参数资料
型号: MC34716EP
厂商: Freescale Semiconductor
文件页数: 1/27页
文件大小: 0K
描述: IC CONVERTER DDR 26QFN
标准包装: 490
应用: 转换器,DDR
输入电压: 3 V ~ 6 V
输出数: 2
输出电压: 0.7 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 26-VFQFN 裸露焊盘
供应商设备封装: 26-QFN-EP(5x5)
包装: 托盘
产品目录页面: 808 (CN2011-ZH PDF)
Freescale Semiconductor ?
Advance Information
1.0 MHz Dual Switch-Mode DDR
Power Supply
The 34716 is a highly integrated, space-efficient, low cost, dual
synchronous buck switching regulator with integrated N-channel
power MOSFETs. It is a high performance point-of-load (PoL) power
supply with its second output having the ability to track an external
reference voltage. it provides a full power supply solution for Double-
Data-Rate (DDR) Memories.
Channel one provides a source only, 5.0 A drive capability, while
channel two can sink and source up to 3.0 A. Both channels are highly
efficient with tight output regulation. With its high current drive
capability, channel one can be used to supply the V DDQ to the
memory chipset. The second channel’s ability to track a reference
voltage makes it ideal to provide the termination voltage (V TT ) for
modern data buses. The 34716 also provides a buffered output
reference voltage (V REFOUT ) to the memory chipset
The 34716 offers the designer the flexibility of many control,
supervisory, and protection functions to allow for easy implementation
of complex designs. It is housed in a Pb-free, thermally enhanced,
and space efficient 26-pin exposed pad QFN.
Features
? 50 m ? integrated N-channel power MOSFETs
Document Number: MC34716
Rev 5.0, 4/2012
34716
DUAL SWITCH-MODE DDR POWER
SUPPLY
EP SUFFIX
98ASA10728D
26-PIN QFN
Range (T A )
? Input voltage operating range from 3.0 to 6.0 V
? ? 1% accurate output voltages, ranging from 0.7 to 3.6 V
? The second output tracks 1/2 an external reference voltage
? ? 1% accurate buffered reference output voltage
Device
ORDERING INFORMATION
Temperature
Package
? Programmable switching frequency range from 200 kHz to
MC34716EP/R2
-40 to 85 °C
26 QFN
1.0 MHz
? Programmable soft start timing for channel one
? Over-current limit and short-circuit protection on both channels
? Thermal shutdown
? Output over-voltage and under-voltage detection
? Active low power good output signal
? Active low standby and shutdown inputs.
34716
3.0 V to 6.0 V V I N
V DDQ
VIN
PVIN1
BOOT1
SW1
VOUT1
INV1
PVIN2
VREFIN
BOOT2
SW2
VOUT2
INV2
V DDQ
V TT
VDDQ
Termination
Resistors
COMP1
PGND1
VDDI
COMP2
VREFOUT
PGND2
V IN
DDR Memory
Chipset
V REF
Memory Bus
DDR Memory
Controller
FREQ
PG
ILIM1
GND
STBY
SD
MCU
Figure 1. 34716 Simplified Application Diagram
* This document contains certain information on a new product. ?
Specifications and information herein are subject to change without notice.
? Freescale Semiconductor, Inc., 2007-2012. All rights reserved.
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