MAX1692 低噪声、5.5V输入、PWM降压型稳压器

概述

The MAX1692 is a low-noise, pulse-width-modulated (PWM), DC-DC step-down converter. It powers logic and transmitters in small wireless systems such as cellular phones, communicating PDAs, and handy-terminals. The device features an internal synchronous rectifier for high efficiency; it requires no external Schottky diode. Excellent noise characteristics and fixed-frequency operation provide easy post-filtering. The MAX1692 is ideally suited for Li-Ion battery applications. It is also useful for +3V or +5V fixed input applications.

The device operates in one of four modes. Forced PWM mode operates at a fixed frequency regardless of the load. Synchronizable PWM mode allows an external switching frequency to control and minimize harmonics. Idle Mode™ (PWM/PFM) extends battery life by switching to a PFM pulse-skipping mode during light loads. Shutdown mode places the device in standby, reducing quiescent supply current to under 0.1µA.

The MAX1692 can deliver over 600mA. The output voltage can be adjusted from 1.25V to V_IN with the input range of +2.7V to +5.5V. Other features of the MAX1692 include high efficiency, low dropout voltage, and a 1.2%-accurate 1.25V reference. It is available in a space-saving 10-pin µMAX package with a height of only 1.11mm.

关键特性

应用/使用

+2.7V to +5.5V Input Range
Adjustable Output from 1.25V to V_IN
600mA Guaranteed Output Current
95% Efficiency
No Schottky Diode Required
85µA Quiescent Current
100% Duty Cycle in Dropout
750kHz Fixed-Frequency PWM Operation
Synchronizable Switching Frequency
Accurate Reference: 1.25V (±1.2%)
Small 10-Pin µMAX Package

	电池供电设备(1节Li+或3节NiMH/NiCd)
	蜂窝电话
	无绳电话
	CPU I/O电源
	笔记本电脑芯片组电源
	PDA与手持终端

Key Specifications: Step-Down Switching Regulators

Part Number

V_IN (min) (V)

V_IN (max) (V)

Min. V_OUT (V)

Max. V_OUT (V)

I_OUT (A)

Output Adj. Method

Operating Current, I_CC (max) (mA)

Number of DC-DC Outputs

Operating Freq. (kHz)

Features

EV-Kit

Package

RoHS Available

Operating Temp. Range (°C)

Price^**

MAX1692

2.7

5.5

1.25

5.5

0.6

Preset
Resistor

0.14

750

•	Adjustable Frequency

•	Current Limit

•	External Synchronization

•	Fixed Frequency/ PWM Operation

•	Internal Power Switches

•

Shutdown

•	Synchronous Rectifier

Yes

uMAX/10

Yes

-40 to +85

$2.29 @ 1k

See All Step-Down Switching Regulators (223)

Key Specifications: Switch-Mode DC-DC Power Supplies

Part Number

Topology

V_IN (min) (V)

V_IN (max) (V)

Number of DC-DC Outputs

Digital/VID Programmed Output

Min. Adjustable V_OUT (V)

Max. Adjustable V_OUT (V)

I_OUT (A)

Operating Current, I_CC (max) (mA)

Operating Freq. (kHz)

Internal Power Switch(es)

Package

Price^**

MAX1692

Step-Down

2.7

5.5

1.25

5.5

0.6

0.14

750

Yes

uMAX/10

$2.29 @ 1k

See All Switch-Mode DC-DC Power Supplies (429)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

可靠性报告


		查询FIT数据：

		可靠性报告： MAX1692EUB.pdf (English only)

定购信息

注：

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型号尾缀：T或T&R = 卷带; + = RoHS/无铅; # = RoHS/无铅豁免权。详细信息请参考：完整的数据资料或型号命名规则。
* “封装代码/变更”提供产品使用的变更信息。注意：型号尾缀中的“+”、“#”和“-”表示器件的RoHS状况，封装图上可能显示不同的尾缀字符。

器件： 1-4 of 4

MAX1692

免费样品

采购

封装：	类型引脚占位面积
	封装图编码/变更 *

温度

RoHS/无铅？
材料分析

MAX1692EUB

uMAX；10引脚；
封装图： 21-0061L (PDF)
使用封装码/变更：U10-2*

-40°C至+85°C

RoHS/无铅：否
材料分析

MAX1692EUB-T

uMAX；10引脚；
封装图： 21-0061L (PDF)
使用封装码/变更：U10-2*

-40°C至+85°C

RoHS/无铅：否
材料分析

MAX1692EUB+

uMAX；10引脚；
封装图： 21-0061L (PDF)
使用封装码/变更：U10+2*

-40°C至+85°C

RoHS/无铅：无铅
材料分析

MAX1692EUB+T

uMAX；10引脚；
封装图： 21-0061L (PDF)
使用封装码/变更：U10+2*

-40°C至+85°C

RoHS/无铅：无铅
材料分析