EC8812NNBB7R [E-CMOS]

1.5A Low Dropout Linear Regulator;


型号：	EC8812NNBB7R
厂家：	E-CMOS Corporation
描述：	1.5A Low Dropout Linear Regulator
文件：	总10页 (文件大小：376K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

EC8812

1.5A Low Dropout Linear Regulator

General Description

Features

The EC8812 series of fixed output ultra low

dropout linear regulators are designed for portable

battery powered applications, which require low power

consumption and low dropout voltage. Each device

contains a bandgap voltage reference, an error amplifier,

a PMOS power transistor, and current limit and

temperature limit protection circuits.



Typical 150mV Dropout Voltage at 500mA.

Output Voltages：0.8V to 3.9V（0.1V Step）

Excellent Line and Load Regulation.

High Accuracy Output Voltage of 2%.

Ultra-Low Ground Current at 150μA (Typ.)

Thermal and Over-Current Protection.

Short Circuit Protection

Standard SOT-223 and TO-252 Package.

The EC8812 is designed to work with low cost

electrolytic and ceramic capacitors and requires a

minimum output capacitor of 10μF.

Applications



USB removable devices

MPEG4 devices

Wireless LAN’s

Hand-Held Instrumentation.

Portable DVD players

Digital camera

E-CMOS Corp. (www.ecmos.com.tw)

Page 1 of 10

5J19N-Rev.F002

EC8812

1.5A Low Dropout Linear Regulator

Typical Application

Pin Configurations

E-CMOS Corp. (www.ecmos.com.tw)

Page 2 of 10

5J19N-Rev.F002

EC8812

1.5A Low Dropout Linear Regulator

Pin Description

Pin Name

GND

Pin Function Description

Ground

OUT

Output Voltage

Input Voltage

Functional Block Diagram

Vin

Voltage

Reference

Vout

Short

Circuit

Protection

Over-

Temperature

Protection

Over-

Current

Protection

GND

E-CMOS Corp. (www.ecmos.com.tw)

Page 3 of 10

5J19N-Rev.F002

EC8812

1.5A Low Dropout Linear Regulator

Ordering Information

1. SOT223 Package

2. TO252-3L Package

E-CMOS Corp. (www.ecmos.com.tw)

Page 4 of 10

5J19N-Rev.F002

EC8812

1.5A Low Dropout Linear Regulator

Marking Information：

1. SOT223：

Device

Marking

Information

12NNA

Package Type

(Pin Type)

SOT223

Remarks

NN is Output Voltage(Ex：33=3.3V)

EC8812NNAB7R

EC8812NNBB7R

2. TO252-3L：

Device

(Pin Type：A Type) LLLLLL：Date Code

LLLLLL

NN is Output Voltage(Ex：33=3.3V)

12NNB

SOT223

(Pin Type：A Type) LLLLLL：Date Code

LLLLLL

Marking

Information

8812

Package Type

Remarks

(Pin Type)

EC881212A4TR

EC881215A4TR

EC881218A4TR

EC881225A4TR

EC881233A4TR

EC881212A4GR

EC881215A4GR

EC881218A4GR

EC881225A4GR

EC881233A4GR

12TYW

8812

15TYW

8812

TO252-3L

(T Type)

18TYW

8812

25TYW

8812

1. Y：Year code(D=2013;E=2014;

F=2015…)

33TYW

8812

2. W：Week Code(The big character of

A~Z is for the week of 1~26, and

small a~z is for the week of 27~52.)

12GYW

8812

15GYW

8812

TO252-3L

(G Type)

18GYW

8812

25GYW

8812

33GYW

E-CMOS Corp. (www.ecmos.com.tw)

Page 5 of 10

5J19N-Rev.F002

EC8812

1.5A Low Dropout Linear Regulator

Absolute Maximum Ratings

Parameter

Symbol

V_IN

Value

Units

Input Voltage

Output Voltage Range

Power Dissipation

V_OUT

P_D

-0.3 to V_IN

Internally Limited ⁽³⁾

Infinite

Output Short Circuit Duration

155(SOT-223)

90(TO-252)

260

Thermal Resistance, Junction-to-Ambient

Θ_JA

°C/W

Lead Temperature (Soldering, 5 sec.)

Junction Temperature Range

Storage Temperature Range

°C

T_J

-40 to +150

T_S

Recommended Operating Conditions

Parameter

Symbol

Value

Units

Supply Input Voltage Range

Junction Temperature Range

V_IN

T_J

-40 to +125

°C

E-CMOS Corp. (www.ecmos.com.tw)

Page 6 of 10

5J19N-Rev.F002

EC8812

1.5A Low Dropout Linear Regulator

Electrical Characteristics

（V_IN= 5V; C_IN= 10μF; C_OUT= 10μF; I_OUT= 10mA; T_J= 25°C; unless otherwise noted）

Symbol

Parameter

Test Conditions

Vout=1.2V

Min

1.176

1.47

1.764

2.45

3.234

Typ

Max

1.224

1.53

1.836

2.55

3.366

Unit

1.2

1.5

1.8

2.5

3.3

0.1

Vout=1.5V

V_OUT

Output Voltage Accuracy

Vout=1.8V

Vout=2.5V

Vout=3.3V

ΔV_OUT/V_OUT

Line Regulation

V_IN= (V_OUT+ 0.7)V to 5.5V

V_IN= (V_OUT+ 0.7)V

I_OUT= 10mA to 1500mA

%/V

Load Regulation ⁽⁵⁾

Output Voltage

ΔV_OUT/ΔT

V_IN– V_OUT

T_PROTECTION

Note 4

0.1

mV/°C

Temperature Coefficient

I_OUT= 150mA

I_OUT= 500mA

150

300

150

°C

μA

Dropout Voltage ⁽⁶⁾

I_OUT= 1000mA

Thermal Protection Temperature

Protection Hysterisys

I_OUT= 0mA

Thermal Protection

I_Q

Quiescent Current

Current Limit

150

2.5

I_LIMIT

I_short

Short Circuit Current

Vin=Vout+1V; Vout< 0.4V

0.55

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

Note 2: The device is not guaranteed to function outside its operating rating.

Note 3: The maximum allowable power dissipation at any T_A(ambient temperature) is calculated using: P_D(MAX)

= (T_J(MAX)– T_A)/Θ_JA. Exceeding the maximum allowable power dissipation will result in excessive die

temperature, and the regulator will go into thermal shutdown. See “Thermal Consideration” section

for details

Note 4: Output voltage temperature coefficient is the worst case voltage change divided by the total

temperature range.

Note 5: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts

are tested for load regulation in the load range from 0.1mA to 1200mA. Changes in output voltage

due to heating effects are covered by the thermal regulation specification.

Note 6: Dropout voltage is defined as the input to output differential at which the output voltage drops 2%

below its nominal value measured at 1V differential.

E-CMOS Corp. (www.ecmos.com.tw)

Page 7 of 10

5J19N-Rev.F002

EC8812

1.5A Low Dropout Linear Regulator

Typical Performance Characteristics

Reference Voltage vs. Temperature

Output Voltage vs. Load Current

0.84

0.82

0.8

3.340

3.320

3.300

3.280

3.260

3.240

3.220

3.200

0.78

0.76

0.74

0.72

0.7

90 100 110 120 130 140 150

0. 0. 0. 0. 0. 0. 0. 0. 0. 1 1. 1. 1. 1. 1. 1.

T (℃)

Load Current (A)

Output Voltage vs. Input Voltage

3.4

3.35

3.3

3.25

3.2

3.15

3.1

3.3

3.8

4.3

4.8

5.3

5.8

6.3

Input Voltage (V)

E-CMOS Corp. (www.ecmos.com.tw)

Page 8 of 10

5J19N-Rev.F002

EC8812

1.5A Low Dropout Linear Regulator

Applications Information

Application Hints

Thermal Considerations

Like any low dropout regulator, EC8812 requires It is important that the thermal limit of the package is

external capacitors to ensure stability. The external not exceeded. The EC8812 has built-in thermal

capacitors must be carefully selected to ensure protection. When the thermal limit is exceeded, the

performance.

IC will enter protection, and V_OUTwill be pulled to

ground. The power dissipation for given

Input Capacitor

An input capacitor of at least 10μF is required. application can be calculated as following:

Ceramic or Tantalum can be used. The value can be

increase without upper limit.

The power dissipation (P_D) is

P_D= I_OUT* [V_IN– V_OUT

]

Output Capacitor

An output capacitor is required for stability. It must

be placed no more than 1 cm away from the V_OUTpin, The thermal limit of the package is then limited to

and connected directly between V_OUTand GND pins. P_D(MAX)= [T_J– T_A]/Θ_JAwhere T_Jis the junction

The minimum value is 10μF but may be increase temperature, TA is the ambient temperature, and Θ_JA

without limit.

is around 155°C/W（SOT-223） for EC8812. The

EC8812 is designed to enter thermal protection at

170°C.

For example, if T_Ais 25°C then the

maximum P_Dis limited to about 0.94W. In other

words, if I_OUT(MAX)= 1200mA, then [V_IN– V_OUT] cannot

exceed 780mV.

E-CMOS Corp. (www.ecmos.com.tw)

Page 9 of 10

5J19N-Rev.F002

EC8812

1.5A Low Dropout Linear Regulator

Outline Drawing For SOT-223

Outline Drawing For TO252-3L

E-CMOS Corp. (www.ecmos.com.tw)

Page 10 of 10

5J19N-Rev.F002

EC8812NNBB7R [E-CMOS]

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