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MAX8804VETA

Description
High-Voltage, Dual-Input, USB/AC Adapter Chargers in 2mm x 3mm TDFN
File Size195KB,16 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX8804VETA Overview

High-Voltage, Dual-Input, USB/AC Adapter Chargers in 2mm x 3mm TDFN

19-0785; Rev 2; 4/08
KIT
ATION
EVALU
BLE
AVAILA
High-Voltage, Dual-Input, USB/AC
Adapter Chargers in 2mm x 3mm TDFN
General Description
Features
Complete Chargers for Single-Cell Li+ Battery
Dual-Input, 30V AC Adapter/16V USB
No External FET, Blocking Diode, or Sense
Resistor Required
Automatic USB/AC Adapter Input Selection
Easy Programmable Fast-Charge Current and
Top-Off Threshold
Proprietary Die Temperature Regulation Control
±5% Fast-Charge Current-Limit Accuracy
Battery Pack Detection Input
(MAX8804V/MAX8804W)
Power-Present and Charger-Status Outputs
No Prequalification Charge (MAX8804Y)
Tiny 2mm x 3mm Thermally Enhanced TDFN
Package
MAX8804V/MAX8804W/MAX8804Y/MAX8804Z
The MAX8804V/MAX8804W/MAX8804Y/MAX8804Z
intelligent, dual-input, stand-alone, constant-current,
constant-voltage (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 overvolt-
age protection (OVP), and eliminate the reverse-block-
ing Schottky diode.
The MAX8804V/MAX8804W/MAX8804Z function as
stand-alone chargers to control the charging sequence
from the prequalification 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 cir-
cuitry limits the die temperature when fast-charging or
while exposed to high ambient temperatures, allowing
maximum charging current without damaging the IC.
The MAX8804V/MAX8804W/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 current is programmable from 400mA to 700mA in
50mA steps through a serial interface. The USB charge
current 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
MAX8804V/MAX8804W.
The MAX8804V has 120mA, 140mA, 180mA, and
200mA
CHG
top-off threshold settings, while the
MAX8804W/MAX8804Y/MAX8804Z have 70mA, 80mA,
90mA, and 100mA.
The MAX8804V/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 MAX8804V/
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.
Ordering Information
PART
MAX8804VETA+
MAX8804WETA+
MAX8804YETA+
MAX8804ZETA+
PIN-
PACKAGE
8 TDFN-EP*
8 TDFN-EP*
8 TDFN-EP*
8 TDFN-EP*
TOP
MARK
AAQ
AAP
AAD
AAC
*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.
Typical Application Circuit
+3.3V
AC
ADAPTER
1μF
DC
GND
USB
PORT
MAX8804V
MAX8804W
MAX8804Y
MAX8804Z
CHG
POK
USB
1μF
<USBPWR>
(DETBAT)
BAT
2.2μF
Li+
Applications
Cell Phones/Smartphones
Digital Cameras
Portable Media Players
Pin Configuration appears at end of data sheet.
MP3 Players
Other Handheld Devices
ENABLE/DISABLE
AND PROGRAMMING
SET
NOTE: () FOR MAX8804V/MAX8804W, < > FOR MAX8804Y/MAX8804Z
________________________________________________________________
Maxim Integrated Products
1
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.

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