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參數(shù)資料
| 型號： | LT1961IMS8E#TR |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 154K |
| 代理商： | LT1961IMS8E#TR |
3
LT1961
1961fa
ELECTRICAL CHARACTERISTICS
PARAMETER
CONDITION
MIN
TYP
MAX
UNITS
FB Input Current
●
0
– 0.2
– 0.4
μA
FB to VC Voltage Gain
0.4V < VC < 0.9V
150
350
FB to VC Transconductance
ΔIVC = ±10μA
●
500
850
1300
μMho
VC Pin Source Current
VFB = 1V
●
– 85
– 120
– 165
μA
VC Pin Sink Current
VFB = 1.4V
●
70
110
165
μA
VC Pin to Switch Current Transconductance
2.4
A/V
VC Pin Minimum Switching Threshold
Duty Cycle = 0%
0.3
V
VC Pin 1.5A ISW Threshold
0.9
V
Maximum Switch Duty Cycle
VC = 1.2V, ISW = 100mA
●
80
90
%
VC = 1.2V, ISW = 1A, 25°C ≤ TA ≤ 125°C75
80
%
VC = 1.2V, ISW = 1A, TA ≤ 25°C70
75
%
SHDN Threshold Voltage
●
1.28
1.35
1.42
V
SHDN Input Current (Shutting Down)
SHDN = 60mV Above Threshold
●
–7
–10
–13
μA
SHDN Threshold Current Hysteresis
SHDN = 100mV Below Threshold
4
7
10
μA
SYNC Threshold Voltage
1.5
2.2
V
SYNC Input Frequency
1.5
2
MHz
SYNC Pin Resistance
ISYNC = 1mA
20
k
Ω
The
● denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. VIN = 15V, VC = 0.8V, SHDN, SYNC and switch open unless otherwise noted.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT1961E is guaranteed to meet performance specifications
from 0
°C to 125°C junction temperature. Specifications over the –40°C to
125
°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT1961I is guaranteed over the – 40C to 125C operating junction
temperature range.
Note 3: Minimum input voltage is defined as the voltage where the
internal regulator enters lockout. Actual minimum input voltage to
maintain a regulated output will depend on output voltage and load
current. See Applications Information.
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