en5312q Enpirion, en5312q Datasheet - Page 6

• Manufacturer Part Number: en5312q
• Description: 1a Synchronous Buck Regulator With Integrated Inductor
• Manufacturer: Enpirion

March 2007
Typical Performance Characteristics
©Enpirion 2007 all rights reserved, E&OE
I
I
500mA/Div
500mA/Div
V
V
10mV/Div
10mV/Div
V
V
50mV/Div
50mV/Div
Load
Load
out
out
out
out
100
100
90
90
80
80
70
70
60
60
50
50
40
40
30
30
20
20
10
10
100
100
0
0
Output Ripple
Output Ripple
95
95
90
90
85
85
80
80
75
75
70
70
65
65
60
60
55
55
50
50
50
50
Transient Response
Transient Response
Efficiency vs Output Current
Efficiency vs Output Current
Efficiency vs Output Current
Efficiency vs Output Current
50
50
V
V
V
V
Output Cap = 10 µF 0805
Output Cap = 10 µF 0805
V
V
V
V
I
I
load
load
IN
IN
OUT
OUT
IN
IN
OUT
OUT
= 5.0V
= 5.0V
= 5.0V
= 5.0V
150
150
= 100mA to 800mA
= 100mA to 800mA
150
150
= 3.3V
= 3.3V
V
V
= 3.3V
= 3.3V
V
V
IN
IN
IN
IN
= 5.0V
= 5.0V
250
250
= 3.3V
= 3.3V
250
250
V
V
V
V
IN
IN
IN
IN
350
350
Load Current (mA)
Load Current (mA)
Load Current (mA)
Load Current (mA)
350
350
= 2.5V
= 2.5V
= 3.6V
= 3.6V
200ns/Div
200ns/Div
V
V
450
450
20µs/Div
20µs/Div
IN
IN
450
450
= 5.0V
= 5.0V
550
550
550
550
650
650
650
650
V
V
OUT
OUT
750
750
750
750
V
V
OUT
OUT
= 3.3V
= 3.3V
850
850
= 1.8V
= 1.8V
850
850
950
950
950
950
6
Enable
Enable
1V/Div
1V/Div
I
I
500mA/Div
500mA/Div
V
V
1V/Div
1V/Div
V
V
50mV/Div
50mV/Div
Load
Load
V
10mV/Div
out
out
out
out
out
100
100
Output Ripple
95
95
90
90
85
85
80
80
75
75
70
70
65
65
60
60
55
55
50
50
Transient Response
Transient Response
Efficiency vs Output Current
Efficiency vs Output Current
Start up Waveform
Start up Waveform
V
V
V
V
I
I
V
V
V
V
50
50
load
load
V
V
Output Cap = 2 x 10 µF 0805
IN
IN
OUT
OUT
IN
IN
OUT
OUT
IN
OUT
= 5.0V
= 5.0V
= 3.3V
= 3.3V
= 5.0V
= 100mA to 800mA
= 100mA to 800mA
V
V
V
V
150
150
= 3.3V
= 3.3V
= 1.8V
= 1.8V
= 3.3V
IN
IN
IN
IN
= 3.3V
= 3.3V
= 3.6V
= 3.6V
250
250
Load Current (mA)
Load Current (mA)
V
V
350
350
IN
IN
= 5.0V
= 5.0V
400µs/Div
400µs/Div
200ns/Div
20µs/Div
20µs/Div
450
450
550
550
650
650
www.enpirion.com
V
V
750
750
OUT
OUT
= 2.5V
= 2.5V
850
850
950
950
EN5312QI