March 2007
EN5312QI
Typical Performance Characteristics
Efffiiciieennccyy vvss OOuuttppuutt CCuurrrreenntt
Efffiiciieennccyy vvss OOuuttppuutt CCuurrrreenntt
1100
1100
990
VIINN = 3..33VV
995
880
990
VVIN = 5.0V
770
885
660
880
VIINN = 5..00VV
550
775
VIINN = 3..66VV
440
770
330
665
220
660
VVO
= 33.3V
UUT
10
VOO
= 22.5V
555
UUT
0
550
50
150
250
350
450
550
650
750
850
9550
50
150
250
350
450
550
650
750
850
9550
Loadd CCuurrrreenntt ((mmAA))
Loadd CCuurrrreenntt ((mmAA))
Efffiiciieennccyy vvss OOuuttppuutt CCuurrrreenntt
Start up Waveform
1100
995
VIINN = 2..55VV
990
Vout
1V/Div
885
880
775
VIINN = 5..00VV
770
VIINN = 3..66VV
665
VIINN = 3..33VV
660
VOO
= 11.8V
Enable
1V/Div
55
UUT
50
150
250
350
450
550
650
750
850
9550
VIN = 5.0V
VOUT = 3.3V
400µs/Div
Loadd CCuurrrreenntt ((mmAA))
Transient Response
Transient Response
Vout
50mV/Div
Vout
50mV/Div
ILoad
500mA/Div
ILoad
500mA/Div
VIN = 3.3V
VOUT = 1.8V
Iload = 100mA to 800mA
VIN = 5.0V
20µs/Div
20µs/Div
VOUT = 3.3V
load = 100mA to 800mA
I
Output Ripple
Output Ripple
Vout
10mV/Div
Vout
10mV/Div
VIN = 5.0V
VOUT = 3.3V
Output Cap = 10 µF 0805
200ns/Div
VIN = 5.0V
VOUT = 3.3V
Output Cap = 2 x 10 µF 0805
200ns/Div
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