LM2575TV-5G ON Semiconductor, LM2575TV-5G Datasheet

IC BUCK 5V 1A TO220-5

LM2575TV-5G

Manufacturer Part Number
LM2575TV-5G
Description
IC BUCK 5V 1A TO220-5
Manufacturer
ON Semiconductor
Type
Step-Down (Buck)r
Datasheet

Specifications of LM2575TV-5G

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
5V
Current - Output
1A
Frequency - Switching
52kHz
Voltage - Input
4.75 ~ 40 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-5 (Bent and Staggered Leads)
Output Voltage
5 V
Output Current
1 A
Input Voltage
4.75 V to 40 V
Switching Frequency
52 KHz
Operating Temperature Range
- 40 C to + 125 C
Mounting Style
Through Hole
Duty Cycle (max)
98 %
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
LM2575, NCV2575
1.0 A, Adjustable Output
Voltage, Step-Down
Switching Regulator
ideally suited for easy and convenient design of a step−down
switching regulator (buck converter). All circuits of this series are
capable of driving a 1.0 A load with excellent line and load regulation.
These devices are available in fixed output voltages of 3.3 V, 5.0 V,
12 V, 15 V, and an adjustable output version.
components to simplify the power supply design. Standard series of
inductors optimized for use with the LM2575 are offered by several
different inductor manufacturers.
efficiency is significantly higher in comparison with popular
three−terminal linear regulators, especially with higher input voltages.
In many cases, the power dissipated by the LM2575 regulator is so
low, that no heatsink is required or its size could be reduced
dramatically.
voltage within specified input voltages and output load conditions, and
±10% on the oscillator frequency (±2% over 0°C to 125°C). External
shutdown is included, featuring 80 mA typical standby current. The
output switch includes cycle−by−cycle current limiting, as well as
thermal shutdown for full protection under fault conditions.
Features
Applications
*For additional information on our Pb−Free strategy and soldering details, please
© Semiconductor Components Industries, LLC, 2009
June, 2009 − Rev. 11
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
The LM2575 series of regulators are monolithic integrated circuits
These regulators were designed to minimize the number of external
Since the LM2575 converter is a switch−mode power supply, its
The LM2575 features include a guaranteed ±4% tolerance on output
Maximum Over Line and Load Conditions
3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions
Adjustable Version Output Voltage Range of 1.23 V to 37 V ±4%
Guaranteed 1.0 A Output Current
Wide Input Voltage Range: 4.75 V to 40 V
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
Moisture Sensitivity Level (MSL) Equals 1
Pb−Free Packages are Available*
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
1
See detailed ordering and shipping information in the package
dimensions section on page 25 of this data sheet.
See general marking information in the device marking
section on page 26 of this data sheet.
Heatsink surface (shown as terminal 6 in
case outline drawing) is connected to Pin 3
DEVICE MARKING INFORMATION
1
Heatsink surface connected to Pin 3
1
1
ORDERING INFORMATION
5
5
http://onsemi.com
5
Pin
1. V
2. Output
3. Ground
4. Feedback
5. ON/OFF
Publication Order Number:
in
D2T SUFFIX
CASE 314D
CASE 936A
T SUFFIX
CASE 314B
TV SUFFIX
TO−220
D
TO−220
2
PAK
LM2575/D

Related parts for LM2575TV-5G

LM2575TV-5G Summary of contents

Page 1

... Negative Step−Up Converters • Power Supply for Battery Chargers *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. © Semiconductor Components Industries, LLC, 2009 June, 2009 − Rev. 11 http://onsemi.com ...

Page 2

Typical Application (Fixed Output Voltage Versions) 7 Unregulated DC Input 100 mF Representative Block Diagram and Typical Application Unregulated DC Input + Feedback R2 Fixed Gain Error Amplifier R1 Freq 1.0 ...

Page 3

OPERATING RATINGS (Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.) Rating Operating Junction Temperature Range Supply Voltage SYSTEM ...

Page 4

DEVICE PARAMETERS ELECTRICAL CHARACTERISTICS for the 12 V version, and for the 15 V version operating junction temperature range that applies [Note 2], unless otherwise noted.) Characteristics ALL OUTPUT VOLTAGE VERSIONS Feedback Bias Current ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS 0 200 mA Load 0.4 Normalized 25°C J 0.2 0 -0.2 -0.4 -0.6 -50 - JUNCTION TEMPERATURE (°C) J Figure 2. Normalized ...

Page 6

T = 25°C J 100 5 INPUT VOLTAGE (V) in Figure 8. Standby Quiescent Current 2 Normalized at 25°C 0 -2.0 -4.0 -6.0 ...

Page 7

V in Unregulated C 100 mF/ Input 8 Unregulated Input 100 mF/ any switching regulator, the ...

Page 8

PIN FUNCTION DESCRIPTION Pin Symbol 1 V This pin is the positive input supply for the LM2575 step−down switching regulator. In order to minimize in voltage transients and to supply the switching currents needed by the regulator, a suitable input ...

Page 9

V on(SW) Power Power Power Switch Switch Switch Power Off Off On Switch On V (FWD min Power Power Diode Diode Switch Switch Figure 16. Buck Converter Idealized Waveforms Time I (AV) Load Time http://onsemi.com 9 ...

Page 10

Procedure (Fixed Output Voltage Version) procedure and example is provided. Procedure Given Parameters Regulated Output Voltage (3 out V = Maximum DC Input Voltage in(max Maximum Load Current ...

Page 11

Procedure (Fixed Output Voltage Version) (continued) procedure and example is provided. Procedure 5. Output Capacitor Selection (C ) out A. Since the LM2575 is a forward−mode switching regulator with voltage mode control, its open loop 2−pole−2−zero frequency characteristic has the ...

Page 12

Procedure (Adjustable Output Version: LM2575−Adj) (continued) Procedure 4. Inductor Selection (L1) A. Use the following formula to calculate the inductor Volt x microsecond [V x ms] constant: V out out in V ...

Page 13

H1000 20 L680 15 10 L470 8.0 L330 7.0 L220 6.0 5.0 0.2 0.3 0.4 0 MAXIMUM LOAD CURRENT (A) L Figure 17. LM2575−3.3 60 H2200 40 H1500 30 H1000 L680 16 L470 ...

Page 14

Inductor Inductor Code Value L100 100 mH L150 150 mH L220 220 mH L330 330 mH L470 470 mH L680 680 mH H150 150 mH H220 220 mH H330 330 mH H470 470 mH H680 680 mH H1000 1000 mH ...

Page 15

... Renco Electronics Inc. AIE Magnetics Coilcraft Inc. Coilcraft Inc., Europe Tech 39 Schott Corp. Table 4. Diode Selection Guide gives an overview about both surface−mount and through−hole diodes for an effective design. Device listed in bold are available from ON Semiconductor. Schottky 1.0 A SMT THT V R ...

Page 16

Input Capacitor ( The Input Capacitor Should Have a Low ESR For stable operation of the switch mode converter a low ESR (Equivalent Series Resistance) aluminium or solid tantalum bypass capacitor is needed between the input pin and ...

Page 17

RFI (Radio Frequency Interference) and EMI (Electro−Magnetic Interference) problems. Continuous and Discontinuous Mode of Operation The LM2575 step−down converter can operate in both the continuous and the discontinuous modes of operation. The regulator works in the continuous mode ...

Page 18

Output Voltage Ripple and Transients Source of the Output Ripple Since the LM2575 is a switch mode power supply regulator, its output voltage, if left unfiltered, will contain a sawtooth ripple voltage at the switching frequency. The output ripple voltage ...

Page 19

(quiescent current) and V can be found in the Q sat LM2575 data sheet minimum input voltage applied the regulator output voltage, O ...

Page 20

Using a delayed startup arrangement, the input capacitor can charge higher voltage before the switch−mode regulator begins to operate. The high input current needed for startup is now partially supplied by the input capacitor ...

Page 21

If the input voltage is greater than −12 V, the output will rise above −12 V accordingly, but will not damage the regulator LM2575−12 in Feedback 1 Output 100 GND ON/OFF /50 ...

Page 22

LM2575−5 100 mF 5 ON/OFF 1N5242B Q1 2N3904 NOTE: This picture does not show the complete circuit. Figure 32. Undervoltage Lockout Circuit for ...

Page 23

THE LM2575−5.0 STEP−DOWN VOLTAGE REGULATOR WITH 5 1.0 A OUTPUT POWER CAPABILITY. TYPICAL APPLICATION WITH THROUGH−HOLE PC BOARD LAYOUT +V in Unregulated DC Input +7 + 100 mF /50 V ...

Page 24

THE LM2575−ADJ STEP−DOWN VOLTAGE REGULATOR WITH 8 1.0 A OUTPUT POWER CAPABILITY. TYPICAL APPLICATION WITH THROUGH−HOLE PC BOARD LAYOUT 4 Feedback Unregulated +V DC Input in LM2575−Adj + ...

Page 25

... LM2575TV−5G LM2575T−5G LM2575D2T−5G 5.0 V LM2575D2T−5R4G NCV2575D2T−5G NCV2575D2T−5R4G LM2575TV−012G LM2575T−012G LM2575D2T−012G 12 V LM2575D2T−12R4G NCV2575D2T−12G NCV2575D2T−12R4G †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D ...

Page 26

... ORDERING INFORMATION Nominal Output Voltage Device LM2575TV−015G LM2575T−015G 15 V LM2575D2T−015G LM2575D2T−15R4G †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. TO−220 TV SUFFIX CASE 314B LM 2575T− ...

Page 27

B −P− OPTIONAL Q CHAMFER 0.24 (0.610 0.10 (0.254 −Q− B1 DETAIL A 0.356 (0.014) M ...

Page 28

... Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein ...

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