A6303 [AITSEMI]

LOW DROPOUT VOLTAGE REGULATOR;


型号：	A6303
厂家：	AiT Semiconductor
描述：	LOW DROPOUT VOLTAGE REGULATOR
文件：	总12页 (文件大小：616K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

A6303

AiT Semiconductor Inc.

www.ait-ic.com

LOW DROPOUT VOLTAGE REGULATOR

300mA HIGH PSRR, LINEAR REGULATOR, W.

OUTPUT DISCHARGE

DESCRIPTION

FEATURES



Output voltage range: 1.0V~4.5V (customized

on command every 0.1V step)

A6303 series is a group of positive voltage output, low

power consumption, low dropout voltage regulator.

A6303 can provide output value in the range of

1.0V~4.5V every 0.1V step. It also can be customized

on command. A6303 can also work under a wide

input voltage ranging from 2.0V to 6V.



Low power consumption: 35uA (Typ.)

Low output noise (47uVRMS)

Shutdown mode: 0.1uA

Low dropout voltage: 300mV@300mA (Typ.)

High ripple rejection:70dB@1kHz (Typ.)

Low temperature coefficient: ±100ppm/ °C

Excellent line regulation: 0.05%/V

Build-in 1.5k discharge resistor when CE low

Highly accurate: ±2%

A6303 includes high accuracy voltage reference,

error amplifier, current limit circuit and output driver

module.

A6303 has excellent load and line transient

response and good temperature characteristics,

which can assure the stability of chip and power

system. And it uses trimming technique to

guarantee output voltage accuracy within ±2%.

Output current limit

Fold-back output short circuit protection

Available in SOT-25, SC70-5 and DFN4(1x1)

packages

The A6303 is available in SOT-25, SC70-5 and

DFN4(1x1) packages.

APPLICATION



Power source for cellular phones and various

ORDERING INFORMATION

kind of PCSs



Battery Powered equipment

Power Management of MP3, PDA, DSC,

Mouse, PS2 Games

Package Type

Part Number

A6303E5R-XXA

A6303E5VR-XXA

A6303C5R-XX

A6303C5VR-XX

A6303J4R-XX

SOT-25

SPQ: 3,000pcs/Reel

SC70-5

SPQ: 3,000pcs/Reel

DFN4(1x1)

SPQ: 5,000pcs/Reel



Voltage Reference

Regulation after Switching Power

A6303J4VR-XX

TYPICAL APPLICATION

XX: Output Voltage

A:Type A

Note

V: Halogen free Package

R: Tape & Reel

AiT provides all RoHS free products

NOTE: Input capacitor (C_IN=1uF) and Output

capacitor (C_OUT=1uF) are recommended in all

application circuit.

REV1.7

- JAN 2008 RELEASED, JUN 2017 UPDATED -

- 1 -

A6303

AiT Semiconductor Inc.

www.ait-ic.com

LOW DROPOUT VOLTAGE REGULATOR

300mA HIGH PSRR, LINEAR REGULATOR, W.

OUTPUT DISCHARGE

PIN DESCRIPTION

Top View

Symbol

Top View

Function

Pin #

SOT-25

SC70-5

DFN4(1x1)

V_SS

V_IN

Ground Pin

Supply Voltage Input

Output Voltage

Chip Enable

V_OUT

No Connection

REV1.7

- JAN 2008 RELEASED, JUN 2017 UPDATED -

- 2 -

A6303

AiT Semiconductor Inc.

www.ait-ic.com

LOW DROPOUT VOLTAGE REGULATOR

300mA HIGH PSRR, LINEAR REGULATOR, W.

OUTPUT DISCHARGE

ABSOLUTE MAXIMUM RATINGS

Max Input Voltage

T_J, Operating Junction Temperature

Output Current

125°C

300mA

T_A, Ambient Temperature

SOT-23

-40°C ~85°C

250mW

SOT-25

250mW

Power Dissipation

SC-70-5

250mW

DFN4(1x1)

DFN4(1.2x1.6)

600mW

800mW

Ts, Storage Temperature

Lead Temperature & Time

-40°C ~150°C

260°C, 10s

Stress beyond above listed “Absolute Maximum Ratings” may lead permanent damage to the device. These are stress ratings only and

operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not

implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

NOTE1: Heat Sink Area of PCB for DFN4(1x1) is recommended at least 2.5mmx4mm

RECOMMENDED OPERATING CONDITIONS

Parameter

MIN

MAX

Units

Input Voltage Range

Ambient Temperature^NOTE2

-40

°C

NOTE2: The operation ambient temperature range is verified on several test samples. Not a test condition for volume production whose

test is only performed under 25°C.

REV1.7

- JAN 2008 RELEASED, JUN 2017 UPDATED -

- 3 -

A6303

AiT Semiconductor Inc.

www.ait-ic.com

LOW DROPOUT VOLTAGE REGULATOR

300mA HIGH PSRR, LINEAR REGULATOR, W.

OUTPUT DISCHARGE

ELECTRICAL CHARACTERISTICS

Test Conditions: C_IN=1uF, C_OUT=1uF, T_A=25^oC, unless otherwise noted.

A6303, For Arbitrary Output Voltage

Parameter

Input Voltage

Symbol

V_IN

Conditions

Min

Typ.

Max

Unit

V_OUT

x0.98

V_OUT

-0.03

300

V_OUT

x1.02

V_OUT

+0.03

V_OUT>1.5V

V_IN=Set V_OUT+1V

Output Voltage

V_OUT

1mA≦I_OUT≦30mA

V_OUT≤1.5V

Max Output Current

Dropout Voltage

I_OUT(Max)

V_IN- V_OUT=1V

I_OUT=100mA

I_OUT=300mA

100

300

150

400

NOTE3

V_DROP

V_OUT≥2.8V

ΔV_OUT

I_OUT=40mA

2.8V≤V_IN≤6V

Line Regulation

0.05

0.2

%/V

ΔV_{IN ×}V_OUT

V_IN=Set V_OUT+1V

1mA≤I_OUT≤300mA

V_IN=Set V_OUT+1V

Load Regulation

ΔV_OUT/ΔI_OUT

I_SS

Supply Current

(Standby)

I_STANDBY

V_IN=Set V_OUT+1V, V_CE= V_SS

0.1

1.0

ΔV_OUT

Output Voltage

Temperature Coefficient

I_OUT=30mA

±100

ppm/°C

ΔT _×V_OUT

f=1kHz, Ripple=0.5Vp-p

V_IN=Set V_OUT+1V

Ripple Rejection

PSRR

Current Limit

I_LIM

V_CEH

V_CEL

300

1.5

V_IN

0.25

CE Input Voltage “H”

CE Input Voltage “L”

Output Noise

BW=10Hz~100kHz

CE=0, V_OUT=3.0V

uV_RMS

Discharge Resistor

Rdischarge

1.5k

CE pin pull down

resistor

Rcepd

CE=V_IN=5V

500k

NOTE3: V_DROP=V_IN1-(V_OUT2*0.98) V_OUT2 is the output voltage when V_IN=V_OUT1+1.0V and I_OUT=300mA.

V_IN1 is the input voltage at which the output voltage becomes 98% of V_OUT1 after gradually decreasing the input voltage.

REV1.7

- JAN 2008 RELEASED, JUN 2017 UPDATED -

- 4 -

A6303

AiT Semiconductor Inc.

www.ait-ic.com

LOW DROPOUT VOLTAGE REGULATOR

300mA HIGH PSRR, LINEAR REGULATOR, W.

OUTPUT DISCHARGE

TYPICAL PERFORMANCE CHARACTERISTICS

T=25°C

Load Regulation, V_OUT=3.3V

Load Regulation, V_OUT=2.8V

Load Regulation, V_OUT=1.0V

Line Regulation, I_OUT=0mA

Quiescent Current, I_OUT=0mA,CE=high

Dropout Voltage, V_OUT=3.3V

REV1.7

- JAN 2008 RELEASED, JUN 2017 UPDATED -

- 5 -

A6303

AiT Semiconductor Inc.

www.ait-ic.com

LOW DROPOUT VOLTAGE REGULATOR

300mA HIGH PSRR, LINEAR REGULATOR, W.

OUTPUT DISCHARGE

Dropout Voltage

V_OUTTemperature Coefficient, V_OUT=3.3V

Line Transient Response,

_OUT=3.3V, I_OUT=20mA, Brown: V_IN; Red: V_OUT

10. Load Transient Response, V_IN=5V, V_OUT=3.3V,

_OUT=1~100mA, Green: I_OUT; Red: V_OUT

11. CE Chip Enable Response

REV1.7

- JAN 2008 RELEASED, JUN 2017 UPDATED -

- 6 -

A6303

AiT Semiconductor Inc.

www.ait-ic.com

LOW DROPOUT VOLTAGE REGULATOR

300mA HIGH PSRR, LINEAR REGULATOR, W.

OUTPUT DISCHARGE

BLOCK DIAGRAM

REV1.7

- JAN 2008 RELEASED, JUN 2017 UPDATED -

- 7 -

A6303

AiT Semiconductor Inc.

www.ait-ic.com

LOW DROPOUT VOLTAGE REGULATOR

300mA HIGH PSRR, LINEAR REGULATOR, W.

OUTPUT DISCHARGE

DETAILED INFORMATION

A6303 series is a group of positive voltage output, low noise, low power consumption, low dropout voltage

regulator.

A6303 can provide output value in the range of 1.0V~4.5V every 0.1V step. It also can be customized on

command.

A6303 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module.

A6303 has excellent load and line transient response and good temperature characteristics, which can assure

the stability of chip and power system. And it uses trimming technique to guarantee output voltage accuracy

within±2%.

REV1.7

- JAN 2008 RELEASED, JUN 2017 UPDATED -

- 8 -

A6303

AiT Semiconductor Inc.

www.ait-ic.com

LOW DROPOUT VOLTAGE REGULATOR

300mA HIGH PSRR, LINEAR REGULATOR, W.

OUTPUT DISCHARGE

PACKAGE INFORMATION

Dimension in SOT-25 (Unit: mm)

REV1.7

- JAN 2008 RELEASED, JUN 2017 UPDATED -

- 9 -

A6303

AiT Semiconductor Inc.

www.ait-ic.com

LOW DROPOUT VOLTAGE REGULATOR

300mA HIGH PSRR, LINEAR REGULATOR, W.

OUTPUT DISCHARGE

Dimension in SC70-5 (Unit: mm)

REV1.7

- JAN 2008 RELEASED, JUN 2017 UPDATED -

- 10 -

A6303

AiT Semiconductor Inc.

www.ait-ic.com

LOW DROPOUT VOLTAGE REGULATOR

300mA HIGH PSRR, LINEAR REGULATOR, W.

OUTPUT DISCHARGE

Dimension in DFN4 (1x1) (Unit: mm)

REV1.7

- JAN 2008 RELEASED, JUN 2017 UPDATED -

- 11 -

A6303

AiT Semiconductor Inc.

www.ait-ic.com

LOW DROPOUT VOLTAGE REGULATOR

300mA HIGH PSRR, LINEAR REGULATOR, W.

OUTPUT DISCHARGE

IMPORTANT NOTICE

AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to

discontinue any integrated circuit product or service without notice, and advises its customers to obtain the

latest version of relevant information to verify, before placing orders, that the information being relied on is

current.

AiT Semiconductor Inc.'s integrated circuit products are not designed, intended, authorized, or warranted to

be suitable for use in life support applications, devices or systems or other critical applications. Use of AiT

products in such applications is understood to be fully at the risk of the customer.

As used herein may

In order to

involve potential risks of death, personal injury, or server property, or environmental damage.

minimize risks associated with the customer's applications, the customer should provide adequate design and

operating safeguards.

AiT Semiconductor Inc. assumes to no liability to customer product design or application support. AiT

warrants the performance of its products of the specifications applicable at the time of sale.

REV1.7

- JAN 2008 RELEASED, JUN 2017 UPDATED -

- 12 -

A6303 [AITSEMI]

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