Typical operating characteristics (continued) – Rainbow Electronics MAX8884Z User Manual
Page 8
MAX8884Y/MAX8884Z
700mA DC-DC Step-Down Converters
with Dual 300mA LDO in 2mm x 2mm CSP
8
_______________________________________________________________________________________
REFBP SOFT-START
C
REFBP
= 0.15
μF
MAX8884Y/Z toc28
100
μs/div
V
LDO1_EN
V
REFBP
V
LDO1
1V/div
0V
2V/div
0V
1V/div
0V
REFBP SOFT-START
C
REFBP
= 0.033
μ
F
MAX8884Y/Z toc27
100
μ
s/div
V
LDO1_EN
V
REFBP
V
LDO1
1V/div
0V
2V/div
0V
0V
1V/div
LDO1, LDO2 STARTUP
AND SHUTDOWN RESPONSE
MAX8884Y/Z toc26
400
μs/div
V
LDO1
V
LDO1_EN
=
V
LDO2_EN
V
LDO2
2V/div
0V
2V/div
0V
2V/div
0V
LDO1, LDO2 LOAD TRANSIENT
RESPONSE NEAR DROPOUT
MAX8884Y/Z toc25
20
μs/div
I
LDO1
V
LDO2
I
LDO2
V
LDO1
AC-COUPLED
10mV/div
AC-COUPLED
10mV/div
50mA/div
50mA/div
1mA
1mA
40mA
1mA
1mA
40mA
V
IN2
= V
LDO2
+ 200mV
Typical Operating Characteristics (continued)
(V
IN
= V
IN1A
= V
IN1B
= V
IN2
= 3.6V, V
BUCK
= 1.2V, V
LDO1
= 1.8V, V
LDO2
= 2.8V, MAX8884YEVKIT, T
A
= +25°C, unless otherwise noted.)