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34727

更新时间: 2024-02-28 04:38:59
品牌 Logo 应用领域
飞思卡尔 - FREESCALE 稳压器射频微波衰减器
页数 文件大小 规格书
19页 1281K
描述
600mA High Efficiency Low Quiescent Current Synchronous Buck Regulator With Z-mode

34727 技术参数

生命周期:ObsoleteReach Compliance Code:unknown
风险等级:5.54Is Samacsys:N
最大输入功率 (CW):26.99 dBm最大插入损耗:4 dB
最大工作频率:6000 MHz最小工作频率:2000 MHz
最高工作温度:110 °C最低工作温度:-54 °C
射频/微波设备类型:VARIABLE ATTENUATOR最大电压驻波比:2
Base Number Matches:1

34727 数据手册

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Document Number: 34727  
Rev. 1.0, 5/2008  
Freescale Semiconductor  
Advance Information  
600mA High Efficiency Low  
Quiescent Current Synchronous  
Buck Regulator With Z-mode  
34727  
The 34727 is a high efficiency, low quiescent current (IQ),  
synchronous buck regulator, implementing Freescale’s innovative  
Z-mode architecture. Freescale’s Z-mode architecture greatly  
improves the ripple performance during light load currents, but still  
maintains a low quiescent current of 65µA, at no load in “Sleepy” Z-  
mode.  
POWER MANAGEMENT IC  
The 34727 accepts an input voltage in the range of 2.7 to 5.5V,  
making it ideally suited for single cell Li-Ion based applications. Factory  
preset output voltages, ranging from 0.8 to 3.3V, reduce the number of  
required auxiliary components. The part is able to provide 600mA of  
continuous load current across the input and the output voltage ranges.  
Bottom View  
FC SUFFIX (PB-FREE)  
98ASA10787D  
8-PIN UDFN  
2X2  
The 34727 switches at 2.0MHz to allow the use of small surface  
mount inductors and capacitors, to save precious board space.  
The 34727 is available in the small, space saving, and low cost, 2x2  
UDFN-8 packages. The part is guaranteed for operation over the -25°C  
to +85°C temperature range.  
ORDERING INFORMATION  
Temperature  
Device  
Package  
Range (T )  
A
MC34727AFC/R2  
MC34727BFC/R2  
MC34727CFC/R2  
Features  
-25°C to 85°C  
8-UDFN  
• 94% peak efficiency  
• 2.0MHz switching frequency  
• Automatic transition to energy saving light load Z-mode (low ripple)  
• 2.7V to 5.5V input voltage range  
• Fixed output voltage options from 0.8V to 3.3V  
• 65µA quiescent current during sleepy Z-mode  
• 600mA maximum continuous output current  
• Internal 2.0ms soft start  
• Thermal and over-current protection  
• 0.1µA quiescent current in shutdown (disabled)  
• Ultra thin 2x2 UDFN package  
• Pb-free packaging designated by suffix code FC  
34727  
L1  
2.7V ~ 5.5V  
0.8 - 3.3V *  
600mA  
VIN  
EN  
SW  
FB  
CIN  
COUT  
ON  
OFF  
GND  
*Programmable  
See table 1  
Figure 1. 34727 Typical Operating Circuit  
* This document contains certain information on a new product.  
Specifications and information herein are subject to change without notice.  
© Freescale Semiconductor, Inc., 2008. All rights reserved.  

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