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| 型號(hào)： | TPS54873PWPG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | GREEN, PLASTIC, HTSSOP-28 |
| 文件頁(yè)數(shù)： | 17/22頁(yè) |
| 文件大小： | 605K |
| 代理商： | TPS54873PWPG4 |
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TPS54873
SLVS444A OCTOBER 2002 REVISED FEBRUARY 2005
www.ti.com
4
ELECTRICAL CHARACTERISTICS (continued)
TJ = 40°C to 125°C, VI = 3 V to 6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ERROR AMPLIFIER
Error amplifier open loop voltage gain
1 k COMP to AGND(1)
90
110
dB
Error amplifier unity gain bandwidth
Parallel 10 k, 160 pF COMP to AGND(1)
3
5
MHz
Error amplifier common mode input voltage range
Powered by internal LDO(1)
0
VBIAS
V
Input bias current, VSENSE
VSENSE = Vref
60
250
nA
Output voltage slew rate (symmetric), COMP
1.0
1.4
V/s
PWM COMPARATOR
PWM comparator propagation delay time,
PWM comparator input to PH pin (excluding
deadtime)
10-mV overdrive(1)
70
85
ns
SLOW-START/ENABLE
Enable threshold voltage, SS/ENA
0.82
1.20
1.40
V
Enable hysteresis voltage, SS/ENA
0.03
V
Falling edge deglitch, SS/ENA(1)
2.5
s
Internal slow-start time
2.6
3.35
4.1
ms
Charge current, SS/ENA
SS/ENA = 0 V
3
5
8
A
Discharge current, SS/ENA
SS/ENA = 1.3 V, VI = 1.5 V
2.0
2.3
4.0
mA
POWER GOOD
Power good threshold voltage
VSENSE falling
90
%Vref
Power good hysteresis voltage(1)
3
%Vref
Power good falling edge deglitch(1)
35
s
Output saturation voltage, PWRGD
I(sink) = 2.5 mA
0.18
0.3
V
Leakage current, PWRGD
VI = 5.5 V
1
A
CURRENT LIMIT
Current limit trip point
VI = 4.5 V Output shorted(1)
9
10
A
Current limit trip point
VI = 6 V Output shorted(1)
11
12
A
Current limit leading edge blanking time
100
ns
Current limit total response time
200
ns
THERMAL SHUTDOWN
Thermal shutdown trip point(1)
135
150
165
°C
Thermal shutdown hysteresis(1)
10
°C
OUTPUT POWER MOSFETS
r
Power MOSFET switches
VI = 6 V(4)
26
47
m
rDS(on)
Power MOSFET switches
VI = 4.5 V(4)
30
60
m
(1) Specified by design
(2) Static resistive loads only
(3) Specified by the circuit used in Figure 9
(4) Matched MOSFETs low-side rDS(on) production tested, high-side rDS(on) specified by design
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| TPS54873PWPR | 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 5V Inp 8A Sync Buck Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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| TPS54880PWP | 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 5V Inp 8A Sync Buck Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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