參數(shù)資料
型號(hào): TPS54350MPWPREP
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: 7.2 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO16
封裝: GREEN, PLASTIC, HTSSOP-16
文件頁(yè)數(shù): 32/36頁(yè)
文件大小: 1057K
代理商: TPS54350MPWPREP
www.ti.com
TPS54350-EP
SGLS308 – OCTOBER 2005
ELECTRICAL CHARACTERISTICS (continued)
T
J = –55°C to 125°C, VIN = 4.5 V to 20 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ENABLE (ENA PIN)
Disable low level input voltage
0.5
V
fs = 250 kHz, RT = ground(1)
4.6
Internal slow-start time (10% to 90%)
ms
fs = 500 kHz, RT = Hi-Z(1)
2.3
Pullup current source
1.8
5
10
A
Pulldown MOSFET
II(ENA) = 1 mA
0.1
V
POWER GOOD (PWRGD PIN)
Power good threshold
Rising voltage
97%
fs = 250 kHz
4
Rising edge delay(1)
ms
fs = 500 kHz
2
Isink = 1 mA, VIN > 4.5 V
0.05
V
Output saturation voltage
PWRGD
Isink = 100 A, VIN = 0 V
0.76
V
Open drain leakage current
Voltage on PWRGD = 6 V
3
A
CURRENT LIMIT
Current limit
VIN = 12 V, TA = 25°C
3
4.5
7.2
A
Current limit Hiccup Time(2)
fs = 500 kHz
4.5
ms
THERMAL SHUTDOWN
Thermal shutdown trip point(2)
165
°C
Thermal shutdown hysteresis(2)
7
°C
LOW SIDE MOSFET DRIVER (LSG PIN)
Turn on rise time, (10% / 90%(2))
VIN = 4.5 V, Capacitive load = 1000 pF
15
ns
Deadtime(2)
VIN = 12 V
60
ns
VIN = 4.5 V sink/source
7.5
Driver ON resistance
VIN = 12 V sink/source
5
OUTPUT POWER MOSFETS (PH PIN)
Phase node voltage when disabled
DC conditions and no load, ENA = 0 V
0.5
V
VIN = 4.5 V, Idc = 100 mA
1.13
1.42
Voltage drop, low side FET and diode
V
VIN = 12 V, Idc = 100 mA
1.08
1.38
VIN = 4.5 V, BOOT-PH = 4.5 V,
150
300
IO = 0.5 A
rDS(ON)
High side power MOSFET switch(3)
m
VIN = 12 V, BOOT-PH = 8 V,
100
220
IO = 0.5 A
(2)
Ensured by design, not production tested.
(3)
Resistance from VIN to PH pins.
5
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