011
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range, VIN = 12V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
CURRENT LIMIT
Iocl
Current limit
LOUT = 1.5 μH(2), TA = -20 C to 85 C
5.2
5.9
8.0
A
THERMAL SHUTDOWN
Shutdown temperature (2)
165
TSDN
Thermal shutdown threshold
°
C
Hysteresis (2)
30
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
2.0
2.6
μ
A
ISSD
SS discharge current
VSS = 0.5 V
0.1
0.2
mA
POWER GOOD
VFB rising (good)
85
90
95
%
VTHPG
PG threshold
VFB falling (fault)
85
%
IPG
PG 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
10
μ
s
UVP detect
60
65
70
%
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
3.5
3.8
4.1
VUVLO
UVLO threshold
V
Hysteresis VREG5 voltage
0.23
0.35
0.47
(2) Not production tested.
4
2011, Texas Instruments Incorporated
Product Folder Link(s) :TPS54429E
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