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Details, datasheet, quote on part number:LM2575S-5
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Datasheet text preview:
Bay Linear
Inspire the Linear Power
1.0A Step Down Switching voltage Regulator
Adjustable & Fix Output
LM2575
Description
The Bay Linear LM2575 contains fixed and adjustable switching voltage regulators that require a minimum of external components. All circuitry necessary to build a buck-switching regulator is included. The LM2575 is available in 3.3V; 5V, 12V & 15V fixed voltages, or an adjustable version with an output voltage range from 1.23V to 37V. The guaranteed accuracy for specified input and load conditions is ±4%. The LM2575 can supply 1A with an excellent load and line regulation. Protection such as cycle-by-cycle current limiting or thermal shutdown has been designed. In standby mode, the current consumption has been minimized (200µA). For 3A step-down switching regulators refer to LM2576 data sheets
Features
· · · · · · · · · · · Guaranteed 1A Output Current High Efficiency Wide Input Voltage, up to 40V 3.3V, 5V, 12V, 15V and Adjustable Output Versions Thermal Shutdown and Current Limit Protection Requires only 4 External Components Low 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 for Linear Regulators On-card Switching Regulators Positive to Negative Converter (Buck-Boost) Simple High-efficiency Step-down (Buck) Portable Instruments
Pin Connection
Ordering Information
PIN CONNECTIONS
Devices
LM2575T-X LM2575S-X LM2575J-X
Package
TO-220 TO-263 LPDD
Temp.
-40 °C to 125 °C -40°C to 125 °C -40°C to 125 °C
X= Output Voltage (X=3.3V, 5.0V, 12V, 15V or Blank for Adjustable) Consult factory for other fixed voltages.
TO-263-5 TO-263-5 Package
TO-220-5 TO-220-5 Package
BAY B2575
12345 1) VIN 2) VOUT 3) GND 4) FB 5) ON/OFF
BAY B2575
12345
1) V I N 2) VOUT 3) G N D 4) F B 5) ON/OFF
Top View
Bay Linear, Inc
2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
LM2575
Absolute Maximum Rating
Parameter
Maximum Input Voltage Power Dissipation ON/Off Pin Input Voltage Output Voltage to Ground Supply Voltage Operating Junction Temperature Range Control Section Power Transistor Storage Temperature Range Lead Temperature (Soldering 10 Sec.)
Symbol
VIN PO
Value
45 Internally Limited -0.3VUnit
V W V V
TJ TSTG TLEAD
-40°C
ELECTRICAL CHARACTERISTICS TA = 25°C VIN = 12V, ILOAD= 100mA unless otherwise specified. Boldface type applies over full Operating Temperature Range.
Parameter Adjustable Regulators (Note 3)(Note 8)
Conditions Typ
VIN = 12V, ILOAD = 0.2A, VOUT = 5V 1.230 1.230 1.230 82 3.3 3.3 3.3 77 5.0 5.0 5.0 77 12 12 12 88 15 15 15 88
LM2575 Min
1.217 1.193 1.180
Units Max
1.243 1.267 1.280 V V %
Output Voltage (VOUT) Efficiency (Note 7) 3.3V Version (Note 3)(Note 9) Output Voltage (VOUT) Efficiency 5V Version (Note 3)(Note 9)
0.5A ILOAD 1A, 8V VIN 40V, VOUT =5V VIN = 12V, ILOAD = 1A, VOUT = 5V VIN = 12V, ILOAD = 0.2A, VOUT = 3.3V 0.2A ILOAD 1A, 4.75V VIN 40V, VOUT = 3.3V VIN = 12V, ILOAD = 1A VIN = 12V, ILOAD = 0.2A, VOUT = 5V
3.234 3.168 3.135
3.366 3.432 3.465
V V %
4.900 4.800 4.750
5.100 5.200 5.250
V V %
Output Voltage (VOUT) Efficiency (Note 7) 12V Version (Note 3)(Note 9)
0.2A ILOAD 1A, 8V VIN 40V, VOUT = 5V VIN = 12V, ILOAD = 1A, VOUT = 5V VIN = 25V, ILOAD = 0.2A, VOUT = 12V
11.760 11.520 11.400
12.240 12.480 12.600
V V %
Output Voltage (VOUT) Efficiency (Note 7) 15V Version (Note 3)(Note 9)
0.2A ILOAD 1A, 15V VIN 40V, VOUT = 12V VIN = 25V, ILOAD = 1A VIN = 30V, ILOAD = 0.2A, VOUT = 15V
14.700 14.400 14.250
15.300 15.600 15.750
V V %
Output Voltage (VOUT) Efficiency (Note 7)
0.2A ILOAD 1A, 18V VIN 40V, VOUT = 15V VIN = 30V, ILOAD = 1A
Bay Linear, Inc
2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
LM2575
ELECTRICAL CHARACTERISTICS TA = 25°C VIN = 12V, ILOAD= 100mA unless otherwise specified. Boldface type applies over full Operating Temperature Range. LM2575 Units Parameters Conditions Min Typ Max
Adjustable Regulator
Feedback Bias Current VOUT = 5V 50 47 42 93 1.7 1.3 100 500 58 63 1.2 1.4 3.0 3.2 2 30 10 200 nA
Fixed and Adjustable Regulators
Oscillator Frequency Saturation Voltage Max Duty Cycle Current Limit Output Leakage Current IOUT = 1A, (Note 4) (Note 5) Peak Current, tON 3µs, (Note 4) 52 0.9 98 2.2 7.5 5 50 65 2 37 2.2 2.4 1.0 0.8 30 10 kHz V % A mA mA µA °C/W
VIN, (Note 6), Output = 0V (Note 6 ), Output = -1V Quiescent Current (Note 6) Standby Quiescent Current ON/OFF Pin = 5V (OFF) T,U package, Junction to Ambient, (Note 7) Thermal Resistance T,U package, Junction to case M ON/OFF Control, Fixed & Adjustable Regulators (Note 8) (Note9) OFF Input Level ON Input Level OFF Logic Current ON Logic Current VOUT = 0V VOUT = 15V or 5V ON/OFF Pin = 5V (OFF) ON/OFF Pin = 0V (ON)
1.4 1.2 4 0.01
V V µA µA
Note 1: Absolute Maxium Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate test conditions for which the device s intended to be functional, but do not guarantee specific performance limits. For quaranteed specifications and test conditions see the Electrical Characteristics. Note 2: All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100% production tested. All limits at temperature extremes are guaranteed via testing. Note 3: External components such as the diode, inductor and capacitor can affect the system performance. Note 4: Output (pin 2) sourcing current. No diode, inductor, or capacitor connected to input. Note 5: Feedback (pin 4) removed from output and connected to 0V. Note 6: Feedback (pin 4) removed from output and connected to 12V to force the output transistor OFF. Note 7: Junction to ambient thermal resistance with approximately 1 square inches of PC board cooper surrounding the leads. Note 8: Test circuit refers to figure 2. Note 9: Test circuit refers to figure 3.
Bay Linear, Inc
2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
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