Datasheet

3
LT1310
sn1310 1310fs
Feedback Voltage
TEMPERATURE (°C)
–50
1.22
FB VOLTAGE (V)
1.23
1.24
1.25
1.26
1.27
–25
02550
1310 G01
75 100
TEMPERATURE (°C)
–50
140
120
100
80
60
40
20
0
25 75
1310 G02
–25 0
50 100
FEEDBACK CURRENT (nA)
TEMPERATURE (°C)
–50
2.50
UNDERVOLTAGE LOCKOUT (V)
2.55
2.60
2.65
2.70
2.80
–25
02550
1310 G03
75 100
2.75
Feedback Pin Current Undervoltage Lockout
Oscillator Frequency
vs C
T
Capacitor
CAPACITOR (pF)
20
1000
FREQUENCY (kHz)
3000
6000
40
60
LT1372 • G10
2000
5000
4000
80
100
PLL-LPF = HIGH
Oscillator Frequency
vs C
T
Capacitor
CAPACITOR (pF)
100
FREQUENCY (kHz)
1200
1600
2000
900
1310 G05
800
400
0
300
500
700
1100
PLL-LPF = HIGH
Oscillator Frequency
vs Feedback Voltage
FEEDBACK (V)
0
800
1000
1400
0.6 1.0
1310 G06
600
400
0.2 0.4
0.8 1.2 1.4
200
0
1200
FREQUENCY (kHz)
220pF C
T
CAPACITOR
Oscillator Frequency
220pF Capacitor on C
T
Pin
Maximum Duty Cycle
vs Oscillator Frequency
TEMPERATURE (°C)
–50
1600
1400
1200
1000
800
600
400
200
25 75
1310 G07
–25 0
50 100
FREQUENCY (kHz)
PLL-LPF = HIGH
Oscillator Frequency
47pF Capacitor on C
T
Pin
TEMPERATURE (°C)
–50
2000
FREQUENCY (kHz)
2300
2600
2900
3200
3800
–25
02550
1310 G08
75 100
3500
PLL-LPF = HIGH
OSCILLATOR FREQENCY (kHz)
500 1000
50
MAX DUTY CYCLE (%)
70
100
1500
2500
3000
1310 G09
60
90
80
2000
3500
4000
100°C
25°C
–50°C
TYPICAL PERFOR A CE CHARACTERISTICS
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