參數(shù)資料
型號(hào): LT1176CS#TR
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 2.2 A SWITCHING REGULATOR, 120 kHz SWITCHING FREQ-MAX, PDSO20
封裝: PLASTIC, SOL-20
文件頁數(shù): 2/4頁
文件大?。?/td> 166K
代理商: LT1176CS#TR
2
LT1176/LT1176-5
A
U
G
W
A
W
U
W
A
R
BSOLUTEXI
TI
S
Input Voltage .......................................................... 38V
Switch Voltage With Respect to Input Voltage ........ 50V
Switch Voltage With Respect to Ground Pin
(VSW Negative) (Note 6) ......................................... 20V
Feedback Pin Voltage....................................... – 2V, 10V
Shutdown Pin Voltage (Not to Exceed VIN) ............. 35V
Status Pin Voltage
(Current Must Be Limited to 5mA When Status Pin
Switches “ON”) ................................................... 30V
ILIM Pin Voltage (Forced)...................................... 5.5V
Maximum Operating Ambient Temperature Range
LT1176C/LT1176C-5 .............................. 0
°C to 70°C
Maximum Operating Junction Temperature Range
LT1176C/LT1176C-5 ............................ 0
°C to 125°C
Storage Temperature Range ................ – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec) 300
°C
WU
U
PACKAGE/ORDER I FOR ATIO
ORDER PART
NUMBER
1
2
3
4
8
7
6
5
TOP VIEW
VIN
ILIM
GND
FB/SENSE
VSW
VC
STATUS
SHUTDOWN
N8 PACKAGE
8-LEAD PLASTIC DIP
TJ MAX = 125°C, θJA = 90°C/ W*
TJMAX = 125 °C, θJA = 50°C/ W*
ORDER PART
NUMBER
LT1176CN8
LT1176CN8-5
ELECTRICAL C
C
HARA TERISTICS T
J = 25°C, VIN = 25V, unless otherwise noted
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Switch “ON” Voltage (Note 1)
ISW = 0.2A
q
1.1
V
ISW = 1A
q
1.4
V
Switch “OFF” Leakage
VIN = 25V, VSW = 0
150
A
VIN = VMAX, VSW = 0 (Note 7)
250
A
Supply Current (Note 2)
VFB = 2.5V, VIN ≤ 35V
q
7.5
10
mA
VSHDN = 0.1V (Device Shutdown) (Note 8)
q
140.0
300
A
Minimum Supply Voltage
Normal Mode
q
7.3
8.0
V
Startup Mode (Note 3)
q
3.5
4.8
V
Switch Current Limit (Note 4)
ILIM Open
q
1.2
1.7
2.2
A
RLIM = 10k (Note 5)
1.2
A
RLIM = 7k (Note 5)
0.8
A
Maximum Duty Cycle
q
85
90
%
Switching Frequency
90
100
110
kHz
q
85
120
kHz
VFB = 0V Through 2k (Note 4) (LT1176)
20
kHz
VSENSE = 0V (Note 4) (LT1176-5)
20
kHz
Switching Frequency Line Regulation
8V
≤ VIN ≤ VMAX (Note 7)
q
0.03
0.1
%/ V
Error Amplifier Voltage Gain (Note 9)
1V
≤ VC ≤ 4V
2000
V/ V
Error Amplifier Transconductance (Note 9)
3700
5000
8000
mho
Error Amplifier Source and Sink Current
Source (VFB = 2V or VSENSE = 4V)
100.0
140.0
225.0
A
Sink (VFB = 2.5V or VSENSE = 5.5V)
0.7
1.0
1.6
mA
*These thermal resistance numbers are for typical mounting technique. Lower thermal resistance
can be obtained with large copper lands, thermal glues or heatsinks.
1
2
3
4
5
6
7
8
9
10
TOP VIEW
S PACKAGE
20-LEAD PLASTIC SOL
20
19
18
17
16
15
14
13
12
11
VIN
NC
ILIM
GND
NC
FB/SENSE
NC
VSW
NC
VC
GND
STATUS
SHUTDOWN
NC
LT1176CS
LT1176CS-5
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