SC8102 DATASHEET
SOUTHCHIP SEMICONDUCTOR TECHNOLOGY (SHANGHAI) CO.,LTD
SOUTHCHIP CONFIDENTIAL
Dual-Ouputs 6-A Buck Converter with Integrated DCP Scheme
1
Description
2
Features
Wide input operating voltage from 4.6V to 36V
11mΩ/27mΩ Low Rdson Internal Power MOSFETs
Max output capacity with 5V/6A
100% duty cycle operation
Low quiescent current
Programmable output power limit
Build-in DP/DM for BC 1.2 DCP scheme
-
BC1.2 DCP Mode
Divider Mode
1.2V/1.2V Mode
The SC8102 is a synchronous dual-output ports buck
converter with a wide input voltage from 4.6V to 36V.
The SC8102 regulates the output voltage at a fixed 5V
or customized voltage by setting the divider resistor.
It also provides high accurate output current limit. The
converter enters Constant Current (CC) Mode in case
any of the two output channels reaches the setting
current
limit.
The
total
output
power
can
be
programmed by a resistor, which makes it easy for
constant power (CP) control.
The SC8102 adopts fixed line drop compensation,
programmable frequency setting and operating modes
selection for PWM and PFM With minimum external
components, maximum functions can be achieved for
user’s different applications.
The SC8102 also supports full protections including
under voltage protection, over voltage protection, short
current protection and auto-restart, over temperature
protection.
The SC8102 adopts 32 pin QFN 5x5 package
-
-
Build-in line drop compensation
PFM/PWM mode selection
Adjustable frequency 80kHz to 600kHz
Hiccup and auto-restart
Full protection of UVLO, OVP, OCP, OTP
3
Applications
Car Charger
Multi-Ports Wall Charger
Hub
Industrial applications
4
Device Information
PACKAGE
32 pin QFN
BODY SIZE
5 mm x 5 mm x 0.75 mm
SC8102QDJR
ORDER NUMBER
Copyright © 2017, Southchip Semiconductor Technology (Shanghai) Co.,Ltd
Please contact
application@southchip.com
for more information.
SC8102 DATASHEET
SOUTCHIP CONFIDENTIAL
SOUTHCHIP SEMICONDUCTOR TECHNOLOGY (SHANGHAI) CO.,LTD
5
Typical Application Circuit
SW
L
0.1uF
BOOT
EN
FREQ
VOUT
DP1
DM1
SNS1P
DP2
DM2
PGND
VIN=5~36V
VOUT=5V
0.1uF
220uF
VIN
100uF
0.1uF
10uF
SC8102
USB1 5V/2.4A
RSNS1
20m
Ω
PWR
MODE
FB
USB2 5V/2.4A
RSNS2
20m
Ω
VCC
1uF
Figure.1 Typical Application Circuit with 5V2.4A Dual-Outputs
AGND
SNSN
SNS2P
SW
VIN
100uF
0.1uF
1uF
EN
FREQ
BOOT
FB
VOUT
L
0.1uF
VOUT
FB
QC/PD
Controller
GND
DP/DM/CC1/CC2
RSNS
SC8102
USB
PWR
MODE
SNSN
SNS2P
SNS1P
VCC
1uF
Figure. 2 Typical Application Circuit for QC/PD Application
2
Please contact
application@southchip.com
for more information.
PGND
AGND
Copyright © 2017, Southchip Semiconductor Technology (Shanghai) Co., Ltd.
SC8102 DATASHEET
SOUTHCHIP SEMICONDUCTOR TECHNOLOGY (SHANGHAI) CO.,LTD
SOUTHCHIP CONFIDENTIAL
VIN=5~36V
VIN
SW
L
0.1uF
VOUT+
BOOT
FB
EN
FREQ
VOUT
SC8102
SNSN
RSNS1
VOUT-
PWR
MODE
SNS2P
VCC
1uF
Figure.3 Typical Application Circuit with general purpose BUCK converter
PGND
AGND
SNS1P
Copyright © 2017, Southchip Semiconductor Technology (Shanghai) Co., Ltd.
Please contact
application@southchip.com
for more information
3
SC8102 DATASHEET
SOUTCHIP CONFIDENTIAL
SOUTHCHIP SEMICONDUCTOR TECHNOLOGY (SHANGHAI) CO.,LTD
6
Terminal Configuration and Functions
32 VCC
31 VIN
30 VIN
29 VIN
27 SW
26 SW
28 SW
25 SW
EN
DP2
DM2
DP1
DM1
NC
PWR
SNS1P
1
2
3
4
5
6
7
8
MODE 12
FREQ 13
FB 14
AGND 15
SNS2P 10
SNSN 9
SW 16
NC 11
24 PGND
23 PGND
22
PGND
VIN
SW
21 PGND
20 PGND
19 SW
18 BOOT
17 VOUT
QFN 32 Package Reference
(Top View)
TERMINAL
I/O
NUMBER
1
2
3
4
5
6
7
8
9
10
11
12
NAME
EN
DP2
DM2
DP1
DM1
NC
PWR
SNS1P
SNSN
SNS2P
NC
MODE
I
I
I
I
I
I
I/O
I/O
I/O
I/O
Enable logic input. Logic high level enables the device and logic low level disables the device.
D+ data line to USB connector 1, used for hand-shaking with portable devices.
D- data line to USB connector 1, used for hand-shaking with portable devices.
D+ data line to USB connector 2, used for hand-shaking with portable devices.
D- data line to USB connector 2, used for hand-shaking with portable devices.
Floating
Output power limit pin. Setting the output power limit by connecting a resistor to GND
Positive end of output 1 current sense amplifier.
Negative end of output current sense amplifier.
Positive end of output 2 current sense amplifier.
Floating
Mode selection pin. Logic high level sets the device working in PWM mode; logic low level or
floating sets the device working in PFM mode.
DESCRIPTION
4
Please contact
application@southchip.com
for more information.
Copyright © 2017, Southchip Semiconductor Technology (Shanghai) Co., Ltd.
SC8102 DATASHEET
SOUTHCHIP SEMICONDUCTOR TECHNOLOGY (SHANGHAI) CO.,LTD
SOUTHCHIP CONFIDENTIAL
13
FREQ
I
The operation frequency is programmed by a resistor between this pin and AGND.
Output voltage feedback. Connect the center of two divider resistor to program the output voltage.
14
FB
I
O
utput voltage be configured for fixed 5.1V with FB pin connected to GND.
15
17
18
16, 19, 25,
26, 27, 28
20~24
29, 30, 31
32
AGND
VOUT
BOOT
I/O
I
PWR
Analog Ground.
Output node of the Buck.
Connect a capacitor between BT and SW to bootstrap a voltage to provide the bias for high side
MOSFET driver.
Switching node.
Power ground.
Input node of Buck. Connect a 10 µF ceramic capacitor from VIN to PGND pin.
Output of internal regulator to provide 5.2V voltage for the bias voltage of internal gate drivers.
Connect a 1 µF ceramic capacitor from VCC to PGND pin.
SW
PGND
VIN
VCC
PWR
PWR
I
PWR
Copyright © 2017, Southchip Semiconductor Technology (Shanghai) Co., Ltd.
Please contact
application@southchip.com
for more information
5
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