UCHQ613

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

9 of 9

www.unisonic.com.tw

QW-R121-030.a



APPLICATION INFORMATION

The UTC UCHQ613 only provide the correct electrical signatures on the data line of USB charger port and do

not provide any power for the VBUS.

Divide Mode Selection of 5-W and 10-W USB Chargers

The UTC UCHQ613 provide two types of connections between the DP pin and the DM pin and between the D+

data line and the D– data line of the USB connector for a 5-W USB charger and a 10-W USB charger with a single

USB port. For 5-W USB charger, the DP1 pin is connected to the D– line and the DM1 pin is connected to the D+

line. This is shown in Figure 6. For 10-W USB charger, the DP1 pin is connected to the D+ line and the DM1 pin is

connected to the D– line. This is shown in Figure 7. Table 4 shows different charging schemes for both 5-W and

10-W USB charger solutions. DP2 and DM2 of UCHQ613 also provides this two types of connections.

Table 4. Charging Schemes for 5-W and 10-W USB Chargers

USB CHARGER TYPE

CONTAINING CHARGING SCHEMES

5-W

Divider 1

1.2 V on both D+ and D– Lines

BC1.2 DCP

10-W

Divider 2

1.2 V on both D+ and D– Lines

BC1.2 DCP

Layout Guidelines

Place the UTC UCHQ613 near the USB output connector and place the 0.1-μF bypass capacitor near the IN

pin.

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.