LP103S
Preliminary Datasheet
Fast Charging Interface Physical Layer IC
General Description
Features
The LP103S is a fast charge protocol controller. The
feature monitors USB D+/D- data line's signal, and
automatically adjusts output voltage of power source
output to optimize charge time.
The LP103S was supported USB Battery Charging
Specification Revision 1.2(BC1.2), DCP apply the
2.7V operation function, Spreadtrum Fast Charge
Protocol (SFCP), HiSilicon Fast Charge Protocol,
Qualcomm® Quick ChargeTM 2.0/3.0 Class A and B.
Other features include output over voltage protection,
output under voltage protection, temperature sensor
detector and under-voltage lockout (UVLO). The
LP103S is available in a space saving SOP-8 and
SOT23-6 package.
Order Information
LP103S□□□
F: Green
Package Type
SO: SOP-8
B6 : SOT-23-6
Power consumption below 1mW@5 V
Support USB BC1.2
Supports USB DCP 2.7V
Supports QC2.0 Class A and Class B
Supports QC3.0 Class A and Class B
Support HiSilicon FCP Protocol
Support Spreadtrum SFCP Protocol
Support Samsung Mode
Under-Voltage Protection
Output Over-Voltage Protection
Output Short-Circuit Protection
Remote Shutdown Protection
Over-Temperature Protection
UL Certification No. 4787974756
Certificate of Spreadtrum
Available in SOP-8 and SOT23-6
RoHS Compliant and Halogen Free
Applications
Battery Charge Port
USB Dedicated Charging Port
Wall-Adapter
Marking Information
Device
Marking
Package
Shipping
LP103S
LPS
SOP-8
4K/REEL
SOT23-6
3K/REEL
LP103S
YWX
LP103S
YWX
Y: Y is year code. W: W is week code. X: X is series number.
LP103S
Version 0.1 MAR.-2019
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Page 1 of 9
LP103S
Preliminary Datasheet
Typical Application Circuit
VBUS
100kΩ
Rin
FBO
VFB
RLS
PS
LP103S
Regulator
FM
TM
FM
SEL
Cin
USB
Connect
DD+
GND
H/L
Figure 1A. Typical Application Circuit of LP103S with SOP-8 Package Type.
VBUS
Rin
100kΩ
FBO
VFB
RLS
PS
LP103S
Regulator
QC_EN
H/L
Cin
USB
Connect
DD+
GND
Figure 1B. Typical Application Circuit of LP103S with SOT23-6 Package Type.
Note1. For Recommend add 200kΩ from D+ to GND, when application MI4.
Pin Configuration
TM
1
8
PS
FM
2
7
SEL
GND
3
6
D+
FBO
4
5
D-
D+
1
6
D-
GND
2
5
PS
FBO
3
4 QC_EN
SOP-8
SOT23-6
Figure 2. Package Top View
LP103S
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LP103S
Preliminary Datasheet
Function Block Diagram
Bandgap
PS
UVLO
GND
Detector
0.325V/
1V/2V/3V
Current
DAC
FBO
S1
OVP
TM
TM
FM
FM
SEL
Class A/B
Select
Control
Logic
D+
S4
Detector
0.325V/
1V/2V/3V
D-
S3
OSC
S2
Figure 3. Function Block Diagram
Functional Pin Description
Pin NO.
SOP8
SOT23-6
TM
1
--
Temperature Monitor. Connection point for optional external temperature sensor.
FM
2
--
Fault Monitor. Protection mode output driving external shutdown circuitry in case a
fault is detected.
GND
3
2
Ground.
FBO
4
3
Feedback loop drive output. Connected to reference input of external power supply
error amplifier to set output voltage.
D-
5
6
USB D- data line input.
D+
6
1
USB D+ data line input.
SEL
7
--
PS
8
5
QC_EN
--
4
LP103S
Version 0.1 MAR.-2019
Description
Class A/B Selection. Set SEL to low for Class A. Set this pin to high for Class B.
Internal pulled low by 1.1MΩ to GND.
Power Source. Connection point for an external bypass capacitor for the internally
generated supply voltage.
High Voltage Quick Charge Enable. Set QC_EN to low for disable HVQC. Set
QC_EN to high for HVQC operation. Internal pulled high by 2uA.
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LP103S
Preliminary Datasheet
Absolute Maximum Ratings Note2
PS to GND --------------------------------------------------------------------------------------------------------- -0.3V to +6.5V
D+/D- to GND ---------------------------------------------------------------------------------------------------- -0.3V to +6.5V
All Other Pin to GND -------------------------------------------------------------------------------------------- -0.3V to +6.5V
PS Current --------------------------------------------------------------------------------------------------------- 25mA
D+/D- Current ----------------------------------------------------------------------------------------------------- 1mA
Operating Junction Temperature Range (TJ)
Operation Ambient Temperature Range ------------------------------------------------------------- -40°C to +105°C
Storage Temperature Range
Maximum Soldering Temperature (at leads, 10sec)
-------------------------------------------------------- -40℃ to 150℃
---------------------------------------------------------------------------- -65°C to +150°C
----------------------------------------------- +260°C
Note2. 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 in the operational sections of
the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Thermal Information
Thermal Resistance
SOP-8, θJA -------------------------------------------------------------------------------------------------------------- 112°C/W
SOP-8, θJC -------------------------------------------------------------------------------------------------------------- 39°C/W
SOT23-6, θJA ----------------------------------------------------------------------------------------------------------- 99.1°C/W
SOT23-6, θJC ----------------------------------------------------------------------------------------------------------- 67°C/W
LP103S
Version 0.1 MAR.-2019
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LP103S
Preliminary Datasheet
Electrical Characteristics
(VBUS = 5V, TA = 25°C (Unless Otherwise Specified))
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
3.1
4.3
6.3
V
2.5
2.7
2.9
V
200
µA
Supply and Reference Function
Power Source Voltage
Power-Up Reset Threshold Voltage
VPS
TJ= +25 °C
VPS(UVLO)
Power Source Current
IPS
Power Shunt Voltage
VPS(Shunt)
V PS=4.3V, TJ=25°C
IPS= 8mA
VIH
Logic High.
VIL
Logic Low
6.2
V
VPS-1V
SEL and QC_EN Pin Voltage
V
1
SEL Pin Pull Down Resistance
RPD
1.1
MΩ
QC_EN Pull Up Current Source
ICS
2
uA
D+ and D- Data Line Functions (Dedicated Charging Port -- DCP 1.2V/2.7V)
DCP1.2V Data Line Output Voltage
VDCP1.2V
DCP1.2V Data Line Output Resistance
RDCP1.2V
DCP2.7V Data Line Output Voltage
VDCP2.7V
DCP2.7V Data Line Output Resistance
RDCP2.7V
1.08
1.2
1.32
kΩ
100
2.57
2.7
V
2.84
V
kΩ
33.6
D+ and D- Data Line Functions (Spreadtrum Fast Charge Protocol -- SFCP)
VD_VT0
0.309
0.325
0.34
V
VD_VT1
0.95
1.00
1.05
V
VD_VT2
1.90
2.00
2.10
V
VD_VT3
2.85
3.00
3.15
V
SFCP Mode Glitch Filter Time
TG_det
1.6
2.1
2.6
s
Rise/Fall Voltage Delay Time
TV_Rise/ V_Fall
100
ms
TG
3
ms
SFCP Detect Voltage
Deglitch Time
LP103S
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LP103S
Preliminary Datasheet
Electrical Characteristics (Continued)
(VBUS = 5V, TA = 25 °C (Unless Otherwise Specified))
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
D+ and D- Data Line Functions (High Voltage Dedicated Charging Port -- HVDCP)
Data Detect Voltage
VDAT(REF)
0.250
0.325
0.400
V
Output Voltage Selection Reference
VSEL(REF)
1.8
2
2.2
V
Data Lines Short-Circuit Delay
TDAT(Short)
10
20
ms
D+ High Glitch Filter Time
TG(BC)DONE
1
1.5
s
D- Low Glitch Filter Time
TG(DM)Low
1
TG(V)CH
20
Output Voltage Glitch Filter Time
Continuous Mode Glitch Filter Time
VOUT≥ 0.8 V
TG(Cont)CH
D+ Leakage Resistance
RDAT(LXG)
D- Pull-Down Resistance
RDM(DWN)
Switch S1 On-Resistance
RDS(ON)S1
ms
40
100
VPS=3.1V~6.3V,VD+=0.5-3.6V,
S1 is Off
60
ms
200
µs
300
900
1500
kΩ
14.25
19.53
24.5
kΩ
20
40
Ω
VPS=4.3V,VD+≤3.6V,IDrain=200µA
FEEDBACK Pin Drive Functions
QC2.0 Mode
Class A/B
Output Over-Voltage Threshold
IFBO=0uA(5V)
1.44
1.52
1.60
IFBO=40uA(9V)
1.60
1.72
1.84
IFBO=70uA(12V)
1.74
1.87
2.00
IFBO=150uA(20V)
2.12
2.28
2.44
Class A
1.74
1.87
2.00
Class B
2.12
2.28
2.44
V
VTH(OV)
QC3.0 Mode
∆IFBO
2
µA
Output OV Detection Delay Time
TD(OV)
50
µs
Output OV Detection Blanking Time
TB(OV)
500
Output Socket Fault Detection Threshold
VTH(PM)
0.250
Socket Fault Detection Delay Time
TD(PM)
FM Clamp Voltage
VTH(FM)
Over-Temperature Detection Threshold
VTH(TM)
Over-Temperature Detection Delay Time
TD(TM)
1
ms
ITM
100
µA
TON(ITM)
12
ms
FBO Source Current Step
Protection Functions
Temperature Monitor Current Source
Temperature Monitor Current On-Time
Protection Mode Current Source
LP103S
Version 0.1 MAR.-2019
IClamp=100µA
IP
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1.12
100
ms
0.325
0.400
V
40
ms
1
V
1.20
150
1.28
200
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V
µA
Page 6 of 9
LP103S
Preliminary Datasheet
Application Information
The LP103S is a fast charge protocol controller. It
monitors USB D+/D- data line's signal, and
automatically adjusts output voltage of power source
output to optimize charge time.
Under Voltage Lockout (UVLO)
The LP103S had an UVLO internal circuit that enable
the device once the voltage on the VPS voltage
exceeds the UVLO threshold voltage.
Power Source
By pass a 2.2kΩ resistor through VBus to PS pin is
recommended. It can limits the current flowing into the
PS pin and thus into the shunt regulator at the PS pin
to less than 8mA to protect chip. there are also
recommended a decoupling capacitor through PS pin
to GND.
Fault Monitor
It is needed to detect a loaded condition and trigger
protection in case of loading in the absence of a
portable device.
D+/D- Data Lines
All protocol transients by USB data line .
Temperature Monitor
If additional system level thermal protection is
required.
Feed Back Output
Set the output voltage by selecting the resistive
voltage divider ratio. The voltage divider drops the
output voltage to the system feedback voltage. Fixed
100kΩ with high-site divider resistor. Determine the
low-side resistor R1 by the equation:
VBUS = (100k ÷ RLS +1)×VFB
Class A/B Selection
The LP103S has a output voltage levels selection pin,
which allows users to set operational class A or B.
Connecting SEL pin to High-Level, users may operate
the device at class B. When working with a class A,
connect SEL pin to ground or leave it floating as SEL
pin with internal pull down resistance.
QC Enable
For high current and low voltage application, there are
good solution to solve it by pull-low QC_EN Pin. It will
disable Qualcomm® Quick ChargeTM 2.0/3.0 function.
When working with QC 2.0/3.0, connect QC_EN to
high or leave it floating as QC_EN pin is equipped
with internal 2uA pull high currant.
LP103S
Version 0.1 MAR.-2019
Quickly Charger 2.0/3.0 Interface
At power-up LP103S turns on switch S1 to check
short-circuiting USB data lines D+ and D- for the
initial handshake between DCP and PD as
described in the USB BC1.2 specification. After the
USB BC 1.2 handshake is completed, LP103S will
turn off switch N1 if it detects a Quick Charge 2.0
or Quick Charge 3.0 compliant PD. Upon
completion of the Quick Charge 2.0 and Quick
Charge 3.0 handshakes, LP103S will turn on
switch S2 and S3 connecting a resistor pull-down
resistor to D-.
D+
0.6V
3.3V
PD
LP103S
VBUS Output
Note
12V
Class A / B
9V
Class A / B
Continuous Mode
Class A / B
with ±0.2V step
20V
Class B
5V
Default mode
D0.6V
0.6V
0.6V
3.3V
3.3V
0.6V
3.3V
GND
Layout Consideration
The proper PCB layout and component placement
are critical for all circuit.
Here are some
suggestions to the layout of LP103S design.
1. Connected all ground together with one
uninterrupted ground plane, which include power
ground and analog ground.
2. The input capacitor should be located as closed
as possible to the VPS and ground plane.
3. The FBO pin of LP103S is connected to the FB
pin of regulator and close placement of two ICs is
recommended.
FBO
3
2
1
D+
RD
LP103S
4
GND
5
Cin
6
Rin
DVBUS
Figure 4. Recommended PCB Layout Diagram
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LP103S
Preliminary Datasheet
Outline Information
SOP-8 Package (Unit: mm)
D
SYMBOLS
UNIT
LPS
LP103S
YWX
E
E1
1
b
DIMENSION IN MILLIMETER
MIN
NOM
MAX
A
--
--
1.750
A1
0.100
--
0.225
A2
1.300
1.400
1.500
A3
0.600
0.650
0.700
b
0.390
--
0.470
D
4.800
4.900
5.000
E
5.800
6.000
6.200
E1
3.800
3.900
4.000
e
e
L
1.27BSC
0.500
--
0.800
A3
A1
A
A2
L
LP103S
Version 0.1 MAR.-2019
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LP103S
Preliminary Datasheet
Outline Information(Continued)
SOT23-6 Package (Unit: mm)
D
SYMBOLS
UNIT
C
Marking
Code
B
1
b
A1
e
DIMENSION IN MILLIMETER
MIN
MAX
A
0.700
1.000
A1
0.000
0.100
B
1.397
1.803
b
0.300
0.559
C
2.591
3.000
D
2.692
3.099
e
0.838
1.041
H
0.080
0.254
L
0.300
0.610
A
L
LP103S
Version 0.1 MAR.-2019
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