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TPS2500 数据表(PDF) 8 Page - Texas Instruments

部件名 TPS2500
功能描述  INTEGRATED USB POWER SWITCH WITH BOOST CONVERTER
PDF  43 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  TI2 [Texas Instruments]
网页  https://www.ti.com
标志 TI2 - Texas Instruments

TPS2500 数据表(HTML) 8 Page - Texas Instruments

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background image
Gate Drive
8- sOne-Shot
m
S
S
EN
EN
PWM
Comparator
HSD
PWM Latch
S
R
Q
INPUT
LSD
Iind
V
+ 5%
AUX
V
– 2%
AUX
PFM Latch
S
R
Q
I
4.5 A
SW
AUXHigh
Comparator
PFM Enter
Comparator
AUXLow
Comparator
IIND
420mA
LOW
Constant-Current
Start-up Comparator
V
– V
IN
AUX
V700mV
EXIT
+
+
+
+
+
+
+
+
+
–
–
V
IN
V
5.05V
NFM
+
–
–
–
–
–
–
–
–
–
+
Error
Amplifier
Slope
Compensation
Generator
I
6.7 A
UPPER
1-MHz/250-kHz
Oscillator
LowerCurrent-
LimitComparator
UpperCurrent-
LimitComparator
85%Max
DutyCycle
Generator
I
2.65 A
START
Constant-Current
Start-up Amplifier
B0352-01
V
IN
V
4.35V
LFM
V
V
V
IN
LFM
³
® 250kHz
<V
1MHz
IN
LFM ®
R
L
C
L
OUT
TestCircuit
10%
90%
10%
90%
V
OUT
t
on
t
off
10%
90%
50%
50%
V
EN
50%
50%
10%
90%
VoltageWaveforms
t
r
t
f
V
OUT
V
EN
V
OUT
t
on
t
off
S0395-01
TPS2500, TPS2501
SLVS886C – OCTOBER 2008 – REVISED AUGUST 2010
www.ti.com
Figure 1. Detail of Boost Control Circuitry
PARAMETER MEASUREMENT INFORMATION
Figure 2. Test Circuit and Voltage Waveforms
8
Submit Documentation Feedback
Copyright © 2008–2010, Texas Instruments Incorporated
Product Folder Link(s): TPS2500 TPS2501



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