Typical operating characteristics (continued) – Rainbow Electronics MAX8884Z User Manual
Page 7
MAX8884Y/MAX8884Z
700mA DC-DC Step-Down Converters
with Dual 300mA LDO in 2mm x 2mm CSP
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7
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7
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.)
LDO1, LDO2 LOAD TRANSIENT RESPONSE
MAX8884Y/Z toc24
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
1mA
1mA
40mA
40mA
LDO1, LDO2 LINE TRANSIENT
MAX8884Y/Z toc23
10
μs/div
V
LDO1
V
IN
V
LDO2
AC-COUPLED
5mV/div
AC-COUPLED
5mV/div
1V/div
I
LDO1
= I
LDO2
= 100mA
4V
4V
3.5V
LDO OUTPUT-NOISE SPECTRAL DENSITY
vs. FREQUENCY, V
LDO_
= 2.8V
MAX884Y/Z toc22
FREQUENCY (kHz)
100
10
1
0.1
100
1000
10,000
10
0.01
1000
I
LDO_
= 30mA
NOISE DENSITY (nV
√
(Hz))
LDO OUTPUT-NOISE SPECTRAL DENSITY
vs. FREQUENCY, V
LDO_
= 1.8V
MAX884Y/Z toc21
FREQUENCY (kHz)
NOISE DENSITY (nV
√
(Hz))
100
10
1
0.1
100
1000
10,000
10
0.01
1000
I
LDO_
= 30mA