LT3758 LINER [Linear Technology], LT3758 Datasheet - Page 3

• Manufacturer Part Number: LT3758
• Description: High Input Voltage, Boost, Flyback, SEPIC and Inverting Controller
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
erature range, otherwise specifi cations are at T
PARAMETER
V
V
V
V
SENSE Current Limit Threshold
SENSE Input Bias Current
Error Amplifi er
FBX Regulation Voltage (V
FBX Overvoltage Lockout
FBX Pin Input Current
Transconductance g
VC Output Impedance
V
VC Current Mode Gain (ΔV
VC Source Current
VC Sink Current
Oscillator
Switching Frequency
RT Voltage
Minimum Off-Time
Minimum On-Time
SYNC Input Low
SYNC Input High
SS Pull-Up Current
Low Dropout Regulator
INTV
INTV
INTV
INTV
INTV
INTV
Dropout Voltage (V
IN
IN
IN
IN
FBX
Operating Range
Shutdown I
Operating I
Operating I
CC
CC
CC
CC
CC
CC
Line Regulation (ΔV
Regulation Voltage
Undervoltage Lockout Threshold
Overvoltage Lockout Threshold
Current Limit
Load Regulation (ΔV
Line Regulation (ΔV
Q
Q
Q
with Internal LDO Disabled
IN
m
– V
(ΔI
FBX
INTVCC
VC
FBX(REG)
VC
/ΔFBX)
INTVCC
INTVCC
/[ΔV
/ΔV
)
SENSE
IN
/ [ΔV
)
/ V
• V
INTVCC
FBX(REG)
)
IN
• V
)
INTVCC
])
])
A
CONDITIONS
SHDN/UVLO = 0V
SHDN/UVLO = 1.15V
VC = 0.3V, R
VC = 0.3V, R
Current Out of Pin
FBX > 0V (Note 3)
FBX < 0V (Note 3)
FBX > 0V (Note 4)
FBX < 0V (Note 4)
FBX = 1.6V (Note 3)
FBX = –0.8V (Note 3)
(Note 3)
(Note 3)
FBX > 0V, 5.5V < V
FBX < 0V, 5.5V < V
VC = 1.5V
FBX = 1.7V
FBX = –0.85V
R
R
R
FBX = 1.6V
SS = 0V, Current Out of Pin
Falling INTV
UVLO Hysteresis
V
V
0 < I
8V < V
V
T
T
T
IN
IN
IN
= 25°C. V
= 41.2k to GND, FBX = 1.6V
= 140k to GND, FBX = 1.6V
= 10.5k to GND, FBX = 1.6V
= 100V
= 20V
= 6V, I
INTVCC
IN
< 100V
INTVCC
< 10mA, V
CC
T
T
IN
The
= 41.2k
= 41.2k, INTV
= 24V, SHDN/UVLO = 24V, SENSE = 0V, unless otherwise noted.
= 10mA
l
IN
IN
denotes the specifi cations which apply over the full operating temp-
< 100V (Notes 3, 6)
< 100V (Notes 3, 6)
IN
= 8V
CC
= 7.5V
l
l
l
l
–0.816
1.569
MIN
100
–10
270
5.5
1.5
4.3
11
–1
6
7
7
–0.800
0.006
0.005
0.005
1000
17.5
–0.4
TYP
350
110
–65
230
–15
300
100
220
220
–10
500
0.1
1.6
1.6
5.5
1.2
7.2
4.5
0.5
11
70
12
11
16
50
8
5
–0.784
LT3758
1.631
0.025
MAX
0.03
0.02
100
400
120
100
330
2.2
0.4
7.4
4.7
10
14
10
22
1
6
UNITS
3
%/V
%/V
%/V
3758f
MΩ
V/V
kHz
kHz
kHz
mA
mV
mA
mA
mV
μA
μA
μA
μA
nA
nA
μS
μA
μA
μA
μA
ns
ns
%
%
%
V
V
V
V
V
V
V
V