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FT231XS-R Datasheet(PDF) 29 Page - Future Technology Devices International Ltd.

Part # FT231XS-R
Description  Future Technology Devices International Ltd.
PDF  44 Pages
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Manufacturer  FTDI [Future Technology Devices International Ltd.]
Direct Link  http://www.ftdichip.com
Logo FTDI - Future Technology Devices International Ltd.

FT231XS-R Datasheet(HTML) 29 Page - Future Technology Devices International Ltd.

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Copyright © 2013 Future Technology Devices International Limited
29
FT231X USB TO FULL HANDSHAKE UART IC
Datasheet
Version 1.2
Document No.: FT_000565 Clearance No.:
FTDI# 261
X-Chip Pin
Function
EEPROM Setting
CBUS5
CBUS6
SLEEP#
PWREN#
Battery Options
Battery Charger Enable
Force Power Enable
De-acticate Sleep
X
X
X
SLEEP#
PWREN#
DP
DM
3V3OUT
RESET#
CBUS6
CBUS5
U1
FT231X
0.4A when connected to a dedicated charger port
GND
GND
0.1uF
0.1uF
GND
GND
600R/2A
10nF
VBUS
3V3OUT
0.1uF
0R
GND
SLD
GND
27R
27R
VBUS
1
D-
2
D+
3
GND
5
ID
4
CN USB
3V3OUT
3V3OUT
VBUS
VBUS
N.F.
16K5 1%
GND
4K32 1%
PWREN#
0.4A when enumerated
0A when in sleep mode
0.1A when not enumerated and not in sleep mode
VCC
2
FAULT
3
TIMER
4
GND
5
NTC
6
PROG
7
SHDN
8
BAT
9
ACPR
10
CHRG
1
LTC4053EDD
GND
4.7uF
0.1uF
GND
VBUS
VBUS
GND
VBATT
GND
GND
1
TB3.5mm
NTC
0.1uF
GND
VBUS
1uF
1R
GND
VBUS
2K2
GND
JP1
1-2
2-3
NCT Enabled
NCT Available
JP1
SIP-3
NTC
GND
NCT Disabled (Default)
JUMPER-2mm
4K32 1%
+
-
NCT
SLEEP#
Figure 7.5 USB Battery Charging Detection (2 pin)
In the example above the FT231X 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 FT231X 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.



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