LTC3805-5_15 Datasheet, PDF (5/20 Pages) Linear Technology – Adjustable Frequency Current Mode Flyback/ Boost/SEPIC DC/DC Controller

TYPICAL PERFORMANCE CHARACTERISTICS
LTC3805-5
Reference Voltage
vs Temperature
812
808
804
800
796
792
788
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
38055 G01
Oscillator Frequency
vs Supply Voltage
203
202
201
R_FS = 124kΩ
200
199
198
197
196
4
5
6
7
8
9
V_CC (V)
38055 G04
Reference Voltage
vs Supply Voltage
0.800300
0.800200
0.800100
0.800000
0.799900
0.799800
0.799700
4
5
6
7
8
V_CC (V)
Oscillator Frequency
vs Temperature
202
9 10
38055 G02
201
R_FS = 124kΩ
200
199
198
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
38055 G05
Oscillator Frequency vs R_FS
800
700
600
500
400
300
200
100
0
0
100
200
300
400
R_FS (kΩ)
38055 G03
RUN Undervoltage Lockout
Thresholds vs Temperature
1.205
1.200
V_RUN(ON)
1.195
1.190
1.185
1.180
V_RUN(OFF)
1.175
1.170
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
38055 G06
RUN Hysteresis Current
vs Temperature
5.20
V_CC Undervoltage Lockout
Thresholds vs Temperature
5.0
5.10
V_TURN(ON)
4.5
5.00
V_TURN(OFF)
4.0
4.90
3.5
4.80
4.70
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
38055 G07
3.0
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
38055 G08
38055fe
5