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 overvoltage protection (OVP), and eliminate the reverse-blocking Schottky diode.
The MAX8804V/MAX8804W/MAX8804Z function as stand-alone chargers to control the charging sequence from the prequalification state through fast-charge, topoff 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 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 (active-low CHG), an active-low power-OK indicator (active-low POK), an active-low USB input detection output (active-low USBPWR) on the MAX8804Y/MAX8804Z, and battery pack detection (DETBAT) on the MAX8804V/MAX8804W.
The MAX8804V has 120mA, 140mA, 180mA, and 200mA active-low 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.
Key Features
Applications/Uses
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
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.
* 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:
1-8
of
8
MAX8804V
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
Temp
RoHS/Lead-Free? Materials Analysis
MAX8804VETA+
THIN QFN (Dual);8 pin;
Dwg: 21-0174B (PDF)
Use pkgcode/variation: T823+1*
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