MAX8506, MAX8507, MAX8508 带有75mΩ旁路FET的PWM降压型DC-DC转换器，适用于WCDMA和cdmaOne手机

快速浏览

技术文档

定购信息

更多信息

所有内容

概述

完整的数据资料 (PDF, 628kB)
英文

下载

MAX8506/MAX8507/MAX8508集成了一个PWM降压型DC-DC转换器和一个75mΩ (典型)旁路FET，为WCDMA和cdmaOne™手机中的功放供电。电源电压范围为2.6V至5.5V，输出电流保证600mA。1MHz的PWM开关频率允许选用小型的外部元件。

MAX8506和MAX8507为动态受控，以提供从0.4V至3.4V的可变输出电压。MAX8508为外部可编程，用于提供0.75V至3.4V的固定输出。对于所有型号，数字逻辑允许采用高功率(HP)旁路模式，即直接将输出连接至电池。因此，所设计的MAX8506/MAX8507/MAX8508在输出电压和负载电流满量程变化时，其建立时间小于30µs。

MAX8506/MAX8507/MAX8508采用4mm x 4mm、16引脚薄型QFN封装(最高0.8mm)。

关键特性

应用/使用

集成的75mΩ (典型)旁路FET
600mA负载时38mV压差
效率达94%
动态调整输出范围0.4V至3.4V (MAX8506, MAX8507)
外部固定的输出范围0.75V至3.4V (MAX8508)
1MHz固定频率PWM转换
保证600mA输出电流
0.1µA的关断电流(典型)
16引脚薄型QFN封装(4mm x 4mm、最高0.8mm)

	WCDMA/NCDMA蜂窝电话
	无线调制解调器
	无线PDA、掌上电脑和笔记本电脑

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^**

MAX8506

2.6

5.5

0.4

3.5

0.6

Dyn. REF In
Resistor

0.25

1000

•	Adjustable Frequency

•	Current Limit

•	Fixed Frequency/ PWM Operation

•	Internal Power Switches

•

Shutdown

•	Synchronous Rectifier

•	Voltage or PWM Controllable Output

Yes

THIN QFN/16

Yes

-40 to +85

$2.05 @ 1k

MAX8507

0.4

Dyn. REF In
Resistor

•	Adjustable Frequency

•	Current Limit

•	Fixed Frequency/ PWM Operation

•	Internal Power Switches

•

Shutdown

•	Synchronous Rectifier

•	Voltage or PWM Controllable Output

$2.05 @ 1k

MAX8508

0.75

Resistor

•	Adjustable Frequency

•	Current Limit

•	Fixed Frequency/ PWM Operation

•	Internal Power Switches

•

Shutdown

•	Synchronous Rectifier

$2.05 @ 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^**

MAX8506

Step-Down

2.6

5.5

0.4

3.5

0.6

0.25

1000

Yes

THIN QFN/16

$2.05 @ 1k

MAX8507

0.4

$2.05 @ 1k

MAX8508

0.75

$2.05 @ 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.