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參數資料
| 型號： | TPS51511RHLT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING CONTROLLER, 350 kHz SWITCHING FREQ-MAX, PQCC20 |
| 封裝： | ROHS COMPLIANT, PLASTIC, QFN-20 |
| 文件頁數： | 25/29頁 |
| 文件大小： | 1019K |
| 代理商： | TPS51511RHLT |
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SLVS735A – FEBRUARY 2007 – REVISED APRIL 2007
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range, V
V5IN = 5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
PROTECTION
VPGND-CS voltage, PGOOD = Hi,
50
60
70
VCS < 0.5 V
VOCL
Current limit threshold
mV
VPGND-CS voltage, PGOOD = Lo,
20
30
40
VCS < 0.5 V
VCS > 4.5 V, PGOOD = Hi, TA = 25°C
9
10
11
ITRIP
CS sink current
A
VRDS(ON)CS > 4.5 V, PGOOD = Lo, TA = 25°C
4
5
6
TRIP current temperature
sense scheme,
TCITRIP
4500
ppm/
°C
coefficient
On the basis of 25
°C
VOCLoff
OCP comp. offset
(VV5IN-CS– VPGND-LL) voltage, VV5IN-CS = 60 mV, VCS > 4.5 V
–10
0
10
mV
Current limit threshold setting
VRtrip
V5IN-CS voltage(4)
30
150
mV
range
POWERGOOD COMPARATOR
PG out from low end
87%
90%
93%
VTVoPG
VOSW PG Threshold
PG out from high end
107%
110%
113%
PG hysteresis
5%
IPGMAX
PG Sink Current
VLDO = 0 V, VPGOOD = 0.5 V
2.5
7.5
mA
TPGDEL
PGOOD Delay
Delay for PG in
80
130
200
s
VOSW threshold voltage for
turning on PGOOD up limit and
1.36
V
OVP feature
VVOSWTH
VOSW = 1.5 V
VOSW threshold hysteresis
voltage for turning on PGOOD up
10
mV
limit and OVP feature
UVLO/LOGIC THRESHOLD
Wake up
3.7
4.0
4.3
VUVV5IN
V5IN UVLO threshold
V
Hysteresis
0.15
0.225
0.3
VIH
High-level input voltage
ENLDO, ENSW
2.2
V
VIL
Low-level input voltage
ENLDO, ENSW
0.3
V
VIHYS
Hysteresis voltage
ENLDO, ENSW
0.2
V
IINLEAK
Logic input leakage current
ENLDO, ENSW
–1
1
A
Input Leakage/Bias Current
IINVSWFB
–1
1
A
VSWFB -1 1
PROTECTION: UVP AND OVP
VOVP
VOSW OVP trip threshold
OVP detect
110%
115%
120%
TOVPDEL
VOSW OVP prop delay
See (4)
1.5
s
VUVP
Output UVP trip threshold
UVP detect
70%
TUVPDEL
Output UVP prop delay
32
clks
TUVPEN
Output UVP enable delay
1007
clks
THERMAL SHUTDOWN
Shutdown temperature(4)
160
TSDN
Thermal SDN threshold
°C
Hysteresis(4)
10
(4)
Ensured by design. Not production tested.
5
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