PWM Step-Down DC-DC Converters with 75m Bypass FET for WCDMA and cdmaOne Handsets

PWM Step-Down DC-DC Converters with 75m Bypass FET for WCDMA and cdmaOne™ Handsets

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Status

Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 628kB) Download   E-Mail

Description

The MAX8506/MAX8507/MAX8508 integrate a PWM step-down DC-DC regulator and a 75mΩ (typ) bypass FET to power the PA in WCDMA and cdmaOne™ cell phones. The supply voltage range is from 2.6V to 5.5V, and the guaranteed output current is 600mA. One megahertz PWM switching allows for small external components. The MAX8506 and MAX8507 are dynamically controlled to provide varying output voltages from 0.4V to 3.4V. The MAX8508 is externally programmed for fixed 0.75V to 3.4V output. Digital logic enables a high-power (HP) bypass mode that connects the output directly to the battery for all versions. The MAX8506/MAX8507/MAX8508 are designed so the output settles in less than 30µs for a full-scale change in output voltage and load current. The MAX8506/MAX8507/MAX8508 are offered in 16-pin 4mm x 4mm thin QFN packages (0.8mm max height).

An evaluation kit is available:  MAX8506EVKIT  

Key Features		Applications/Uses
Integrated 75mΩ (typ) Bypass FET 38mV Dropout at 600mA Load Up to 94% Efficiency Dynamically Adjustable Output from 0.4V to 3.4V (MAX8506, MAX8507) Externally Fixed Output from 0.75V to 3.4V (MAX8508) 1MHz Fixed-Frequency PWM Switching 600mA Guaranteed Output Current Shutdown Mode 0.1µA (typ) 16-Pin Thin QFN (4mm x 4mm, 0.8mm max Height)		WCDMA/NCDMA Cell Phones Wireless Modems Wireless PDAs, Palmtops, and Notebook Computers

Diagram

Typical Operating Circuit

Application Notes

Application Note 3434: RF Power Reduction for CDMA/WCDMA Cellular Phones - MAX8506, MAX8507, MAX8508

Evaluation Kits

MAX8506EVKIT

Reliability Reports

Show FIT data for: MAX8506 MAX8507 MAX8508 Request Reliability Report for: MAX8506 MAX8507 MAX8508

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-12 of 12

MAX8506	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX8506ETE+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX8506ETE+			Active	TQFN;16 pin;17 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8506ETE			Active	TQFN;16 pin;17 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX8506ETE-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX8507	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX8507ETE+T			Active	TQFN;16 pin;17 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8507ETE+			Active	TQFN;16 pin;17 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8507ETE			Active	TQFN;16 pin;17 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX8507ETE-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX8508	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX8508ETE+			Active	TQFN;16 pin;17 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8508ETE+T			Active	TQFN;16 pin;17 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8508ETE			Active	TQFN;16 pin;17 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX8508ETE-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet

More Information

New Product Press Release 2004-02-23  Product Ad: MAX8506

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