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ISL6227IAZ

更新时间： 2024-09-24 20:32:39
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瑞萨 - RENESAS 双倍数据速率开关光电二极管
页数 文件大小 规格书
27页 1476K
描述
Dual Mobile-Friendly PWM Controller with DDR Option; QFN28, QSOP28; Temp Range: See Datasheet

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ISL6227IAZ 技术参数

生命周期：Unknown零件包装代码：QFN, QSOP
包装说明：SSOP, SSOP28,.25针数：28, 28
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：5.12Is Samacsys：N
其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 0.9V TO 5.5V模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：HYSTERETIC CURRENT MODE
最大输入电压：28 V最小输入电压：5 V
标称输入电压：16 VJESD-30 代码：R-PDSO-G28
JESD-609代码：e3长度：9.905 mm
湿度敏感等级：3功能数量：1
端子数量：28最高工作温度：100 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：SSOP封装等效代码：SSOP28,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.75 mm子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：PHASE-SHIFT
最大切换频率：345 kHz温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn) - annealed端子形式：GULL WING
端子节距：0.635 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：3.895 mm
Base Number Matches：1

ISL6227IAZ 数据手册

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DATASHEET  
ISL6227  
FN9094  
Rev 7.00  
May 4, 2009  
Dual Mobile-Friendly PWM Controller with DDR Option  
The ISL6227 dual PWM controller delivers high efficiency  
precision voltage regulation from two synchronous buck DC/DC  
converters. It was designed especially to provide power  
regulation for DDR memory, chipsets, graphics and other  
system electronics in Notebook PCs. The ISL6227’s wide  
input voltage range capability allows for voltage conversion  
directly from AC/DC adaptor or Li-Ion battery pack.  
Features  
• Provides Regulated Output Voltage in the Range 0.9V to  
5.5V  
• Operates From an Input Battery Voltage Range of 5V to  
28V or From 3.3V/5V System Rail  
• Complete DDR1 and DDR2 Memory Power Solution with  
VTT Tracking VDDQ/2 and a VDDQ/2 Buffered Reference  
Output  
Automatic mode transition of constant-frequency synchronous  
rectification at heavy load, and hysteretic (HYS)  
diode-emulation at light load, assure high efficiency over a wide  
range of conditions. The HYS mode of operation can be  
disabled separately on each PWM converter if  
• Flexible PWM or HYS Plus PWM Mode Selection with  
HYS Diode Emulation at Light Loads for Higher System  
Efficiency  
constant-frequency continuous-conduction operation is desired  
for all load levels. Efficiency is further enhanced by using the  
• r  
DS(ON)  
Current Sensing  
• Excellent Dynamic Response With Voltage Feed-Forward  
and Current Mode Control Accommodating Wide Range  
LC Filter Selections  
lower MOSFET r  
DS(ON)  
as the current sense element.  
Voltage-feed-forward ramp modulation, current mode  
control, and internal feedback compensation provide fast  
response to input voltage and load transients. Input current  
ripple is minimized by channel-to-channel PWM phase shift  
of 0°, 90° or 180° (determined by input voltage and status of  
the DDR pin).  
• Undervoltage Lock-Out on VCC Pin  
• Power-Good, Overcurrent, Overvoltage, Undervoltage  
Protection for Both Channels  
• Synchronized 300kHz PWM Operation in PWM Mode  
• Pb-Free Available (RoHS compliant)  
The ISL6227 can control two independent output voltages  
adjustable from 0.9V to 5.5V, or by activating the DDR pin,  
transform into a complete DDR memory power supply  
solution. In DDR mode, CH2 output voltage VTT tracks CH1  
output voltage VDDQ. CH2 output can both source and sink  
current, an essential power supply feature for DDR memory.  
The reference voltage VREF required by DDR memory is  
generated as well.  
Applications  
• Notebook PCs and Desknotes  
• Tablet PCs/Slates  
• Hand-Held Portable Instruments  
Ordering Information  
In dual power supply applications the ISL6227 monitors the  
output voltage of both CH1 and CH2. An independent PGOOD  
(power good) signal is asserted for each channel after the  
soft-start sequence has completed, and the output voltage is  
within PGOOD window. In DDR mode CH1 generates the only  
PGOOD signal.  
PART  
PART  
TEMP.  
PKG.  
NUMBER  
MARKING RANGE (°C) PACKAGE DWG. #  
ISL6227CA* ISL 6227CA -10 to +100 28 Ld QSOP M28.15  
ISL6227CAZ* ISL 6227CAZ -10 to +100 28 Ld QSOP M28.15  
(Note)  
(Pb-Free)  
ISL6227IA*  
ISL 6227IA  
-40 to +100 28 Ld QSOP M28.15  
Built-in overvoltage protection prevents the output from going  
above 115% of the set point by holding the lower MOSFET on  
and the upper MOSFET off. When the output voltage re-enters  
regulation, PGOOD will go HIGH and normal operation  
automatically resumes. Once the soft-start sequence has  
completed, undervoltage protection latches the offending  
channel off if the output drops below 75% of its set point value.  
Adjustable overcurrent protection (OCP) monitors the voltage  
ISL6227IAZ* ISL 6227IAZ -40 to +100 28 Ld QSOP M28.15  
(Note) (Pb-Free)  
ISL6227HRZ* ISL 6227HRZ -10 to +100 28 Ld QFN  
(Note) (Pb-Free)  
L28.5x5  
ISL6227IRZ* ISL 6227IRZ -40 to +100 28 Ld QFN  
(Note) (Pb-Free)  
L28.5x5  
*Add “-T” suffix for tape and reel. Please refer to TB347 for details on  
reel specifications.  
drop across the r  
of the lower MOSFET. If more precise  
DS(ON)  
current-sensing is required, an external current sense resistor  
may be used.  
NOTE: These Intersil Pb-free plastic packaged products employ  
special Pb-free material sets, molding compounds/die attach  
materials, and 100% matte tin plate plus anneal (e3 termination  
finish, which is RoHS compliant and compatible with both SnPb and  
Pb-free soldering operations). Intersil Pb-free products are MSL  
classified at Pb-free peak reflow temperatures that meet or exceed  
the Pb-free requirements of IPC/JEDEC J STD-020.  
FN9094 Rev 7.00  
May 4, 2009  
Page 1 of 27  
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中文翻译

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ISL6227IAZ 替代型号

型号 品牌 替代类型 描述 数据表
ISL6227CA-T INTERSIL

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 Dual Mobile-Friendly PWM Controller with DDR Option

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ISL6227IAZ-T RENESAS

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