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See Technical Specifications

LM2575T-12/NOPB

SIMPLE SWITCHER 1A Step-Down Voltage Regulator

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

LM2575T-12/NOPB
Datasheet:

LM2575T-12/NOPB Datasheet (PDF)
Vin (min) (V):

4
Vin (max) (V):

40
Vout (min) (V):

3.3
Vout (max) (V):

37
EDA/CAD Models:

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LM2575T-12/NOPB General Description

The LM2575 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed-frequency oscillator.

The LM2575 series offers a high-efficiency replacement for popular three-terminal 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 optimized for use with the LM2575 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies.

Other features include a specified ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50 μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

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Key Features

3.3V, 5V, 12V, 15V, and Adjustable Output Versions
Adjustable Version Output Voltage Range,
- 1.23V to 37V (57V for HV Version) ±4% Max Over
- Line and Load Conditions
Specified 1A Output Current
Wide Input Voltage Range, 40V up to 60V for HV Version
Requires Only 4 External Components
52 kHz Fixed Frequency Internal Oscillator
TTL Shutdown Capability, Low Power Standby Mode
High Efficiency
Uses Readily Available Standard Inductors
Thermal Shutdown and Current Limit Protection
P⁺ Product Enhancement Tested

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Application

Simple and High-Efficiency Step-Down (Buck) Regulators
Efficient Pre-Regulator for Linear Regulators
On-Card Switching Regulators
Positive to Negative Converters (Buck-Boost)
Negative Step-Up Converters
Power Supply for Battery Chargers

Specifications

Vin (min) (V)	4	Vin (max) (V)	40
Vout (min) (V)	3.3	Vout (max) (V)	37
Iout (max) (A)	1	Iq (typ) (mA)	10
Switching frequency (min) (kHz)	42	Switching frequency (max) (kHz)	63
Features	Enable, Over Current Protection	Operating temperature range (°C)	-40 to 125
Rating	Catalog	Regulated outputs (#)	1
Control mode	Voltage mode	Duty cycle (max) (%)	98
Type	Converter	feature-type	Step Down
feature-isolation		feature-process-technology
feature-output-type	Fixed	feature-switching-frequency-khz	58
feature-number-of-outputs	1	feature-output-voltage-v	12
feature-maximum-output-current-a	1	feature-maximum-output-power-w
feature-minimum-input-voltage-v	4.75	feature-maximum-input-voltage-v	40
feature-typical-switch-current-a		feature-efficiency-	88(Typ)
feature-packaging	Tube	feature-rad-hard
feature-pin-count	5	feature-cecc-qualified	No
feature-esd-protection	Yes	feature-escc-qualified
feature-military	No	feature-aec-qualified	No
feature-aec-qualified-number		feature-eccn-code	EAR99
feature-svhc	No	feature-svhc-exceeds-threshold	No

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Packing

AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.

Warranty

365-Day Product

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Ratings and Reviews

N**s 05/28/2021

Works. sorry for a short time went

M**n 05/13/2020

Seems fine, i haven't been able to rehearse it yet.

A**s 04/03/2020

I am extremely satisfied with the SAM2634 components from Avaq. These are genuine, high-quality products that exceeded my expectations. Highly recommended!

C**s 03/11/2020

Everything is normal, packed well! very quickly came! thanks to the seller!