LTC3805-5 Linear Technology, LTC3805-5 Datasheet - Page 4

• Manufacturer Part Number: LTC3805-5
• Description: Adjustable Frequency Current Mode Flyback DC/DC Controller
• Manufacturer: Linear Technology

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