LTC3452 Linear Technology, LTC3452 Datasheet - Page 5

• Manufacturer Part Number: LTC3452
• Description: Synchronous Buck-Boost MAIN/CAMERA White LED Driver
• Manufacturer: Linear Technology

TYPICAL PERFOR A CE CHARACTERISTICS
250
200
125
325
300
275
225
175
150
–55
PMOS R
–35
–15
DS(ON)
V
TEMPERATURE (°C)
IN
5
= 3.6V
25
vs Temperature
Output Voltage Ripple
(Front Page Application)
V
V
I
LED
IN
OUT
V
45
= 3V
IN
= 100mA
= 3.1V
= 2.7V
V
IN
65
= 4.2V
V
IN
85
W
= 5.5V
105
3452 G10
U
125
250
200
125
325
300
275
225
175
150
–55
3452 G13
NMOS R
–35
–15
DS(ON)
V
IN
TEMPERATURE (°C)
5
= 3.6V
25
vs Temperature
V
IN
V
= 2.7V
45
IN
= 4.2V
V
65
IN
= 5.5V
85
Start-Up Transient
V
I
LEDH
IN
= 3.6V
105
3452 G11
= 300mA
125
1050
1040
1030
1020
1010
1000
990
980
970
960
950
–55
Oscillator Frequency
vs Temperature
V
OUT
–35
= 3V
V
–15
IN
= 4.2V
www.DataSheet4U.com
TEMPERATURE (°C)
3452 G14
5
V
V
IN
CH1, V
1V/DIV
CH2, I
300mA FINAL VALUE
CH3, EN
1V/DIV
IN
25
V
IN
= 2.7V
= 5.5V
LTC3452
= 3.6V
45
LED
OUT
H
65
85 105
3452 G12
5
3452f
125