EC4302|350mA/250mA Advanced Current Regulator


規格書下載


350mA/250mA Advanced Current Regulator

EC4302

 

 

 

General Description

 

The EC4302 is a low dropout current regulator rated for 350mA/250mA constant sink current. The constant sink current will ​​ ensure that the same amount of power is applied to the power LED and consequently maintain the uniform brightness throughout the possible voltage variations from the power source. The IC also features low quiescent current and is typically at 212uA. This will minimize the power consumption from the IC itself. The IC has EN function built-in for applications where EN function or Dim function is needed. Please contact us directly if EN function is required.

EC4302 is presently available in low profile SOT-89-3L ​​ and TO252 packages.

 

 

Features

 

● ​​ No external component required.

● ​​ Constant 350mA/250mA constant sink current.

● ​​ Output short / open circuit protection.

● ​​ Low dropout voltage.

● ​​ Low quiescent current at 212uA typical.

● ​​ Build-in thermal protection.

● ​​ Supply voltage range 2.7V ~ 6V.

● ​​ 2KV HBM ESD protection.

● ​​ Advanced CMOS process.

● ​​ SOT89 and TO252 package.

● ​​ EN function is available upon request.

 

 

Applications

 

● Power LED Driver.

● LED Flashlight Torch.

● LED Miner's Lamp.

● Lighting.

 

 

Pin Configurations

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

350mA/250mA Advanced Current Regulator

EC4302

 

 

Ordering Information

 

 

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ EC4302 NX XX X

 

R:Tape & Reel

 

A:350mA

B:250mA

 

 

B6:SOT89-3

A4:TO252

 

Part Number

Package

Marking

Marking Information

EC4302NAB6R

SOT89-3

​​ 

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ EC4302

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ LLLLLA

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ LLLLL:Lot No

EC4302NBB6R

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ EC4302

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ LLLLLB

EC4302NAA4R

TO252

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ EC4302

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ LLLLLA

EC4302NBA4R

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ EC4302

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ LLLLLB

 

 

 

 

 

 

 

Applications Diagrm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

350mA/250mA Advanced Current Regulator

EC4302

 

Absolute Maximum Ratings(1)

 

Parameter

Symbol

Maximum

Units

Input Voltage

VDD

-0.3~7V

V

Output Voltage

VOUT

-0.3 to 4.6

V

Output Sink Current

IOUT

400

mA

Thermal Resistance, Junction-to-Ambient(SOT89)

ΘJA

180

°C/W

Lead Temperature (Soldering, 5 sec.)

 

260

°C

 ​​​​ Junction Temperature

TJ

0 to +150

°C

Storage Temperature

TS

-40 to +150

°C

 

 

Electrical Characteristics

VDD = 3.7V; No Load; TJ = 25°C; unless otherwise noted

 

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Output Sink Current

ISINK

VOUT=0.4V

4302NA

300

350

400

mA

4302NB

200

250

300

Load Regulation

 

VOUT=0.2V to 3V

 

22

 

mA / V

Line Regulation

 

VDD=3V to 6V ,VOUT=0.2V

 

1.88

 

mA / V

Output Dropout Voltage(2)

VOUTL

​​ 

​​ 

150

 

mV

Supply Current Consumption

IDD

​​ 

​​ 

212

 

µA

 

Note 1: Exceeding the absolute maximum rating may damage the device.

Note 2: Output dropout voltage: 90% x IOUT @ VOUT=200mV

 

 

​​ Thermal Considerations

 

It is important that the thermal limit of the package is not exceeded. ​​ The EC4302 has built-in thermal protection. When the thermal limit is exceeded, the IC will enter protection, and VOUT will be pulled to ground .The power dissipation for a given application can be calculated as following:

 ​​ ​​ ​​ ​​ ​​ ​​​​ The power dissipation (PD) is PD = IOUT * [VIN – VOUT]

The thermal limit of the package is then limited to PD(MAX) = [TJ – TA]/ΘJA where TJ is the junction temperature ,TA is the ambient temperature, and ΘJA is around 180°C/W for EC4302. EC4302 is designed to enter thermal protection at 150°C. ​​ For example, if TA is 25°C then the maximum PD is limited to about 0.7W. ​​ In other words, if IOUT(MAX) = 350mA, then [VIN – VOUT] cannot exceed 2V.

 

 

 

 

 

 

 

 

 

 

 

Outline Drawing for SOT-89-3L

 

DIMENSIONS

DIMN

INCHES

MM

MIN

MAX

MIN

MAX

A

0.173

0.181

4.400

4.600

B

0.159

0.167

4.050

4.250

C

0.067

0.075

1.700

1.900

D

0.051

0.059

1.300

1.500

E

0.094

0.102

2.400

2.600

F

0.035

0.047

0.890

1.200

G

0.118REF

3.00REF

H

0.059REF

1.50REF

I

0.016

0.020

0.400

0.520

J

0.055

0.063

1.400

1.600

K

0.014

0.016

0.350

0.410

L

10°TYP

10°TYP

M

0.028REF

0.70REF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outline Drawing for TO252

 

 

 

 

 

 

 


規格書下載

規格是死的,設計是活的
我們提供具有靈活彈性的客製化IC與模組設計

告訴我們你想做的產品項目吧!

規格是死的,設計是活的
我們提供具有靈活彈性的客製化IC與模組設計

告訴我們你想做的產品項目吧!