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參數資料
| 型號： | SG3549 |
| 廠商： | Microsemi Corporation |
| 英文描述： | CURRENT SENSE LATCH |
| 中文描述： | 電流檢測鎖存 |
| 文件頁數： | 1/4頁 |
| 文件大?。?/td> | 74K |
| 代理商： | SG3549 |
4/90 Rev 1.1 2/94
Copyright
1994
L
IN
F
IN
ITY
Microelectronics Inc.
11861 Western Avenue
∞
∞
Garden Grove, CA 92841
(714) 898-8121
∞
FAX: (714) 893-2570
1
SG1549/SG2549/SG3549
CURRENT SENSE LATCH
DESCRIPTION
This monolithic integrated circuit is an analog latch device with digital reset. It was
specifically designed to provide pulse-by-pulse current limiting for switch-mode power
supply systems, but many other application are also feasible. Its function is to provide
a latching switch action upon sensing an input threshold voltage, with reset accom-
plished by an external clock signal. This device can be interfaced directly with many
kinds of pulse width modulating control IC's, including the SG1524, SG1525A and
SG1527A.
The input threshold for the latch circuit is 100mV, which can be referenced either to
ground or to a wide-ranging positive voltage. There are high and low-going output
signals available, and both the supply voltage and clock signal can be taken directly
from an associated PWM control chip.
With delays in the range of 200 nanoseconds, this latch circuit is ideal for fast reaction
sensing to provide overall current limiting, short circuit protection, or transformer
saturation control.
FEATURES
Current sensing with 100mV
threshold
Common-mode input at ground or
to 40V
Complementary outputs
Automatic reset from PWM clock
180ns delay
Interface direct to SG1524,
SG1525A, SG1527A
HIGH RELIABILITY FEATURES
- SG1549
Available to MIL-STD-883
LMI level "S" processing available
Radiation data available
BLOCK DIAGRAM
SCHEMATIC
相關PDF資料 |
PDF描述 |
|---|---|
| SG3549M | CURRENT SENSE LATCH |
| SG3549Y | CURRENT SENSE LATCH |
| SG2626DW | DUAL HIGH SPEED DRIVER |
| SG2626J | DUAL HIGH SPEED DRIVER |
| SG3626DW | DUAL HIGH SPEED DRIVER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SG3549D | 制造商:Microsemi Corporation 功能描述:CURRENT SENSE LATCH 8SOIC - Bulk |
| SG3549M | 制造商:Microsemi Corporation 功能描述:CURRENT SENSE LATCH 8PDIP - Bulk |
| SG3549Y | 制造商:Microsemi Corporation 功能描述:CURRENT SENSE LATCH 8CDIP - Bulk |
| SG355 | 制造商:Ametherm Inc 功能描述:Thermistor NTC 2Ohm 25% 2-Pin |
| SG355ENK-6846-P3 | 制造商:TOKO Inc 功能描述: |
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