Key facts
- Brand
- STMicroelectronics
- Model
- STUSBCD01B
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-08
Start here
STMicroelectronics STUSBCD01B USB Charger Detection Interface Datasheet
The STMicroelectronics STUSBCD01B is an integrated circuit designed to provide USB charger detection functionality for platforms lacking this feature in their PHY. It operates with a supply voltage ranging from 2.2 V to 4.5 V and includes an internal regulator that generates the required 1.8 V for internal blocks.
The device implements two distinct detection methods selectable via the STATUS/METHOD pin: a dedicated charger detection method using current sources/sinks on DP/DM lines, and a current sink method based on USB battery charging spec v1.0. It features an active high open drain hardware detection pin (DETECT) and supports over-voltage protection up to 6 V.
STMicroelectronics STUSBCD01B specifications
| Supply voltage range (VBAT) | 2.2 V to 4.5 V |
|---|---|
| Interface voltage range (Vio) | 1.6 V - 2.8 V |
| VBUS clamping voltage | 6 V |
| ESD protection (HBM) | +2 kV |
| Package type | Flip-Chip 12 bumps |
| Pin pitch | 0.4 mm |
Source: STMicroelectronics STUSBCD01B USB Charger Detection Interface Datasheet
All STMicroelectronics STUSBCD01B documents by type
Ratings, dimensions and ordering codes, for selection and design work.
How to use the product for one specific task, with worked examples.
- ST AN2865 handbook 17 p
Questions answered in these manuals
What detection methods does the STUSBCD01B support?
The device supports a dedicated charger detection method and a current sink method for Host/Hub chargers.
From: STMicroelectronics STUSBCD01B USB Charger Detection Interface Datasheet
How does the device detect a dedicated charger?
It uses a current source on the DP pin and a current sink on the DM pin to detect the resistor connecting them.
From: STMicroelectronics STUSBCD01B USB Charger Detection Interface Datasheet
What external components are required for the STUSBCD01B application circuit?
The device requires five external components: two capacitors to bypass power supplies, one resistor for the VBUS clamping circuit, and two series resistors on the DP/DM data lines.
From: ST AN2865 handbook
How does the STUSBCD01B distinguish between a dedicated charger and a standard host port?
It uses a current sink detection method where it connects a current sink to the DM pin and applies a voltage source to the DP pin; if the DM pin goes high for at least 20 ms during this phase, the detection is successful.
From: ST AN2865 handbook