MAX8804WETA+T Maxim Integrated Products, MAX8804WETA+T Datasheet

IC DUAL-IN ADPTR CHRGR 8-TDFN-EP

MAX8804WETA+T

Manufacturer Part Number
MAX8804WETA+T
Description
IC DUAL-IN ADPTR CHRGR 8-TDFN-EP
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX8804WETAT.pdf (16 pages)

Specifications of MAX8804WETA+T

Function
Charge Management
Battery Type
Lithium-Ion (Li-Ion)
Voltage - Supply
0 V ~ 28 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-TDFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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.
19-0785; Rev 2; 4/08
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
________________________________________________________________ Maxim Integrated Products
Adapter Chargers in 2mm x 3mm TDFN
General Description
MP3 Players
Other Handheld Devices
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
♦ Power-Present and Charger-Status Outputs
♦ No Prequalification Charge (MAX8804Y)
♦ Tiny 2mm x 3mm Thermally Enhanced TDFN
* 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.
MAX8804VETA+
MAX8804WETA+
MAX8804YETA+
MAX8804ZETA+
Resistor Required
Top-Off Threshold
(MAX8804V/MAX8804W)
Package
ADAPTER
AND PROGRAMMING
PORT
USB
ENABLE/DISABLE
AC
PART
1μF
1μF
Typical Application Circuit
NOTE: () FOR MAX8804V/MAX8804W, < > FOR MAX8804Y/MAX8804Z
DC
GND
USB
SET
MAX8804W
Ordering Information
MAX8804V
MAX8804Y
MAX8804Z
PIN-
PACKAGE
8 TDFN-EP*
8 TDFN-EP*
8 TDFN-EP*
8 TDFN-EP*
<USBPWR>
(DETBAT)
+3.3V
CHG
POK
BAT
2.2μF
Features
MARK
TOP
AAQ
AAD
AAC
AAP
Li+
1

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MAX8804WETA+T Summary of contents

Page 1

... Digital Cameras Other Handheld Devices Portable Media Players Pin Configuration appears at end of data sheet. ________________________________________________________________ Maxim Integrated Products 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. High-Voltage, Dual-Input, USB/AC ♦ Complete Chargers for Single-Cell Li+ Battery ♦ ...

Page 2

High-Voltage, Dual-Input, USB/AC Adapter Chargers in 2mm x 3mm TDFN ABSOLUTE MAXIMUM RATINGS DC to GND .............................................................-0.3V to +30V USB to GND ...........................................................-0.3V to +16V BAT, CHG, SET, POK, USBPWR, DETBAT to GND...............................................................-0.3V to +5.5V Continuous Power Dissipation (T = ...

Page 3

Adapter Chargers in 2mm x 3mm TDFN ELECTRICAL CHARACTERISTICS (continued) (( SET USB +85°C, unless otherwise noted.) (Note 1) PARAMETER V USB V BAT DC Charging Current rising edge ...

Page 4

High-Voltage, Dual-Input, USB/AC Adapter Chargers in 2mm x 3mm TDFN ELECTRICAL CHARACTERISTICS (continued) (( SET USB +85°C, unless otherwise noted.) (Note 1) PARAMETER CHG CHG Top-Off Threshold I BAT ...

Page 5

Adapter Chargers in 2mm x 3mm TDFN (V = 3.6V; DC charge mode 5V, V BAT DC charge mode 5V 0V, V USB DC SET SUPPLY CURRENT vs. INPUT VOLTAGE (DC CHARGING MODE) 1.0 ...

Page 6

High-Voltage, Dual-Input, USB/AC Adapter Chargers in 2mm x 3mm TDFN (V = 3.6V; DC charge mode 5V, V BAT DC charge mode 5V 0V, V USB DC SET CHARGE CURRENT vs. DC INPUT VOLTAGE ...

Page 7

Adapter Chargers in 2mm x 3mm TDFN PIN NAME MAX8804V/ MAX8804Y/ MAX8804W MAX8804Z 1 1 BAT 2 — DETBAT USBPWR — 2 POK USB CHG SET 8 8 GND ...

Page 8

High-Voltage, Dual-Input, USB/AC Adapter Chargers in 2mm x 3mm TDFN 4.15V TO 30V DC 4.15V TO 16V USB DC POK USB POK REF Figure 1. Functional Diagram Detailed Description The MAX8804V/MAX8804W/MAX8804Y/MAX8804Z dual- input linear battery chargers use voltage, current, and ...

Page 9

Adapter Chargers in 2mm x 3mm TDFN ASYNCHRONOUS FROM ANYWHERE t = HIGH > 2ms SET FOR DC MODE STANDBY MODE t = LOW > 2ms SET CHARGER = OFF FOR USB MODE POK = LOW CHG = HIGH IMPEDANCE ...

Page 10

High-Voltage, Dual-Input, USB/AC Adapter Chargers in 2mm x 3mm TDFN Table 1. SET Truth Table SET V V CHARGER STATUS DC USB 0 Invalid Invalid Off 0 Invalid Valid Off DC charging mode enabled, 0 Valid Invalid USB charging mode ...

Page 11

Adapter Chargers in 2mm x 3mm TDFN Table 4. MAX8804V DC Charging Current Programming by Series Pulses PULSE DEFAULT 1st 2nd NUMBER I (mA) 450 450 450 CHG Top - ent 120 140 180 Thr ...

Page 12

High-Voltage, Dual-Input, USB/AC Adapter Chargers in 2mm x 3mm TDFN Drive SET high to enable USB charging mode when the USB input is valid. Subsequent low pulses with 1µs to 1ms pulse width on SET program the fast charging cur- ...

Page 13

Adapter Chargers in 2mm x 3mm TDFN The soft-start circuitry activates when entering fast- charge mode. In the MAX8804Y, soft-start is entered directly after being enabled, and the charging current ramps up in 250µs from 0 to 500mA (95mA in ...

Page 14

High-Voltage, Dual-Input, USB/AC Adapter Chargers in 2mm x 3mm TDFN V > 4. IN(MIN) CHARGE(MAX) where R is the input-to-BAT resistance (typically ON 0.55Ω for DC or 0.65Ω for USB). Failure to meet this requirement results in an ...

Page 15

High-Voltage, Dual-Input, USB/AC Adapter Chargers in 2mm x 3mm TDFN Pin Configuration TOP VIEW GND SET CHG USB MAX8804V MAX8804W MAX8804Y MAX8804Z + BAT USBPWR POK (DETBAT) TDFN 2mm × 3mm ...

Page 16

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products ...

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