參數(shù)資料
型號(hào): LT1776CS8
廠商: LINEAR TECHNOLOGY CORP
元件分類(lèi): 穩(wěn)壓器
英文描述: RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述: 1 A SWITCHING REGULATOR, 230 kHz SWITCHING FREQ-MAX, PDSO8
封裝: 0.150 INCH, PLASTIC, SO-8
文件頁(yè)數(shù): 2/20頁(yè)
文件大小: 147K
代理商: LT1776CS8
2
LT1776
ABSOLUTE
AXI
U
M
RATU
W
(Note 1)
Supply Voltage (Note 5) .......................................... 60V
Switch Voltage (Note 5)........................................... 60V
SHDN, SYNC Pin Voltage........................................... 7V
V
CC
Pin Voltage ....................................................... 30V
FB Pin Voltage........................................................... 3V
Operating Junction Temperature Range
LT1776C................................................0
°
C to 125
°
C
LT1776I............................................ –40
°
C to 125
°
C
Storage Temperature Range................. –65
°
C to 150
°
C
Lead Temperature (Soldering, 10 sec)..................300
°
C
W
W
PACKAGE/ORDER I
FOR
ATIO
W
U
U
ORDER PART
NUMBER
LT1776CN8
LT1776CS8
LT1776IN8
LT1776IS8
S8 PART MARKING
1776
1776I
Consult factory for Military grade parts.
V
IN
= 40V, V
SW
open, V
CC
= 5V, V
C
= 1.4V unless otherwise noted.
The
G
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25
°
C.
ELECTRICAL CHARACTERISTICS
SYMBOL
Power Supplies
V
IN(MIN)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Minimum Input Voltage
6.7
7.0
7.4
V
V
V
G
Thermally Limited Continuous Operating Voltage
V
IN
Supply Current
G
40
620
I
VIN
V
C
= 0V
800
900
4.0
5.0
3.1
50
75
μ
A
μ
A
mA
mA
G
I
VCC
V
CC
Supply Current
V
C
= 0V
3.2
G
V
VCC
V
CC
Dropout Voltage
Shutdown Mode I
VIN
(Note 2)
V
SHDN
= 0V
2.8
30
V
μ
A
μ
A
G
Feedback Amplifier
V
REF
Reference Voltage
1.225
1.215
1.240
1.255
1.265
1500
1000
1500
170
220
V
V
G
I
IN
g
m
FB Pin Input Bias Current
Feedback Amplifier Transconductance
600
650
nA
lc =
±
10
μ
A
400
200
60
45
μ
mho
μ
mho
G
I
SRC
, I
SNK
Feedback Amplifier Source or Sink Current
100
μ
A
μ
A
V
G
V
CL
Feedback Amplifier Clamp Voltage
Reference Voltage Line Regulation
Voltage Gain
Output Switch
V
ON
Output Switch On Voltage
I
LIM
Switch Current Limit
Current Amplifier
Control Pin Threshold
Control Voltage to Switch Transconductance
2.0
12V
V
IN
60V
G
0.01
%/V
V/V
200
600
I
SW
= 0.5A
(Note 3)
1.0
0.70
1.5
1.0
V
A
G
0.55
Duty Cycle = 0%
0.9
1.1
2
1.25
V
A/V
T
JMAX
= 125
°
C,
θ
JA
= 130
°
C/W (N8)
T
JMAX
= 125
°
C,
θ
JA
= 110
°
C/W (S8)
1
2
3
4
8
7
6
5
TOP VIEW
V
C
FB
SYNC
V
IN
SHDN
V
CC
V
SW
GND
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
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