Apple Battery Charger User Manual download pdf (Page 16)

16 Maxim Integrated

USB Battery Charger Detectors

MAX14578E/MAX14578AE

Figure 3 shows D+/D- terminations for a standard USB

host/charging downstream port, an Apple charger, a

Sony charger, and a dedicated charger.

Charger-Enable Control Outputs

The MAX14578E/MAX14578AE feature digital open-drain

outputs—CE0 (MAX14578AE only), CE1, and CE2—to

control an external charger autonomously. See Table 3.

Figure 3. Standard USB Host/Charging Downstream Port, Apple Charger, Sony Charger, and Dedicated Charger

Table 3. Charger-Enable Control Outputs

Note: When CE_FRC = 1, CE[2:0] are set by an I

C command.

X = Don’t care.

LOAD

3.6V

STANDARD USB

HOST CHARGING

DOWNSTREAM PORT

HLPU

300kΩ

HPD

14.25kΩ TO 24.8kΩ

D+

LOAD

3.6V

HLPU

300kΩ

HPD

14.25kΩ TO 24.8kΩ

D-

BUS

5.0V

APPLE CHARGER

ADPPU

75.0kΩ

ADPPD

49.9kΩ

D+

BUS

5.0V

ADMPU

43.2kΩ (FOR 1A)

75.0kΩ (FOR 0.5A)

ADMPD

49.9kΩ

D-

BUS

5.0V

SONY CHARGER

SDPPU

5.1kΩ

SDPPD

10kΩ

D+

BUS

5.0V

SDPPU

5.1kΩ

SDPPD

10kΩ

D-

BUS

5.0V

DEDICATED CHARGER

2MΩ

(MIN)

D+

2MΩ

(MIN)

D-

SUS_LOW

CHG_TYP USB_CPL CE2 CE1 CE0

0 1 X X 1 1 1

1 1 X X 0 0 1

0 0 000 X 1 1 1

1 0 000 X 0 0 1

0 0 110 X 1 1 1

1 0 110 X 0 0 1

X 0 001 0 1 0 0

0 0 001 1 1 1 1

1 0 001 1 0 0 1

X 0 010 X 0 1 0

X 0 011 X 0 1 0

X 0 100 X 1 0 0

X 0 101 X 0 1 0

X 0 111 X 0 0 0

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 22 23

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Apple Battery Charger User Manual Page 16

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