MAX8804 MAXIM [Maxim Integrated Products], MAX8804 Datasheet
MAX8804
Available stocks
Related parts for MAX8804
MAX8804 Summary of contents
Page 1
... 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 ...
Page 2
... Default and 1st to 3rd interface pulse = 0V, 4th to 7th interface pulse = 3.6V, 8th to 11th interface pulse 12th to 15th interface pulse 16th to 19th interface pulse 20th to 23rd interface pulse 24th to 27th interface pulse = 0V (MAX8804V/MAX8804W -40° MIN TYP MAX UNITS ...
Page 3
... Pulse width required to program DC charge current Logic-Low Time Pulse width required to program USB charge current SET DC Mode Shutdown Delay V USB SET USB Mode Shutdown Delay V DC SET Internal Pulldown Resistor POK, CHG, USBPWR (USBPWR only for MAX8804Y/MAX8804Z) Logic Output-Voltage Low I POK V POK Logic Output-Current High V USBPWR ...
Page 4
... Thermal-Regulation Gain increase of T Note 1: Devices are 100% production tested at T and characterization. Note 2: V refers to the input for the IC. For the MAX8804V/MAX8804W/MAX8804Y/MAX8804Z with V = 0V. DC Note 3: Guaranteed by undervoltage and overvoltage threshold testing. For charge completion, the input voltage must be greater than 4 ...
Page 5
... INPUT VOLTAGE (V) CHARGE CURRENT vs. BATTERY VOLTAGE (DC CHARGING MODE) 600 500 400 300 200 100 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 BATTERY VOLTAGE (V) _______________________________________________________________________________________ High-Voltage, Dual-Input, USB/AC Typical Operating Characteristics = 0V (MAX8804Y/MAX8804Z only), V USB DETBAT = 5V +25°C, unless otherwise noted.) A 1.0 0.8 0.6 0.4 0.2 0.8 0.6 0.4 0 200 160 120 = 0V or unconnected ...
Page 6
... CHARGE CURRENT vs. AMBIENT TEMPERATURE 700 600 500 400 300 DC CHARGE MODE 650mA 200 -40 -15 10 AMBIENT TEMPERATURE (°C) 6 _______________________________________________________________________________________ Typical Operating Characteristics (continued (MAX8804Y/MAX8804Z only), V USB DETBAT = 5V +25°C, unless otherwise noted.) A CHARGE CURRENT vs. USB INPUT VOLTAGE 120 ...
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 — — EP _______________________________________________________________________________________ High-Voltage, Dual-Input, USB/AC Battery Connection. The IC delivers charging current and monitors battery voltage using BAT. Bypass BAT to GND with a 2.2µ ...
Page 8
... When battery voltage exceeds 2.5V, the charger soft-starts as it enters the fast-charge stage. The MAX8804Y eliminates the prequalification state and enters fast-charge when the battery is inserted. The fast- charge current level is programmed by a simple single- ...
Page 9
... V POK = LOW CHG = HIGH IMPEDANCE Figure 2. Charger State Diagram The MAX8804V/MAX8804W/MAX8804Y/MAX8804Z are designed to charge a single-cell Li+ battery from a DC source voltage between 4.15V and 7V and withstand up to 30V maximum input voltage. The charge current and top-off threshold are programmed with the SET input ...
Page 10
... After the 28th pulse, the MAX8804V/ MAX8804W/MAX8804Y/ MAX8804Z go into the default mode and start a new cycle. See Tables 2, 3, and 4 and Figure 3 to set the desired charging current and top-off threshold. Drive SET high longer than 2ms to disable the DC charging- control circuitry ...
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 eshol PULSE — 15th 16 NUMBER I (mA) — 400 600 CHG Top - ent — ...
Page 12
... USB input is valid. Subsequent low pulses with 1µs to 1ms pulse width on SET program the fast charging cur- rent from 95mA, 380mA, to 475mA for the MAX8804Y/ MAX8804Z and from 380mA, 475mA, to 95mA for the MAX8804V/MAX8804W and then repeat new cycle as shown in Tables 5 and 6. Drive SET low or leave it unconnected longer than 2ms to disable USB charg- ing-control circuitry ...
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 USB mode). This reduces the inrush current on the input supply ...
Page 14
... IC. Connect the battery to BAT as close as possible to the IC to pro- vide accurate battery voltage sensing. Make all high- current traces short and wide to minimize voltage drops. A sample layout is available in the MAX8804Z evaluation kit to speed designs. MAX8804V DC ...
Page 15
... MAX8804V MAX8804W MAX8804Y MAX8804Z + BAT USBPWR POK (DETBAT) TDFN 2mm × 3mm ( ) FOR MAX8804V/MAX8804W ______________________________________________________________________________________ Chip Information PROCESS: BiCMOS Package Information For the latest package outline information www.maxim-ic.com/packages. PACKAGE TYPE PACKAGE CODE 8 TDFN-EP T823+1 DOCUMENT NO. 21-0174 15 ...
Page 16
... Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products Heaney DESCRIPTION Initial release. Added MAX8804W and Battery Pack Detection feature. Added MAX8804V and updated DC Charge Mode section registered trademark of Maxim Integrated Products, Inc. Revision History PAGES CHANGED — ...