IP6503S
2.4A/3.1A OUTPUT STEP-DOWN CONVERTER
with DCP PROTOCOLS
1 Features
Synchronous step-down converter
Built-in Power MOSFETs
Wide Input Voltage Range, 8V to 32V
Output Voltage Range, 5V
Output Current, 2.4A/3.1A
Output Current Limit Protection
Conversion efficiency up to 94%
Soft-Start
Output Voltage Line Loss Compensation,
50mV@1A
Supports DCP(BC1.2, Apple, Samsung)
Multiple Safety Protections
Input Over-Current Protection, Output
Over-Current
Protection,
Input
Over/Under Voltage Protection, Short
Circuit Protection
Over Temperature Protection
Input Voltage Withstand up to 40V
ESD 4KV
3 Introduction
IP6503S is a synchronous step-down
converter with built-in power MOSFETs. IP6503S
supports DCP protocols (BC1.2, Apple and
Samsung), providing total solution to car charger,
charge adapter and intelligent power hub
applications.
IP6503S exhibits CV/CC characteristics. The
output in CV mode when the load current lower
than current limit, otherwise in CC mode, in which
the output voltage decreases as the load current
increases.
IP6503S
supports
output
voltage
compensation due to the line loss. The output
voltage increases at 50mV@1A rate as the load
current increases.
IP6503S incorporates soft-start function to
prevent the inrush current during start-up.
IP6503S
incorporates
multiple
safety
protections, such as input OV/UV, output
OV/UV/OC and SC protection.
The package of IP6503S is ESOP8.
2 Application
Car Charger
Charge Adapter
Intelligent Power Hub
V1.0
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IP6503S
L2
VIN输入 8-32V
VIN
C3
1
8
BST
R1
C5
NC
C1
C4
DP
2
IP6503S
3
6
DM
4
5
VOUT
GND
C2
SW
7
L1
VOUT
DM
DP
ESOP8
Fig. 1 IP6503S Simplified Schematic
4 PIN Definition
VIN
1
8
BST
NC
2
IP6503S
DP
3
SW
7
GND
6
DM
4
5
VOUT
ESOP8
Fig. 2 IP6503S PIN Configuration
NO.
1
2
3
4
5
6
7
8
9(EPAD)
Name
VIN
NC
DP
DM
VOUT
GND
SW
BST
GND
Input voltage node
Floating PIN, do not connect
Connect to USB DP data line
Connect to USB DM data line
Output voltage feedback node
Power ground
Switching node of the DC-DC converter
Bootstrap capacitor node
Power and thermal ground
Description
V1.0
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IP6503S
6 Absolute Maximum Ratings
Parameters
Input voltage range
SW voltage range
DM/DP voltage range
VOUT voltage range
Junction Temp range
Storage Temp range
Thermal resistance (junction
to ambient）
ESD（HBM）
Symbol
V
IN
V
SW
V
DM/DP
V
VSP/VSN
T
J
Tstg
θ
JA
ESD
Value
-0.3 ~ 40
-0.3 ~ 40
-0.3 ~ 30
-0.3 ~ 30
-40 ~ 150
-60 ~ 150
40
4
Unit
V
V
V
V
℃
℃
℃/W
KV
* Stresses beyond 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 are not implied. Exposure
to absolute-maximum-rated conditions for extended periods may affect device reliability. Unless otherwise
specified, all voltages are referenced to VSS pin.
7 Recommended Operating Conditions
Parameter
Input voltage
Symbol
V
IN
Min.
8
Typ.
12/24
Max.
32
Unit
V
V1.0
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IP6503S
8 Electrical Charateristics
TA=25℃，L=22uH，C
OUT
=220uF E-cap(About 100mΩ ESR)，VIN=12V，VOUT=5V, otherwise specified
Parameter
Input System
Input voltage
Input under
voltage threshold
Input over
voltage threshold
Input quiescent
current
Converter System
High side
MOSFET on
resistance
Low side
MOSFET on
resistance
Switching
frequency
Output System
Output voltage
Output voltage
ripple
Soft-start time
Line loss
compensation
Current limit in
CC mode
Output hiccup
restart voltage
Thermal
shutdown Temp.
Thermal
shutdown Temp.
hysteresis
V1.0
Symbol
Test Condition
Min.
Typ.
Max.
Unit
V
IN
V
IN-UV
hysteresis
V
IN-OV
hysteresis
I
Q
VIN=12V, VOUT=5V@0A
8
12
8.1
0.3
32
0.2
1
32
V
V
V
V
V
mA
R
DS(ON)
100
mΩ
R
DS(ON)
80
mΩ
F
SW
150
KHz
V
OUT
ΔV
OUT
T
SS
V
COMP
I
OUT
V
OUT
T
OTP
VIN=12V，VOUT=5V@3A
VIN=12V，VOUT=5V
VIN=12V，
VOUT=5V，
IOUT=3A
VIN=12V，VOUT=5V
When output enters CC mode,
output hiccup restart voltage
4.75
5
150
10
180
3.1
4
150
5.25
V
mV
ms
mV
A
V
℃
ΔT
OTP
40
℃
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