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FAN1577A PDF预览

FAN1577A

更新时间: 2024-01-01 16:32:50
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 控制器
页数 文件大小 规格书
15页 1639K
描述
Dual Synchronous DC/DC Controller

FAN1577A 技术参数

是否无铅:不含铅是否Rohs认证:符合
生命周期:Active零件包装代码:SOIC
包装说明:SOP,针数:20
Reach Compliance Code:unknown风险等级:5.69
Is Samacsys:N其他特性:ALSO OPERATES IN ADJUSTABLE VOLTAGE AS LOW AS 0.7V
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:8.5 V标称输入电压:12 V
JESD-30 代码:R-PDSO-G20JESD-609代码:e3
长度:12.8 mm湿度敏感等级:3
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:SOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):260座面最大高度:2.65 mm
表面贴装:YES切换器配置:PHASE-SHIFT
最大切换频率:372 kHz温度等级:INDUSTRIAL
端子面层:MATTE TIN端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30宽度:7.5 mm
Base Number Matches:1

FAN1577A 数据手册

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October 2010  
FAN1577A  
Dual Synchronous DC/DC Controller  
Features  
Description  
The FAN1577A 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±1.0%. It is connected to the error amplifier’s  
positive terminal for voltage feedback regulation.  
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Integrates Two Sets of MOSFET Drivers  
Two Independent PWM Controllers  
Constant Frequency Operation: Free-running Fixed-  
Frequency Oscillator Programmable: 61kHz to 340kHz  
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Maximum Input Supply Voltage: 15V  
Programmable Output as Low as 0.7V  
A 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 0.7mA.  
Internal Error Amplifier Reference Voltage:  
0.7V ±1.0%  
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Two Soft-Start / EN Function Pins  
Programmable Over-Current Protection (OCP)  
30V HIGH Voltage Pin for Bootstrap Voltage  
Output Over-Voltage Protection (OVP)  
20-Pin SOP  
The fixed-frequency is programmable from 61kHz to  
340kHz. The Over-Current Protection (OCP) level can  
be programmed by an external current-sense resistor. It  
has two integrated sets of internal MOSFET drivers.  
FAN1577A is available in  
package (SOP).  
a
20-pin small-outline  
Applications  
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CPU and GPU Vcore Power Supply  
Power Supply Requiring Two Independent Outputs  
Ordering Information  
Part Number  
Operating Temperature Range  
-40°C to +85°C  
Package  
Packing Method  
FAN1577AMX  
20-Lead, Small-Outline Package  
Tape & Reel  
© 2010 Fairchild Semiconductor Corporation  
FAN1577A • Rev. 1.0.0  
www.fairchildsemi.com  

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