Adjustable Output LM2575 Description Linear LM2575 cont

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Adjustable Output LM2575 Description Linear LM2575 cont

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1.0A Step Down Switching voltage Regulator
Adjustable Output
LM2575
Description
Linear LM2575 contains fixed adjustable switching voltage regulators that require minimum external components. circuitry necessary build buck-switching regulator included. LM2575 available 3.3V; fixed voltages, adjustable version with output voltage range from 1.23V 37V. guaranteed accuracy specified input load conditions ±4%. LM2575 supply with excellent load line regulation. Protection such cycle-by-cycle current limiting thermal shutdown been designed. standby mode, current consumption been minimized (200µA). step-down switching regulators refer LM2576 data sheets
Features
Guaranteed Output Current High Efficiency Wide Input Voltage, 3.3V, 12V, Adjustable Output Versions Thermal Shutdown Current Limit Protection Requires only External Components Power Standby Mode 200µA Typical Shutdown Capability (Standby Mode) 52kHz Fixed Frequency Internal Oscillator Uses Standard Inductors Pin-to-Pin Compatible with LM2575
Applications
Efficient Pre-Regulator Linear Regulators On-card Switching Regulators Positive Negative Converter (Buck-Boost) Simple High-efficiency Step-down (Buck) Portable Instruments
Connection
Ordering Information
CONNECTIONS
Devices
LM2575T-X LM2575S-X LM2575J-X
Package
TO-220 TO-263 LPDD
Temp.
-40°C -40°C
Output Voltage (X=3.3V, 5.0V, 12V, Blank Adjustable) Consult factory other fixed voltages.
TO-263-5 Package
TO-220-5 Package
B2575
VOUT ON/OFF
B2575
VOUT ON/OFF
View
Linear,
2418 Armstrong Street, Livermore, 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
LM2575
Absolute Maximum Rating
Parameter
Maximum Input Voltage Power Dissipation ON/Off Input Voltage Output Voltage Ground Supply Voltage Operating Junction Temperature Range Control Section Power Transistor Storage Temperature Range Lead Temperature (Soldering Sec.)
Symbol
Value
Internally Limited -0.3V<V<VIN
Unit
TSTG TLEAD
-40<TJ<85
ELECTRICAL CHARACTERISTICS 25°C 12V, ILOAD= 100mA unless otherwise specified. Boldface type applies over full Operating Temperature Range.
Parameter Adjustable Regulators (Note 3)(Note
Conditions
12V, ILOAD 0.2A, VOUT 1.230 1.230 1.230
LM2575
1.217 1.193 1.180
Units
1.243 1.267 1.280
Output Voltage (VOUT) Efficiency (Note 3.3V Version (Note 3)(Note Output Voltage (VOUT) Efficiency Version (Note 3)(Note
0.5A ILOAD 40V, VOUT 12V, ILOAD VOUT 12V, ILOAD 0.2A, VOUT 3.3V 0.2A ILOAD 4.75V 40V, VOUT 3.3V 12V, ILOAD 12V, ILOAD 0.2A, VOUT
3.234 3.168 3.135
3.366 3.432 3.465
4.900 4.800 4.750
5.100 5.200 5.250
Output Voltage (VOUT) Efficiency (Note Version (Note 3)(Note
0.2A ILOAD 40V, VOUT 12V, ILOAD VOUT 25V, ILOAD 0.2A, VOUT
11.760 11.520 11.400
12.240 12.480 12.600
Output Voltage (VOUT) Efficiency (Note Version (Note 3)(Note
0.2A ILOAD 40V, VOUT 25V, ILOAD 30V, ILOAD 0.2A, VOUT
14.700 14.400 14.250
15.300 15.600 15.750
Output Voltage (VOUT) Efficiency (Note
0.2A ILOAD 40V, VOUT 30V, ILOAD
Linear,
2418 Armstrong Street, Livermore, 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
LM2575
ELECTRICAL CHARACTERISTICS 25°C 12V, ILOAD= 100mA unless otherwise specified. Boldface type applies over full Operating Temperature Range. LM2575 Units Parameters Conditions
Adjustable Regulator
Feedback Bias Current VOUT
Fixed Adjustable Regulators
Oscillator Frequency Saturation Voltage Duty Cycle Current Limit Output Leakage Current IOUT (Note (Note Peak Current, 3µs, (Note °C/W
VIN, (Note Output (Note Output Quiescent Current (Note Standby Quiescent Current ON/OFF (OFF) package, Junction Ambient, (Note Thermal Resistance package, Junction case ON/OFF Control, Fixed Adjustable Regulators (Note (Note9) Input Level Input Level Logic Current Logic Current VOUT VOUT ON/OFF (OFF) ON/OFF (ON)
0.01
Note Absolute Maxium Ratings indicate limits beyond which damage device occur. Operating Ratings indicate test conditions which device intended functional, guarantee specific performance limits. quaranteed specifications test conditions Electrical Characteristics. Note limits guaranteed room temperature (standard type face) temperature extremes (bold type face). room temperature limits 100% production tested. limits temperature extremes guaranteed testing. Note External components such diode, inductor capacitor affect system performance. Note Output (pin sourcing current. diode, inductor, capacitor connected input. Note Feedback (pin removed from output connected Note Feedback (pin removed from output connected force output transistor OFF. Note Junction ambient thermal resistance with approximately square inches board cooper surrounding leads. Note Test circuit refers figure Note Test circuit refers figure
Linear,
2418 Armstrong Street, Livermore, 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
LM2575
Linear,
2418 Armstrong Street, Livermore, 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
LM2575
LM25755.0
Linear,
2418 Armstrong Street, Livermore, 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
LM2575
LM2575 -FIX
OUTPUT
LM2575ADJ
Linear,
2418 Armstrong Street, Livermore, 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
LM2575
Advance Information- These data sheets contain descriptions products that development. specifications based engineering calculations, computer simulations and/ initial prototype evaluation. Preliminary Information- These data sheets contain minimum maximum specifications that based initial device characterizations. These limits subject change upon completion full characterization over specified temperature supply voltage ranges.
application circuit examples only explain representative applications devices intended guarantee circuit design permit industrial property right other rights execute. Linear takes responsibility problems related industrial property right resulting from contents shown data book. Typical parameters vary different applications. Customer's technical experts must validate operating parameters including Typical" each customer application.
LIFE SUPPORT NUCLEAR POLICY Linear products authorized should used within life support systems which intended surgical implants into body support sustain life, aircraft, space equipment, submarine, nuclear facility applications without specific written consent Linear President.
Linear,
2418 Armstrong Street, Livermore, 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com

Adjustable Output LM2575 Description Linear LM2575 cont

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