Rainbow Electronics MAX8804Z - Manual (Page 10)

MAX8804Y/MAX8804Z
USB Charge Mode
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-
rent from 95mA, 380mA, to 475mA and then repeat
new cycle as shown in Table 3. Drive SET low or leave
it unconnected longer than 2ms to disable USB charg-
ing-control circuitry.
High-Voltage, Dual-Input, USB/AC
Adapter Chargers in 2mm x 3mm TDFN
10 ______________________________________________________________________________________
Table 3. USB Charging Current
Programming by Series Pulses
PULSE NUMBER DEFAULT 1st 2nd 3rd
I CHG (mA) 95 380 475 95
Top-Off Current
Threshold (mA)
80 80 80 80
DC
POK
SET
1 2 3 4 24 25 26 27 28
80mA
90mA
100mA
70mA
80mA 80mA
90mA
100mA
70mA
80mA
0mA
500mA
550mA
700mA
500mA
0mA I CHG
TOP-OFF
CURRENT
THRESHOLD
t SOFTSTART
t HIGH
> 2ms
2ms
DELAY
Figure 3. DC Charging Current and Top-Off Threshold Programming