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LM2594HVN-5.0/NOPB

SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

LM2594HVN-5.0/NOPB
Datasheet:

LM2594HVN-5.0/NOPB Datasheet (PDF)
Vin (min) (V):

4.5
Vin (max) (V):

60
Vout (min) (V):

3.3
Vout (max) (V):

37
EDA/CAD Models:

Request Free CAD Models for LM2594HVN-5.0/NOPB

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LM2594HVN-5.0/NOPB General Description

The LM2594xx series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 0.5-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version, and are packaged in a 8-pin PDIP and a 8-pin surface-mount SOIC package.

Requiring a minimum number of external components, these regulators are simple to use and feature internal frequency compensation, a fixed-frequency oscillator, and improved line and load regulation specifications.

The new product, LMR36506, offers reduced BOM cost, higher efficiency, and smaller solution size with many other features. See the Device Comparison Table to compare specs. Start WEBENCH Design with LMR36506.

A standard series of inductors (both through-hole and surface-mount types) are available from several different manufacturers optimized for use with the LM2594xx series. This feature greatly simplifies the design of switch-mode power supplies.

Other features include an ensured ±4% tolerance on output voltage under all conditions of input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 85-µA standby current. Self-protection features include a two stage frequency reducing current limit for the output switch and an overtemperature shutdown for complete protection under fault conditions.

The LM2594HV is for applications requiring an input voltage up to 60 V.

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Key Features

New product available:
- LMR36506 3-V to 65-V 0.6-A ultra-small synchronous buck converter
For faster time to market:
- TPSM365R6 3-V to 65-V, 600-mA/300-mA synchronous buck power module
3.3-V, 5-V, 12-V, and adjustable output versions
Adjustable version output voltage range: 1.2 V to 37 V (57-V for the HV version), ±4% maximum over line and load conditions
Available in 8-pin surface-mount SOIC and 8-pin PDIP packages
Ensured 0.5-A output current
Input voltage range up to 60 V
Requires only four external components
150-kHz fixed-frequency internal oscillator
TTL shutdown capability
Low power standby mode, I Q typically 85 µA
High efficiency
Uses readily-available standard inductors
Thermal shutdown and current-limit protection
Create a custom design using the LM2594HV with the WEBENCH Power Designer

Specifications

Vin (min) (V)	4.5	Vin (max) (V)	60
Vout (min) (V)	3.3	Vout (max) (V)	37
Iout (max) (A)	0.5	Iq (typ) (mA)	5
Switching frequency (min) (kHz)	110	Switching frequency (max) (kHz)	173
Features	Enable, Over Current Protection	Operating temperature range (°C)	-40 to 125
Rating	Catalog	Regulated outputs (#)	1
Control mode	Voltage mode	Duty cycle (max) (%)	100
Type	Converter	feature-type	Inverting\|Step Down
feature-isolation		feature-process-technology
feature-output-type	Fixed	feature-switching-frequency-khz	173
feature-number-of-outputs	1	feature-output-voltage-v	5
feature-maximum-output-current-a	0.5	feature-maximum-output-power-w
feature-minimum-input-voltage-v	4.5	feature-maximum-input-voltage-v	60
feature-typical-switch-current-a		feature-efficiency-	82(Typ)
feature-packaging	Tube	feature-rad-hard
feature-pin-count	8	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