LT1766EGN#TR Linear Technology, LT1766EGN#TR Datasheet - Page 4

• Manufacturer Part Number: LT1766EGN#TR
• Description: IC SW REG STP-DWN 200KHZ 16-SSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT1766EGN#TR

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.2 ~ 54 V
• Current - Output: 1.5A
• Frequency - Switching: 200kHz
• Voltage - Input: 5.5 ~ 60 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Other names: LT1766EGNTR

LT1766/LT1766-5
ELECTRICAL CHARACTERISTICS
The
V
PARAMETER
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
(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
V
V
Switch Current Limit
Switch On Resistance
Maximum Switch Duty Cycle
Switch Frequency
4
SW
SW
C
C
C
IN
IN
to Switch g
Switching Threshold
High Clamp
Line Regulation
Frequency Shifting Threshold
= 15V, V
= 15V, V
l
l
denotes specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T
denotes specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T
m
C
C
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
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
CONDITIONS
5.5V ≤ V
V
(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
SW
SW
C
C
C
C
OL
C
C
Set to Give DC = 50%
Open
Open, Shutting Down
Open, Starting Up
Open, Boost = V
Set to Give DC = 50%
= 1.5A, Boost = V
= 0.75A, Boost = V
+ 0.2 ≤ V
C
) = ±10μA (Note 9)
IN
IN
SW
IN
IN
BIAS
BIAS
≤ 60V
≤ 60V
+ 5V, I
+ 5V, I
SENSE
SENSE
SENSE
≤ 1.5A
C
IN
(LT1766E/LT1766I Grade)
SENSE
= 5V
= 5V
≤ V
≤ 60V, SW = 0V, V
SW
SW
OH
= 4.1V
= 4.1V
= 4.1V
IN
= 5.7V
– 0.2
IN
= 0.5A
= 1.5A
+ 5V, FB = 1V or V
IN
+ 5V (Note 7)
+ 5V (Note 7)
C
Open
SENSE
= 4.1V
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
1.204
1.175
1500
0.15
0.25
0.75
MIN
MIN
184
172
228
200
900
125
100
184
135
2.3
93
90
93
90
1.219
2000
0.05
2.42
0.37
0.45
–0.5
TYP
200
200
TYP
400
225
225
200
200
0.2
0.8
4.6
1.8
1.4
2.9
1.5
1.7
0.9
2.1
0.2
96
12
45
25
20
96
2
J
J
= 25°C.
= 25°C.
1.234
1.265
3000
4200
MAX
MAX
0.15
2.53
–1.5
216
228
200
700
400
450
216
228
0.3
0.4
5.5
2.2
4.2
0.6
0.6
2.2
0.3
0.8
25
70
75
3
3
UNITS
UNITS
μMho
μMho
1766fc
%/V
kHz
kHz
kHz
A/V
kHz
kHz
mA
mA
mA
mA
V/V
kΩ
μA
μA
μA
μA
μA
%
%
%
%
Ω
Ω
Ω
Ω
V
V
V
V
V
V
V
V
V
V
V
A