DC/DC Converter. LSP3127 Datasheet

LSP3127 Datasheet PDF, Equivalent


Part Number

LSP3127

Description

52KHz 2A PWM Buck DC/DC Converter

Manufacture

JBS

Total Page 8 Pages
PDF Download
Download LSP3127 Datasheet PDF


LSP3127 Datasheet
JOINT BAYSEMICONDUCTOR CO.,LTD LSP312
.+=$3:0%XFN'&'&&RQYHUWHU 

„ FEATURES
z Output voltage: 3.3V, 5.0V, 12V, and adjustable
output version
z Adjustable version output voltage range:1.23V to
37V±4%
z 52KHz±15% fixed switching frequency
z Voltage mode non-synchronous PWM control
z Thermal-shutdown and current-limit protection
z ON/OFF shutdown control input
z Operating voltage can be up to 40V
z Output load current: 2A
z Low power standby mode
z Built-in switching transistor on chip
z SOP8-EP package
„ APPLICATIONS
z Simple High-efficiency step-down regulator
z On-card switching regulators
z Positive to negative converter
„ GENERAL DESCRIPTION
The LSP3127 series are monolithic IC that design for
a step-down DC/DC converter, and own the ability of
driving a 2A load without additional transistor
component. Due to reducing the number of external
component, the board space can be saved easily.
The external shutdown function can be controlled by
logic level and then come into standby mode. The
internal compensation makes feedback control have
good line and load regulation without external design.
Regarding protected function, thermal shutdown is to
prevent over temperature operating from damage,
and current limit is against over current operating of
the output switch. The LSP3127 series operates at a
switching frequency of 52 KHz thus allowing smaller
sized filter components than what would be needed
with lower frequency switching regulators. Other
features include a guaranteed ±4% tolerance on
output voltage under specified input voltage and
output load conditions, and ±15% on the oscillator
frequency. The output version included fixed 3.3V,
5V, 12V, and an adjustable type. The package is
available in a standard SOP8-EP package.
„ PIN CONFIGURATION
SOP8-EP
(Top View)
„ PIN DESCRIPTION
Name
VIN
OUTPUT
FB
SD
GND
GND
GND
GND
No.
1
2
3
4
5
6
7
8
Description
Operating Voltage Input
Switching Output
Output Voltage Feedback Control
On/Off Shutdown
Ground
Ground
Ground
Ground
1/


LSP3127 Datasheet
JOINT BAYSEMICONDUCTOR CO.,LTD LSP312
.+=$3:0%XFN'&'&&RQYHUWHU 

„ BLOCK DIAGRAM
„ ABSOLUTE MAXIMUM RATINGS
Symbol
Paramrter
VCC Supply Voltage
VSD ON/OFF Pin input Voltage
VFB Feedback Pin Voltage
VOUT
Output Voltage to Ground
PD Power Dissipation
TST Storage Temperature
TOP Operating Temperature
VOP Operating Voltage
Rating
+45
-0.3 to +25
-0.3 to +25
-1
Internally Limited
-65 to +150
-40 to +125
+4.5 to +40
Unit
V
V
V
V
W
V
2/ 


Features Datasheet pdf JOINT  BAY SEMICONDUCTOR CO.,LTD .+=$3:0%XFN'&'&&RQYHUW HU  „ z z z z z z z z z z z LSP312   FEATURES Output voltage: 3.3V, 5.0V, 12V, and adjustabl e output version Adjustable version out put voltage range:1.23V to 37V±4% 52KH z±15% fixed switching frequency Voltag e mode non-synchronous PWM control Ther mal-shutdown and current-limit protecti on ON/OFF shutdown control input Operat ing voltage can be up to 40V Output loa d current: 2A Low power standby mode Bu ilt-in switching transistor on chip SOP 8-EP package „ GENERAL DESCRIPTION „ z z z APPLICATIONS Simple High-effi ciency step-down regulator On-card swit ching regulators Positive to negative c onverter The LSP3127 series are monoli thic IC that design for a step-down DC/ DC converter, and own the ability of dr iving a 2A load without additional tran sistor component. Due to reducing the n umber of external component, the board space can be saved easily. The external shutdown function can be con.
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