參數(shù)資料
型號: LT1241 Series
廠商: Linear Technology Corporation
英文描述: High Speed Current Mode Pulse Width Modulators(高速,電流模式脈寬調(diào)制器)
中文描述: 高速電流模式脈寬調(diào)制器(高速,電流模式脈寬調(diào)制器)
文件頁數(shù): 3/16頁
文件大小: 284K
代理商: LT1241 SERIES
3
LT1241 Series
PARAMETER
Error Amplifier Section
Output Voltage High Level
Output Voltage Low Level
Current Sense Section
Gain
Maximum Current Sense Input Threshold
Power Supply Rejection Ratio
Input Bias Current
Delay to Output
Blanking Time
Blanking Override Voltage
Output Section
Output Low Level
CONDITIONS
MIN
TYP
MAX
UNITS
V
PIN2
= 2.3V, R
L
= 15k to GND
V
PIN2
= 2.7V, R
L
= 15k to Pin 8
G
5
5.6
0.2
V
V
G
1.1
G
2.85
0.90
3.00
1.00
70
–1
50
100
1.5
3.15
1.10
V/V
V
PIN3
< 1.1V
G
V
G
dB
μ
A
ns
ns
G
10
100
G
V
I
OUT
= 20mA
I
OUT
= 200mA
I
OUT
= 20mA
I
OUT
= 200mA
C
L
= 1nF, T
J
= 25
°
C
C
L
= 1.0nF, T
J
= 25
°
C
I
O
= 1mA
G
G
0.25
0.75
0.4
2.2
V
V
V
V
Output High Level
G
G
12.0
11.75
Rise Time
Fall Time
Output Clamp Voltage
Undervoltage Lockout
Start-Up Threshold
LT1241
LT1242/LT1244
LT1243/LT1245
Minimum Operating Voltage
LT1241/LT1243/LT1245
LT1242/LT1244
Hysteresis
LT1241
LT1242/LT1244
LT1243/LT1245
PWM
Maximum Duty Cycle
LT1241/LT1244/LT1245
LT1242/LT1243
Minimum Duty Cycle
Total Device
Start-Up Current
Operating Current
50
30
18
80
60
19.5
ns
ns
V
G
G
G
G
9.0
15
7.8
9.6
16
8.4
10.2
17
9.0
V
V
V
G
G
7.0
9.0
7.6
10
8.2
11
V
V
1.6
5.5
0.4
2.0
6.0
0.8
V
V
V
T
J
= 25
°
C
T
J
= 25
°
C
46
94
48
96
0
%
%
%
G
G
170
7
250
10
μ
A
mA
G
The
G
denotes those specifications which apply over the full operating
temperature range.
Note 1:
Unless otherwise specified, V
CC
= 15V, R
T
= 10k, C
T
= 3.3nF.
(Notes 1, 2)
ELECTRICAL 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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