LT1243C データシートの表示（PDF） - Linear Technology
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LT1243C Datasheet PDF : 16 Pages
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LT1241 Series
ELECTRICAL CHARACTERISTICS (Notes 1, 2)
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
Output High Level
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
CONDITIONS
VPIN2 = 2.3V, RL = 15k to GND
VPIN2 = 2.7V, RL = 15k to Pin 8
VPIN3 < 1.1V
IOUT = 20mA
IOUT = 200mA
IOUT = 20mA
IOUT = 200mA
CL = 1nF, TJ = 25°C
CL = 1.0nF, TJ = 25°C
IO = 1mA
TJ = 25°C
TJ = 25°C
MIN
TYP
MAX
UNITS
q
5
5.6
V
q
0.2
1.1
V
q
2.85
3.00
3.15
V/V
q
0.90
1.00
1.10
V
q
70
dB
q
–1
10
µA
q
50
100
ns
100
ns
1.5
V
q
0.25
0.4
V
q
0.75
2.2
V
q
12.0
V
q
11.75
V
50
80
ns
30
60
ns
q
18
19.5
V
q
9.0
9.6
10.2
V
q
15
16
17
V
q
7.8
8.4
9.0
V
q
7.0
7.6
8.2
V
q
9.0
10
11
V
1.6
2.0
V
5.5
6.0
V
0.4
0.8
V
46
48
%
94
96
%
q
0
%
q
170
250
µA
q
7
10
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.
Note 2: Low duty cycle pulse techniques are used during test to maintain
junction temperature close to ambient.
3
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