LM2575-5.0BWM datasheet, PDF - EEWORLD Datasheet

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LM2575-5.0BWM: DescriptionSwitching Regulator Voltage-mode 3.2A 63kHz Switching Freq-Max BIPolar PDSO24; CategoryPower/power management The power supply circuit; File Size90KB，7 Pages; ManufacturerMicrel ( Microchip ); Websitehttps://www.microchip.com; Related ProductsFound12parts with similar functions to LM2575-5.0BWM

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LM2575-5.0BWM Overview

Switching Regulator Voltage-mode 3.2A 63kHz Switching Freq-Max BIPolar PDSO24

LM2575-5.0BWM Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	Micrel ( Microchip )
package instruction	SOP, SOP24,.4
Reach Compliance Code	compli
Analog Integrated Circuits - Other Types	SWITCHING REGULATOR
control mode	VOLTAGE-MODE
Control Technology	PULSE WIDTH MODULATION
Maximum input voltage	40 V
Minimum input voltage	4 V
Nominal input voltage	12 V
JESD-30 code	R-PDSO-G24
JESD-609 code	e0
length	15.42 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	24
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Maximum output current	3.2 A
Nominal output voltage	5 V
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Encapsulate equivalent code	SOP24,.4
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	240
Certification status	Not Qualified
Maximum seat height	2.64 mm
Maximum supply current (Isup)	10 mA
surface mount	YES
Switch configuration	BUCK
Maximum switching frequency	63 kHz
technology	BIPOLAR
Temperature level	INDUSTRIAL
Terminal surface	Tin/Lead (Sn85Pb15)
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
width	7.52 mm

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LM2575

Micrel

LM2575

52kHz Simple 1A Buck Regulator

General Description

The LM2575 series of monolithic integrated circuits provide

all the active functions for a step-down (buck) switching

regulator. Fixed versions are available with a 3.3V, 5V, 12V,

fixed output. Adjustable versions have an output voltage

range from 1.23V to 37V. Both versions are capable of driving

a 1A load with excellent line and load regulation.

These regulators are simple to use because they require a

minimum number of external components and include internal

frequency compensation and a fixed-frequency oscillator.

The LM2575 series offers a high efficiency replacement for

popular three-terminal adjustable linear regulators. It

substantially reduces the size of the heat sink, and in many

cases no heat sink is required.

A standard series of inductors available from several different

manufacturers are ideal for use with the LM2575 series. This

feature greatly simplifies the design of switch-mode power

supplies.

The feedback voltage is guaranteed to

±2%

tolerance for

adjustable versions, and the output voltage is guaranteed to

±3%

for fixed versions, within specified input voltages and

output load conditions. The oscillator frequency is guaranteed

±10%.

External shutdown is included, featuring less than

200µA standby current. The output switch includes cycle-by-

cycle current limiting and thermal shutdown for full protection

under fault conditions.

Features

• 3.3V, 5V, 12V, and adjustable output versions

• Voltage over specified line and load conditions:

Fixed version:

±3%

max. output voltage

Adjustable version:

±2%

max. feedback voltage

• Guaranteed 1A output current

• Wide input voltage range:

4V to 40V

• Wide output voltage range

1.23V to 37V

• Requires only 4 external components

• 52kHz fixed frequency internal oscillator

• Low power standby mode I

typically < 200µA

• 80% efficiency (adjustable version typically > 80%)

• Uses readily available standard inductors

• Thermal shutdown and current limit protection

• 100% electrical thermal limit burn-in

Applications

•

Simple high-efficiency step-down (buck) regulator

Efficient pre-regulator for linear regulators

On-card switching regulators

Positive to negative converter (inverting Buck-Boost)

Isolated Flyback Converter using minimum number of

external components

• Negative Boost Converter

Typical Applications

870 20

7V–40V

Unregulated

DC Input

Feedback

100µF

LM2575-5.0 Output L1

330µH

1N5822

+5V, 1A

Regulated

Output

7V–40V

Unregulated

DC Input

LM2575

Feedback

100µF

Output L1

330µH

1N5822

OUT

330µF

+5V, 1A

Regulated

Output

R2 3.09k

R1 1k

Gnd On/Off

OUT

330µF

Gnd On/Off

Note: Pin numbers are for TO-220 Package

OUT

= 1.23 1 + R2

(

)

Fixed Regulator in Typical Application

Adjustable Regulator in Fixed Output Application

August 1999

M2575

LM2575-5.0BWM Related Products

	LM2575-5.0BWM	LM2575-12BN	LM2575-12BU	LM2575-12BWM	LM2575-3.3BWM
Description	Switching Regulator Voltage-mode 3.2A 63kHz Switching Freq-Max BIPolar PDSO24	Switching Regulator Voltage-mode 3.2A 63kHz Switching Freq-Max BIPolar PDIP16	Switching Regulator Voltage-mode 3.2A 63kHz Switching Freq-Max BIPolar PSSO5	Switching Regulator Voltage-mode 3.2A 63kHz Switching Freq-Max BIPolar PDSO24	Switching Regulator Voltage-mode 3.2A 63kHz Switching Freq-Max BIPolar PDSO24
Is it Rohs certified?	incompatible	incompatible	incompatible	incompatible	incompatible
Maker	Micrel ( Microchip )	Micrel ( Microchip )	Micrel ( Microchip )	Micrel ( Microchip )	Micrel ( Microchip )
package instruction	SOP, SOP24,.4	DIP, DIP16,.3	TO-263, SMSIP5H,.6,67TB	SOP, SOP24,.4	SOP, SOP24,.4
Reach Compliance Code	compli	_compli	_compli	compli	compli
Analog Integrated Circuits - Other Types	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR
control mode	VOLTAGE-MODE	VOLTAGE-MODE	VOLTAGE-MODE	VOLTAGE-MODE	VOLTAGE-MODE
Control Technology	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION
Maximum input voltage	40 V	40 V	40 V	40 V	40 V
Minimum input voltage	4 V	4 V	4 V	4 V	4 V
Nominal input voltage	12 V	12 V	12 V	12 V	12 V
JESD-30 code	R-PDSO-G24	R-PDIP-T16	R-PSSO-G5	R-PDSO-G24	R-PDSO-G24
JESD-609 code	e0	e0	e0	e0	e0
length	15.42 mm	19.812 mm	10.36 mm	15.42 mm	15.42 mm
Number of functions	1	1	1	1	1
Number of terminals	24	16	5	24	24
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
Maximum output current	3.2 A	3.2 A	3.2 A	3.2 A	3.2 A
Nominal output voltage	5 V	12 V	12 V	12 V	3.3 V
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	SOP	DIP	TO-263	SOP	SOP
Encapsulate equivalent code	SOP24,.4	DIP16,.3	SMSIP5H,.6,67TB	SOP24,.4	SOP24,.4
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE	IN-LINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	240	240	240	240	240
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	2.64 mm	3.937 mm	4.597 mm	2.64 mm	2.64 mm
Maximum supply current (Isup)	10 mA	10 mA	10 mA	10 mA	10 mA
surface mount	YES	NO	YES	YES	YES
Switch configuration	BUCK	BUCK	BUCK	BUCK	BUCK
Maximum switching frequency	63 kHz	63 kHz	63 kHz	63 kHz	63 kHz
technology	BIPOLAR	BIPOLAR	BIPOLAR	BIPOLAR	BIPOLAR
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal surface	Tin/Lead (Sn85Pb15)	Tin/Lead (Sn85Pb15)	Tin/Lead (Sn85Pb15)	Tin/Lead (Sn85Pb15)	Tin/Lead (Sn85Pb15)
Terminal form	GULL WING	THROUGH-HOLE	GULL WING	GULL WING	GULL WING
Terminal pitch	1.27 mm	2.54 mm	1.7 mm	1.27 mm	1.27 mm
Terminal location	DUAL	DUAL	SINGLE	DUAL	DUAL
Maximum time at peak reflow temperature	30	30	30	30	30
width	7.52 mm	7.62 mm	8.77 mm	7.52 mm	7.52 mm
Humidity sensitivity level	1	-	3	1	1

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LM2575-5.0BN	Rochester Electronics	3.2A SWITCHING REGULATOR, 63kHz SWITCHING FREQ-MAX, PDIP16, PLASTIC, DIP-16
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LM2575-5.0BU	Micrel ( Microchip )	Switching Regulator, Voltage-mode, 3.2A, 63kHz Switching Freq-Max, BIPolar, PSSO5, TO-263, 5 PIN
LM2575-5.0BUT&R	Micrel ( Microchip )	Switching Regulator, Voltage-mode, 3.2A, 63kHz Switching Freq-Max, BIPolar, PSSO5, TO-263, 5 PIN
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