参数资料
型号: MC34712EPR2
厂商: Freescale Semiconductor
文件页数: 23/24页
文件大小: 0K
描述: IC CONVERTER DDR 24QFN
标准包装: 2,500
应用: 转换器,DDR
输入电压: 3 V ~ 6 V
输出数: 1
输出电压: 0.7 V ~ 1.35 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-VFQFN 裸露焊盘
供应商设备封装: 24-QFN 裸露焊盘(4x4)
包装: 带卷 (TR)
REVISION HISTORY
REVISION HISTORY
REVISION
DATE
DESCRIPTION OF CHANGES
1.0
2.0
3.0
4.0
2/2006
11/2006
2/2007
5/2007
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Pre-release version
Implemented Revision History page
Initial release
Converted format from Market Assessment to Product Preview
Major updates to the data, form, and style
Replaced all electrolytic capacitors with ceramic ones in Figure 1
Deleted Deadtime in Dynamic Electrical Characteristics
Moved Figures 8 ahead of TYPE III COMPENSATION NETWORK
Changed Features fom 2% to 1%
Removed Machine Model in Maximum Ratings
Added minimum limits to Input DC Supply Current (11) Normal mode, Input DC Supply Current (11)
Standby mode, and Input DC Supply Current (11) Shutdown mode
Changed High Side N-CH Power MOSFET (M3) RDS(ON) (12) and Low Side N-CH Power MOSFET
Changed M2 RDS(ON)
Changed VREFOUT Buffered Reference Voltage Accuracy (17) , VREFOUT Buffered Reference
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Changed STBY Pin Internal Pull-up Resistor and SD Pin Internal Pull-up Resistor
Changed Soft Start Duration , Over-current Limit Retry Timeout Period , and Output Under-voltage/
Changed PG Reset Delay and Thermal Shutdown Retry Time-out Period (19)
Changed drawings in Typical Applications
Changed drawing in Type III Compensation Network
Removed PC34712EP/R2 from the ordering information and added MC34712EP/R2
Changed the data sheet status to Advance Information
5.0
6.0
12/2008
4/2012
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Made changes to Switching Node (SW) Pin , BOOT Pin (Referenced to SW Pin) , Output Under-
voltage Threshold , Output Over-voltage Threshold , High Side N-CH Power MOSFET (M3)
RDS(ON) (12) , Low Side N-CH Power MOSFET (M4) RDS(ON) (12) , Device Charge Model (CDM)
Added Machine Model (MM) , SW Leakage Current (Standby and Shutdown modes) , Error Amplifier
DC Gain (16) , Error Amplifier Unit Gain Bandwidth (16) , Error Amplifier Slew Rate (16) , Error Amplifier
Added pin 25 to Figure 3 and the 34712 Pin Definitions
Added the section Layout Guidelines
Changed typical for Minimum ON Time on page 9
34712
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
23
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