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NXP Semiconductors Electronic Components Datasheet

34825 Datasheet

Micro-USB Interface

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Freescale Semiconductor
Technical Data
Document Number: MC34825
Rev 4.0, 9/2014
Micro-USB Interface IC
Supporting Universal Charging
Solution and Wired Accessories
34825
The 34825 is designed to support the Universal Charging Solution
(UCS) recommended by the OMTP (Open Mobile Terminal Platform),
as well as to use the same 5-pin micro or mini-USB connector for other
INTERFACE IC
wired accessories. The 34825 supports various types of external power
supplies to charge the battery, such as a dedicated AC/DC adapter or
a USB port. It has functions built-in to identify the type of the power
supply, and sets low or high charging current, based on the current
capability of the power supply. The 34825 monitors the power supply,
and offers an up to 28 V of overvoltage protection (OVP) to the cell
phone against failed power supplies. The 34825 also contains analog
switches to multiplex the five pins, to support UART and high speed
USB data communication, mono or stereo audio headset with or without
a microphone and a cord remote controller, manufacturing or research-
(PB-FREE)
98ASA00716D
20-PIN QFN
and-development (R/D) test cables, and other accessories.
The 34825 monitors both the VBUS status and the resistance
between the ID pin and the ground to identify the accessory being
plugged into the mini or micro-USB connector. A high-accuracy 5-bit
ADC is offered to distinguish 32 levels of ID resistance that are
assigned to buttons in a cord remote controller or to identification (ID)
Applications
• Cell phones
• MP3/MP4 players
• Portable voice recorders
resistors of accessories. After identifying the attached accessory, the • USB universal charging solution (USC-OMTP)
34825 sends an interrupt signal to a host IC and the host IC can
configure the analog switches via an I2C serial bus for further actions.
When the accessory is detached from the cell phone, an interrupt signal
is also sent to inform the host. This device is powered using
Supports mini/micro - USB connector
UART and USB high speed communication
Remote control/accessories IDs
SMARTMOS technology.
Features
• Identifies various types of power supplies to set low or high battery-
charging current levels
• Internal power switch to offer OVP against up to 28 V failed power
supply input
• Supports stereo/mono headset with or without microphone and
remote controller with pure passive components
• Supports USB or UART R/D test cables
• High-speed (480 Mbps) USB 2.0 compliant
• Supports 32 ID resistance values with a high accuracy 5-bit ADC
• Accessory attachment and detachment detection with an interrupt
signal to the host IC
• I2C interface
• 10 A quiescent current in Standby mode
Baseband
34825
GPIO
I2C
UART
USB XCVR
AUDIO
VDDIO
INT
I2C_SDA
I2C_SCL
RXD
TXD
D+
D-
SPK_L
SPK_R
MIC
VDD
ISET
OUT
VBUS
ID
DP
DM
GND
Charger
LI+
VBUS
ID
D+
D-
GND
USB Connector
Figure 1. 34825 Simplified Application Diagram
© Freescale Semiconductor, Inc., 2010 - 2014. All rights reserved.


NXP Semiconductors Electronic Components Datasheet

34825 Datasheet

Micro-USB Interface

No Preview Available !

ORDERABLE PARTS
ORDERABLE PARTS
Table 1. Orderable Part Variations
Part Number (1)
MC34825EP
Temperature (TA)
-40 °C to 85 °C
Notes
1. To order parts in Tape and Reel, add the R2 suffix to the part number.
Package
3.0 mm x 3.0 mm UTQFN
34825
2
Analog Integrated Circuit Device Data
Freescale Semiconductor


Part Number 34825
Description Micro-USB Interface
Maker NXP
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34825 Datasheet PDF






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