XL2010规格书(官方版)

2023年12月31日发(作者：汉兰达2018款图片)

3.5A 180KHz 36V Buck DC to DC Converter With CV/CC Loop XL2010

Features

n Wide 8V to 36V Input Voltage Range

n Output Adjustable from 1.25V to 32V

n Maximum Duty Cycle 100%

n Minimum Drop Out 0.3V

General Description

The XL2010 is a 180 KHz fixed frequency

PWM buck (step-down) DC/DC converter,

capable of driving a 3.5A load with high

efficiency, low ripple and excellent line and

load regulation. Requiring a minimum

number of external components, the regulator

is simple to use and include internal

frequency compensation and a

fixed-frequency oscillator.

The PWM control circuit is able to adjust the

duty ratio linearly from 0 to 100%. An over

current protection function is built inside.

When short protection function happens, the

operation frequency will be reduced from

180KHz to 48KHz. An internal compensation

block is built in to minimize external

component count.

n Fixed 180KHz Switching Frequency

n Maximum 3.5A Switching Current

n Internal Optimize Power MOSFET

n

High efficiency

n Excellent line and load regulation

n With output constant current loop

n

Built in thermal shutdown function

n

Built in current limit function

n

Built in output short protection function

n

SOP8-EP package

Applications

n

n

n

n

n

Car Charger

Battery Charger

LCD Monitor and LCD TV

Portable instrument power supply

Telecom / Networking Equipment

Figure1. Package Type of XL2010

Rev 1.1

1

3.5A 180KHz 36V Buck DC to DC Converter With CV/CC Loop XL2010

Pin Configurations

The Exposed PAD is SW

Figure2. Pin Configuration of XL2010 (Top View)

Table 1 Pin Description

Pin Number

1

2

Pin Name

NC

SW

Description

No Connected.

Power Switch Output Pin (SW). SW is the switch node that

supplies power to the output.

(Note: Connected the back exposed PAD to SW.)

Ground Pin. Care must be taken in layout. This pin should be

placed outside of the Schottky Diode to output capacitor

ground path to prevent switching current spikes from inducing

voltage noise into XL2010.

Feedback Pin (FB). Through an external resistor divider

network, FB senses the output voltage and regulates it. The

feedback threshold voltage is 1.25V.

Enable Pin. Drive EN pin low to turn off the device, drive it

high to turn it on.

Output Constant Current Set Pin.

Internal Voltage Regulator Bypass Capacity. In typical system

application, The VC pin connect a 1uf capacity to VIN.

Supply Voltage Input Pin. XL2010 operates from a 8V to 36V

DC voltage. Bypass Vin to GND with a suitably large

capacitor to eliminate noise on the input.

3 GND

4

5

6

7

8

FB

EN

OCSET

VC

VIN

Rev 1.1

2

3.5A 180KHz 36V Buck DC to DC Converter With CV/CC Loop XL2010

Function Block

Figure3. Function Block Diagram of XL2010

Typical Application Circuit

Figure4. XL2010 Typical Application Circuit (VIN=8V~36V, VOUT=5V/3.1A)

Rev 1.1

3

3.5A 180KHz 36V Buck DC to DC Converter With CV/CC Loop XL2010

Ordering Information

Temperature

Package

Range

Part Number

Lead Free

XL2010E1

Marking ID

Lead Free

XL2010E1

Packing Type

2500 Units on Tape & Reel

XLSEMI Pb-free products, as designated with “E1” suffix in the par number, are RoHS compliant.

Absolute Maximum Ratings（Note1）

Parameter

Input Voltage

Feedback Pin Voltage

Output Switch Pin Voltage

Power Dissipation

Thermal Resistance (SOP8-EP)

(Junction to Ambient, No Heatsink, Free Air)

Operating Junction Temperature

Storage Temperature

Lead Temperature (Soldering, 10 sec)

ESD (HBM)

Symbol

Vin

VFB

VOutput

PD

RJA

TJ

TSTG

TLEAD

Value

-0.3 to 40

-0.3 to Vin

-0.3 to Vin

Internally limited

60

-40 to 125

-65 to 150

260

>2000

Unit

V

V

V

mW

?C/W

?C

?C

?C

V

Note1: Stresses greater than those listed under Maximum Ratings may cause permanent damage

to the device. This is a stress rating only and functional operation of the device at these or any

other conditions above those indicated in the operation is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect reliability.

Rev 1.1

4

3.5A 180KHz 36V Buck DC to DC Converter With CV/CC Loop XL2010

XL2010 Electrical Characteristics

Ta = 25℃;unless otherwise specified.

Symbol Parameter Test Condition Min. Typ. Max. Unit

System parameters test circuit figure4

VFB

Efficiency

Feedback

Voltage

Vin = 8V to 36V, Vout=5V

Iload=0.5A to 3.5A

Vin=12V ,Vout=5V

Iout=3.1A

1.225 1.25 1.275

- 87 -

V

%

?

Electrical Characteristics (DC Parameters)

Vin = 12V, GND=0V, Vin & GND parallel connect a 100uf/50V capacitor; Iout=500mA, Ta =

25℃; the others floating unless otherwise specified.

Parameters

Input operation voltage

Quiescent Supply Current

Oscillator Frequency

Output Short Frequency

Switch Current Limit

EN Pin Threshold

Max. Duty Cycle

Output Power PMOS

Symbol

Vin

Iq

Fosc

Fosp

IL

VEN

DMAX

Rdson

Test Condition

VFB =Vin

VFB =0

High (Regulator ON)

Low (Regulator OFF)

VFB=0V

VFB=0V, Vin=12V,

ISW=3.5A

Min. Typ. Max.

8

144

2.1

180

48

5

1.7

1.1

100

60

36

5

216

80

Unit

V

mA

KHz

KHz

A

V

%

mohm

Rev 1.1

5

3.5A 180KHz 36V Buck DC to DC Converter With CV/CC Loop XL2010

Typical System Application (VOUT=5V/3.1A)

Figure5. XL2010 System Parameters Test Circuit (VIN=8V~36V, VOUT=5V/3.1A)

Output voltage VS Output current5.55.04.54.0Output

voltage(V)3.53.02.52.01.51.00.50.00.00.20.40.60.81.01.21.41.61.82.02.22.42.62.83.03.23.43.6 VIN=12V,VOUT=5V,RCS=19K VIN=24V,VOUT=5V,RCS=19KOutput current(A)

Figure6. XL2010 System Output Constant Current Curve

Rev 1.1

6

3.5A 180KHz 36V Buck DC to DC Converter With CV/CC Loop XL2010

Efficiency VS Load current1Efficiency(%)75700.00.20.40.60.81.01.21.41.61.82.02.22.42.62.83.03.23.4 Vin=8V,Vout=5V Vin=12V,Vout=5V Vin=24V,Vout=5V Vin=36V,Vout=5VLoad current(A)

Figure7. XL2010 System Efficiency Curve

Output current VS RCS3.43.23.02.82.62.42.22.01.81.61.41.21.00.80.60.40.20.002468

Output

current(A) VIN=12V,VOUT=5V VIN=24V,VOUT=5VIOUT=1.0A,RCS=5KIOUT=2.1A,RCS=11KIOUT=3.1A,RCS=19K1RCS(Kohm)

Figure8. RCS VS Output Current Select Curve

Rev 1.1

7

3.5A 180KHz 36V Buck DC to DC Converter With CV/CC Loop XL2010

Schottky Diode Selection Table

Current Surface

Mount

1A

3A

√

√

5A

√

√

√

√

√

1N5823

SR502

SB520

SK52

1N5824

SR503

SB530

SK53

50WQ03

1N5825

SR504

SB540

SK54

SR505

SB550

SK55

SR506

SB560

SK56

√

√

√

√

1N5820

MBR320

SK32

SR302

1N5821

MBR330

SK33

30WQ03

31DQ03

SR303

1N5822

SK34

SK35

MBR360

SK36

SR306

MBR340 MBR350

30WQ04

30WQ05

31DQ04 31DQ05

SR304 SR305

Through VR (The same as system maximum input voltage)

Hole

20V 30V 40V 50V 60V

1N5817 1N5818 1N5819

√

50WQ04 50WQ05

Rev 1.1

8

3.5A 180KHz 36V Buck DC to DC Converter With CV/CC Loop XL2010

Package Information

Package Information (SOP8-EP)

Rev 1.1

9

3.5A 180KHz 36V Buck DC to DC Converter With CV/CC Loop XL2010

Features

n Wide 8V to 36V Input Voltage Range

n Output Adjustable from 1.25V to 32V

n Maximum Duty Cycle 100%

n Minimum Drop Out 0.3V

n Fixed 180KHz Switching Frequency

n Maximum 3.5A Switching Current

n Internal Optimize Power MOSFET

n

High efficiency

n Excellent line and load regulation

n With output constant current loop

n

Built in thermal shutdown function

n

Built in current limit function

n

Built in output short protection function

n

SOP8-EP package

General Description

The XL2010 is a 180 KHz fixed frequency

PWM buck (step-down) DC/DC converter,

capable of driving a 3.5A load with high

efficiency, low ripple and excellent line and

load regulation. Requiring a minimum

number of external components, the regulator

is simple to use and include internal

frequency compensation and a

fixed-frequency oscillator.

The PWM control circuit is able to adjust the

duty ratio linearly from 0 to 100%. An over

current protection function is built inside.

When short protection function happens, the

operation frequency will be reduced from

180KHz to 48KHz. An internal compensation

block is built in to minimize external