AME8806IEHA_技术文档

Analog Microelectronics, Inc.

AME8806 / 8809 / 8842

600mA CMOS LDO

n General Description

n Features

The AME8806/8809 family of positive, linear regula-

tors feature low quiescent current (30µA typ.) with low

dropout voltage, making them ideal for battery applica-

tions. The space-saving SO-8 package is attractive for

"Pocket" and "Hand Held" applications.

l Very Low Dropout Voltage

l Guaranteed 600mA Output

l Accurate to within 1.5%

l 30µA Quiescent Current

l Over-Temperature Shutdown

l Current Limiting

These rugged devices have both Thermal Shutdown,

and Current Fold-back to prevent device failure under

the "Worst" of operating conditions.

l Short Circuit Current Fold-back

l Noise Reduction Bypass Capacitor

l Power-Saving Shutdown Mode

l Space-Saving SO-8 Package

l Factory Pre-set Output Voltages

l Low Temperature Coefficient

In applications requiring a low noise, regulated supply,

place a 1000 pF capacitor between Bypass and ground.

The AME8806/8809 is stable with an output capacitance

of 2.2µF or greater.

n Applications

l Instrumentation

l Portable Electronics

l Wireless Devices

l Cordless Phones

l PC Peripherals

n Functional Block Diagram

IN

OUT

l Battery Powered Widgets

l Electronic Scales

Overcurrent

Shutdown

n Typical Application

Thermal

Shutdown

OUT

IN

OUT

IN

EN

BYP

AME8806

AME8809

BYP

EN

GND

R1

R2

C2

C3

C1

AMP

5V

1µF

1 F

µ

2.2

µ

F

V

_ref=1.215V

GND

1

Analog Microelectronics, Inc.

600mA CMOS LDO

AME8806 / 8809 / 8842

n Pin Configuration

SO-8 Top View

IN

OUT

GND

BYP

EN

IN

GND

EN

OUT

BP

AME8809

AME8806

PG

IN

GND

OUT

EN

AME8842

2

Analog Microelectronics, Inc.

AME8806 / 8809 / 8842

600mA CMOS LDO

n Ordering Information

Part Number

Marking

Output Package Operating Temp.

8806

AEHA

yyww

8806

BEHA

yyww

8806

CEHA

yyww

8806

DEHA

yyww

8806

EEHA

yyww

8806

FEHA

yyww

8806

GEHA

yyww

8806

HEHA

yyww

8806

IEHA

yyww

8806

JEHA

yyww

8806

KEHA

yyww

8806

LEHA

yyww

8806

MEHA

yyww

8806

NEHA

yyww

8806

-40^OC to +85^OC

AME8806AEHA

3.3V

3.0V

2.8V

2.5V

3.8V

3.6V

3.5V

2.7V

3.4V

2.85V

3.7V

1.5V

1.8V

2.9V

3.1V

SO-8

-40^OC to +85^OC

AME8806BEHA

AME8806CEHA

AME8806DEHA

AME8806EEHA

AME8806FEHA

AME8806GEHA

AME8806HEHA

AME8806IEHA

AME8806JEHA

AME8806KEHA

AME8806LEHA

AME8806MEHA

AME8806NEHA

AME8806OEHA

OEHA

yyww

3

Analog Microelectronics, Inc.

600mA CMOS LDO

AME8806 / 8809 / 8842

n Ordering Information

Part Number

Marking

Output Package

Operating Temp.

8809

AEHA

yyww

8809

BEHA

yyww

8809

CEHA

yyww

8809

DEHA

yyww

8809

EEHA

yyww

8809

FEHA

yyww

8809

GEHA

yyww

8809

HEHA

yyww

8809

IEHA

yyww

8809

JEHA

yyww

8809

KEHA

yyww

8809

LEHA

yyww

8809

MEHA

yyww

8809

NEHA

yyww

8809

-40^OC to +85^OC

AME8809AEHA

3.3V

3.0V

2.8V

2.5V

3.8V

3.6V

3.5V

2.7V

3.4V

2.85V

3.7V

1.5V

1.8V

2.9V

3.1V

SO-8

AME8809BEHA

AME8809CEHA

AME8809DEHA

AME8809EEHA

AME8809FEHA

AME8809GEHA

AME8809HEHA

AME8809IEHA

AME8809JEHA

AME8809KEHA

AME8809LEHA

AME8809MEHA

AME8809NEHA

AME8809OEHA

OEHA

yyww

Please consult AME sales office or authorized Rep./Distributor

for other output voltage and package type availability.

4

Analog Microelectronics, Inc.

AME8806 / 8809 / 8842

600mA CMOS LDO

n Ordering Information

Part Number

Marking

Output

Package

Operating Temp.

8842

AEHA

yyww

8842

BEHA

yyww

8842

CEHA

yyww

8842

DEHA

yyww

8842

EEHA

yyww

8842

FEHA

yyww

8842

GEHA

yyww

8842

HEHA

yyww

8842

IEHA

yyww

8842

JEHA

yyww

8842

KEHA

yyww

8842

LEHA

yyww

8842

M EHA

yyww

8842

NEHA

yyww

8842

-40^OC to +85^OC

AME8842AEHA

3.3V

SO-8

AME8842BEHA

AME8842CEHA

AME8842DEHA

AME8842EEHA

AME8842FEHA

AME8842GEHA

AME8842HEHA

AME8842IEHA

AME8842JEHA

AME8842KEHA

AME8842LEHA

AME8842M EHA

AME8842NEHA

AME8842OEHA

3.0V

2.8V

2.5V

3.8V

3.6V

3.5V

2.7V

3.4V

2.85V

3.7V

1.5V

1.8V

2.9V

3.1V

SO-8

OEHA

yyww

Please consult AM E sales office or authorized Rep./Distributor

for other output voltage and package type availability.

5

Analog Microelectronics, Inc.

600mA CMOS LDO

AME8806 / 8809 / 8842

n Absolute Maximum Ratings

Parameter

Input Voltage

Maximum

Unit

V

8

Output Current

A

P_D/ (V_IN- V_O)

GND - 0.3 to V_IN+ 0.3

B

Input, Output Voltage

ESD Classification

V

n Recommended Operating Conditions

Parameter

Ambient Temperature Range

Junction Temperature

Rating

Unit

^oC

-40 to +85

-40 to +125

^oC

n Thermal Information

Parameter

Maximum

Unit

^oC / W

Thermal Resistance (

θ_ja

)

123.7

Internal Power Dissipation (P_D)

810

150

300

mW

^oC

( T = 100^oC)

∆

Maximum Junction Temperature

^oC

Maximum Lead Temperature ( 10 Sec)

Caution: Stress above the listed absolute rating may cause permanent damage to the device

6

Analog Microelectronics, Inc.

AME8806 / 8809 / 8842

600mA CMOS LDO

n Electrical Specifications

TA = 25^oC unless otherwise noted

Test Condition

Parameter

Input Voltage

Symbol

V_IN

Min

Typ Max Units

Note 1

-1.5

8

V

Output Voltage Accuracy

V_O

I_O=1mA

1.5

%

1.5V<V_O(NOM)<=2.0V

1400

800

600

I_O=600mA

See

chart

Dropout Voltage

V_DROPOUT

2.0V<V_O(NOM)<=2.8V

2.8V<V_O(NOM)<3.8V

mV

V_O=V_ONOM-2.0%

Output Current

I_O

I_LIM

I_SC

I_Q

V_O>1.2V

600

mA

Current Limit

V_O>1.2V

V_O<0.8V

800

300

30

Short Circuit Current

Quiescent Current

Ground Pin Current

600

50

I_O=0mA

A

µ

I_GND

I_O=1mA to 600mA

30

50

A

µ

V_O< 2.0V

0.15

0.1

1

%

I_O=5mA

V_IN=V_O+1 to V_O+2

Line Regulation

REG_LINE

V_O>= 2.0V

0.02

0.2

150

30

Load Regulation

REG_LOAD

OTS

I_O=1mA to 600mA

%

^oC

Over Temerature Shutdown

Over Temerature Hysterisis

V_OTemperature Coefficient

^oC

OTH

ppm/^oC

TC

30

f=1kHz

f=10kHz

f=100kHz

75

I_O=100mA

C =2.2 F ceramic

Power Supply Rejection

PSRR

55

dB

µ

O

C_BYP=0.01 F

µ

30

Co=2.2 F

30

f=10Hz to 100kHz

µ

Output Voltage Noise

EN Input Threshold

eN

Vrms

µ

I_O=10mA,C_BYP=0.01 F

µ

Co=100 F

20

µ

V_EH

V_EL

I_EH

V_IN=2.7V to 8V

2.0

0

Vin

0.4

0.1

0.5

1

V

V_IN=2.7V to 8V

V

_EN=V_IN, V_IN=2.7V to 8V

A

µ

EN Input Bias Current

I_EL

V_EN=0V, V_IN=2.7V to 8V

V_IN=5V, V_O=0V, V_EN<V_EL

A

µ

Shutdown Supply Current

I_SD

0.5

A

µ

Note1:V_IN(min)=V_OUT+V_DROPOUT

7

Analog Microelectronics, Inc.

600mA CMOS LDO

AME8806 / 8809 / 8842

n Detailed Description

The AME8806/8809 family of CMOS regulators con-

tain a PMOS pass transistor, voltage reference, error

amplifier, over-current protection, and thermal shut-

down.

A third capacitor can be connected between the BY-

PASS pin and GND. This capacitor can be a low cost

Polyester Film variety between the value of 0.001 ~

0.01µF. A larger capacitor improves the AC ripple re-

jection, but also makes the output come up slowly. This

"Soft" turn-on is desirable in some applications to limit

turn-on surges.

The P-channel pass transistor receives data from the

error amplifier, over-current shutdown, and thermal pro-

tection circuits. During normal operation, the error am-

plifier compares the output voltage to a precision refer-

ence. Over-current and Thermal shutdown circuits be-

come active when the junction temperature exceeds

All capacitors should be placed in close proximity to

the pins. A "Quiet" ground termination is desirable.

This can be achieved with a "Star" connection.

o

150 C, or the current exceeds 600mA. During thermal

shutdown, the output voltage remains low. Normal op-

eration is restored when the junction temperature drops

o

below 120 C.

n Enable

The Enable pin normally floats high. When actively,

pulled low, the PMOS pass transistor shuts off, and all

internal circuits are powered down. In this state, the

quiescent current is less than 1µA. This pin behaves

much like an electronic switch.

The AME8806/8809 switches from voltage mode to cur-

rent mode when the load exceeds the rated output cur-

rent. This prevents over-stress. The AME8806/8809

also incorporates current foldback to reduce power dis-

sipation when the output is short circuited. This feature

becomes active when the output drops below 0.8 volts,

and reduces the current flow by 65%. Full current is

restored when the voltage exceeds 0.8 volts.

n External Capacitors

The AME8806/8809 is stable with an output capacitor

to ground of 2.2µF or greater. Ceramic capacitors have

the lowest ESR, and will offer the best AC performance.

Conversely, Aluminum Electrolytic capacitors exhibit

the highest ESR, resulting in the poorest AC response.

Unfortunately, large value ceramic capacitors are com-

paratively expensive. One option is to parallel a 0.1µF

ceramic capacitor with a 10µF Aluminum Electrolytic.

The benefit is low ESR, high capacitance, and low over-

all cost.

A second capacitor is recommended between the input

and ground to stabilize Vin. The input capacitor should

be at least 0.1µF to have a beneficial effect.

8

Analog Microelectronics, Inc.

AME8806 / 8809 / 8842

600mA CMOS LDO

Load Step ( 1mA-600mA)

Ground Current vs. Input Voltage

45

40

35

30

25

20

15

10

5

Output

85^O

C

C_L=2.2

CIN=2.2

µF

25^O

C

I_Load

0

1

2

3

4

5

6

7

8

TIME ( 20mS/DIV)

Input Voltage (V)

Drop Out Voltage vs. Output Voltage

Power Supply Rejection Ratio

0

-10

-20

-30

-40

-50

-60

-70

-80

0.3

0.25

0.2

0.15

0.1

0.05

0

100mA

C _L=2.2

µ

F Tantalum

_BYP=0

I_{L O A D}=600mA

C

10mA

100mA

1mA

µ

100 A

µ

100 A

1.0E+01

1.0E+03

1.0E+05

1.0E+07

2

2.5

3

3.5

4

4.5

5

5.5

Output Voltage (V)

Frequency (Hz)

Power Supply Rejection Ratio

Safe Operating Area

-20

-30

-40

-50

-60

-70

-80

600

100mA

1mA

C_L=2.2

µF Tantalum

C

_BYP=1000pF

100mA

100

10mA

100µA

10

1.0

8.0

0.1

1.0E+01

1.0E+03

1.0E+05

1.0E+07

Input-Output Voltage Differential (V)

Frequency (Hz)

9

Analog Microelectronics, Inc.

600mA CMOS LDO

AME8806 / 8809 / 8842

Noise Measurement

Overtemperature Shutdown

C_L= 2.2µF

NO FILTER

0

R_{L O A D}=6.6

Ω

TIME (0.5Sec/DIV)

TIME (20mS/DIV)

Current Limit Response

Short Circuit Response

C_LOAD=2.2

C_IN=1

R_LOAD<100m

µF

F

Ω

µ

C_{L O A D}=2.2

_IN=1.0

_{L O A D}=3.3

V_{O U T N O M}=3.3V

µF

C

µF

R

Ω

TIME (2mS/DIV)

Line Transient Response

Chip Enable Transient Response

C_L=2

µF

R_L=10

Ω

C_{L O A D}=2.2µF

0

I

V

_{L O A D}=1mA

_{O U T D C}=3.3V

_INDC=4.5V

TIME (200mS/DIV)

TIME ( 1mS/DIV)

10

Analog Microelectronics, Inc.

AME8806 / 8809 / 8842

600mA CMOS LDO

n Package Dimension

SO-8

MILLIMETERS

INCHES

MIN

SYMBOLS

A

MIN

1.35

0.10

—

MAX

1.75

0.25

—

MAX

0.069

0.010

—

0.053

0.004

—

A

1

A2

B

C

D

E

e

0.33

0.19

4.80

3.80

—

0.51

0.25

5.00

4.00

—

0.013

0.007

0.189

0.150

—

0.020

0.010

0.1970

0.157

—

θ

H

L

y

5.80

0.40

—

0^°

6.20

1.27

0.10

8^°

0.228

0.016

0.244

0.050

0.004

8^°

0^°

θ

11

www.analogmicro.com

E-Mail: info@analogmicro.com

Life Support Policy:

These products of Analog Microelectronics, Inc. are not authorized for use as critical components in life-

support devices or systems, without the express written approval of the president

of Analog Microelectronics, Inc.

Analog Microelectronics, Inc. reserves the right to make changes in the circuitry and specifications of its

devices and advises its customers to obtain the latest version of relevant information.

Analog Microelectronics, Inc., August 2001

Document: 2006-DS8806/8809-D

Corporate Headquarters

Asia Pacific Headquarters

AME, Inc.

2F, 187 Kang-Chien Road, Nei-Hu District

Taipei 114, Taiwan, R.O.C.

Tel : 886 2 2627-8687

Analog Microelectronics, Inc.

3100 De La Cruz Blvd. Suite 201

Santa Clara, CA. 95054-2046

Tel : (408) 988-2388

Fax: (408) 988-2489

Fax: 886 2 2659-2989


型号：	AME8806IEHA
厂家：	ANALOG MICROELECTRONICS
描述：	600mA CMOS LDO 600毫安CMOS LDO
文件：	总12页 (文件大小：93K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

AME8806IEHA [AME]

相关型号：

AME8806IEHAZ

AME8806JEHA

AME8806JEHAZ

AME8806KEHA

AME8806KEHAZ

AME8806LEHA

AME8806LEHAZ

AME8806MEHA

AME8806MEHAZ

AME8806NEHA

AME8806NEHAZ

AME8806OEHA