SIP12506DMP-TI-E3 VISHAY [Vishay Siliconix], SIP12506DMP-TI-E3 Datasheet - Page 5

• Manufacturer Part Number: SIP12506DMP-TI-E3
• Description: 1-MHz Boost Converter with OVP for White LED Applications
• Manufacturer: VISHAY [Vishay Siliconix]

TYPICAL WAVEFORMS
Document Number: 73861
S-70547–Rev. D, 26-Mar-07
95
90
85
80
75
70
65
60
55
50
Efficiency vs. LED Current - Driving 3 Series LEDs
V
2
EN
V
V
, 5 V/div
IN
IN
V
V
IN
= 4.2 V
= 3.6 V, 4 series LEDs, I
IN
= 3.6 V
Start-Up under Open-Load Condition
5
= 3.2 V
V
Steady State Condition
OUT
V
8
V
IN
V
OUT
, 20 mV/div (AC Coupled)
LED current (mA)
IN
= 3.6 V, open load
200 µS/div
400 nS/div
, 20 mV/div (AC Coupled)
, 5 V/div (AC Coupled)
Inductor Current, 500 mA/div
Inductor Current, 100 mA/div
11
V
LX
LOAD
, 10 V/div
14
= 20 mA
V
LX
, 20 V/div
17
20
95
90
85
80
75
70
65
60
55
50
Efficiency vs. LED Current - Driving 4 Series LEDs
2
V
V
V
EN
LX
IN
V
, 5 V/div
, 10 V/div
IN
= 3.2 V
V
V
= 4.2 V
5
IN
IN
= 3.6 V
= 3.6 V, 4 series LEDs, I
8
LED current (mA)
100 µS/div
V
Start-Up
OUT
Inductor Current, 500 mA/div
11
, 5 V/div (AC Coupled)
Vishay Siliconix
14
LOAD
SiP12506
www.vishay.com
= 20 mA
17
20
5