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参数资料
| 型号： | LT1952IGN-1#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/28页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR ISO PWM CM 16-SSOP |
| 标准包装： | 100 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 560kHz |
| 占空比： | 90% |
| 电源电压： | 6.82 V ~ 25 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
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LT1952/LT1952-1
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T A = 25°C (Note 2). COMP = open, FB = 1.4V, R OSC = 178k, SYNC = 0V,
SS_MAXDC = V REF , V REF = 0.1μF, SD_V SEC = 2V, BLANK = 121k, DELAY = 121k, I SENSE = 0V, OC = 0V, OUT = 1nF, V IN = 15V, SOUT =
open, unless otherwise specified.
PARAMETER
COMP Low Level: V OL
CONDITIONS
I (COMP) = 250μA
MIN
TYP
0.15
MAX
0.4
UNITS
V
CURRENT SENSE
I SENSE Maximum Threshold
I SENSE Input Current (Duty Cycle = 0%)
I SENSE Input Current (Duty Cycle = 80%)
OC Threshold
OC Input Current
Default Blanking Time
Adjustable Blanking Time
COMP = 2.5V, FB = 1V
COMP = 2.5V, FB = 1V (Note 4)
COMP = 2.5V, FB = 1V (Note 4)
COMP = 2.5V, FB = 1V
(OC = 100mV)
COMP = 2.5V, FB = 1V, R BLANK = 40k (Note 10)
COMP = 2.5V, FB = 1V, R BLANK = 120k
197
98
220
–8
–35
107
–50
180
540
243
116
–100
mV
μA
μA
mV
nA
ns
ns
V BLANK
SOUT DRIVER
1
V
SOUT Clamp Voltage
SOUT Low Level
I (GATE) = 0μA, COMP = 2.5V, FB = 1V
I (GATE) = 25mA
10.5
12
0.5
13.5
0.75
V
V
SOUT High Level
SOUT Active Pull-Off in Shutdown
SOUT to OUT (Rise) DELAY (t DELAY )
V DELAY
I (GATE) = –25mA, V IN = 12V, COMP = 2.5V,
FB = 1V
V IN = 5V, SD_V SEC = 0V, SOUT = 1V
COMP = 2.5V, FB = 1V (Note 10)
R DELAY = 120k
10
1
40
120
0.9
V
mA
ns
ns
V
OUT DRIVER
OUT Rise Time
OUT Fall Time
FB = 1V, CL = 1nF (Notes 3, 6)
FB = 1V, CL = 1nF (Notes 3, 6)
50
30
ns
ns
OUT Clamp Voltage
OUT Low Level
OUT High Level
OUT Active Pull-Off in Shutdown
OUT Max Duty Cycle
OUT Max Duty Cycle Clamp
I (GATE) = 0μA, COMP = 2.5V, FB = 1V
I (GATE) = 20mA
I (GATE) = 200mA
I (GATE) = –20mA, V IN = 12V, COMP = 2.5V,
FB = 1V
I (GATE) = –200mA, V IN = 12V, COMP = 2.5V,
FB = 1V
V IN = 5V, SD_V SEC = 0V, OUT = 1V
COMP = 2.5V, FB = 1V, R DELAY = 10k
(f OSC = 200kHz), V IN = 10V
SD_V SEC = 1.4V, SS_MAXDC = V REF
COMP = 2.5V, FB = 1V, R DELAY = 10k
(f OSC = 200kHz), V IN = 10V
SD_V SEC = 1.32V, SS_MAXDC = 1.84V
SD_V SEC = 2.64V, SS_MAXDC = 1.84V
11.5
9.9
9.75
20
83
63.5
25
13
0.45
1.25
90
72
33
14.5
0.75
1.8
80.5
41
V
V
V
V
V
mA
%
%
%
19521fe
4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1952IGN-1TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Single Switch Synchronous Forward Controller |
| LT1952IGN-1TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Single Switch Synchronous Forward Controller |
| LT1952IGNPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Single Switch Synchronous Forward Controller |
| LT1952IGNTR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Single Switch Synchronous Forward Controller |
| LT1952IGNTRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Single Switch Synchronous Forward Controller |
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