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TPS54880PWPG4 Datasheet(PDF) 4 Page - Texas Instruments

Part # TPS54880PWPG4
Description  4-V TO 6-V INPUT, 8-A OUTPUT TRACKING SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS54880PWPG4 Datasheet(HTML) 4 Page - Texas Instruments

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TPS54880
SLVS450A − OCTOBER 2002 REVISED APRIL 2005
www.ti.com
4
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ERROR AMPLIFIER
Error amplifier open loop voltage gain
1 kΩ COMP to AGND(1)
90
110
dB
Error amplifier unity gain bandwidth
Parallel 10 kΩ, 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/µs
PWM COMPARATOR
PWM comparator propagation delay time,
PWM comparator input to PH pin (excluding
deadtime)
10-mV overdrive(1)
70
85
ns
ENABLE
Enable threshold voltage, ENA
0.82
1.20
1.40
V
Enable hysteresis voltage, ENA
0.03
V
Falling edge deglitch, ENA(1)
2.5
µs
Leakage current, ENA
VI = 5.5 V
1
µA
POWER GOOD
Power good threshold voltage
VSENSE falling
90
%Vref
Power good hysteresis voltage(1)
3
%Vref
Power good falling edge deglitch(1)
35
µs
Output saturation voltage, PWRGD
I(sink) = 2.5 mA
0.18
0.3
V
Leakage current, PWRGD
VI = 5.5 V
1
µA
CURRENT LIMIT
C
t li it t i
i t
VI = 4.5 V Output shorted(1)
9
1
A
Current limit trip point
VI = 6 V Output shorted(1)
10
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
mΩ
rDS(on)
Power MOSFET switches
VI = 4.5 V(4)
30
60
mΩ
TRACKIN
Input offset, TRACKIN
VSENSE = TRACKIN = 1.25 V
−1.5
1.5
mV
Input voltage range, TRACKIN
See Note 1
0
Vref
V
(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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