LT1766 Linear Technology, LT1766 Datasheet - Page 2

• Manufacturer Part Number: LT1766
• Description: 5.5V to 60V 1.5A/ 200kHz Step-Down Switching Regulator
• Manufacturer: Linear Technology

PACKAGE/ORDER I FOR ATIO
ELECTRICAL CHARACTERISTICS
LT1766/LT1766-5
ABSOLUTE AXI U RATI GS
(Note 1)
Input Voltage (V
BOOST Pin Above SW ............................................ 35V
BOOST Pin Voltage ................................................. 68V
SYNC, SENSE Voltage (LT1766-5) ........................... 7V
SHDN Voltage ........................................................... 6V
BIAS Pin Voltage .................................................... 30V
FB Pin Voltage/Current (LT1766) ................... 3.5V/2mA
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The
V
PARAMETER
Reference Voltage (V
SENSE Voltage (LT1766-5)
SENSE Pin Resistance (LT1766-5)
FB Input Bias Current (LT1766)
Error Amp Voltage Gain
Error Amp g
V
EA Source Current
EA Sink Current
V
V
2
C
C
C
IN
to Switch g
Switching Threshold
High Clamp
T
JMAX
= 15V, V
BOOST
denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
GND
GND
= 125 C,
SW
V
NC
NC
NC
IN
EXPOSED PAD (PIN 17) IS GND.
MUST BE SOLDERED TO PCB
m
16-LEAD PLASTIC TSSOP
C
1
2
3
4
5
6
7
8
m
= 1.5V, SHDN = 1V, BOOST open circuit, SW open circuit, unless otherwise noted.
JA
FE PACKAGE
= 45 C/W,
TOP VIEW
REF
IN
17
) ................................................. 60V
W
) (LT1766)
JC
(PAD) = 10 C/W
16
15
14
13
12
11
10
9
GND
SHDN
SYNC
NC
FB/SENSE
V
BIAS
GND
W W
C
U
LT1766EFE
LT1766IFE
LT1766EFE-5
LT1766IFE-5
ORDER PART
W
CONDITIONS
5.5V V
V
5.5V V
V
(Notes 2, 9)
dl (V
FB = 1V or V
FB = 1.4V or V
Duty Cycle = 0
SHDN = 1V
OL
OL
NUMBER
U
+ 0.2 V
+ 0.2V V
C
) = 10 A (Note 9)
IN
IN
SENSE
60V
60V
C
SENSE
U
C
V
OH
V
= 4.1V
OH
= 5.7V
– 0.2
– 0.2V
Operating Junction Temperature Range
Storage Temperature Range ................ – 65 C to 150 C
Lead Temperature (Soldering, 10 sec)................. 300 C
T
JMAX
LT1766EFE/LT1766EFE-5/LT1766EGN/
LT1766EGN-5 (Note 8,10) ................. – 40 C to 125 C
LT1766IFE/LT1766IFE-5/
LT1766IGN/LT1766IGN-5 (Note 8,10) – 40 C to 125 C
BOOST
GND
GND
= 125 C,
SW
V
NC
NC
NC
IN
FOUR CORNER PINS SOLDERED
16-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
TO GROUND PLANE
JA
GN PACKAGE
= 85 C/W,
TOP VIEW
JC
(PIN 8) = 25 C/W
16
15
14
13
12
11
10
9
GND
SHDN
SYNC
NC
FB/SENSE
V
BIAS
GND
C
1.204
1.195
1500
1000
MIN
4.94
4.90
200
125
100
9.5
GN PART MARKING
1.219
2000
–0.5
13.8
TYP
400
225
225
1766
1766I
1.7
0.9
2.1
5
LT1766EGN
LT1766IGN
LT1766EGN-5
LT1766IGN-5
ORDER PART
NUMBER
J
1.234
1.243
3000
4200
= 25 C.
MAX
–1.5
5.06
5.10
400
450
19
17665
1766I5
UNITS
1766fa
Mho
Mho
V/V
A/V
k
V
V
V
V
A
A
A
V
V