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| LTC3452_15 Datasheet, PDF (5/16 Pages) Linear Technology – Synchronous Buck-Boost MAIN/CAMERA White LED Driver | |||
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TYPICAL PERFOR A CE CHARACTERISTICS
LTC3452
PMOS RDS(ON) vs Temperature
325
300
VIN = 2.7V
275
VIN = 3.6V
250
225
VIN = 5.5V
200
VIN = 4.2V
175
150
125
â55 â35 â15 5 25 45 65 85 105 125
TEMPERATURE (°C)
3452 G10
NMOS RDS(ON) vs Temperature
325
300
275
VIN = 2.7V
250
VIN = 3.6V
225
200
VIN = 5.5V
175
VIN = 4.2V
150
125
â55 â35 â15 5 25 45 65 85 105 125
TEMPERATURE (°C)
3452 G11
Oscillator Frequency
vs Temperature
1050
VOUT = 3V
1040
1030
1020
1010
VIN = 5.5V
VIN = 4.2V
1000
990
VIN = 3.6V
980
VIN = 2.7V
970
960
950
â55 â35 â15 5 25 45 65 85 105 125
TEMPERATURE (°C)
3452 G12
Output Voltage Ripple
(Front Page Application)
Start-Up Transient
CH1, VOUT
1V/DIV
CH2, ILED
300mA FINAL VALUE
CH3, ENH
1V/DIV
VIN = 3V
VOUT = 3.1V
ILED = 100mA
3452 G13
VIN = 3.6V
ILEDH = 300mA
3452 G14
3452f
5
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