Datasheet

LT8300
4
8300f
Typical perForMance characTerisTics
Boundary Mode Waveforms Discontinuous Mode Waveforms Burst Mode Waveforms
V
IN
Shutdown Current
V
IN
Quiescent Current,
Sleep Mode
V
IN
Quiescent Current,
Active Mode
Output Load and Line Regulation Output Temperature Variation
Switching Frequency
vs Load Current
T
A
= 25°C, unless otherwise noted.
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
5.20
4.85
5.15
4.90
5.00
5.05
5.10
4.95
4.80
8300 G01
300250200150100500
V
IN
= 36V
V
IN
= 48V
V
IN
= 72V
FRONT PAGE APPLICATION
AMBIENT TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
5.5
4.6
5.4
4.7
5.0
5.1
5.2
5.3
4.8
4.9
4.5
8300 G02
1507550 125100250–25–50
FRONT PAGE APPLICATION
V
IN
= 48V, I
OUT
= 200mA
LOAD CURRENT (mA)
FREQUENCY (kHz)
500
100
200
400
300
0
8300 G03
300250200150100500
FRONT PAGE APPLICATION
V
IN
= 48V
2µs/DIV
FRONT PAGE APPLICATION
V
IN
= 48V, I
OUT
= 300mA
I
LPRI
100mA/DIV
V
SW
50V/DIV
V
OUT
50mV/DIV
8300 G04
2µs/DIV
FRONT PAGE APPLICATION
V
IN
= 48V, I
OUT
= 60mA
I
LPRI
100mA/DIV
V
SW
50V/DIV
V
OUT
50mV/DIV
8300 G05
20µs/DIV
FRONT PAGE APPLICATION
V
IN
= 48V, I
OUT
= 1mA
I
LPRI
100mA/DIV
V
SW
50V/DIV
V
OUT
50mV/DIV
8300 G06
V
IN
(V)
I
Q
(µA)
10
2
4
8
6
0
8300 G07
100806040200
T
J
= –55°C
T
J
= 150°C
T
J
= 25°C
V
IN
(V)
I
Q
(µA)
100
50
60
80
90
70
40
8300 G08
100806040200
T
J
= 25°C
T
J
= –55°C
T
J
= 150°C
V
IN
(V)
I
Q
(µA)
380
300
320
360
340
280
8300 G09
100806040200
T
J
= 25°C
T
J
= –55°C
T
J
= 150°C