LTC3810EG LINER [Linear Technology], LTC3810EG Datasheet - Page 5

• Manufacturer Part Number: LTC3810EG
• Description: 100V Current Mode Synchronous Switching Regulator Controller
• Manufacturer: LINER [Linear Technology]

TYPICAL PERFORMANCE CHARACTERISTICS
100mV/
5V/DIV
5A/DIV
5A/DIV
0.5V/
V
V
I
OUT
DIV
100
OUT
DIV
OUT
V
90
80
70
FB
I
L
10
V
FRONT PAGE CIRCUIT
Effi ciency vs Input Voltage
Load Transient Response
V
0A TO 5A LOAD STEP
FRONT PAGE CIRCUIT
Short-Circuit/
Foldback Operation
IN
IN
f = 250kHz
FRONT PAGE CIRCUIT
= 48V
= 48V
20
30
INPUT VOLTAGE (V)
I
I
OUT
OUT
40
200μs/DIV
50μs/DIV
= 5A
= 0.5A
50
60
70
3810 G07
3810 G04
3810 G01
80
50V/DIV
INTV
5A/DIV
5V/DIV
5V/DIV
SS/TRACK
V
0.5V/DIV
0.5V/DIV
OUT
V
5V/DIV
5A/DIV
CC
IN
I
L
V
100
OUT
V
Start-Up
V
I
MODE/SYNC = 0V
FRONT PAGE CIRCUIT
95
90
85
80
75
70
LOAD
FB
I
IN
L
= 48V
Tracking
V
I
MODE/SYNC = 0V
FRONT PAGE CIRCUIT
0
Effi ciency vs Load Current
LOAD
IN
= 1A
= 48V
V
1
= 1A
IN
= 12V
2
LOAD CURRENT (A)
500μs/DIV
3
V
500μs/DIV
IN
INTV
= 36V
V
Si7850 MOSFETs
MODE/SYNC = INTV
f = 250kHz
OUT
CC
4
= 5V
V
5
IN
= 60V
SS/TRACK
6
3810 G02
3810 G08
V
CC
FB
3810 G05
7
SS/TRACK
10V/DIV
4V/DIV
5A/DIV
V
0.5V/DIV
OUT
100mV/
2A/DIV
I
L
V
260
230
V
R
FRONT PAGE CIRCUIT
280
270
250
240
Short-Circuit/
Fault Timeout Operation
OUT
DIV
I
IN
SHORT
TH
I
L
= 48V
10
Frequency vs Input Voltage
Pulse Skip Mode Operation
V
I
MODE/SYNC = INTV
FRONT PAGE CIRCUIT
OUT
MODE/SYNC = 0V
FRONT PAGE CIRCUIT
IN
= 0.1Ω
= 48V
= 100mA
20
30
INPUT VOLTAGE (V)
10ms/DIV
I
I
OUT
OUT
40
20μs/DIV
LTC3810
CC
= 0A
= 5A
50
60
70
3810 G03
3810fb
3810 G09
5
3810 G06
80