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參數(shù)資料
| 型號： | LT1245MJ8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, CDIP8 |
| 封裝： | 0.300 INCH, HERMETIC SEALED, CERDIP-8 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 284K |
| 代理商： | LT1245MJ8 |
3
LT1241 Series
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Error Amplifier Section
Output Voltage High Level
VPIN2 = 2.3V, RL = 15k to GND
q
5
5.6
V
Output Voltage Low Level
VPIN2 = 2.7V, RL = 15k to Pin 8
q
0.2
1.1
V
Current Sense Section
Gain
q
2.85
3.00
3.15
V/V
Maximum Current Sense Input Threshold
VPIN3 < 1.1V
q
0.90
1.00
1.10
V
Power Supply Rejection Ratio
q
70
dB
Input Bias Current
q
–1
10
A
Delay to Output
q
50
100
ns
Blanking Time
100
ns
Blanking Override Voltage
1.5
V
Output Section
Output Low Level
IOUT = 20mA
q
0.25
0.4
V
IOUT = 200mA
q
0.75
2.2
V
Output High Level
IOUT = 20mA
q
12.0
V
IOUT = 200mA
q
11.75
V
Rise Time
CL = 1nF, TJ = 25°C50
80
ns
Fall Time
CL = 1.0nF, TJ = 25°C30
60
ns
Output Clamp Voltage
IO = 1mA
q
18
19.5
V
Undervoltage Lockout
Start-Up Threshold
LT1241
q
9.0
9.6
10.2
V
LT1242/LT1244
q
15
16
17
V
LT1243/LT1245
q
7.8
8.4
9.0
V
Minimum Operating Voltage
LT1241/LT1243/LT1245
q
7.0
7.6
8.2
V
LT1242/LT1244
q
9.0
10
11
V
Hysteresis
LT1241
1.6
2.0
V
LT1242/LT1244
5.5
6.0
V
LT1243/LT1245
0.4
0.8
V
PWM
Maximum Duty Cycle
LT1241/LT1244/LT1245
TJ = 25°C46
48
%
LT1242/LT1243
TJ = 25°C94
96
%
Minimum Duty Cycle
q
0%
Total Device
Start-Up Current
q
170
250
A
Operating Current
q
710
mA
The q denotes those specifications which apply over the full operating
temperature range.
Note 1: Unless otherwise specified, VCC = 15V, RT = 10k, CT = 3.3nF.
(Notes 1, 2)
ELECTRICAL C
C
HARA TERISTICS
Note 2: Low duty cycle pulse techniques are used during test to maintain
junction temperature close to ambient.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1245MJ8/883 | 制造商:Linear Technology 功能描述:Current Mode PWM Controller 1A 8-Pin CDIP |
| LT1245MJ8/883C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller |
| LT1246 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1MHz Off-Line Current Mode PWM and DC/DC Converter |
| LT1246C | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1MHz Off-Line Current Mode PWM and DC/DC Converter |
| LT1246CJ8 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller |
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