Datasheet

5
LT1510/LT1510-5
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
Switching Frequency vs
Temperature
DUTY CYCLE (%)
010305070
I
CC
(mA)
80
1510 G04
20
40
60
8
7
6
5
4
3
2
1
0
125°C
0°C
25°C
V
CC
= 16V
I
CC
vs Duty Cycle
TEMPERATURE (°C)
–20
FREQUENCY (kHz)
200 40 80 12060
100
140
1510 G05
210
205
200
195
190
185
180
I
BAT
(A)
0.1
EFFICIENCY (%)
100
98
96
94
92
90
88
86
84
82
80
0.5
0.9 1.51.31.1
1510 G01
0.3 0.7
V
CC
= 15V (EXCLUDING DISSIPATION
ON INPUT DIODE D3)
V
BAT
= 8.4V
Efficiency of Figure 2 Circuit
I
CC
vs V
CC
V
CC
(V)
0
I
CC
(mA)
7.0
6.5
6.0
5.5
5.0
4.5
5
10 15 20
1510 G03
25 30
125°C
25°C
0°C
MAXIMUM DUTY CYCLE
I
VA
(mA)
0
∆V
OVP
(mV)
4
3
2
1
0
0.8
1510 G08
0.20.1 0.3 0.5 0.7 0.9
0.4
0.6
1.0
125°C
25°C
I
VA
vs ∆V
OVP
(Voltage Amplifier)
V
CC
(V)
0
∆V
REF
(V)
0.003
0.002
0.001
0
–0.001
–0.002
–0.003
5
10 15 20
1510 G02
25 30
ALL TEMPERATURES
V
REF
Line Regulation
TEMPERATURE (°C)
0
DUTY CYCLE (%)
120
1510 G09
40 80
98
97
96
95
94
93
92
91
90
20 60 100 140
Maximum Duty Cycle
V
PROG
(V)
0123
54
I
PROG
(mA)
6
0
–6
1510 G11

125°C
25°C
PROG Pin Characteristic
V
C
(V)
0 0.2 0.6 1.0 1.4 1.8
I
VC
(mA)
–1.20
–1.08
–0.96
–0.84
–0.72
–0.60
–0.48
–0.36
–0.24
–0.12
0
0.12
1.6
1510 G10
0.4
0.8
1.2
2.0
V
C
Pin Characteristic