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LTM4644 Datasheet(PDF) 5 Page - Linear Technology

Part # LTM4644
Description  Triple Output 5A/5A/4A Step-Down DC/DC 關Module짰 Regulator
PDF  32 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTM4644 Datasheet(HTML) 5 Page - Linear Technology

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LTM4634
5
4634f
For more information www.linear.com/LTM4634
Typical perForMance characTerisTics
24V Input Efficiency (Ch1 and Ch2)
12V Input Efficiency (Ch3)
24V Input Efficiency (Ch3)
24V Input Continuous, Pulse-
Skipping and Burst Mode Operation
5V Input Efficiency (Ch1 and Ch2)
5V Input Efficiency (Ch3)
12V Input Efficiency (Ch1 and Ch2)
LOAD CURRENT (A)
0
70
80
90
100
4.0
4634 G07
60
50
65
75
85
95
55
45
40
1.0
2.0
3.0
0.5
4.5
1.5
2.5
3.5
5.0
5.0VOUT (750kHz) BURST
5.0VOUT (750kHz) PULSE
5.0VOUT (750kHz) CONT
24V to 5V Load Step Response
24V to 3.3V Load Step Response
OUTPUT
100mV/DIV
LOAD
STEP
1A/DIV
100µs/DIV
4634 G08
0A TO 2.5A, 2.5A/µs LOAD STEP
COUT = 2 × 100µF CERAMIC CAPACITOR
OUTPUT
100mV/DIV
LOAD
STEP
1A/DIV
100µs/DIV
4634 G09
0A TO 2.5A, 2.5A/µs LOAD STEP
COUT = 2 × 100µF CERAMIC CAPACITOR
LOAD CURRENT (A)
0
70
80
90
100
4.0
4634 G01
60
50
65
75
85
95
55
45
40
1.0
2.0
3.0
0.5
4.5
1.5
2.5
3.5
5.0
5V TO 1.0V EFF (250kHz)
5V TO 1.2V EFF (250kHz)
5V TO 1.5V EFF (250kHz)
5V TO 1.8V EFF (250kHz)
5V TO 2.5V EFF (250kHz)
5V TO 3.3V EFF (250kHz)
LOAD CURRENT (A)
0
70
85
90
4.0
4634 G02
65
60
40
1.0
2.0
3.0
0.5
1.5
2.5
3.5
50
100
95
80
75
55
45
5V TO 1.OV EFF (250kHz)
5V TO 1.2V EFF (250kHz)
5V TO 1.5V EFF (250kHz)
5V TO 1.8V EFF (250kHz)
5V TO 2.5V EFF (250kHz)
5V TO 3.3V EFF (250kHz)
LOAD CURRENT (A)
0
70
80
90
100
4.0
4634 G03
60
50
65
75
85
95
55
45
40
1.0
2.0
3.0
0.5
4.5
1.5
2.5
3.5
5.0
VEXTVCC = 5V
12V TO 1.0V EFF (250kHz)
12V TO 1.2V EFF (250kHz)
12V TO 1.5V EFF (250kHz)
12V TO 1.8V EFF (250kHz)
12V TO 2.5V EFF (250kHz)
12V TO 3.3V EFF (250kHz)
12V TO 5.0V EFF (250kHz)
LOAD CURRENT (A)
0
70
85
90
4.0
4634 G04
65
60
40
1.0
2.0
3.0
0.5
1.5
2.5
3.5
50
100
95
80
75
55
45
VEXTVCC = 5V
12V TO 1.0V EFF (250kHz)
12V TO 1.2V EFF (250kHz)
12V TO 1.5V EFF (250kHz)
12V TO 1.8V EFF (250kHz)
12V TO 2.5V EFF (250kHz)
12V TO 3.3V EFF (250kHz)
12V TO 5.0V EFF (250kHz)
LOAD CURRENT (A)
0
70
80
90
100
4.0
4634 G05
60
50
65
75
85
95
55
45
40
1.0
2.0
3.0
0.5
4.5
1.5
2.5
3.5
5.0
VEXTVCC = 5V
24V TO 1.0V EFF (250kHz)
24V TO 1.2V EFF (250kHz)
24V TO 1.5V EFF (300kHz)
24V TO 1.8V EFF (350kHz)
24V TO 2.5V EFF (350kHz)
24V TO 3.3V EFF (600kHz)
24V TO 5.0V EFF (750kHz)
LOAD CURRENT (A)
0
70
85
90
4.0
4634 G06
65
60
40
1.0
2.0
3.0
0.5
1.5
2.5
3.5
50
100
95
80
75
55
45
VEXTVCC = 5V
24 TO 1.0V EFF (250kHz)
24 TO 1.2V EFF (250kHz)
24 TO 1.5V EFF (250kHz)
24 TO 1.8V EFF (300kHz)
24 TO 2.5V EFF (300kHz)
24 TO 3.3V EFF (350kHz)
24 TO 5.0V EFF (500kHz)
24 TO 12V EFF (750kHz)



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