lt1766efe-trpbf Linear Technology Corporation, lt1766efe-trpbf Datasheet - Page 3

• Manufacturer Part Number: lt1766efe-trpbf
• Description: High Voltage 1.5a, 200khz Step-down Switching Regulators
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
(LT1766H GRADE)
The
V
PARAMETER
Reference Voltage (V
FB Input Bias Current
Error Amp Voltage Gain
Error Amp g
V
EA Source Current
EA Sink Current
The
V
PARAMETER
Error Amp Voltage Gain
Error Amp g
V
EA Source Current
EA Sink Current
V
V
Switch Current Limit
Switch On Resistance
Maximum Switch Duty Cycle
Switch Frequency
f
f
Minimum Input Voltage
Minimum Boost Voltage
Boost Current (Note 5)
Input Supply Current (I
Bias Supply Current (I
Shutdown Supply Current
Lockout Threshold
Shutdown Thresholds
Minimum SYNC Amplitude
SYNC Frequency Range
SYNC Input Resistance
SW
SW
C
C
C
C
IN
IN
to Switch g
to Switch g
Switching Threshold
High Clamp
Line Regulation
Frequency Shifting Threshold
= 15V, V
= 15V, V
●
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
m
m
C
C
m
m
= 1.5V, SHDN = 1V, BOOST open circuit, SW open circuit, unless otherwise noted.
= 1.5V, SHDN = 1V, BOOST open circuit, SW open circuit, unless otherwise noted.
REF
BIAS
VIN
)
)
)
CONDITIONS
5.5V ≤ V
V
(Notes 2, 9)
dl (V
FB = 1V or V
FB = 1.4V or V
CONDITIONS
(Notes 2, 9)
dl (V
FB = 1V or V
FB = 1.4V or V
Duty Cycle = 0
SHDN = 1V
V
I
FB = 1V or V
V
5.5V ≤ V
Df = 10kHz
(Note 3)
(Note 4) I
Boost = V
Boost = V
(Note 6) V
(Note 6) V
SHDN = 0V, V
V
V
V
SW
OL
C
C
C
C
C
Open, Boost = V
Set to Give DC = 50%
Open
Open, Shutting Down
Open, Starting Up
= 1.5A, Boost = V
+ 0.2 ≤ V
C
C
) = ±10µA (Note 9)
) = ±10µA (Note 9)
IN
IN
SW
IN
IN
BIAS
BIAS
≤ 60V
≤ 60V
(LT1766E/LT1766I GRADE)
+ 5V, I
+ 5V, I
SENSE
SENSE
SENSE
≤ 1.5A
C
IN
SENSE
SENSE
= 5V
= 5V
≤ V
≤ 60V, SW = 0V, V
OH
= 4.1V
= 4.1V
= 4.1V
SW
SW
IN
= 5.7V
= 5.7V
– 0.2
IN
+ 5V, FB = 1V or V
= 0.5A
= 1.5A
+ 5V (Note 7)
C
Open
SENSE
= 4.1V
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
LT1766/LT1766-5
1.204
1.175
1500
1500
1000
MIN
0.15
0.25
MIN
200
900
125
100
200
125
100
184
172
228
1.5
2.3
93
90
1.219
2000
2000
–0.5
TYP
0.05
2.42
0.37
0.45
400
225
225
TYP
400
225
225
200
200
1.7
1.7
0.9
2.1
0.2
0.8
4.6
1.8
1.4
2.9
1.5
96
12
45
25
20
2
J
J
1.234
1.265
3000
4200
3000
4200
MAX
–1.5
MAX
= 25°C.
= 25°C.
0.15
2.53
400
450
400
450
216
228
200
700
0.3
0.4
5.5
2.2
4.2
0.6
0.6
2.2
25
70
75
3
3
UNITS
UNITS
µMho
µMho
µMho
µMho
1766fb
3
%/V
V/V
A/V
V/V
A/V
kHz
kHz
kHz
mA
mA
mA
mA
kΩ
µA
µA
µA
µA
µA
µA
µA
%
%
Ω
Ω
V
V
V
V
A
V
V
V
V
V
V
V