Typical Performance Characteristics - Linear Technology Analog Devices LTM4622A Datasheet

TYPICAL PERFORMANCE CHARACTERISTICS

Efficiency vs Load Current
at 5V
IN
100
95
90
85
80
75
70
65
3.3V OUTPUT, 1MHz
1.5V OUTPUT, 1MHz
60
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2.0
LOAD CURRENT (A)
Burst Mode Efficiency,
12V , 1.5V
IN OUT
100
90
80
70
60
50
40
30
20
Burst Mode OPERATION
10
CMM
0
0.001 0.01 0.1
LOAD CURRENT (mA)
5V Output Transient Response
LOAD STEP
1A/DIV
V
OUT
AC-COUPLED
100mV/DIV
50µs/DIV
V = 12V, V = 5V, f
IN OUT SW
OUTPUT CAPACITOR = 47µF ×2 CERAMIC
10pF FEED-FORWARD CAPACITOR
LOAD-STEP = 1A TO 2A (10A/ s)
Efficiency vs Load Current
at 12V
100
95
90
85
80
75
70
65
60
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2.0
4622A G01
1.5V Output Transient Response
LOAD STEP
1A/DIV
V
OUT
AC-COUPLED
50mV/DIV
V
IN
OUTPUT CAPACITOR = 47µF ×1 CERAMIC
10pF FEED-FORWARD CAPACITOR
1 10
LOAD-STEP = 1A TO 2A (10A/ s)
4622A G04
8V Output Transient Response
LOAD STEP
1A/DIV
V
OUT
AC-COUPLED
100mV/DIV
4622A G07
V
= 1MHz
IN
OUTPUT CAPACITOR = 47µF ×2 CERAMIC
10pF FEED-FORWARD CAPACITOR
LOAD-STEP = 1A TO 2A (10A/ s)
For more information
IN
8V OUTPUT, 1.5MHz
5V OUTPUT, 1.5MHz
3.3V OUTPUT, 1MHz
1.5V OUTPUT, 1MHz
LOAD CURRENT (A)
4622A G02
50µs/DIV
4622A G05
= 12V, V = 1.5V, f = 1MHz
OUT SW
50µs/DIV
4622A G08
= 12V, V = 8V, f = 1.5MHz
OUT SW
www.analog.com
LTM4622A
Efficiency vs Load Current
at 16V
IN
100
95
90
85
80
75
12V OUTPUT, 1.5MHz
70
8V OUTPUT, 1.5MHz
5V OUTPUT, 1.5MHz
65
3.3V OUTPUT, 1MHz
1.5V OUTPUT, 1MHz
60
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2.0
LOAD CURRENT (A)
3.3V Output Transient Response
LOAD STEP
1A/DIV
V
OUT
AC-COUPLED
50mV/DIV
50µs/DIV
V = 12V, V = 3.3V, f
IN OUT SW
OUTPUT CAPACITOR = 47µF ×1 CERAMIC
10pF FEED-FORWARD CAPACITOR
LOAD-STEP = 1A TO 2A (10A/ s)
12V Output Transient Response
LOAD STEP
1A/DIV
V
OUT
AC-COUPLED
100mV/DIV
50µs/DIV
V = 16V, V = 12V, f
IN OUT SW
OUTPUT CAPACITOR = 47µF ×2 CERAMIC
10pF FEED-FORWARD CAPACITOR
LOAD-STEP = 1A TO 2A (10A/ s)
4622A G03
4622A G06
= 1MHz
4622A G09
= 1.5MHz
Rev B
5