MAX8804Z Maxim Integrated Products, MAX8804Z Datasheet - Page 9

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

Table 1. SET Truth Table
Table 2. DC Charging Current Programming by Series Pulses
SET is a logic input that sets DC/USB charging mode
and charging current. Drive SET low or leave it uncon-
nected to enable DC charging mode. Drive SET high to
enable USB charging mode (see Table 1). SET can
also be driven by series pulses to program the charg-
ing current in both DC and USB mode.
I
Top - O ff C ur r ent
Thr eshol d ( m A)
I
Top - O ff C ur r ent
Thr eshol d ( m A)
CHG
CHG
SET
NUMBER
NUMBER
0
0
0
0
1
1
1
1
PULSE
PULSE
(mA)
(mA)
Invalid
Invalid
Invalid
Invalid
Valid
Valid
Valid
Valid
V
DC
DEFAULT
500
_______________________________________________________________________________________
80
—
—
—
Invalid
Invalid
Invalid
Invalid
V
Valid
Valid
Valid
Valid
Adapter Chargers in 2mm x 3mm TDFN
USB
Charging Current Setting
15th
500
450
1st
90
70
Off
Off
DC charging mode enabled,
USB charging mode disabled
DC charging mode enabled,
USB charging mode disabled
Off
DC charging mode disabled,
USB charging mode enabled
Off
Off
DC/USB Mode and
CHARGER STATUS
16th
2nd
500
100
400
80
High-Voltage, Dual-Input, USB/AC
17th
500
400
3rd
70
90
18th
550
400
100
4th
80
19th
550
400
5th
90
70
20th
6th
550
100
650
80
Drive SET low or leave it unconnected to enable DC
charging mode. Subsequent pulses on SET program the
charging current and the top-off threshold. There are
seven fast-charge current options and four top-off thresh-
old options. Default fast-charge current and top-off
threshold current are 500mA and 80mA. Pulse SET high
(1µs to 1ms pulse width) subsequently to realize charging
current and top-off threshold programming and transition.
After the 28th pulse, the MAX8804Y/MAX8804Z go into
the default mode and start a new cycle. See Table 2 and
Figure 3 to set the desired charging current and top-off
threshold. Drive SET high longer than 2ms to disable DC
charging-control circuitry.
21st
550
650
7th
70
90
2 2 n d
600
650
100
8th
80
2 3 r d
600
650
9th
90
70
10th
24th
600
100
700
80
11th
25th
600
700
70
90
DC Charge Mode
12th
26th
450
700
100
80
27th
13th
450
700
90
70
14th
28th
450
100
500
80
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