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SG1577DZ PDF预览

SG1577DZ

更新时间: 2024-09-30 04:04:59
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
14页 648K
描述
Dual Synchronous DC/DC Controller

SG1577DZ 技术参数

是否Rohs认证:符合生命周期:Obsolete
零件包装代码:DIP包装说明:LEAD FREE, DIP-20
针数:20Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.74Is Samacsys:N
模拟集成电路 - 其他类型:DUAL SWITCHING CONTROLLER控制模式:VOLTAGE-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:15 V
最小输入电压:8 V标称输入电压:12 V
JESD-30 代码:R-PDIP-T20长度:26.162 mm
功能数量:1端子数量:20
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:DIP
封装等效代码:DIP20,.3封装形状:RECTANGULAR
封装形式:IN-LINE认证状态:Not Qualified
座面最大高度:5.334 mm子类别:Switching Regulator or Controllers
表面贴装:NO切换器配置:PUSH-PULL
最大切换频率:352 kHz温度等级:INDUSTRIAL
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL宽度:7.62 mm
Base Number Matches:1

SG1577DZ 数据手册

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April 2008  
SG1577  
Dual Synchronous DC/DC Controller  
Features  
Description  
The SG1577 is a high-efficiency, voltage-mode, dual-  
channel, synchronous DC/DC PWM controller for two  
independent outputs. The two channels are operated  
out of phase. The internal reference voltage is trimmed  
to 0.7V±1.5%. It is connected to the error amplifier’s  
positive terminal for voltage feedback regulation. The  
soft-start circuit ensures the output voltage can be  
gradually and smoothly increased from zero to its final  
regulated value. The soft-start pin can also be used for  
chip-enable function. When two soft-start pins are  
grounded, the chip is disabled and the total operation  
current can be reduced to under 0.55mA. The fixed-  
frequency is programmable from 60kHz to 320kHz. The  
Over-Current Protection (OCP) level can be  
programmed by an external current sense resistor. It  
has two integrated sets of internal MOSFET drivers.  
SG1577 is available in 20-pin SOP and DIP packages.  
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Integrated Two Sets of MOSFET Drivers  
Two Independent PWM Controllers  
Constant Frequency Operation: Free-running Fixed  
Frequency Oscillator Programmable: 60kHz to  
320kHz  
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Wide Range Input Supply Voltage: 8~15V  
Programmable Output as Low as 0.7V  
Internal Error Amplifier Reference Voltage:  
0.7V±1.5%  
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Two Soft-Start / EN Functions  
Programmable Over-Current Protection (OCP)  
30V HIGH Voltage Pin for Bootstrap Voltage  
Output Over-Voltage Protection (OVP)  
SOP and DIP 20-pin  
Applications  
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CPU and GPU Vcore Power Supply  
Power Supply Requiring Two Independent Outputs  
Ordering Information  
Operating  
Temperature Range  
Part Number  
Package  
Packing Method  
SG1577SZ  
SG1577DZ  
-40°C to +85°C  
20-pin Small Outline Package (SOP)  
20-pin Dual In-Line Package (DIP)  
Tape & Reel  
Tube  
-40°C to +85°C  
All packages are lead free per JEDEC: J-STD-020B standard.  
© 2007 Fairchild Semiconductor Corporation  
SG1577 • Rev. 1.0.1  
www.fairchildsemi.com  

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