SCT2332
Rev. 1.1
For more information www.silicontent.com © 2017 Silicon Content Technology Co., Ltd. All Rights Reserved 1
Product Folder Links: SCT2332
芯 洲 科 技
Silicon Content Technology
3.8V-32V Vin, 3A Synchronous Step-down DCDC Converter
FEATURES
Switching Node Ringing-free
400kHz Switching Frequency
Pulse Skipping Mode PSM in Light Load Condition
3.8V-32V 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
Low Drop out (LDO) Mode Operation
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 SCT2332 is 3A synchronous buck converters with
up to 32V wide input voltage range, which fully
integrates an 80mΩ high-side MOSFET and a 42mΩ
low-side MOSFET to provide high efficiency step-down
DCDC conversion. The SCT2332 adopts peak current
mode control with the integrated compensation
network, which makes SCT2332 easily to be used by
minimizing the off-chip component count. The
SCT2332 supports the Pulse Skipping Modulation
(PSM).
The SCT2332 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
SCT2332
2 For more information www.silicontent.com © 2018 Silicon Content Technology Co., Ltd. All Rights Reserved
Product Folder Links: SCT2332
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Revision 1.0: Release to market
Revision 1.1: Delete VS in ABS table
DEVICE ORDER INFORMATION
PART NUMBER
PACKAGE MARKING
PACKAGE DISCRIPTION
SCT2332TVB
2332
TSOT23-6L
1) For Tape & Reel, Add Suffix R (e.g. SCT2332TVBR)
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
40
V
VIN, SW, EN
-0.3
34
V
FB
-0.3
5.5
V
Operating junction temperature
(2)
-40
125
°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.