EV2101DQ-00A – 1.6MHz, 800mA SYNCHRONOUS STEP-DOWN PLUS 200mA LDO
EVALUATION BOARD
TYPICAL PERFORMANCE CHARACTERISTICS
Enable Turn Off
Enable Turn On
V
V
I
= V
= 3.6V, V
= 1.8V,
= 1.2V, EN1 = EN2 = 3.6V
V
V
I
= V
= 3.6V, V
= 1.8V,
= 1.2V, EN1 = EN2 = 3.6V
IN1
IN2
OUT1
IN1
IN2
OUT1
OUT2
OUT2
= 0.3A, I
= 0.1A
= 0.3A, I
= 0.1A
LOAD1
LOAD2
LOAD1
LOAD2
with Resistive Load
with Resistive Load
V
EN
5V/div.
V
EN
2V/div.
PWROK
2V/div.
PWROK
5V/div.
V
OUT1
1V/div.
V
OUT1
V
OUT2
1V/div.
1V/div.
V
OUT2
1V/div.
Input Ramp Down
Input Ramp Up
V
V
I
= V
= 3.6V, V
= 1.8V,
= 1.2V, EN1 = EN2 = 3.6V
V
V
I
= V
= 3.6V, V
= 1.8V,
IN1
IN2
OUT1
IN1
IN2
= 1.2V, EN1 = EN2 = 3.6V
OUT1
OUT2
OUT2
=0.3A, I
= 0.1A
= 0.3A, I
= 0.1A
LOAD1
LOAD2
LOAD1
LOAD2
with Resistive Load
with Resistive Load
V
IN
2V/div.
V
IN
2V/div.
V
OUT1
2V/div.
V
OUT1
2V/div.
V
OUT2
1V/div.
V
OUT2
1V/div.
1ms/div.
1ms/div.
Load Transient of
Synchronous Buck
LDO Load Transient
V
I
= V
IN2
= 3.6V, V = 1.2V
OUT2
IN
V
I
= 3.6V, V
= 1.8V
= 0.02A to 0.15A
IN
OUT1
= 0.8A with Resistive Load
LOAD2
with Resistive Load
LOAD1
V
OUT1
V
OUT2
0.1V/div.
50mV/div.
I
I
L2
L1
0.1A/div.
0.5A/div.
EV2101DQ-00A Rev. 1.1
8/18/2006
www.MonolithicPower.com
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© 2006 MPS. All Rights Reserved.
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