参数资料
型号: LT1373CN8#PBF
厂商: Linear Technology
文件页数: 2/12页
文件大小: 0K
描述: IC REG MULTI CONFIG ADJ 8DIP
标准包装: 50
类型: 降压(降压),升压(升压),反相,Cuk,回扫,正向转换器
输出类型: 可调式
输出数: 1
输出电压: 1.25 V ~ 35 V
输入电压: 2.7 V ~ 25 V
PWM 型: 电流模式
频率 - 开关: 250kHz
电流 - 输出: 1.5A
同步整流器:
工作温度: 0°C ~ 125°C
安装类型: 通孔
封装/外壳: 8-DIP(0.300",7.62mm)
包装: 管件
供应商设备封装: 8-PDIP
产品目录页面: 1327 (CN2011-ZH PDF)
LT1373
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1)
Supply Voltage ....................................................... 30V
ORDER PART
Switch Voltage
TOP VIEW
NUMBER
LT1373CN8
LT1373IN8
LT1373HVCN8
LT1373HVIN8
LT1373CS8 LT1373IS8
1373
1373H
LT1373...............................................................  35V
LT1373HV .......................................................... 42V
S/S Pin Voltage ....................................................... 30V
Feedback Pin Voltage (Transient, 10ms) .............. ± 10V
Feedback Pin Current ........................................... 10mA
Negative Feedback Pin Voltage
(Transient, 10ms) ............................................. ± 10V
Operating Junction Temperature Range
Commercial ........................................ 0 ° C to 125 ° C*
Industrial ......................................... – 40 ° C to 125 ° C
Short Circuit ......................................... 0 ° C to 150 ° C
Storage Temperature Range ................ – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec)................. 300 ° C
V C 1 8 V SW
FB 2 7 GND
NFB 3 6 GND S
S/S 4 5 V IN
LT1373HVCS8 LT1373HVIS8
N8 PACKAGE S8 PACKAGE
8-LEAD PDIP 8-LEAD PLASTIC SO
S8 PART MARKING
T JMAX = 125 ° C, θ JA = 100 ° C/ W (N8)
T JMAX = 125 ° C, θ JA = 120 ° C/ W (S8)
1373I 1373HI
Consult factory for Military grade parts.
*Units shipped prior to Date Code 9552 are rated at 100 ° C maximum
operating temperature.
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at T A = 25 ° C.
V IN = 5V, V C = 0.6V, V FB = V REF , V SW , S/S and NFB pins open, unless otherwise noted.
SYMBOL
V REF
I FB
PARAMETER
Reference Voltage
Feedback Input Current
CONDITIONS
Measured at Feedback Pin
V C = 0.8V
V FB = V REF
q
MIN
1.230
1.225
TYP
1.245
1.245
50
MAX
1.260
1.265
150
UNITS
V
V
nA
q
275
nA
Reference Voltage Line Regulation
2.7V ≤ V IN ≤ 25V, V C = 0.8V
q
0.01
0.03
%/V
V NFB
Negative Feedback Reference Voltage
Measured at Negative Feedback Pin
Feedback Pin Open, V C = 0.8V
q
– 2.51
– 2.55
– 2.45
– 2.45
– 2.39
– 2.35
V
V
I NFB
Negative Feedback Input Current
Negative Feedback Reference Voltage
V NFB = V NFR
2.7V ≤ V IN ≤ 25V, V C = 0.8V
q
q
– 12
–7
0.01
–2
0.05
μ A
%/V
Line Regulation
g m
Error Amplifier Transconductance
Error Amplifier Source Current
? I C = ± 5 μ A
V FB = V REF – 150mV, V C = 1.5V
q
q
250
150
25
375
50
500
600
90
μ mho
μ mho
μ A
A V
Error Amplifier Sink Current
Error Amplifier Clamp Voltage
Error Amplifier Voltage Gain
V C Pin Threshold
V FB = V REF + 150mV, V C = 1.5V
High Clamp, V FB = 1V
Low Clamp, V FB = 1.5V
Duty Cycle = 0%
q
1.70
0.25
0.8
850
1.95
0.40
250
1
1500
2.30
0.52
1.25
μ A
V
V
V/ V
V
f
Switching Frequency
2.7V ≤ V IN ≤ 25V
0 ° C ≤ T J ≤ 125 ° C
– 40 ° C ≤ T J ≤ 0 ° C (I Grade)
q
225
210
200
250
250
275
290
290
kHz
kHz
kHz
Maximum Switch Duty Cycle
Switch Current Limit Blanking Time
q
85
95
340
500
%
ns
2
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