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參數資料
型號: TPS51315RGFT
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩壓器
英文描述: SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PQCC40
封裝: GREEN, PLASTIC, QFN-40
文件頁數: 28/32頁
文件大?。?/td> 1028K
代理商: TPS51315RGFT
SLUS881A
– MAY 2009 – REVISED MAY 2011
ELECTRICAL CHARACTERISTICS (continued)
over recommended free-air temperature range (unless otherwise noted)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
POWERGOOD COMPARATOR
PG in from lower (PGOOD goes high),
92.5%
95%
97.5%
TA = 25°C
PG Low hysteresis (PGOOD goes low)
–4.5%
–5.5%
–6.5%
VTH(PG)
Powergood threshold
PG in from higher (PGOOD goes high),
102.5%
105%
107.5%
TA = 25°C
PG High hysteresis (PGOOD goes low)
4.5%
5.5%
6.5%
IPG(max)
Powergood sink current
VPGOOD = 0.5 V
2.5
7.5
mA
TPGDEL
PGOOD delay
Delay for PGOOD in
64
μs
UVLO / LOGIC THRESHOLD
Wake up (UVLO out)
3.4
3.7
3.9
V
VUVLO
V5FILT UVLO threshold
Hysteresis
200
300
400
mV
SKIP mode enabled
3.3V
VEN_PSV
EN_PSV connection
PWM-Only mode enabled
FLOAT
EN_PSV low
0.7
1
1.3
V
Hysteresis
130
160
220
mV
VEN_PSV
EN_PSV logic input voltage
EN_PSV float
1.70
1.95
2.25
V
EN_PSV high
2.2
2.5
2.9
V
Hysteresis
100
170
250
mV
PROTECTION: OVERVOLTAGE (OVP) AND UNDERVOLTAGE (UVP)
OVP detect
110%
115%
120%
VOVP
VFB OVP trip threshold
Hysteresis
5%
UVP detect
65%
70%
75%
VUVP
VFB UVP trip threshold
Hysteresis
10%
TUVPDEL
VFB UVP delay
32
μs
TUVPEN
Output UVP enable delay
2
ms
THERMAL SHUTDOWN
Shutdown temperature(3)
145
160
175
°C
TSDN
Thermal SDN threshold
Hysteresis(3)
10
12
14
°C
INTEGRATED MOSFET
RDS(on)upper
Upper MOSFET RDS(on)
See (3)
19
m
RDS(on)lower
Lower MOSFET RDS(on)
See (3)
7
m
(3)
Ensured by design. Not production tested.
Copyright
2009–2011, Texas Instruments Incorporated
5
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