Linear Technology Analog Devices LTM4622A Datasheet page 6

LTM4622A
TYPICAL PERFORMANCE CHARACTERISTICS
Start-Up with No Load
Current Applied
V
OUT
2V/DIV
RUN
10V/DIV
I
IN
1A/DIV
10ms/DIV
V = 12V, V = 3.3V, f = 1MHz
IN OUT SW
OUTPUT CAPACITOR = 10µF CERAMIC
+ 47µF POSCAP
SOFT-START CAP = 0.1µF
Short-Circuit with 2A Load
Current Applied
V
OUT
2V/DIV
I
IN
1A/DIV
20µs/DIV
V = 12V, V = 3.3V, f = 1MHz
IN OUT SW
OUTPUT CAPACITOR = 10µF + 47µF POSCAP
6
Start-Up with 2A Load
Current Applied
V
OUT
2V/DIV
RUN
10V/DIV
I
IN
0.5A/DIV
4622A G10
V = 12V, V
IN OUT
OUTPUT CAPACITOR = 10µF CERAMIC
+ 47µF POSCAP
SOFT-START CAP = 0.1µF
Recover from Short-Circuit with
No Load Current Applied
V
OUT
2V/DIV
I
IN
1A/DIV
4622A G13
V = 12V, V = 3.3V, f
IN OUT
OUTPUT CAPACITOR = 10µF + 47µF POSCAP
For more information
10ms/DIV
4622A G11
= 3.3V, f = 1MHz
SW
AC-COUPLED
10mV/DIV
20µs/DIV
4622A G14
= 1MHz
SW
www.analog.com
Short-Circuit with No Load
Current Applied
V
OUT
2V/DIV
I
IN
1A/DIV
20µs/DIV
V = 12V, V = 3.3V, f = 1MHz
IN OUT SW
OUTPUT CAPACITOR = 10µF CERAMIC
+ 47µF POSCAP
Steady-State Output Voltage Ripple
V
OUT
20µs/DIV
V = 12V, V = 3.3V, f = 1MHz
IN OUT SW
OUTPUT CAPACITOR = 10µF + 47µF POSCAP
4622A G12
4622A G15
Rev B