参数资料
型号: LT1076CT7
厂商: Linear Technology
文件页数: 3/16页
文件大小: 0K
描述: IC REG MULTI CONFIG ADJ TO220-7
标准包装: 50
类型: 降压(降压),升压(升压),反相,回扫
输出类型: 可调式
输出数: 1
输出电压: 2.5 V ~ 50 V
输入电压: 8 V ~ 45 V
频率 - 开关: 100kHz
电流 - 输出: 2A
同步整流器:
工作温度: 0°C ~ 70°C
安装类型: 通孔
封装/外壳: TO-220-7 成形引线
包装: 管件
供应商设备封装: TO-220-7
LT1074/LT1076
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. T j = 25 ° C, V IN = 25V, unless otherwise noted.
PARAMETER
Switch “On” Voltage (Note 2)
CONDITIONS
I SW = 1A, T j ≥ 0 ° C
LT1074
I SW = 1A, T j < 0 ° C
I SW = 5A, T j ≥ 0 ° C
I SW = 5A, T j < 0 ° C
LT1076
I SW = 0.5A
I SW = 2A
MIN
TYP
MAX
1.85
2.1
2.3
2.5
1.2
1.7
UNITS
V
V
V
V
V
V
Switch “Off” Leakage
LT1074
LT1076
V IN ≤ 25V, V SW = 0
V IN = V MAX, V SW = 0 (Note 8)
V IN = 25V, V SW = 0
V IN = V MAX, V SW = 0 (Note 8)
5
10
300
500
150
250
μ A
μ A
μ A
μ A
Supply Current (Note 3)
Minimum Supply Voltage
V FB = 2.5V, V IN ≤ 40V
40V < V IN < 60V
V SHUT = 0.1V (Device Shutdown) (Note 9)
Normal Mode
Startup Mode (Note 4)
8.5
9
140
7.3
3.5
11
12
300
8
4.8
mA
mA
μ A
V
V
Switch Current Limit (Note 5)
LT1074
I LIM Open
5.5
6.5
8.5
A
R LIM = 10k (Note 6)
R LIM = 7k (Note 6)
4.5
3
A
A
LT1076
I LIM Open
2
2.6
3.2
A
R LIM = 10k (Note 6)
R LIM = 7k (Note 6)
1.8
1.2
A
A
Maximum Duty Cycle
85
90
%
Switching Frequency
90
100
110
kHz
T j ≤ 125 ° C
T j > 125 ° C
V FB = 0V through 2k ? (Note 5)
85
85
20
120
125
kHz
kHz
kHz
Switching Frequency Line Regulation
Error Amplifier Voltage Gain (Note 7)
Error Amplifier Transconductance
8V ≤ V IN ≤ V MAX (Note 8)
1V ≤ V C ≤ 4V
3700
0.03
2000
5000
0.1
8000
%/V
V/V
μ mho
Error Amplifier Source and Sink Current
Feedback Pin Bias Current
Source (V FB = 2V)
Sink (V FB = 2.5V)
V FB = V REF
100
0.7
140
1
0.5
225
1.6
2
μ A
mA
μ A
Reference Voltage
Reference Voltage Tolerance
V C = 2V
V REF (Nominal) = 2.21V
All Conditions of Input Voltage, Output
2.155
2.21
± 0.5
± 1
2.265
± 1.5
± 2.5
V
%
%
Voltage, Temperature and Load Current
Reference Voltage Line Regulation
V C Voltage at 0% Duty Cycle
8V ≤ V IN ≤ V MAX (Note 8)
Over Temperature
0.005
1.5
–4
0.02
%/V
V
mV/ ° C
Multiplier Reference Voltage
24
V
Shutdown Pin Current
Shutdown Thresholds
V SH = 5V
V SH ≤ V THRESHOLD ( ? 2.5V)
Switch Duty Cycle = 0
Fully Shut Down
5
2.2
0.1
10
2.45
0.3
20
50
2.7
0.6
μ A
μ A
V
V
Thermal Resistance Junction to Case
LT1074
LT1076
2.5
4.0
° C/W
° C/W
sn1074 1074fds
3
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