LM2575HVT-ADJ/NOPB National Semiconductor, LM2575HVT-ADJ/NOPB Datasheet

IC REG SIMPLE SWITCHER TO-220-5

LM2575HVT-ADJ/NOPB

Manufacturer Part Number
LM2575HVT-ADJ/NOPB
Description
IC REG SIMPLE SWITCHER TO-220-5
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Down (Buck)r

Specifications of LM2575HVT-ADJ/NOPB

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
1.23 ~ 57 V
Current - Output
1A
Frequency - Switching
52kHz
Voltage - Input
4 ~ 60 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-5 (Straight Leads)
Current, Input Bias
50 nA
Current, Output
1 A
Current, Supply
10 mA
Frequency, Oscillator
52 kHz
Package Type
TO-220
Regulator Type
Buck (Step-Down)
Resistance, Thermal, Junction To Case
2 °C/W
Temperature, Operating, Range
-40 to +125 °C
Voltage, Input
60 V
Voltage, Output
1.23 to 37 V
Primary Input Voltage
60V
No. Of Outputs
1
Output Voltage
57V
Output Current
1A
No. Of Pins
5
Operating Temperature Range
-40°C To +125°C
Msl
MSL 1 - Unlimited
Filter Terminals
Through Hole
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / Rohs Status
RoHS Compliant part Electrostatic Device
Other names
*LM2575HVT-ADJ
*LM2575HVT-ADJ/NOPB
LM2575HVT-ADJ

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM2575HVT-ADJ/NOPB
Manufacturer:
TI/NS
Quantity:
114
Part Number:
LM2575HVT-ADJ/NOPB
Manufacturer:
TI/德州仪器
Quantity:
20 000
Company:
Part Number:
LM2575HVT-ADJ/NOPB
Quantity:
7 000
© 2007 National Semiconductor Corporation
LM1575/LM2575/LM2575HV
SIMPLE SWITCHER
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 avail-
able 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 re-
duces 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 pow-
er supplies.
Other features include a guaranteed ±4% tolerance on output
voltage within specified input voltages and output load con-
ditions, and ±10% on the oscillator frequency. External shut-
down 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 con-
ditions.
Typical Application
(Fixed Output Voltage Versions)
Note: Pin numbers are for the TO-220 package.
SIMPLE SWITCHER
®
is a registered trademark of National Semiconductor Corporation
11475
®
1A Step-Down Voltage Regulator
Features
Applications
3.3V, 5V, 12V, 15V, and adjustable output versions
Adjustable version output voltage range,
Guaranteed 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
Simple high-efficiency step-down (buck) regulator
Efficient pre-regulator for linear regulators
On-card switching regulators
Positive to negative converter (Buck-Boost)
+
1.23V to 37V (57V for HV version) ±4% max over
line and load conditions
Product Enhancement tested
1147501

Related parts for LM2575HVT-ADJ/NOPB

LM2575HVT-ADJ/NOPB Summary of contents

Page 1

... Typical Application (Fixed Output Voltage Versions) Note: Pin numbers are for the TO-220 package. SIMPLE SWITCHER ® registered trademark of National Semiconductor Corporation © 2007 National Semiconductor Corporation ® 1A Step-Down Voltage Regulator Features ■ 3.3V, 5V, 12V, 15V, and adjustable output versions ■ ...

Page 2

... LM1575J-5.0-QML LM1575J-12-QML LM1575J-15-QML LM1575J-ADJ-QML Standard Voltage Rating Voltage Rating (40V) LM2575HVT-3.3 LM2575HVT-5.0 LM2575HVT-12 LM2575HVT-15 LM2575HVT-ADJ LM2575HVT-3.3 Flow LB03 LM2575HVT-5.0 Flow LB03 LM2575HVT-12 Flow LB03 LM2575HVT-15 Flow LB03 LM2575HVT-ADJ Flow LB03 LM2575HVN-5.0 LM2575HVN-12 LM2575HVN-15 LM2575HVN-ADJ LM2575HVM-5.0 LM2575HVM-12 LM2575HVM-15 LM2575HVM-ADJ LM2575HVS-3.3 LM2575HVS-5.0 LM2575HVS-12 ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Maximum Supply Voltage LM1575/LM2575 LM2575HV ON /OFF Pin Input Voltage Output Voltage to Ground (Steady State) Power Dissipation Storage Temperature Range Maximum Junction Temperature LM1575-3 ...

Page 4

Symbol Parameter V Output Voltage 0.2A OUT LM2575HV 8V Circuit of Figure 2 η Efficiency V IN LM1575-12, LM2575-12, LM2575HV-12 Electrical Characteristics Specifications with standard type face are for T Range . Symbol Parameter SYSTEM PARAMETERS (Note 4) Test Circuit ...

Page 5

LM1575-ADJ, LM2575-ADJ, LM2575HV-ADJ Electrical Characteristics Specifications with standard type face are for T Range. Symbol Parameter SYSTEM PARAMETERS (Note 4) Test Circuit Figure 2 V Feedback Voltage V OUT IN V OUT Circuit of Figure 2 V Feedback Voltage 0.2A ...

Page 6

Symbol Parameter θ Thermal Resistance T Package, Junction to Ambient (Note 9) JA θ T Package, Junction to Ambient (Note 10) JA θ T Package, Junction to Case JC θ N Package, Junction to Ambient (Note 11) JA θ M ...

Page 7

... Molded DIP (N) Order Number LM2575N-5.0, LM2575HVN-5.0, LM2575N-12, LM2575HVN-12, LM2575N-15, LM2575HVN-15, LM2575N-ADJ or LM2575HVN-ADJ NS Package Number N16A 5-Lead TO-220 (T) Order Number LM2575T-3.3, LM2575HVT-3.3, LM2575T-5.0, LM2575HVT-5.0, LM2575T-12, LM2575HVT-12, LM2575T-15, LM2575HVT-15, LM2575T-ADJ or LM2575HVT-ADJ NS Package Number T05A 25 ...

Page 8

TO-263, Molded, 5-Lead Surface Mount Order Number LM2575S-3.3, LM2575HVS-3.3, LM2575S-5.0, LM2575HVS-5.0, LM2575S-12, LM2575HVS-12, LM2575S-15, LM2575HVS-15, LM2575S-ADJ or LM2575HVS-ADJ NS Package Number TS5B 26 ...

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