MAX8808X, MAX8808Y, MAX8808Z 1A Linear Li+ Battery Chargers with Integrated Pass FET and Thermal Regulation in 2mm x 2mm TDFN

Description

The MAX8808X/MAX8808Y/MAX8808Z intelligent, stand-alone constant-current/constant-voltage (CCCV), thermally regulated linear chargers are designed for charging a single-cell lithium-ion (Li+) battery. The MAX8808X/MAX8808Y/MAX8808Z integrate the current- sense circuit, MOS pass element, and thermal-regulation circuitry, and eliminate the reverse-blocking Schottky diode to create the simplest and smallest charging solution for handheld equipment.

The MAX8808X functions as a stand-alone charger to control the charging sequence from the prequalification state through fast-charge, top-off charge, and fullcharge indication. The MAX8808Y and MAX8808Z eliminate 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 maximum charging current without damaging the IC.

The MAX8808X/MAX8808Y/MAX8808Z achieve high flexibility by providing an adjustable fast-charge current with an external resistor. Other features include a battery charging-status indicator (CHG-bar), an active-low control input (EN) for the MAX8808X and MAX8808Z (active-high control input for the MAX8808Y), and an active-low input power-source detection output (ACOK-bar).

The MAX8808X/MAX8808Y/MAX8808Z accept a +4.25V to +15V supply, but disable charging when the input voltage exceeds +7V to protect against unqualified or faulty AC adapters. The MAX8808X/MAX8808Y/ MAX8808Z operate over the extended temperature range (-40°C to +85°C) and are available in a compact 8-pin thermally enhanced 2mm x 2mm TDFN package with 0.8mm (max) height.

Key Features

Applications/Uses

	Stand-Alone Linear 1-Cell Li+ Battery Charger
	No External FET, Reverse Blocking Diode, or Current-Sense Resistor Required
	Programmable Fast-Charge Current (1A max)
	Proprietary Die Temperature Regulation Control (+115°C)
	+4.25V to +15V Input Voltage Range with Input OVP Above +7V
	Charge-Current Monitor for Fuel Gauging
	Low Dropout Voltage—300mV at 500mA
	Input Power-Source Detection Output (ACOK-bar) and Charge-Enable Input (EN-bar or EN)
	Soft-Start Limits Inrush Current
	Charge-Status Output (CHG-bar) for LED or Microprocessor (µP) Interface
	Tiny 2mm x 2mm 8-Pin TDFN Package, 0.8mm (max) Height

	Cell Phones/Cordless Phones
	Charging Cradles and Docks
	Digital Still Cameras and MP3 Players
	Smartphones and PDAs
	USB Appliances

Key Specifications: Battery Chargers

Part Number

Cell Chemistry

Number of Lithium-Ion cells

Protected V_IN (max) (V)

Charging V_IN (max) (V)

Internal FET/Transistor

Charger (V)

Charge Rate Set by

Max. Charge Current (A)

Charge Termination

Charge Regulation

Features

EV-Kit

Package

RoHS Available

Operating Temp. Range (°C)

Price^**

MAX8808

Li-Ion
Li-Polymer

6.5

Yes

4.2

Resistor

External Control

Linear

•	Stand Alone

•	Thermal Die Regulation

•

USB Input

Yes

THIN QFN (Dual)/8

Yes

-40 to +85

$1.40 @ 1k

See All Battery Chargers (60)

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.

Reliability Reports


		Show FIT data for:

		Reliability Report: MAX8808xETA.pdf

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
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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: 1-13 of 13

MAX8808

Free
Sample

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Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX8808ZETA+T