Datasheet

LTM4620A
6
4620afb
For more information www.linear.com/LTM4620A
TYPICAL PERFORMANCE CHARACTERISTICS
12V to 1V Load Step Response
12V to 1.8V Load Step Response
12V to 1.2V Load Step Response
12V to 2.5V Load Step Response
12V to 1.5V Load Step Response
12V to 3.3V Load Step Response
Efficiency vs Output Current,
V
IN
= 8V
Efficiency vs Output Current,
V
IN
= 12V
Efficiency vs Output Current,
V
IN
= 5V
OUTPUT CURRENT (A)
1
70
EFFICIENCY (%)
75
80
85
90
100
2.4
3.8 5.2 6.6 8.0 9.4
4620A G01
10.8 12.2
95
5V TO 1V (400kHz)
5V TO 1.2V (400kHz)
5V TO 1.5V (400kHz)
5V TO 1.8V (500kHz)
5V TO 2.5V (500kHz)
5V TO 3.3V (500kHz)
20mV/DIV
50µs/DIV
C
FF
= 150pF
C
OUT
= 2 × 470µF 9mΩ EACH POSCAP
1 × 100µF CERAMIC
4620A G04
5A/DIV
6A/µs STEP
20mV/DIV
50µs/DIV
C
FF
= 150pF
C
OUT
= 2 × 470µF 9mΩ EACH POSCAP
1 × 100µF CERAMIC
4620A G05
5A/DIV
6A/µs STEP
50mV/DIV
50µs/DIV
C
FF
= 47pF
C
OUT
= 220µF 9mΩ POSCAP
100µF CERAMIC
4620A G06
5A/DIV
6A/µs STEP
50mV/DIV
50µs/DIV
C
FF
= 33pF
C
OUT
= 220µF 9mΩ POSCAP
100µF CERAMIC
4620A G07
5A/DIV
6A/µs STEP
50mV/DIV
50µs/DIV
C
FF
= 100pF
C
OUT
= 220µF 9mΩ POSCAP
100µF CERAMIC
4620A G08
5A/DIV
6A/µs STEP
100mV/DIV
50µs/DIV
C
FF
= 33pF
C
OUT
= 100µF 15mΩ POSCAP
100µF CERAMIC
4620A G09
5A/DIV
6A/µs STEP
OUTPUT CURRENT (A)
1
70
EFFICIENCY (%)
75
80
85
90
100
2.4
3.8 5.2 6.6 8.0 9.4
4620A G02
10.8 12.2
95
8V TO 1V (400kHz)
8V TO 1.2V (400kHz)
8V TO 1.5V (500kHz)
8V TO 1.8V (600kHz)
8V TO 2.5V (650kHz)
8V TO 3.3V (700kHz)
8V TO 5V (750kHz)
TIE 5V
OUT
TO EXTV
CC
OUTPUT CURRENT (A)
1
70
EFFICIENCY (%)
75
80
85
90
100
2.4
3.8 5.2 6.6 8.0 9.4
4620A G03
10.8 12.2
95
12V TO 1V (400kHz)
12V TO 1.2V (400kHz)
12V TO 1.5V (500kHz)
12V TO 1.8V (600kHz)
12V TO 2.5V (650kHz)
12V TO 3.3V (700kHz)
12V TO 5V (750kHz)
TIE 5V
OUT
TO EXTV
CC