MAX8804Y Maxim Integrated Products, MAX8804Y Datasheet

MAX8804Y

Manufacturer Part Number

MAX8804Y

Description

USB/AC Adapter Chargers

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX8804Y.pdf (17 pages)

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The MAX8804W/MAX8804Y/MAX8804Z intelligent,

dual-input, stand-alone, constant-current, constant-volt-

age (CCCV), thermally regulated linear chargers are

designed for a single-cell lithium-ion (Li+) battery. They

integrate the current-sense circuit, MOS pass element,

thermal-regulation circuitry, and overvoltage protection

(OVP), and eliminate the reverse-blocking Schottky

diode to create a simple and small charging solution for

handheld equipment.

The MAX8804W/MAX8804Z function as stand-alone

chargers to control the charging sequence from the pre-

qualification state through fast-charge, top-off charge,

and full-charge indication. The MAX8804Y eliminates the

prequalification state to allow startup into a load without

a battery. Proprietary thermal-regulation circuitry limits

the die temperature when fast-charging or while

exposed to high ambient temperatures, allowing maxi-

mum charging current without damaging the IC.

The MAX8804Y/MAX8804Z achieve high flexibility by

providing an adjustable DC/USB fast-charge current

through a simple single-wire interface (SET input). The

chargers automatically select between either a USB or

AC adapter input source. The AC adapter charge cur-

rent is programmable from 400mA to 700mA in 50mA

steps through a serial interface. The USB charge cur-

rent is programmable to 95mA, 380mA, or 475mA

through the same interface. Other features include an

active-low battery charging-status indicator (CHG), an

active-low power-OK indicator (POK), an active-low

USB input detection output (USBPWR) on the

MAX8804Y/MAX8804Z, and battery pack detection

(DETBAT) on the MAX8804W.

The MAX8804W/MAX8804Y/MAX8804Z accept a 4.15V

to 30V DC source voltage or a 4.15V to 16V USB input

voltage, but disable charging when either input voltage

exceeds 7.5V to protect against unqualified or faulty

input sources. The MAX8804W/MAX8804Y/MAX8804Z

operate over the extended temperature range (-40°C to

+85°C) and are available in a tiny 8-pin thermally

enhanced 2mm x 3mm TDFN package.

19-0785; Rev 1; 10/07

Pin Configuration appears at end of data sheet.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim's website at www.maxim-ic.com.

Cell Phones/Smartphones

Digital Cameras

Portable Media Players

MP3 Players

Other Handheld Devices

________________________________________________________________ Maxim Integrated Products

Adapter Chargers in 2mm x 3mm TDFN

General Description

High-Voltage, Dual-Input, USB/AC

Applications

♦ Complete Chargers for Single-Cell Li+ Battery

♦ Dual-Input, 30V AC Adapter/16V USB

♦ No External FET, Blocking Diode, or Sense

♦ Automatic USB/AC Adapter Input Selection

♦ Easy Programmable Fast-Charge Current and

♦ Proprietary Die Temperature Regulation Control

♦ ±5% Fast-Charge Current-Limit Accuracy

♦ Battery Pack Detection Input (MAX8804W)

♦ Power-Present and Charger-Status Outputs

♦ No Prequalification Charge (MAX8804Y)

♦ Tiny 2mm x 3mm Thermally Enhanced TDFN

♦ USB Charging Protected by US Patent #6,507,172

* EP = Exposed paddle.

+ Denotes a lead-free package.

Note: All devices are specified to operate over the -40°C to

+85°C operating temperature range.

MAX8804WETA+

MAX8804YETA+

MAX8804ZETA+

ADAPTER

Resistor Required

Top-Off Threshold

Package

AND PROGRAMMING

PORT

ENABLE/DISABLE

USB

PART

1μF

Typical Application Circuit

GND

USB

SET

PIN-

PACKAGE

8 TDFN-EP*

NOTE: () FOR MAX8804W, < > FOR MAX8804Y/MAX8804Z

MAX8804W

Ordering Information

MAX8804Y

MAX8804Z

(DETBAT)

+3.3V

CHG

POK

BAT

T823+1

CODE

PKG

2.2μF

Features

MARK

TOP

AAD

AAC

AAP

Li+

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