Typical operating characteristics (continued) – Rainbow Electronics MAX8562 User Manual
Page 5
MAX8560/MAX8561/MAX8562
4MHz, 500mA Synchronous Step-Down
DC-DC Converters in SOT and TDFN
_______________________________________________________________________________________
5
HEAVY-LOAD SOFT-START WAVEFORMS
MAX8560 toc13
20
µs/div
I
L
200mA/div
I
IN
200mA/div
V
SHDN
2V/div
V
OUT
1V/div
0
3
Ω LOAD
LINE-TRANSIENT RESPONSE
MAX8560 toc14
2
µs/div
I
L
200mA/div
V
IN
500mV/div
V
OUT
20mV/div
0
5
Ω LOAD
V
IN
= 4.0V
V
IN
= 3.5V
LOAD TRANSIENT RESPONSE
MAX8560 toc15
2
µs/div
I
L
500mA/div
I
LOAD
500mA/div
V
OUT
50mV/div
0
20mA LOAD
500mA LOAD
20mA LOAD
OUTPUT-VOLTAGE TRANSIENT RESPONSE
(MAX8561)
MAX8560 toc16
40
µs/div
I
L
200mA/div
V
ODI
2V/div
V
OUT
500mV/div
0
7.5
Ω LOAD, L = 2.2µH
V
OUT
= 1.0V
V
OUT
= 1.5V
BYPASS-FET TRANSIENT RESPONSE
(MAX8562)
MAX8560 toc17
20
µs/div
I
L
500mA/div
V
ODI
2V/div
V
OUT
2V/div
0
0
7.5
Ω LOAD
V
OUT
= 1.2V
V
OUT
= V
IN
LIGHT-LOAD SOFT-START WAVEFORMS
MAX8560 toc12
20
µs/div
I
L
200mA/div
I
IN
200mA/div
V
SHDN
2V/div
V
OUT
1V/div
0
100
Ω LOAD
Typical Operating Characteristics (continued)
(V
IN
= 3.6V, V
OUT
= 1.2V, L = 1µH (LQH32C-IRO), C
OUT
= 2.2µF, T
A
= +25°C, unless otherwise noted.)