Maxim > Products > Power and Battery Management > MAX8667, MAX8668

MAX8667, MAX8668

1.5MHz Dual Step-Down DC-DC Converters with Dual LDOs and Individual Enables

Save Power and Board Space Using the Industry's First Dual Step-Down DC-DC Converters with Dual Low-Input LDOs

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX8667/MAX8668 dual step-down converters with dual low-dropout (LDO) linear regulators are intended to power low-voltage microprocessors or DSPs in portable devices. They feature high efficiency with small external component size. The step-down converters are adjustable from 0.6V to 3.3V (MAX8668) or factory preset (MAX8667) with guaranteed output current of 600mA for OUT1 and 1200mA for OUT2. The 1.5MHz hysteretic-PWM control scheme allows for tiny external components and reduces no-load operating current to 100µA with all outputs enabled. Dual low-quiescent-current, low-noise LDOs operate down to 1.7V supply voltage. The MAX8667/MAX8668 have individual enables for each output, maximizing flexibility.

The MAX8667/MAX8668 are available in the space-saving, 3mm x 3mm, 16-pin thin QFN package.

Data Sheet

Download	Rev 1	(PDF, 396kB)
E-Mail

An evaluation kit is available: MAX8668EVKIT

Key Features

Tiny, Thin QFN 3mm x 3mm Package
Individual Enables
Step-Down Converters
- 600mA Guaranteed Output Current on OUT1
- 1200mA Guaranteed Output Current on OUT2
- Tiny Size 2.2µH Chip Inductor (0805)
- Output Voltage from 0.6V to 3.3V (MAX8668)
- Ultra-Fast Line and Load Transients
- Low 25µA Supply Current Each
LDOs
- 300mA Guaranteed
- Low 1.7V Minimum Supply Voltage
- Low Output Noise

Applications/Uses

Cell Phones/Smartphones
Digital Cameras, Camcorders
Handheld Instruments
PCMCIA Cards
PDA and Palmtop Computers
Portable MP3 and DVD Players

Key Specifications:

Multifunction PMICs

Part Number

Primary Topology

Monitor/Control Features

DC-DC/Power Features

V_IN
(V)

V_OUT
(V)

Max. I_OUT
(A)

Oper. Freq.
(kHz)

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

min

max

min

max

≥

≤

max w/pins

See Notes

MAX8667

Step-Down

Shutdown

Current Limit

Fixed Freq./PWM

Internal Pwr. FETs

Soft Start

Sync. Rectifier

2.6

5.5

0.725

3.3

1.2

1500

TQFN/16

9.6

MAX8668

0.6

TQFN/16

See All Multifunction PMICs (96)

Pricing 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.

Diagram

Typical Operating Circuit

Application Notes

Tutorial 4671

Improve Sensor Performance and SNR in Pulse Oximeter Designs

Product Guides

Communications (PDF)

Reliability Reports

Reliability Report:	MAX8668.pdf MAX8667.pdf
Show FIT data for:

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX8667ETEAA+			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8667ETEAA+T			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8667ETEAB+			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8667ETEAB+T			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8667ETEAC+			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8667ETEAC+T			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8667ETECQ+			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8667ETECQ+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX8667ETEHR+			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8667ETEHR+T			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX8667ETEJS+			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8667ETEJS+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX8668ETEA+			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8668ETEA+T			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8668ETEP+			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8668ETEP+T			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8668ETEQ+			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8668ETEQ+T			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8668ETET+			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8668ETET+T			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX8668ETEU+			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8668ETEU+T			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8668ETEV+			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8668ETEV+T			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8668ETEW+			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8668ETEW+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX8668ETEX+			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX8668ETEX+T			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

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; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product 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.

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Evaluation Kits

MAX8668EVKIT

MAX8668 Evaluation Kit

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