参数资料
| 型号： | FAN5026MTC |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | IC CONTROLLER DDR 28TSSOP |
| 产品变化通告： | Mold Compound Change 30/Nov/2007 |
| 标准包装： | 49 |
| 应用： | 控制器，DDR |
| 输入电压： | 3 V ~ 16 V |
| 输出数： | 2 |
| 输出电压： | 0.9 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 28-TSSOP |
| 包装： | 管件 |
| 其它名称： | FAN5026MTC_NL FAN5026MTC_NL-ND |
March 2011
FAN5026
Dual DDR / Dual-Output PWM Controller
Features
Highly Flexible, Dual Synchronous Switching PWM
Controller that Includes Modes for:
- DDR Mode with In-phase Operation for
Reduced Channel Interference
Description
The FAN5026 PWM controller provides high efficiency
and regulation for two output voltages adjustable in the
range of 0.9V to 5.5V required to power I/O, chip-sets,
and memory banks in high-performance computers,
set-top boxes, and VGA cards. Synchronous
-
-
90° Phase-shifted, Two-stage DDR Mode
for Reduced Input Ripple
Dual Independent Regulators, 180° Phase
Shifted
rectification and hysteretic operation at light loads
contribute to high efficiency over a wide range of loads.
Efficiency is enhanced by using MOSFET R DS(ON) as a
current-sense component.
Complete DDR Memory Power Solution
Feedforward ramp modulation, average-current mode
-
-
V TT Tracks V DDQ/2
V DDQ/2 Buffered Reference Output
control, and internal feedback compensation provide
fast response to load transients. Out-of-phase operation
with 180-degree phase shift reduces input current
Lossless Current Sensing on Low-Side MOSFET or
Precision Over-Current Using Sense Resistor
V CC Under-Voltage Lockout
Wide Input Range: 3V to 16V
Excellent Dynamic Response with Voltage
Feedforward and Average Current-Mode Control
Power-Good Signal
Supports DDR-II and HSTL
ripple. The controller can be transformed into a
complete DDR memory power supply solution by
activating a designated pin. In DDR Mode, one of the
channels tracks the output voltage of another channel
and provides output current sink and source capability
— essential for proper powering of DDR chips. The
buffered reference voltage required by this type of
memory is also provided. The FAN5026 monitors these
outputs and generates separate PGx (power good)
signals when the soft-start is completed and the output
is within ±10% of the set point.
28-Lead Thin-Shrink Small-Outline Package
Over-voltage protection prevents the output voltage
Applications
DDR V DDQ and V TT Voltage Generation
PC Dual Power Supply
Server DDR Power
Desktop Computer
Graphics Cards
from exceeding 120% of the set point. Normal operation
is automatically restored when over-voltage conditions
cease. Under-voltage protection latches the chip off
when output drops below 75% of the set value after the
soft-start sequence for this output is completed. An
adjustable over-current function monitors the output
current by sensing the voltage drop across the lower
MOSFET. If precision current-sensing is required, an
external current-sense resistor may be used.
Related Resources
Application Note — AN-6002 Component
Calculations and Simulation Tools
Ordering Information
Operating
Part Number
Temperature
Package
Packing Method
Range
FAN5026MTCX
-40 to +85°C
28-Lead Thin-Shrink Small-Outline Package (TSSOP)
Tape and Reel
? 2005 Fairchild Semiconductor Corporation
FAN5026 ? Rev. 1.0.8
www.fairchildsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| FAN5026MTC_Q | 功能描述:电流型 PWM 控制器 PFC Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| FAN5026MTCX | 功能描述:电流型 PWM 控制器 PFC Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| FAN5029 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:8-Bit Programmable 2- to 5-Phase Synchronous Buck Controller |
| FAN5029 WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN5029_07 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:8-Bit Programmable 2- to 5-Phase Synchronous Buck Controller |
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