LQH4C100K04 MPS [Monolithic Power Systems], LQH4C100K04 Datasheet - Page 6

• Manufacturer Part Number: LQH4C100K04
• Description: 1.6MHz Synchronous Step-Down plus 200mA LDO
• Manufacturer: MPS [Monolithic Power Systems]

TYPICAL PERFORMANCE CHARACTERISTICS
V
T
MP2101 Rev. 1.0
8/18/2006
A
IN
= +25°C, unless otherwise noted.
0.1V/div.
0.5A/div.
PWROK
= 3.6V, V
2V/div.
2V/div.
1V/div.
2V/div.
1V/div.
1V/div.
V
V
V
V
V
OUT1
OUT2
OUT1
OUT2
OUT1
V
IN
I
L
Input Ramp Up
EN = 4V, I
I
PWROK Off vs
V
EN = 4V, I
I
Switcher Load Transient
I
OUT2
OUT2
OUT1
OUT1
OUT1
TM
= 0.8A Resistive Load
= 0.1A Resistive Load
= 0.1A Resistive Load
Shorted
OUT1
OUT1
= 1.8V, V
= 0.3A,
= 0.3A,
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
OUT2
= 1.2V, C
MP2101 – 1.6MHz SYNCHRONOUS STEP-DOWN PLUS 200mA LDO
50mV/div.
0.1A/div.
PWROK
2V/div.
1V/div.
1V/div.
2V/div.
1V/div.
1V/div.
V
V
V
V
V
I
OUT1
OUT2
OUT1
OUT2
OUT2
OUT2
© 2006 MPS. All Rights Reserved.
V
IN
IN1
www.MonolithicPower.com
Input Ramp Down
EN = 4V, I
I
PWROK Off vs
V
EN = 4V, I
I
LDO Load Transients
V
I
OUT2
OUT2
OUT2
= 4.7 µF, C
IN2
OUT2
= 3.3V, V
= 0.02A to 0.15A Resistive Load
= 0.1A Resistive Load
= 0.1A Resistive Load
Shorted
OUT1
OUT1
1ms/div.
OUT2
= 0.3A,
= 0.3A,
IN2
= 1.2V,
= 1µF, C
(continued)
O1
= 10µF, C
10mV/div.
0.1A/div.
0.5A/div.
0.5A/div.
1V/div.
2V/div.
2V/div.
5V/div.
V
V
V
I
OUT2
OUT1
OUT1
OUT2
V
V
SW
SW
I
I
L
L
Heavy Load Ripple
EN1 = V
I
Over Current Protection
I
LDO Over Current
Protection
V
OUT1
OUT1
IN2
O2
= 3.3V, V
= 0.8A Resistive Load
= 0.3A Resistive Load
= 1µF, L = 2.2µH,
IN
= 5V,
400ns/div.
OUT2
= 2.5V
6