SCT2330C
Rev. 1.0
For more information www.silicontent.com © 2020 Silicon Content Technology Co., Ltd. All Rights Reserved 1
Product Folder Links: SCT2330C
芯洲科技
Silicon Content Technology
3.8V-24V Vin, 3A Synchronous Step-down DCDC Converter with EMI Reduction
FEATURES
EMI Reduction with Switching Node Ringing-free
400kHz Switching Frequency with 6% Frequency
Spread Spectrum (FSS)
Pulse Skipping Mode PSM with 25uA Quiescent
Current in Light Load Condition
3.8V-24V Wide Input Voltage Range
Up to 3A Continuous Output Load Current
0.8V ±1% Feedback Reference Voltage
Fully Integrated 80mΩ R
dson
High Side MOSFET
and 42mΩ R
dson
Low Side MOSFET
1uA Shut-down Current
80ns Minimum On-time
Precision Enable Threshold for Programmable
UVLO Threshold and Hysteresis
4ms Built-in Soft Start Time
Output Over Voltage Protection
Thermal Shutdown Protection at 160°C
Available in TSOT23-6L Package
APPLICATIONS
White Goods, Home Appliance
Surveillance
Audio, WiFi Speaker
Printer, Charging Station
DTV, STB, Monitor/LCD Display
DESCRIPTION
The SCT2330C is 3A synchronous buck converters
with up to 24V wide input voltage range, which fully
integrates an 80mΩ high-side MOSFET and a 42mΩ
low-side MOSFET to provide high efficiency step-down
DC-DC conversion. The SCT2330C adopts peak
current mode control with the integrated compensation
network, which makes SCT2330C easily to be used by
minimizing the off-chip component count. The
SCT2330C supports the Pulse Skipping Modulation
(PSM) with typical 25uA Ultra-Low Quiescent.
The SCT2330C is an Electromagnetic Interference
(EMI) friendly buck converter with implementing
optimized design for EMI reduction. The SCT2330C
features Frequency Spread Spectrum FSS with ±6%
jittering span of the 400kHz switching frequency and
modulation rate 1/512 of switching frequency to reduce
the conducted EMI. The converter has proprietary
designed gate driver scheme to resist switching node
ringing without sacrificing MOSFET turn-on and turn-off
time, which further erases high frequency radiation EMI
noise caused by the MOSFETs hard switching.
The SCT2330C offers output over-voltage protection,
cycle-by-cycle peak current limit, and thermal
shutdown protection. The device is available in a low-
profile TSOT23-6L package.
TYPICAL APPLICATION
FB
EN
VIN GND
SW
BST
OFF
ON
C3
L1
VIN
VOUT
C1
C2
R1
R2
3.8V-24V, synchronous Buck Converter
0
10
20
30
40
50
60
70
80
90
100
0.001 0.01 0.1 1
Efficiency(%)
Output Current (A)
12VIN 3.3VOUT 400K
24VIN 3.3VOUT 400K
12VIN 5VOUT 400K
24VIN 5VOUT 400K
SCT2330C
2 For more information www.silicontent.com © 2021 Silicon Content Technology Co., Ltd. All Rights Reserved
Product Folder Links: SCT2330C
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Revision 1.0: Production
DEVICE ORDER INFORMATION
PACKAGE MARKING
PACKAGE DISCRIPTION
330C
TSOT23-6L
1) For Tape & Reel, Add Suffix R (e.g. SCT2330CTVBR)
ABSOLUTE MAXIMUM RATINGS
Over operating free-air temperature unless otherwise noted
(1)
PIN CONFIGURATION
DESCRIPTION
MIN
MAX
UNIT
1
2
3 4
5
6
FB
EN
VIN
GND
SW
BST
Top View: TSOT23-6L, Plastic
BST
-0.3
38
V
VIN, SW, EN
-0.3
32
V
FB
-0.3
5.5
V
Operating junction temperature
(2)
-40
105
°C
Storage temperature T
STG
-65
150
°C
(1) Stresses beyond those listed under Absolute Maximum Rating may cause device permanent damage. The device is not guaranteed to
function outside of its Recommended Operation Conditions.
(2) The IC includes over temperature protection to protect the device during overload conditions. Junction temperature will exceed 150°C
when over temperature protection is active. Continuous operation above the specified maximum operating junction temperature will
reduce lifetime.
PIN FUNCTIONS
NAME
NO.
PIN FUNCTION
FB
1
Buck converter output feedback sensing voltage. Connect a resistor divider from
VOUT to FB to set up output voltage. The device regulates FB to the internal
reference of 0.8V typical.
EN
2
Enable logic input. Floating the pin enables the device. This pin supports high voltage
input up to VIN supply to be connected VIN directly to enable the device
automatically. The device has precision enable thresholds 1.18V rising / 1.1V falling
for programmable UVLO threshold and hysteresis.
VIN
3
Power supply input. Must be locally bypassed.
GND
4
Power ground. Must be soldered directly to ground plane.
SW
5
Switching node of the buck converter.