AP4370 Datasheet, PDF (1/12 Pages) Diodes Incorporated – DECODING IC COMPATIBLE TO QUALCOMM QUICK CHARGE 2.0 PROTOCOL

AP4370
DECODING IC COMPATIBLE TO QUALCOMM QUICK CHARGE 2.0 PROTOCOL
Description
The AP4370 is a decoding IC compatible to Qualcomm High Voltage
Dedicated Charging Port (HVDCP) Quick Charge (QC) 2.0 protocol.
It decodes the different combinations of D+/D- signals, generated by
the portable device, into the related configurations of V1/V2, which
can be used to change either voltage reference or voltage feedback
divider resister for the controller IC to make the further constant
voltage/constant current control. The AP4370 has over voltage
discharge feature to accelerate output voltage decline transition. The
AP4370 automatically provides 5V output configuration for the
connected portable device that is not compatible to Qualcomm QC
2.0 protocol.
The AP4370 is packaged in TSOT26 and SOT26 packages.
Pin Assignments
(Top View)
Pin 1 Mark
D+ 1
GND 2
D- 3
6 V1
5 V2
4 VCC
Features
TSOT26 / SOT26
 Compatible to Qualcomm HVDCP Quick Charge 2.0 Protocol
Class A: 5V/9V/12V
 Ultra Low Static Current: 80µA at 5V VCC
 Wide VCC Supply Voltage: 4.5V to 15V
 Over Voltage Discharge Feature to Accelerate Output Voltage
Decline Transition
 Small Profile: TSOT26/SOT26 SMD Package in Accordance with
Level 3 of IPC/JEDEC J-STD-033A
 Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)
 Halogen and Antimony Free. “Green” Device (Note 3)
Applications
 Chargers/ Adapters
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Typical Applications Circuit
Transformer
Secondary
D21
C21 R21
C22 C23 R22
++
Opto-coupler
U21
TL431
U23
R23
R24
R25
C24
R26
C25
R28
R27
R29
USB
Connector
VOUT
D-
D+
GND
AP4370
4 VCC D- ³
2
GND
D+ ¹
6 _V1
V2 ⁵
U22
C26
C27
AP4370
Document number: DS37242 Rev. 3 - 2
1 of 12
www.diodes.com
December 2014
© Diodes Incorporated