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LTM4650-1 Datasheet(PDF) 5 Page - Linear Technology

No. de pieza LTM4650-1
Descripción Electrónicos  25A DC/DC Step-Down 關Module Regulator
PDF  34 Pages
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Fabricante Electrónico  LINER [Linear Technology]
Página de inicio  http://www.linear.com
Logo LINER - Linear Technology

LTM4650-1 Datasheet(HTML) 5 Page - Linear Technology

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LTM4645
5
4645f
For more information www.linear.com/LTM4645
Typical perForMance characTerisTics
0.9V Output Load Step Transient
Response
1V Output Load Step Transient
Response
1.2V Output Load Step Transient
Response
1.5V Output Load Step Transient
Response
Efficiency vs Output Current,
VIN = 5V
Efficiency vs Output Current,
VIN = 12V
CCM, Burst Mode and Pulse-
Skipping Mode Efficiency
VIN = 12V, VOUT = 1.2V, 750kHz
1.8V Output Load Step Transient
Response
LOAD CURRENT (A)
0
80
4645 G01
70
10
20
5
15
25
90
100
75
65
85
95
0.9VOUT 500kHz
1VOUT 600kHz
1.2VOUT 700kHz
1.5VOUT 800kHz
1.8VOUT 900kHz
LOAD CURRENT (A)
0
80
4645 G02
70
10
20
5
15
25
90
100
75
65
85
95
0.9VOUT 500kHz
1VOUT 600kHz
1.2VOUT 700kHz
1.5VOUT 800kHz
1.8VOUT 900kHz
LOAD CURRENT (A)
4645 G03
100
90
80
70
60
50
40
30
20
10
0
0.01
10
100
1
0.1
CCM
Burst Mode OPERATION
PULSE-SKIPPING MODE
50µs/DIV
4645 G04
VOUT
50mV/DIV
AC-
COUPLED
LOAD STEP
5A/DIV
VIN = 12V, VOUT = 0.9V, FS = 500kHz
COUT = 6 × 100µF CERAMIC
CFF = 33pF
0A TO 6.25A LOAD STEP, 10A/µs
50µs/DIV
4645 G05
VOUT
50mV/DIV
AC-
COUPLED
LOAD STEP
5A/DIV
VIN = 12V, VOUT = 1V, FS = 600kHz
COUT = 6 × 100µF CERAMIC
CFF = 33pF
0A TO 6.25A LOAD STEP, 10A/µs
50µs/DIV
4645 G06
VOUT
50mV/DIV
AC-
COUPLED
LOAD STEP
5A/DIV
VIN = 12V, VOUT = 1.2V, FS = 700kHz
COUT = 6 × 100µF CERAMIC
CFF = 33pF
0A TO 6.25A LOAD STEP, 10A/µs
50µs/DIV
4645 G07
VOUT
50mV/DIV
AC-
COUPLED
LOAD STEP
5A/DIV
VIN = 12V, VOUT = 1.5V, FS = 800kHz
COUT = 6 × 100µF CERAMIC
CFF = 33pF
0A TO 6.25A LOAD STEP, 10A/µs
50µs/DIV
4645 G08
VOUT
50mV/DIV
AC-
COUPLED
LOAD STEP
5A/DIV
VIN = 12V, VOUT = 1.8V, FS = 900kHz
COUT = 6 × 100µF CERAMIC
CFF = 33pF
0A TO 6.25A LOAD STEP, 10A/µs



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