Document
STUSBCD01B
USB charger detection interface
Features
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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 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.). The STUSBCD01B is available in a 12 bumps Flip-Chip 0.4 mm pitch package.
Flip-Chip 12 (1.6 x 1.2 mm)
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Applications
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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.
Table 1.
Device summary
Order code STUSBCD01BJR Package Flip-Chip 12 (1.6 x 1.2 mm) Packaging 3000 parts per reel
November 2008
Rev 1
1/19
www.st.com 19
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Contents
STUSBCD01B
Contents
1 2 3 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 3.2 3.3 3.4 3.5 3.6 Detection methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Dedicated charger detection method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Current sink method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Detection triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 VBUS clamping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Internal regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 5 6 7 8 9
Functional tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
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Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
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STUSBCD01B
Application
1
Figure 1.
Application
Application circuit
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Pin configuration
STUSBCD01B
2
Figure 2.
Pin configuration
Bump configuration (top through view)
Table 2.
Bump name C3 C2 A3 B4 A4 B2 A2 A1
Pin description
Symbol VBAT GND VIO DP DM DETECT SHUTDOWN /OE STATUS/ METHOD Type PWR PWR PWR AI/O AI/O O I I Description Analog supply voltage input (2.2 V - 4.5 V) Ground reference Digital interface supply voltage (1.6 V - 2.8 V) Connected to USB D+ Data line Connected to USB D- Data line
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Hardware detection pin (open drain). 300 kΩ internal pull-down resistor. VBAT referred. Standby mode selection pin. Active HIGH. Terminates the detection and resets the device. Output enable for DETECT output. Active LOW. SW detection output: High when Charger detected. Pulled high or low through internal weak pull-up to 1V8V and weak pull-down. Detection method selection input: low for dedicated method, high for current sink method. Hardware selection for detection method. Active only if VIO is not present. Dedicated method is selected if driven low, current sink method if driven high. VBAT referred. Do not leave floating to avoid increased power consumption. VBUS voltage comparator input. Triggers the charger detection. 6V limited voltage when 10 V are applied externally. Regulator output voltage. Bypass capacitor not required.
B1
AI/O
B3
DEFAULT METHOD VBUS 1V8V
AI
C4 C1
AI O
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STUSBCD01B
Functional description
3
Functional description
The STUSBCD01B is designed to provide USB charger detection functionality to USB platforms wh.