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LM3485EVAL датащи(PDF) 6 Page - Texas Instruments

номер детали LM3485EVAL
подробное описание детали  LM3485 Hysteretic PFET Buck Controller
Download  22 Pages
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI - Texas Instruments

LM3485EVAL датащи(HTML) 6 Page - Texas Instruments

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INPUT VOLTAGE (V)
L=10PH
L=15PH
L=22PH
Inductor Current
SW node
Voltage
Output Ripple Voltage
TIME (5Ps/div)
0A
0.5A
0V
5V
10V
0mV
20mV
-20mV
0A
0.5A
0V
5V
10V
0mV
20mV
-20mV
1A
Inductor Current
SW node Voltage
Output Ripple Voltage
TIME (2Ps/div)
(1A/div)
(2V/div)
lind@CADJ = 10nF
lind@CADJ = 1nF
VOUT@CADJ = 10nF
VOUT@CADJ = 1nF
(2V/div)
VIN (10V/div)
TIME (100Ps/div)
40
50
60
70
80
90
100
10
100
1000
10000
LOAD CURRENT (mA)
VIN = 12V
VIN = 24V
40
50
60
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80
90
100
LOAD CURRENT (mA)
10
100
1000
10000
VIN = 12V
VIN = 4.5V
VIN = 24V
LM3485
SNVS178F – MAY 2004 – REVISED SEPTEMBER 2009
www.ti.com
Typical Performance Characteristics (continued)
Unless otherwise specified, TJ = 25°C
Efficiency
Efficiency
vs
vs
Load Current
Load Current
(VOUT = 3.3V, L = 22µH)
(VOUT = 5.0V, L = 22µH)
Continuous Mode Operation
Start Up
(VIN = 12V, VOUT = 3.3 V, IOUT = 500mA, L = 22µH)
Operating Frequency
vs
Discontinuous Mode Operation
Input Voltage
(VIN = 12V, VOUT =3.3 V, IOUT = 50mA, L = 22µH)
(VOUT = 3.3V, IOUT = 1A, COUT(ESR) = 80mΩ, Cff = 100pF)
6
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Copyright © 2004–2009, Texas Instruments Incorporated
Product Folder Links: LM3485


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