ltm4619 Linear Technology Corporation, ltm4619 Datasheet - Page 5

• Manufacturer Part Number: ltm4619
• Description: Dual, 26vin, 4a Dc/dc ?module Regulator
• Manufacturer: Linear Technology Corporation

50mV/DIV
TYPICAL PERFORMANCE CHARACTERISTICS
50mV/DIV
1A/DIV
1A/DIV
V
V
I
I
OUT
OUT
OUT
OUT
6V
f = 780kHz
C
C
1.2V Output Transient Response
6V
f = 780kHz
C
C
3.3V Output Transient Response
OUT
OUT
OUT
OUT
IN
IN
1.2V
3.3V
2 22μF, 6.3V X5R CERAMIC
1 330μF, 6.3V SANYO POSCAP
2 22μF, 6.3V X5R CERAMIC
1 330μF, 6.3V SANYO POSCAP
OUT
OUT
0.5A/DIV
AT 2A/μs LOAD STEP
AT 2A/μs LOAD STEP
1V/DIV
V
OUT
100μs/DIV
100μs/DIV
I
IN
V
C
AND 1 100μF 6.3V CERAMIC CAPs
Short Circuit, I
IN
OUT
= 12V, V
= 2 22μF 10V,
OUT
= 2.5V, I
50μs/DIV
4619 G07
4619 G04
OUT
OUT
= 0A
50mV/DIV
= 0A
0.5A/DIV
1A/DIV
1V/DIV
V
I
OUT
OUT
V
I
IN
IN
6V
f = 780kHz
C
C
1.5V Output Transient Response
Start-Up, I
V
C
AND 1 100μF 6.3V CERAMIC CAPs
C
USE RUN PIN TO CONTROL START-UP
OUT
OUT
IN
OUT
SOFTSTART
4619 G10
IN
= 12V, V
1.5V
2 22μF, 6.3V X5R CERAMIC
1 330μF, 6.3V SANYO POSCAP
= 2 22μF 10V
OUT
OUT
= 0.1μF
AT 2A/μs LOAD STEP
OUT
= 2.5V, I
100μs/DIV
20ms/DIV
= 0A
0.5A/DIV
1V/DIV
OUT
V
OUT
I
= 0A
IN
V
C
AND 1 100μF 6.3V CERAMIC CAPs
Short Circuit, I
IN
OUT
= 12V, V
= 2 22μF 10V,
(Refer to Figures 18 and 19)
4619 G05
4619 G08
OUT
= 2.5V, I
50μs/DIV
50mV/DIV
OUT
0.5A/DIV
1A/DIV
1V/DIV
V
OUT
I
OUT
OUT
= 4A
V
I
IN
IN
= 4A
6V
f = 780kHz
C
C
Start-Up, I
V
I
C
AND 1 100μF 6.3V CERAMIC CAPs
C
USE RUN PIN TO CONTROL START-UP
2.5V Output Transient Response
OUT
OUT
OUT
IN
OUT
SOFTSTART
IN
= 12V, V
2.5V
= 4A RESISTIVE LOAD
2 22μF, 6.3V X5R CERAMIC
1 330μF, 6.3V SANYO POSCAP
= 2 22μF 10V,
OUT
4619 G11
OUT
= 0.1μF
AT 2A/μs LOAD STEP
OUT
= 2.5V,
100μs/DIV
20ms/DIV
= 4A
LTM4619
4619 G06
4619 G09
5
4619f