DS_FT230X Datasheet, PDF (29/44 Pages) List of Unclassifed Manufacturers – Future Technology Devices International Ltd

VBUS
3V3OUT
VBUS 3V3OUT
FT230X USB TO BASIC UART IC
Version 1.2
Document No.: FT_000566 Clearance No.: FTDI# 260
VBUS 3V3OUT
CN USB
VBUS
D-
D+
ID
GND
1
2
3
4
5
600R/2A
27R
27R
10nF
U1
3V3OUT
DM
DP
RESET#
0.1uF 0.1uF
GND GND
N.F.
0R
SLD GND
GND
0.1uF
GND
CBUS5
CBUS6
FT230X
SLEEP#
PWREN#
GND
VBUS VBUS
VBUS
VBATT
0.1uF
4.7uF
GND GND
0.1uF
1
2
3
4
5
CHRG
VCC
FAULT
TIMER
GND
ACPR
BAT
SHDN
PROG
NTC
10
9
8
7
6
LTC4053EDD
2K2
SLEEP#
NTC
16K5 1% 4K32 1%
1+
NCT
-
TB3.5mm
1uF
GND GND
GND
EEPROM Setting
X-Chip Pin
CBUS5
CBUS6
Function
SLEEP#
PWREN#
Battery Options
Battery Charger Enable _X
Force Power Enable X
De-acticate Sleep
X
1R
PWREN#
GND GND
VBUS
GND GND
0.4A when connected to a dedicated charger port
0.4A when enumerated
0.1A when not enumerated and not in sleep mode
0A when in sleep mode
NTC
4K32 1%
JUMPER-2mm
JP1
SIP-3
GND
JP1
NCT Available
1-2 NCT Enabled
2-3 NCT Disabled (Default)
Figure 7.5 USB Battery Charging Detection (2 pin)
In the example above the FT230X 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 FT230X 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.
Copyright © 2013 Future Technology Devices International Limited
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