LM2596HV [HTC]

60V, 3A, 150kHz, Step-down Switching Regulator;


型号：	LM2596HV
厂家：	HTC KOREA TAEJIN TECHNOLOGY CO.
描述：	60V, 3A, 150kHz, Step-down Switching Regulator
文件：	总9页 (文件大小：336K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

60V, 3A, 150kHz, Step-down Switching Regulator

LM2596HV

FEATURES

SOP-8PP PKG

 3.3V, 5V, 12V and Adjustable output versions

 Adjustable version output voltage range, 1.23V to 57V

 ±4% max over line and load condition

 Available in TO-220, TO-263 and SOP-8PP

 Guaranteed 3A output load current

 Input voltage range up to 60V

TO-263 PKG

TO-220 PKG

 Requires only 4 external components

 Excellent line and load regulation specifications

 150kHz fixed frequency internal oscillator

 Low power standby mode, I_STBtypically 30uA

 High efficiency

 Thermal shutdown and current limit protection

 Output short protection by reduction of frequency

by 3 times

ORDERING INFORMATION

Device

Package

LM2596HVGDP-ADJ

LM2596HVGDP-X.X

LM2596HVGR-ADJ

LM2596HVGR-X.X

LM2596HVGT-ADJ

LM2596HVGT-X.X

SOP-8PP

APPLICATION

 Simple high-efficiency step-down (buck) regulator

 Efficient pre-regulator for linear regulators

 On-card switching regulators

TO-263 5L

TO-220 5L

X.X = Output Voltage = 3.3, 5.0, 12

DESCRIPTION

The LM2596HV series of regulators are monolithic integrated circuits that provide all the active functions for a

step-down (buck) switching regulator, capable of driving a 3A load with excellent line and load regulation. These

devices are available in fixed output voltages of 3.3V, 5V, 12V, and an adjustable output version.

Available in a standard 5-lead TO-220 package and a 5-lead TO-263 surface mount package.

External shutdown is included, featuring typically 30 μA standby current. The output switch includes cycle-by-

cycle current limiting, as well as thermal shutdown, and protection from output short for full protection under fault

conditions.

Absolute Maximum Ratings ^{(Note 1)}

CHARACTERISTIC

SYMBOL

MIN.

MAX.

UNIT

Supply Voltage

V_IN

V_ON/OFF

V_FB

ON/OFF Pin Input Voltage

FB pin voltage

-0.3

-1

60 (or V_IN)

25 (or V_IN)

Output voltage to GND

V_OUT

T_STG

Storage Temperature Range

Maximum Junction Temperature Range

-65

150

℃

T_J,MAX

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HTC

60V, 3A, 150kHz, Step-down Switching Regulator

LM2596HV

Operating Ratings

CHARACTERISTIC

SYMBOL

V_IN

MIN.

4.5

MAX.

UNIT

Supply Voltage

Load Current

3.0

125

ILOAD

T_J

Temperature Range

-40

Ordering Information

VOUT

Package

Order No.

Description

Supplied As

Status

SOP-8PP-8L

TO-263-5L

TO-220-5L

SOP-8PP-8L

TO-263-5L

TO-220-5L

SOP-8PP-8L

TO-263-5L

TO-220-5L

SOP-8PP-8L

TO-263-5L

TO-220-5L

LM2596HVGDP-ADJ

LM2596HVGR-ADJ

LM2596HVGT-ADJ

LM2596HVGDP-3.3

LM2596HVGR-3.3

LM2596HVGT-3.3

LM2596HVGDP-5.0

LM2596HVGR-5.0

LM2596HVGT-5.0

LM2596HVGDP-12

LM2596HVGR-12

LM2596HVGT-12

3A, 150kHz, Adjustable

3A, 150kHz, Fixed

Reel

Tube

Reel

Tube

Reel

Tube

Reel

Tube

Active

ADJ

Active

3.3V

5.0V

12V

Active

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HTC

60V, 3A, 150kHz, Step-down Switching Regulator

LM2596HV

PIN CONFIGURATION

5. ON/OFF

4. FB/ADJ

3. GND

2. VOUT

1. VIN

5. ON/OFF

4. FB/ADJ

3. GND

2. VOUT

1. VIN

VIN 1.

VOUT 2.

FB/ADJ 3.

On/Off 4.

8. GND

7. GND

6. GND

5. GND

Exposed

PAD

SOP-8PP

TO-263-5L

TO-220-5L

PIN DESCRIPTION

TO-263 / TO-220 5 LEAD

Name Function

SOP-8PP 8 LEAD

Pin No.

Name

Function

VIN

Input Supply

VIN

Input Supply

Output Voltage

VOUT

Output Voltage

VOUT

Output Voltage

Feedback

GND

Ground

FB / ADJ

or Output Adjust

Output Voltage

Feedback

or Output Adjust

ON/OFF

Shutdown

FB / ADJ

ON/OFF

GND

ON/OFF

Shutdown

5 / 6 / 7 / 8

Ground

* Exposed Pad of SOP8-PP package should be externally connected to GND.

TYPICAL APPLICATION

- Fixed Output Voltage Version

LM2596HV

Input Voltage

Output Voltage

OUTPUT

VIN

Feed

back

ON/OFF

0.1uF

GND

C_OUT

1000uF

C_IN

100uF

0.1uF

- Adjustable Output Voltage Version

LM2596HV

Input Voltage

Output Voltage

OUTPUT

VIN

C_FF

(Option)

Feed

back

ON/OFF

0.1uF

GND

C_OUT

1000uF

C_IN

100uF

0.1uF

Feb. 2020 – R1.1

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HTC

60V, 3A, 150kHz, Step-down Switching Regulator

LM2596HV

ELECTRICAL CHARACTERISTICS

Unless specified otherwise, V_IN= 12V for the 3.3V, 5V and adjustable versions, I_LOAD= 0.5A, V_IN= 18V for 12V version.

The boldface type denotes the specifications, which apply over full operating temperature range T_J= -40 to +125°C.

PARAMETER

SYMBOL

TEST CONDITION ^{(Note 2)}

MIN.

TYP.

MAX.

UNIT

SYSTEM PARAMETERS ^{(Note 3)}

1.193

1.273

8V ≤ V_IN≤ 60V,

1.230

3.30

Feedback Voltage

V_FB

LM2596HV-ADJ

0.2A ≤ I_LOAD≤ 3A

1.180

1.285

3.185

3.432

5.5V ≤ V_IN≤ 60V,

0.2A ≤ I_LOAD≤ 3A

LM2596HV-3.3

LM2596HV-5.0

LM2596HV-12

3.152

3.465

4.825

5.20

8V ≤ V_IN≤ 60V,

5.00

Output Voltage

V_O

0.2A ≤ I_LOAD≤ 3A

4.775

5.25

11.58

12.48

15V ≤ V_IN≤ 60V,

0.2A ≤ I_LOAD≤ 3A

12.00

11.46

12.60

Line Reg

Load Reg

Line Regulation

Load Regulation

8 ≤ V_IN≤ 60V, I_LOAD= 0.2A

0.3

10mA ≤ I_LOAD≤ 3A, V_IN= 12V

V_IN=12V, I_LOAD=3A,

LM2596HV-ADJ

V_OUT= 5V

LM2596HV-3.3

LM2596HV-5.0

LM2596HV-12

V_IN=12V, I_LOAD=3A

Efficiency

V_IN=12V, I_LOAD=3A

V_IN=15V, I_LOAD=3A

DEVICE PARAMETERS

Quiescent Current

I_Q

V_FB=12V force driver off ^{(Note 6)}

-250

-70

Feedback Bias

Current

I_FB

V_FB=1.3V (Adjustable version only)

-450

220

280

168

180

Shutdown Supply

Current

I_STB

V_ON/OFF=5V, V_IN=60V

133

150

(Note 8)

Oscillator Frequency

F_OSC

KHz

120

Oscillator Frequency

of short Circuit Protect

When V_OUT< 40% from nominal,

I_OUT=CL ^{(Note 8)}

F_SCP

Max. duty Cycle

Min. duty Cycle

DC_(MAX.)

DC_(MIN.)

V_FB=0V force driver on ^{(Note 5)}

100

V_FB=12V force driver off

(V_FB=15V, For 12V Version)

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HTC

60V, 3A, 150kHz, Step-down Switching Regulator

LM2596HV

4.1

5.3

6.7

Peak Current. No outside circuit.

V_FB=0V ^{(Note 4, 8)}

Current Limit

V_SAT

I_L

3.8

7.0

1.35

1.50

I_OUT=3A. No outside circuit.

V_FB=0V ^{(Note 4)}

Saturation Voltage

1.70

Output Leakage

Current

V_OUT=0V. No outside circuit.

V_FB=12V ^{(Note 6, 7)}

-300

-30

0.6

-5

-50

-3

Output Leakage

Current

V_OUT=-1V. No outside circuit.

V_FB=12V ^{(Note 6, 7)}

I_L1

ON/OFF

V_TH

1.3

2.0

Input Threshold

I_H

V_ON/OFF=2.5V

V_ON/OFF=0.5V

T_J

-0.1

-0.01

160

ON/OFF

Input Current

I_L

-1

Thermal Shutdown

Temperature

T_SD

Note 1. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. 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.

Note 2, All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold type face).

Note 3, External components such as the schottky diode, inductor, input and output capacitors can affect switching regulator system

performance. When the 2596HV is used as shown in the Figure 2 test circuit, system performance will be as shown in system

parameters section of Electrical Characteristics.

Note 4. Output pin sourcing current. No diode, inductor or capacitor connected to output.

Note 5. Feedback pin removed from output and connected to 0V.

Note 6. Feedback pin removed from output and connected to +12V for the Adjustable, 3.3V, and 5V, versions, and +25V for the 12V and 15V

versions, to force the output transistor OFF.

Note 7. V_IN=60V.

Note 8. The oscillator frequency reduces to approximately 50KHz in the event of an output short or an overload which causes the regulated

output voltage to drop approximately 40% from the nominal output voltage. This self protections feature lowers the average power

dissipation of the IC by lowering the minimum duty cycle from 5% down to approximately 2%.

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HTC

60V, 3A, 150kHz, Step-down Switching Regulator

LM2596HV

TYPICAL OPERATING CHARACTERISTIC

Efficiency vs. IOUT

Load Regulation vs. IOUT

FOSC vs. TJ

Line Regulation vs. VIN

VOUT vs. TJ

VSAT vs. IOUT

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HTC

60V, 3A, 150kHz, Step-down Switching Regulator

LM2596HV

IQ vs. VIN

ISTB vs. VIN

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HTC

60V, 3A, 150kHz, Step-down Switching Regulator

LM2596HV

APPLICATION INFORMATION

As in any switching regulator, layout is very important. Rapidly switching currents associated with wiring

inductance generate voltage transients which can cause problems. For minimal inductance and ground loops,

the length of the wires should be kept as short as possible. Single-point grounding or ground plane

construction should be used for best results. Keep the feedback wiring away from the inductor flux

- Fixed Output Voltage Version

LM2596HV

Input Voltage

Output Voltage

OUTPUT

VIN

Feed

back

ON/OFF

0.1uF

GND

C_OUT

1000uF

C_IN

100uF

0.1uF

[Figure 1]

- Adjustable Output Voltage Version

LM2596HV

Input Voltage

Output Voltage

OUTPUT

VIN

C_FF

(Option)

Feed

back

ON/OFF

0.1uF

GND

C_OUT

1000uF

C_IN

100uF

0.1uF

[Figure 2]

V_OUT= V (1+

)

where V_FB= 1.23V, R1 between 1KΩ and 5KΩ.

Feb. 2020 – R1.1

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HTC

60V, 3A, 150kHz, Step-down Switching Regulator

LM2596HV

REVISION NOTICE

The description in this datasheet can be revised without any notice to describe its electrical characteristics

properly.

Feb. 2020 – R1.1

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HTC

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