Datasheet

LTC3803-3
4
38033fd
TYPICAL PERFORMANCE CHARACTERISTICS
Reference Voltage vs Temperature
Reference Voltage
vs Supply Voltage
Reference Voltage
vs V
CC
Shunt Regulator Current
Oscillator Frequency
vs Temperature
Oscillator Frequency
vs Supply Voltage
Oscillator Frequency
vs V
CC
Shunt Regulator Current
V
CC
Undervoltage Lockout
Thresholds vs Temperature
V
CC
Shunt Regulator Voltage
vs Temperature
I
CC
Supply Current
vs Temperature
T
A
= 25°C unless otherwise noted.
TEMPERATURE (°C)
–60
V
FB
VOLTAGE (mV)
90
38033 G01
0–30 30 60 150120
V
CC
= 8V
780
785
790
795
800
805
810
815
820
V
CC
SUPPLY VOLTAGE (V)
6
799.0
V
FB
VOLTAGE (mV)
799.2
799.6
799.8
800.0
801.0
800.4
7
8
8.5
38033 F02
799.4
800.6
800.8
800.2
6.5
7.5
9
9.5
V
CC
b V
CLAMP1mA
I
CC
(mA)
0
V
FB
VOLTAGE (mV)
799
800
801
15
25
38033 G03
798
797
796
510 20
802
803
804
–60 900–30 30 60 150120
TEMPERATURE (°C)
OSCILLATOR FREQUENCY (kHz)
38033 G04
V
CC
= 8V
330
320
310
300
290
280
270
V
CC
SUPPLY VOLTAGE (V)
6
270
OSCILLATOR FREQUENCY (kHz)
280
290
300
310
330
6.5
7 7.5 8
38033 G05
8.5 9
320
I
CC
(mA)
0
270
OSCILLATOR FREQUENCY (kHz)
280
290
300
310
330
5
10 15 20
38033 G06
25 30 35
320
–60 90
0–30 30 60 150120
TEMPERATURE (°C)
4.0
V
CC
UNDERVOLTAGE LOCKOUT (V)
4.5
5.0
5.5
6.5
7.0
7.5
9.0
8.5
38033 G07
6.0
8.0
V
TURNOFF
V
TURNON
–60 90
0–30 30 60 150120
TEMPERATURE (°C)
9.0
V
CC
(V)
9.1
9.3
9.4
9.5
10.0
9.7
38033 G08
9.2
9.8
9.9
9.6
I
CC
= 25mA
I
CC
= 1mA
–60 90
0–30 30 60 150120
TEMPERATURE (°C)
200
SUPPLY CURRENT (μA)
225
350
250
38033 G09
300
325
275
V
CC
= 8V
V
ITH/RUN
= 1.3V