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SG1525AL/883B PDF预览

SG1525AL/883B

更新时间： 2024-01-13 13:35:32
品牌 Logo 应用领域
美高森美 - MICROSEMI 稳压器开关式稳压器或控制器电源电路开关式控制器脉冲
页数 文件大小 规格书
7页 139K
描述
REGULATING PULSE WIDTH MODULATOR

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中文翻译

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SG1525AL/883B 技术参数

是否无铅：含铅生命周期：Obsolete
零件包装代码：QLCC包装说明：,
针数：20Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.15Is Samacsys：N
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：VOLTAGE-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：35 V
最小输入电压：8 VJESD-30 代码：S-CQCC-N20
功能数量：1端子数量：20
最高工作温度：125 °C最低工作温度：-55 °C
最大输出电流：0.5 A封装主体材料：CERAMIC, METAL-SEALED COFIRED
封装形状：SQUARE封装形式：CHIP CARRIER
认证状态：Not Qualified最大供电电流 (Isup)：20 mA
表面贴装：YES切换器配置：PUSH-PULL
最大切换频率：350 kHz温度等级：MILITARY
端子形式：NO LEAD端子位置：QUAD
Base Number Matches：1

SG1525AL/883B 数据手册

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SG1525A/SG2525A/SG3525A  
SG1527A/SG2527A/SG3527A  
REGULATING PULSE WIDTH MODULATOR  
DESCRIPTION  
FEATURES  
• 8V to 35V operation  
The SG1525A/1527A series of pulse width modulator integrated circuits are  
designed to offer improved performance and lower external parts count when used  
to implement all types of switching power supplies. The on-chip +5.1 volt reference  
is trimmed to ±1% initial accuracy and the input common-mode range of the error  
amplifier includes the reference voltage, eliminating external potentiometers and  
divider resistors. A Sync input to the oscillator allows multiple units to be slaved  
together, or a single unit to be synchronized to an external system clock. A single  
resistor between the CT pin and the Discharge pin provides a wide range of deadtime  
adjustment. These devices also feature built-in soft-start circuitry with only a timing  
capacitor required externally. A Shutdown pin controls both the soft-start circuitry  
and the output stages, providing instantaneous turn-off with soft-start recycle for  
slow turn-on. These functions are also controlled by an undervoltage lockout which  
keeps the outputs off and the soft-start capacitor discharged for input voltages less  
than that required for normal operation. Another unique feature of these PWM  
circuits is a latch following the comparator. Once a PWM pulse has been terminated  
for any reason, the outputs will remain off for the duration of the period. The latch  
is reset with each clock pulse. The output stages are totem-pole designs capable  
of sourcing or sinking in excess of 200mA. The SG1525A output stage features  
NOR logic, giving a LOW output for an OFF state. The SG1527A utilizes OR logic  
which results in a HIGH output level when OFF.  
• 5.1V reference trimmed to ±1%  
• 100Hz to 500KHz oscillator range  
• Separate oscillator sync terminal  
• Adjustable deadtime control  
• Internal soft-start  
• Input undervoltage lockout  
• Latching P.W.M. to prevent multiple  
pulses  
• Dual source/sink output drivers  
HIGH RELIABILITY FEATURES  
- SG1525A, SG1527A  
♦ Available to MIL-STD-883B  
♦ MIL-M38510/12602BEA - JAN1525AJ  
♦ MIL-M38510/12604BEA - JAN1527AJ  
♦ Radiation data available  
♦ LMI level "S" processing available  
BLOCK DIAGRAM  
11/91 Rev 1.3 10/96  
LINFINITY Microelectronics Inc.  
Copyright 1996  
11861 Western Avenue ∞ Garden Grove, CA 92841  
1
(714) 898-8121 ∞ FAX: (714) 893-2570  
1234567

中文翻译

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