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| 型号： | TPS54617RUVT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, 660 kHz SWITCHING FREQ-MAX, QCC34 |
| 封装： | 3.50 X 7 MM, GREEN, VQFN-34 |
| 文件页数： | 16/21页 |
| 文件大小： | 852K |
| 代理商： | TPS54617RUVT |
SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009 ........................................................................................................................................... www.ti.com
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(3)
90
110
dB
Error amplifier unity gain bandwidth
Parallel 10 k
, 160 pF COMP to AGND(3)
3
5
MHz
Error amplifier common-mode input
0
VBIAS
V
Powered by internal LDO(3)
voltage range
IIB
Input bias current, VSENSE
VSENSE = Vref
60
250
nA
Output voltage slew rate (symmetric),
1
1.4
V/s
VO
COMP(3)
PWM COMPARATOR
PWM comparator propagation delay
time, PWM comparator input to PH pin
10 mV overdrive(3)
70
85
ns
(excluding dead time)
SLOW-START/ENABLE
Enable threshold voltage, SS/ENA
0.82
1.20
1.40
V
Enable hysteresis voltage, SS/ENA(1)
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
1.5
2.3
4
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
VI = 3 V
(1), Output shorted
7.2
10
Current limit trip point
A
VI = 6 V
(1), Output shorted
10
12
Current limit leading edge blanking
100
ns
time(3)
Current limit total response time(3)
200
ns
THERMAL SHUTDOWN
Thermal shutdown trip point(1)
135
150
165
°C
Thermal shutdown hysteresis(1)
10
°C
OUTPUT POWER MOSFETS
VI = 3 V
26
47
rDS(on) Power MOSFET switches
m
VI = 3.6 V
36
65
(3)
Specified by design
4
Copyright 2008–2009, Texas Instruments Incorporated
Product Folder Link(s) :TPS54617
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