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PDF STUSBCD01B Data sheet ( Hoja de datos )
| Número de pieza | STUSBCD01B | |
| Descripción | USB charger detection interface | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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STUSBCD01B
USB charger detection interface
Features
■ Capable of detecting dedicated USB chargers
and host chargers (current sink and dedicated
methods)
■ Operates with VBAT supply voltage ranging
from 2.2 V to 4.5 V
■ Active high open drain hardware detection pin
(DETECT)
■ GPIO control interface
■ 1.6 V - 2.8 V interface voltage range (VIO)
■ VBUS voltage 6 V clamping circuit
■ Low DP-DM input capacitance
■ ESD: HBM ± 2 kV, CDM 500 V on every pin
■ 12 bumps Flip-Chip package, 1.6 x1.2 mm,
pitch 0.4 mm, max thickness 0.60 mm,
Halogen free RoHS compliant package
Applications
■ Mobile phones
■ PDAs, MP3 players
Description
The STUSBCD01B is a USB charger detection IC
which can detect dedicated USB chargers,
Host/Hub chargers or standard host ports
connected to the USB DP/DM data lines.
The device implements two different detection
methods in order to be able to distinguish
between a dedicated charger and a Host/Hub
charger.
Flip-Chip 12 (1.6 x 1.2 mm)
Operation is controlled through three general
purpose I/O pins; a hardware open drain
detection output is also available.
An internal regulator provides the 1.8 V supply
voltage for the internal blocks and state machine
while a clamping device prevents VBUS voltage
from going over 6 V (typ.).www.DataSheet.net/
The STUSBCD01B is available in a 12 bumps
Flip-Chip 0.4 mm pitch package.
Table 1. Device summary
Order code
STUSBCD01BJR
November 2008
Package
Flip-Chip 12 (1.6 x 1.2 mm)
Rev 1
Packaging
3000 parts per reel
1/19
www.st.com
19
Datasheet pdf - http://www.DataSheet4U.co.kr/
1 page  
STUSBCD01B
3 Functional description
Functional description
The STUSBCD01B is designed to provide USB charger detection functionality to USB
platforms which do not have this feature integrated in the PHY. The device can work with a
supply voltage ranging from 2.2 V to 4.5 V and has an internal regulator which generates the
1.8 V voltage required for the internal blocks and state machine.
The STUSBCD01B can detect a dedicated charger or a Host/Hub charger connected to
USB data lines and provides both an open drain pin and a digital I/O pin for the detection
output signal. The open drain output can be disabled using the /OE input signal.
Two different detection methods, selectable through the STATUS/METHOD pin, are
implemented in order to distinguish between a dedicated charger and a Host/Hub charger. If
the interface voltage is not present the detection method is defined by the status of default
method pin.
The STUSBCD01B features very low power consumption in Standby mode and low input
capacitance on DP/DM pins. An over voltage protection circuit is also implemented on the
VBUS pin in order to limit VBUS voltage to 6 V and provide protection to external devices
connected to it.
3.1
Detection methods
The STUSBCD01B implements a current source/sink method to detect dedicated chargers
(wall chargers) and a current sink method for Host/Hub chargers (based on USB battery
charging spec v1.0). If a standard Host/Hub is connected to the device it is recognized
thanks to its pull-down resistors on DP/DM lines and therefore DETECT/STATUS outputs
will be low.
www.DataSheet.net/
3.2 Dedicated charger detection method
Selected driving method pin low during the falling edge of shutdown or driving default
method pin low if VIO is not present. The dedicated charger detection method uses a current
source on DP pin and a current sink on DM pin to detect the resistor (max 200 Ω) which
connects DP and DM in dedicated chargers.
3.3 Current sink method
Selected driving method pin high during the falling edge of shutdown or driving default
method pin high if VIO is not present. A voltage source of VDAT_SRC is connected to DP
and a current of IDAT_SINK is drawn from DM.
If a Host/Hub charger is connected, STUSBCD01B will see a voltage of VDAT_SRC on pin
DM. The same happens if a dedicated charger is connected and, therefore, in order to
distinguish between the two, if the current sink method detection is successful it is
necessary to run the dedicated charger detection method immediately after.
5/19
Datasheet pdf - http://www.DataSheet4U.co.kr/
5 Page 
STUSBCD01B
Electrical characteristics
Table 9.
Symbol
DC electrical characteristics (analog pins)
(VBAT = 4.2 V, TA = 25 °C, specifications over temperature, -40 to 85 °C)
Parameter
Test conditions
Min.
Typ.
Max. Unit
VBUS VBUS voltage
IVBUS VBUS current
VBUS_CLMP VBUS clamping voltage
VTH_VBUS VBUS voltage detection threshold
ZIN_VBUS VBUS input impedance
CIN DP, DM input capacitance
VDAT_SRC Data source voltage (1)
VDAT_REF Data detect voltage
IDAT_SINK Data sink current
IDCH_SRC
Dedicated charger detection DP
source current
VBUS=0 to 5.25V
REXT = 470Ω
VBUS max 5.25V
IDP=IDAT_SRC (2)
VDM=VDAT_SINK (3)
0 5.25
10
5.3 6
24
400
5
0.615
0.65
0.7
0.25 0.34
50 100
15 30
VTHDPL DP low threshold
ZPD_DET DETECT pin pull down impedance /OE=1
VOH_DET DETECT output driving voltage
IOH_DET = 0.5mA,
VBAT = 2.2 to 4.5V
1. Measured at DP pin. Includes effect of internal switches.
2. IDAT_SRC = 0 to 200 µA according to USB specs.
3. VDAT_SINK = 0.15 V to 3.6 V according to USB specs.
240
VBAT–0.2
0.6
300
360
VBAT
Table 10.
AC electrical characteristics (1)
www.DataSheet.net/
(VBAT = 4.2 V, TA = 25 °C, specifications over temperature, -40 to 85 °C)
Symbol
Parameter
Test conditions
Min. Typ.
Max.
V
µA
V
V
kΩ
pF
V
V
µA
µA
V
kΩ
V
Unit
TVBUS_DBNC VBUS debounce time
TDP_SRC_ON DP source on time
TCHGR_DET_DBNC Charger detect debounce
TDPSRC_HICRNT
DP source off to DETECT high
time
Current sink method
Current sink method
Current sink method
TD_VDAT
TVBUS_DET_CS
TVBUS_DET_DC
TIDCH_SRC_ON
TIDAT_SINK_ON
TD_IDAT_SINK
TPER_DET
VDAT_SRC on delay
VBUS attach to DETECT high time
VBUS attach to DETECT high time
IDCH_SRC on time (2)
IDAT_SINK on time
IDCH_SRC on to IDAT_SINK on delay
Periodic detection period
Current sink method
Current sink method
Dedicated charger method
Dedicated charger method
Dedicated charger method
Dedicated charger method
Hardware detection, No
charger
TW_H/L
Minimum pulse width High/Low All digital inputs
1. All AC parameters guaranteed by design but not production tested.
2. TIDCH_SRC_ON = TD_IDAT_SINK + TIDAT_SINK_ON
5
100
20
40
5
150
145
140
40
100
1
2
8 ms
170 ms
40 ms
70 ms
8 ms
270 ms
248 ms
240 ms
70 ms
170 ms
1.6 s
µs
11/19
Datasheet pdf - http://www.DataSheet4U.co.kr/
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