AP4370

AP4370
DECODING IC COMPATIBLE TO QUALCOMM QUICK CHARGE 2.0 PROTOCOL
NEW PRODUCT
Description
Pin Assignments
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.
(Top View)
Pin 1 Mark
D+
1
6
V1
GND
2
5
V2
D-
3
4
VCC
The AP4370 is packaged in TSOT26 and SOT26 packages.
TSOT26 / SOT26
Features







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)
Notes:
Applications

Chargers/ Adapters
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
USB
Connector
D21
VOUT
C21
R21
C22 C23
+
+
R22
D-
D+
GND
R23
Opto-coupler
U21
C26
R24
AP4370
R26
R25
TL431
U23
4
C25
C24
R28
2
3
VCC
D-
GND
D+ 1
6 V1
C27
V2 5
U22
R27
AP4370
Document number: DS37242 Rev. 3 - 2
R29
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AP4370
NEW PRODUCT
Pin Descriptions
Pin Number
Pin Name
1
D+
USB D+ Input
Function
2
GND
Ground Return
3
D-
4
VCC
5
V2
Decoder Output2, used as input of constant voltage/constant current controller
6
V1
Decoder Output1, used as input of constant voltage/constant current controller
USB D- Input
IC Supply Voltage, connected to a ceramic cap.
Functional Block Diagram
VCC
4
Regulator
&
Reference
VDD
VDAT_REF, VSEL_REF
Over
Voltage
Discharge
CLK &
Timer
POWER_OK
VDAT_REF
D+
1
6
V1
SV1
VSEL_REF
RDAT_LKG
Decoder
Logic
S0
3
D-
5V
9V
12V
Encoder
& Timing
Control
5
V2
SV2
VDAT_REF
RDM_DWM
VSEL_REF
GND
2
S1
Absolute Maximum Ratings (Note 4)
Symbol
VCC
IC Supply Voltage
Rating
-0.3 to 25
Unit
V
VD+/VD-
USB Input Voltage
-0.3 to 7
V
VV1/VV2
Decoder Output Voltage
-0.3 to 7
V
Operating Junction Temperature
-40 to +150
°C
TSTG
Storage Temperature
-65 to +150
°C
TLEAD
Lead Temperature (Soldering, 10 sec)
+300
°C
Thermal Resistance (Junction to Ambient)
200
°C/W
ESD (Human Body Model)
4000
V
ESD (Machine Model)
150
V
TJ
θJA
ESD
Parameter
Note 4: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied.
Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.
AP4370
Document number: DS37242 Rev. 3 - 2
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AP4370
Electrical Characteristics
Symbol
(VCC = 5V, TA = +25°C, unless otherwise specified.)
Parameters
Conditions
Min
Typ
Max
Unit
STARTUP AND UVLO SECTION
VTH_ST
VOPR(MIN)
VCC Startup Threshold
–
3.4
3.8
4.2
V
VCC Minimal Operating Voltage
–
3.2
3.6
4.0
V
–
–
80
120
μA
NEW PRODUCT
STANDBY CURRENT SECTION
ICC
Operating Current
QUICK CHARGE PROTOCOL SECTION
VDAT_REF
Data Detect Voltage
–
0.25
0.325
0.40
V
VSEL_REF
Output Voltage Selection Reference
–
1.8
2.0
2.2
V
RDAT_LKG
Data Line Leakage Resistance
–
300
500
800
kΩ
RDCP_DAT
D+ to D- Resistance during DCP Mode
D+ is supplied with 0.6V
–
20
40
Ω
RDM_DWM
D- Pull-down Resistance
–
14.25
19.53
24.80
kΩ
tGLITCH_BC_DONE
D+ High Glitch Filter Time
–
1
1.25
1.5
s
tGLITCH_DM_LOW
D- Low Glitch Filter Time
Note 5
1
2.5
–
ms
Output Voltage Glitch Filter Time
–
20
40
60
ms
D+ D- HVDCP Short Time
–
–
10
20
ms
CDCP_PWR
D+/- Equivalent Capacitance
Note 5
–
–
1
nF
VOTG_SESS_VLD
OTG Session Valid Voltage
–
0.8
–
4.0
V
RV1_ON
V1 Switch Turn-on Resistance
–
–
15
25
Ω
RV2_ON
V2 Switch Turn-on Resistance
–
–
10
18
Ω
V1/V2 Switch Turn-off Resistance
–
tGLITCH_V_CHANGE
tD+_D-_SHORT
OUTPUT SECTION
RV1/V2_OFF
–
High-Z
OVER VOLTAGE DISCHARGE SECTION
Over Voltage Discharge Trigger Point
for 5V Output
Over Voltage Discharge Trigger Point
for 9V Output
Ratio of Target Voltage for Discharge
Finish to OVD Trigger Point
–
5.96
6.15
6.33
V
–
10.58
10.91
11.24
V
–
–
0.9
–
–
IOVD
Over Voltage Discharge Current
–
63.8
75.0
86.3
mA
tOVD
Over Voltage Discharge Duration
–
–
120
–
ms
VOVD5V
VOVD9V
kDIS
Note 5: Guaranteed by design.
AP4370
Document number: DS37242 Rev. 3 - 2
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AP4370
Operation Principle Description
Overall Introduction
NEW PRODUCT
The figure on page 1 is the typical application circuit of AP4370, which follows Qualcomm HVDC Quick Charge 2.0 Protocol to decode the
different combinations of D+/D- signals, generated by the portable device, into the related configurations of V1/V2 for the controller IC to make
the further constant voltage/constant current control. The AP4370 automatically provides 5V output configuration for the connected portable
device that is not compatible to QC 2.0 protocol. When the portable device requests a lower output voltage, the AP4370 will have over voltage
discharge function operate until the output voltage reaches VOVDxV * kDIS or the time duration is over tOVD .
Quick Charge 2.0 Protocol Operation
The switches of S1, SV1 and SV2 (shown in Functional Block Diagram on page 2) will be kept turn-off during the start-up phase, and the default
V1/V2 configuration ensures that the charger/adapter is regulated into 5V output voltage. S0 switch will be turned on to short D+ to D- at start-up
voltage within VOTG_SESS_VLD (0.8V to 4.0V). If AP4370 finds D+ voltage is between VDAT_REF (0.325V, typical) and VSEL_REF (2.0V, typical) lasting for
tGLITCH_BC_DONE, it will turn off S0 to have D+ / D- open, and turn on S1 to have D- connected to GND via RDM_DWM (19.53kΩ, typical). AP4370 will
ensure that D- stays low voltage for more than tGLITCH_DM_LOW (1ms, min) to successfully complete Qualcomm QC 2.0 protocol handshake. After
that, AP4370 can respond to the voltage request made by the portable device via D+/D- data lines. If AP4370 detects that D+/D- keeps voltage
unchanged for a glitch filter period of tGLITCH_V_CHANGE (40ms, typical), it will follow the voltage decoding table below to configure V1/V2 by turning
on/off SV1 and SV2 to output the target voltage. Finally, after the portable device is removed from USB connector, AP4370 will have D+ shorted to
D- within tD+_D-_SHORT (20ms, max), configure V1/V2 to 5V output, and is ready for next handshake.
Decoder
D+ (V)
D- (V)
V1 Switch(SV1)
Status
V2 Switch(SV2)
Status
HVDCP Voltage (V)
0.6
0.6
Turn-on
Turn-on
12
3.3
0.6
Turn-on
Turn-off
9
0.6
3.3
Keep Present V1/V2 Status Unchanged
3.3
3.3
Keep Present V1/V2 Status Unchanged
0.6 or 3.3
GND
Turn-off
Turn-off
5
GND
0.6 or 3.3 or GND
Turn-off
Turn-off
5, AP4370 Protocol
Handshake Reset
Quick Charge 2.0
Protocol
Class A: 5V, 9V, 12V
Table 1. D+/D- Voltage Decoder
AP4370
Document number: DS37242 Rev. 3 - 2
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AP4370
Performance Characteristics
Startup Voltage vs. Ambient Temperature
Minimal Operating Voltage vs. Ambient Temperature
5.0
4.0
4.8
Minimal Operating Voltage (V)
Start-up Voltage (V)
4.4
4.2
4.0
3.8
3.6
3.4
3.8
3.6
3.4
3.2
3.2
3.0
3.0
-40
-20
0
20
40
60
80
100
120
140
-40
-20
0
40
60
80
100
120
140
Ambient Temperature ( C)
Operating Current vs. Ambient Temperature
Data Line Leakage Resistance vs.
Ambient Temperature
700
Data Line Leakage Resistance (k)
100
90
Operating Current (A)
20
o
o
Ambient Temperature ( C)
80
70
60
50
650
600
550
500
450
400
350
300
40
-40
-20
0
20
40
60
80
100
120
-40
140
-20
0
20
40
60
80
100
120
140
o
Ambient Temperature ( C)
o
Ambient Temperature ( C)
D+ to D- Resistance During DCP Mode vs.
Ambient Temperature
D- Pull-down Resistance vs.
Ambient Temperature
30
30
28
25
D- Pull-down Resistance (k)
D+ to D- Resistance During DCP Mode ()
NEW PRODUCT
4.6
20
15
10
5
26
24
22
20
18
16
0
-40
-20
0
20
40
60
80
100
120
-40
140
Document number: DS37242 Rev. 3 - 2
0
20
40
60
80
100
120
140
o
Ambient Temperature ( C)
AP4370
-20
Ambient Temperature ( C)
o
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AP4370
Performance Characteristics (Cont.)
Data Detect Voltage vs. Ambient Temperature
Output Voltage Selection Reference vs.
Ambient Temperature
2.20
Output Voltage Selection Reference (V)
0.40
Data Detect Voltage (V)
0.36
0.34
0.32
0.30
0.28
0.26
2.15
2.10
2.05
2.00
1.95
1.90
1.85
1.80
-40
-20
0
20
40
60
80
100
120
140
-40
-20
0
20
o
60
80
100
120
140
Ambient Temperature ( C)
D+ High Glitch Filter Time vs.
Ambient Temperature
Output Voltage Glitch Filter Time vs.
Ambient Temperature
46
Output Voltage Glitch Filter Time (ms)
1.5
1.4
D+ High Glitch Filter Time (s)
40
o
Ambient Temperature ( C)
1.3
1.2
1.1
1.0
0.9
44
42
40
38
36
34
32
30
-40
-20
0
20
40
60
80
100
120
140
-40
-20
0
20
o
40
60
80
100
120
140
o
Ambient Temperature ( C)
Ambient Temperature ( C)
V1 Switch Turn-on Resistance vs.
Ambient Temperature
V2 Switch Turn-on Resistance vs.
Ambient Temperature
18
28
V2 Switch Turn-on Resistance ()
26
V1 Switch Turn-on Resistance ()
NEW PRODUCT
0.38
24
22
20
18
16
14
12
10
16
14
12
10
8
6
8
-40
-20
0
20
40
60
80
100
120
-40
140
AP4370
Document number: DS37242 Rev. 3 - 2
-20
0
20
40
60
80
100
120
140
o
Ambient Temperature ( C)
o
Ambient Temperature ( C)
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AP4370
Ordering Information
AP4370 XX XX – XX
NEW PRODUCT
Product Name
Package
Packing
RoHS/Green
KT : TSOT26
K : SOT26
TR : Tape & Reel
G1 : Green
Package
Temperature Range
Marking ID
Packing
TSOT26
-40 to +85C
AP4370KTTR-G1
Part Number
L9H
3000/Tape & Reel
SOT26
-40 to +85C
AP4370KTR-G1
L9H
3000/Tape & Reel
Marking Information
(Top View)
L9H
XX
AP4370
Document number: DS37242 Rev. 3 - 2
: Logo
L9H: Marking ID
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AP4370
Package Outline Dimensions (All dimensions in mm(inch).)
(1)
Package Type: TSOT26
NEW PRODUCT
2.800(0.110)
3.000(0.118)
1.500(0.059)
1.700(0.067)
Pin 1 Mark
R0.100(0.004)
MIN
0
8
2.600(0.102)
3.000(0.118)
0.370(0.015)
MIN
0.950(0.037)
BSC
0.100(0.004)
0.250(0.010)
1.900(0.075)
BSC
0.250(0.010)
BSC
GAUGE
PLANE
0.700(0.028)
0.900(0.035)
1.000(0.039)
MAX
0.000(0.000)
0.100(0.004)
AP4370
Document number: DS37242 Rev. 3 - 2
0.350(0.014)
0.510(0.020)
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AP4370
Package Outline Dimensions (All dimensions in mm(inch).) (Cont.)
(2)
Package Type: SOT26
0°
2.820(0.111)
8°
3.100(0.122)
2.650(0.104)
3.000(0.118)
6
0.200(0.008)
0.300(0.012)
0.600(0.024)
5
4
2
3
1.500(0.059)
1.700(0.067)
NEW PRODUCT
0.300(0.012)
0.500(0.020)
Pin 1 Mark
1
0.700(0.028)REF
0.950(0.037)TYP
0.000(0.000)
0.150(0.006)
1.800(0.071)
2.000(0.079)
0.100(0.004)
0.200(0.008)
0.900(0.035) 1.450(0.057)
MAX
1.300(0.051)
AP4370
Document number: DS37242 Rev. 3 - 2
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AP4370
Suggested Pad Layout
(1)
Package Type: TSOT26
X
NEW PRODUCT
Y
Z
E
Dimensions
E
(mm)/(inch)
X
(mm)/(inch)
Y
(mm)/(inch)
Z
(mm)/(inch)
Value
0.950/0.037
0.700/0.028
1.000/0.039
3.199/0.126
AP4370
Document number: DS37242 Rev. 3 - 2
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AP4370
Suggested Pad Layout (Cont.)
(2)
Package Type: SOT26
NEW PRODUCT
E
E
Y
G
Z
X
Dimensions
Z
(mm)/(inch)
G
(mm)/(inch)
X
(mm)/(inch)
Y
(mm)/(inch)
E
(mm)/(inch)
Value
3.600/0.142
1.600/0.063
0.700/0.028
1.000/0.039
0.950/0.037
AP4370
Document number: DS37242 Rev. 3 - 2
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AP4370
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
NEW PRODUCT
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