LT1776IS8#PBF Linear Technology, LT1776IS8#PBF Datasheet - Page 2

• Manufacturer Part Number: LT1776IS8#PBF
• Description: IC SW REG STEP-DOWN HI-EFF 8SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT1776IS8#PBF

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.24 ~ 34 V
• Current - Output: 700mA
• Frequency - Switching: 200kHz
• Voltage - Input: 7.4 ~ 40 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Primary Input Voltage: 40V
• No. Of Outputs: 1
• Output Voltage: 34V
• Output Current: 1A
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +125°C
• Msl: MSL 1 - Unlimited
• Supply Voltage Range: 6.7V To 60V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

The
ABSOLUTE
LT1776
(Note 1)
Supply Voltage (Note 5) .......................................... 60V
Switch Voltage (Note 5) ........................................... 60V
SHDN, SYNC Pin Voltage ........................................... 7V
V
FB Pin Voltage ........................................................... 3V
Operating Junction Temperature Range
Storage Temperature Range ................. – 65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
ELECTRICAL CHARACTERISTICS
V
SYMBOL
Power Supplies
V
I
I
V
Feedback Amplifier
V
I
g
I
V
Output Switch
V
I
Current Amplifier
2
VIN
VCC
IN
SRC
LIM
m
IN
IN(MIN)
VCC
REF
CL
ON
CC
LT1776C ................................................ 0 C to 125 C
LT1776I ............................................ – 40 C to 125 C
= 40V, V
, I
Pin Voltage ....................................................... 30V
SNK
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
SW
PARAMETER
Minimum Input Voltage
Thermally Limited Continuous Operating Voltage
V
V
V
Shutdown Mode I
Reference Voltage
FB Pin Input Bias Current
Feedback Amplifier Transconductance
Feedback Amplifier Source or Sink Current
Feedback Amplifier Clamp Voltage
Reference Voltage Line Regulation
Voltage Gain
Output Switch On Voltage
Switch Current Limit
Control Pin Threshold
Control Voltage to Switch Transconductance
IN
CC
CC
open, V
Supply Current
Supply Current
Dropout Voltage
W
MAXIMUM
CC
= 5V, V
VIN
W W
C
= 1.4V unless otherwise noted.
RATINGS
U
CONDITIONS
V
V
(Note 2)
V
12V V
I
(Note 3)
Duty Cycle = 0%
SW
C
C
SHDN
lc = 10 A
= 0V
= 0V
= 0.5A
= 0V
IN
60V
PACKAGE/ORDER
Consult factory for Military grade parts.
SHDN
N8 PACKAGE
8-LEAD PDIP
GND
V
V
T
T
SW
JMAX
CC
JMAX
1
2
3
4
= 125 C,
= 125 C,
TOP VIEW
JA
JA
= 130 C/ W (N8)
= 110 C/ W (S8)
8-LEAD PLASTIC SO
S8 PACKAGE
8
7
6
5
V
FB
SYNC
V
C
IN
1.225
1.215
0.55
MIN
400
200
200
0.9
60
45
INFORMATION
U
1.240
S8 PART MARKING
0.70
TYP
620
600
650
100
600
6.7
3.2
2.8
2.0
1.0
1.1
40
30
2
ORDER PART
A
LT1776CN8
LT1776CS8
LT1776IN8
LT1776IS8
= 25 C.
NUMBER
W
1776
1776I
1.255
1.265
MAX
1500
1000
1500
0.01
1.25
800
900
170
220
7.0
7.4
4.0
5.0
3.1
1.5
1.0
50
75
UNITS
U
mho
mho
%/V
V/V
A/V
mA
mA
nA
V
V
V
A
A
V
A
A
V
V
A
A
V
V
A
V