MAX8804Y Maxim Integrated Products, MAX8804Y Datasheet - Page 9

• Manufacturer Part Number: MAX8804Y
• Description: USB/AC Adapter Chargers
• Manufacturer: Maxim Integrated Products

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The 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.
Figure 2. Charger State Diagram
I
FAST-CHARGE OPTIONS EXCEPT 95mA
CV MODE TO CC MODE FOR 95mA
FAST-CHARGE OPTION
CHG
ASYNCHRONOUS
FROM ANYWHERE
t
FOR DC MODE
t
FOR USB MODE
SET
SET
> I
= HIGH > 2ms
= LOW > 2ms
TOP-OFF
_______________________________________________________________________________________
V
BAT
Adapter Chargers in 2mm x 3mm TDFN
< 2.5V
+ 57mA FOR ALL
V
MAX8804W/
MAX8804Z
BAT
DEFAULT CHARGE CURRENT
MAX8804W/
MAX8804Z
CHG = HIGH IMPEDANCE
< 2.2V
100% CHARGE CURRENT
CHG = HIGH IMPEDANCE
PREQUALIFICATION
STANDBY MODE
CHARGER = OFF
High-Voltage, Dual-Input, USB/AC
FAST-CHARGE
POK = LOW
CHG = LOW
POK = LOW
CHG = LOW
POK = LOW
V
POK = LOW
FULL BAT
BAT
DC Charging
= 4.2V
t
FOR DC MODE
t
FOR USB MODE
SET
SET
V
I
= LOW > 2ms
= HIGH > 2ms
CHG
BAT
< I
> 2.5V
TOP-OFF
V
AND V
UVLO
IN
< V
The MAX8804W/MAX8804Y/MAX8804Z contain a USB
input that allows operation from a USB port with voltages
between 4.15V and 7V and can withstand up to 16V max-
imum input voltage. Pulsing SET allows programming a
95mA, 380mA, or 475mA maximum charging current
when using the USB input.
> V
IN
BAT
< V
OVP
MAX8804Y
t
FOR DC MODE
t
FOR USB MODE
SET
SET
= LOW > 2ms
= HIGH > 2ms
POK = HIGH IMPEDANCE*
CHG = HIGH IMPEDANCE
CHARGER = OFF
SHUTDOWN
V
OR V
OR V
OR DETBAT = HIGH
IN
< V
*POK = LOW WHEN V
IN
BAT
UVLO
> V
> V
OVP
IN
IN
ASYNCHRONOUS
FROM ANYWHERE
V
OR V
OR V
OR DETBAT = HIGH
> V
IN
USB Charging
< V
OVP
IN
BAT
UVLO
> V
> V
OVP
IN
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