FT201XQ-R FTDI, FT201XQ-R Datasheet - Page 27

• Manufacturer Part Number: FT201XQ-R
• Description: USB Interface IC USB to I2C IC QFN-16
• Manufacturer: FTDI

Specifications of FT201XQ-R

• Rohs: yes
• Product: USB 2.0
• Data Rate: 12 Mbps, 480 Mbps
• Interface Type: I2C, USB
• Operating Supply Voltage: 2.97 V to 5.5 V
• Operating Supply Current: 6.4 mA to 8.65 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-16
• Tradename: X-Chip

Alternatively the PWREN# And SLEEP pins may be used to control the LTC4053 such that a battery may
be charged from a standard host (low current) or from a dedicated charging port (high current). In such
a design as shown below the charge current would need to be limited to 0.4A to ensure that the USB host
power limit is not exceeded.
Figure 8.3 USB Battery Charging Detection (2- pin)
In the example above the FT201X SLEEP pin is used to enable/disable the LTC4053, while the PWREN#
signal alters the charging current by altering the resistance on the LTC4053 PROG pin.
A third option shown in the example below uses the SLEEP signal from the FT201X to enable / disable the
battery charger. The BCD# and PWREN# signals are then used to alter the resistance on the PROG pin of
the LTC4053 which controls the charge current drawn from the USB connector.
0.1uF
EEPROM Setting
VBUS
GND
X-Chip Pin
CBUS5
CBUS6
VBUS
GND
CN USB
SLD
4.7uF
VBUS
GND
D+
GND
D-
ID
0R
Function
N.F.
SLEEP#
PWREN#
0.1uF
1
2
3
4
5
GND
VBUS
GND
Copyright © 2013 Future Technology Devices International Limited
10nF
600R/2A
VBUS
GND
De-acticate Sleep
Force Power Enable
Battery Charger Enable
Battery Options
27R
27R
0.1uF
1
2
3
4
5
3V3OUT
GND
VCC
GND
CHRG
FAULT
TIMER
U1
GND
DM
DP
RESET#
3V3OUT
LTC4053EDD
VBUS
ACPR
SHDN
PROG
BAT
NTC
X
X
X
GND
3V3OUT
10
9
8
7
6
JUMPER-2mm
GND
CBUS5
CBUS6
2K2
VBUS
FT201X
4K32 1%
GND
16K5 1%
FT201X USB I2C SLAVE IC Datasheet
NTC
SLEEP#
SLEEP#
PWREN#
0.4A when enumerated
0A when in sleep mode
JP1
SIP-3
NTC
0.4A when connected to a dedicated charger port
0.1A when not enumerated and not in sleep mode
Document No.: FT_000627 Clearance No.: FTDI# 264
4K32 1%
PWREN#
VBUS
GND
GND
0.1uF
3V3OUT
GND
JP1
1-2
2-3
VBATT
GND
NCT Available
0.1uF
1R
1uF
NCT Enabled
NCT Disabled (Default)
GND
TB3.5mm
1
+
-
NCT
Version 1.3
27