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MAX14600–MAX14605

USB Host Charger Identification/Adapter Emulators

Detailed Description

The MAX14600–MAX14605 adapter emulator family has

Hi-Speed USB analog switches that support USB hosts

to identify the USB port as a charger port when the USB

host is in a low-power mode and cannot enumerate USB

devices. These Hi-Speed USB switches feature low 4pF

(typ) on-capacitance and low 4I (typ) on-resistance. DP

and DM can handle signals between 0V and 6V with any

supply voltage.

Resistor-Dividers

The MAX14600–MAX14605 family features an internal

resistor-divider for biasing data lines to provide sup-

MAX14605 family is not operated with the resistor-divider,

the device disconnects the resistor-dividers from the sup-

ply voltage to minimize supply current requirements. The

resistor-dividers are not connected in pass-through mode.

Switch Control

The MAX14600–MAX14605 family features dual digi-

tal inputs, CB0 and CB1, for mode selection. For the

MAX14600/MAX14601/MAX14603/MAX14604, connect

CB0 and CB1 to a logic-level low voltage for autode-

tection charger mode (AM). Change only CB1 to a

logic-level high for forced dedicated charger mode (FM).

Change only CB1 to a logic-level low for normal high-

speed pass-through mode (PM). Connect CB0 and CB1

to a logic-level high for high-speed pass-through mode

with CDP emulation (CM). See Table 1.

In CDP emulation mode, the peripheral device with

CDP detection capability draws the charging current

up to 1.5A immediately without USB enumeration. The

MAX14602/MAX14605 have CB0 digital input control

only (Table 2). The MAX14602/MAX14605 are pin-to-pin

compatible with the MAX14566E, and CB0 and CB1

are connected together internally, which makes these

devices easy upgrades for CDP emulation.

Table 1. Digital Input State for MAX14600/MAX14601/MAX14603/MAX14604

Table 2. Digital Input State for MAX14602/MAX14605

CB0

CB1

CHARGER/USB

MODE

STATUS

0

0

Charger

AM

Autodetection Charger Mode

0

1

Charger

FM

Force Dedicated Charger Mode: DP/DM shorted.

1

0

USB

PM

USB Pass-Through Mode: DP/DM connected to TDP/TDM.

1

1

USB

CM

USB Pass-Through Mode with CDP Emulation: Auto connects DP/DM to

TDP/TDM depending on CDP status.

CB0

CHARGER/USB

MODE

STATUS

0

Charger

AM

Autodetection Charger Mode

1

USB

CM

USB Pass-Through Mode with CDP Emulation: Auto connects DP/DM to TDP/TDM

depending on CDP status.