MAX8804Z Maxim Integrated Products, MAX8804Z Datasheet - Page 6

• Manufacturer Part Number: MAX8804Z
• Description: (MAX8804Y/Z) USB/AC Adapter Chargers
• Manufacturer: Maxim Integrated Products

High-Voltage, Dual-Input, USB/AC
Adapter Chargers in 2mm x 3mm TDFN
(V
5V; T
6
BAT
4.210
4.204
4.198
4.192
4.186
4.180
PIN
_______________________________________________________________________________________
—
1
2
3
4
5
6
7
8
A
= 3.6V; DC charge mode: V
-40
= +25°C, unless otherwise noted.)
BATTERY REGULATION VOLTAGE
vs. AMBIENT TEMPERATURE
USBPWR
-15
NAME
AMBIENT TEMPERATURE (°C)
CHG
GND
POK
BAT
USB
SET
DC
EP
10
USB MODE
DC MODE
Battery Connection. The IC delivers charging current and monitors battery voltage using BAT. Bypass BAT to
GND with a 2.2µF or larger ceramic capacitor. BAT is high impedance when the IC is disabled.
USB Power Status Output. USBPWR is internally pulled low if a valid voltage is present at USB, otherwise it is
high impedance. USBPWR circuitry is active regardless of SET and charger on/off status.
Power-OK Monitor. POK is an open-drain output that is internally pulled low when a valid charging source is
detected at either DC or USB. POK is high impedance when both input voltages are less than V
DC Input Supply. Connect DC to a 4.15V to 7V charging source. Bypass DC to GND with a 1µF or larger
ceramic capacitor. DC takes priority over USB when both are valid.
USB Input Source. Connect USB to a USB port. Bypass USB to GND with a 1µF or larger ceramic capacitor.
Charging-Status Output. CHG is internally pulled low when the battery is being charged. CHG is high
impedance when the charger is in top-off mode or disabled.
Enable/Disable, Charging Current, and Top-Off Threshold Set Input. Drive SET low to enable DC charge
mode and drive high to enable USB charge mode. If both DC and USB inputs are present, SET is used for
the DC charge mode only and USB charge is disabled. SET is also used for programming the charge current
and top-off threshold. See the DC/USB Mode and Charging Current Setting section for details.
Ground
Exposed Paddle. Connect to the GND plane for optimum thermal dissipation.
35
60
DC
= 5V, V
85
USB
700
600
500
400
300
200
Typical Operating Characteristics (continued)
= 0V, V
-40
DC CHARGE MODE 650mA
vs. AMBIENT TEMPERATURE
SET
-15
AMBIENT TEMPERATURE (°C)
= 0V or unconnected; USB charge mode: V
CHARGE CURRENT
10
35
FUNCTION
60
85
4.30
4.25
4.20
4.15
4.10
0
BATTERY REGULATION VOLTAGE
100
USB
550mA CHARGE-CURRENT SETTING
Pin Description
200
vs. LOAD CURRENT
LOAD CURRENT (mA)
= 5V, V
300
400
DC
UVLO
= 0V, V
500
or V
600
SET
BAT
700
=
.