Analog Microelectronics AME8807BEHA, AME8807AEHA Datasheet

Analog Microelectronics, Inc.

AME8807

nn

n General Description

nn

The AME8807 family of positive, linear regulators fea­ture low quiescent current (30µA typ.) with low dropout
voltage, making them ideal for battery applications. The
space-saving SO-8 package is attractive for "Pocket”
and "Hand Held" applications.

These rugged devices have both Thermal Shutdown,
and Current Fold-back to prevent device failure under
the "Worst" of operating conditions.

The AME8807 is stable with an output capacitance of

2.2µF or greater .

nn

n Functional Block Diagram

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IN

OUT

600mA CMOS LDO

nn

n Features

nn

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
l Short Circuit Current Fold-back
l Power-Saving Shutdown Mode
l Space-Saving SO-8 Package
l User Adjustable Output Voltages
l Low Temperature Coefficient

nn

n Applications

nn

l Instrumentation
l Portable Electronics
l Wireless Devices
l Cordless Phones
l PC Peripherals
l Battery Powered Widgets
l Electronic Scales

EN

PG

V

ref

V

x110%

x90%

ref

Overcurrent

Shutdown

Thermal

Shutdown

V

AMP

=1.215V

ref

ADJ

GND

nn

n T ypical Application

nn

IN

C1

5V

V
C2 is unnecessary if R1 or R2 < 20kohms

1

= 1.215 ( R1/R2 +1 )

OUT

EN
IN

AME8807

PG

GND

µ

F

OUT

ADJ

R1

R2

C2

100p

OUT

C3

2.2

µ

1

F

Analog Microelectronics, Inc.

AME8807

nn

n Pin Configuration

nn

SO-8 Top View

IN
GND
GND

EN

AME8807AEHA AME8807BEHA

nn

n Ordering Information

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OUT
GND
GND

ADJ

SO-8 Top View

OUT

ADJ

GND

NC

600mA CMOS LDO

IN
NC
NC
EN

Part Numb er Marking Output Volta ge Package Opera ting Te m p. Range

8807

AME8807AEHA

AME8807BEHA

Pleas e c ons ult A M E s ales office or authoriz ed Rep. /Dis t ributor for other pack age ty pe availabilit y .

AEHA

yyww

8807

BEHA

yyww

Adjustable SO -8

Adjustable SO -8

O

C to +85OC

-40

O

C to +85OC

-40

2

Analog Microelectronics, Inc.

AME8807

A b solut e Maximum Ratings:

nnnn

Input Voltage

Output Current

Output V ol t age

ESD Classification

R ecom m ended operating Condi tions:

nnnn

Parame ter

Parame ter

Maximum Unit

8V

PD / (VIN - VO)

GND - 0.3 to V

Rating Unit

IN

B

+ 0.3 V

600mA CMOS LDO

A

Am bient Temperature Range

Junct ion Temperature

Thermal Information

nnnn

Parameter Package Maximum Unit

8807AEHA 124

Thermal Resistance (

Internal Power Dis sipation (P

Max i m um Junc tion Temperature 150

Max i m um Lead Temperature ( 10 Sec ) 300

)

θ

ja

8807BEHA 124

8807AEHA 810

) (∆T = 10 0oC)

D

8807BEHA 810

-40 to +85

-40 to +125

o

C

o

C

o

C / W

mW

o

C

o

C

Caution: S tress above the li sted abs olute rating m ay c aus e permanent dam age t o the device

3

Analog Microelectronics, Inc.

AME8807

nn

n Electrical Specifications

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TA = 25oC unless otherwise noted

Parameter Symbol Min Typ Max Units

Input Voltage V
Output Voltage Accuracy V

Dropout Voltage V

Output Current I
Current Limit I
Short Circu it Current I
Quiescent Current I
Ground Pin Current I

Line Regulation

Load Regulatio n REG

IN

O

DROPOUT

O

LIM

SC

Q

GND

REG

LINE

LOAD

I

O

V

O=VONOM

IO=5mA

V

IN=VO

Over Temerat ure S h utdown OTS 150
Over Temerature Hysteris is OTH 30
V

Temperatur e Coefficien t TC 30

O

I

Powe r Supply Rejec ti on

PSRR f=10kHz 20 dB

O

C

Test Condition

I

O

=600mA

-2.0%

V

O

V

O

V

O

I

O

=1mA to 600mA

I

O

+1 to VO+2

I

=1mA to 600mA

O

=100mA

=2.2µF

O

=1mA

1.5V<V

2.0 V<V

2.8 V<V
>1.2V
>1.2V
<0.8V

=0mA

<=2.0V 1400

O(NOM)

<=2.8V 800

O(NOM)

<3.8V 600

O(NOM)

V

< 2.0V 0.1 5 %

O

>= 2.0V 0.0 2 0.1 %

V

O

f=1kHz 50

f=100kHz 15

600mA CMOS LDO

Note 1 8 V

-1.5 1.5 %

See

chart

600 mA
600 800 mA

300 600 mA

30 50
30 50

0.2 1 %

mV

µ
µ

ppm/

A
A

o

C

o

C

o

C

Output V ol tage Noise eN

ADJ Input Bias Current I
ADJ Reference Voltage V

EN Input Threshold

EN Input Bias Current

Shutdown Suppl y Current I
Note1:V

IN(min)=VOUT+VDROPOUT

4

ADJ

V

V

I

REF

EH

EH

I

EL

SD

f=10Hz to 100kHz

I

=10mA

O

Co=2.2µF30

Vrms

Co=100µF20

0.0 2 0.0 4

µ

µ

A

1.203 1.215 1.227 V

V

=2.7V to 8V

IN

V

EL

V

V

V

=2.7V to 8V

IN

, VIN=2.7V to 8V

EN=VIN

=0V, VIN=2.7V to 8V

EN

=5V, VO=0V, VEN<V

IN

EL

2.0 Vin V

00.4V

0.1

0.5

0.5 1

A

µ

A

µ

A

µ

Analog Microelectronics, Inc.

AME8807

nn

n Detailed Description

nn

The AME8807 family of CMOS regulators contain a
PMOS pass transistor, voltage reference, error ampli­fier, over-current protection, and thermal shutdown.

The P-channel pass transistor receives data from the
error amplifier, over-current shutdown, and thermal pro­tection circuits. During normal operation, the error am­plifier compares the output voltage to a precision refer­ence. Over-current and Thermal shutdown circuits be­come active when the junction temperature exceeds
150oC, or the current exceeds 600mA. During thermal
shutdown, the output voltage remains low. Normal op­eration is restored when the junction temperature drops
below 120oC.

The AME8807 switches from voltage mode to current
mode when the load exceeds the rated output current.
This prevents over-stress. The AME8807 also incor­porates current foldback to reduce power dissipation
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.

600mA CMOS LDO

nn

n Enable

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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.

nn

n ADJ

nn

The ADJ pin is the positive input to the error amplifier
which, due to the pmos pass element inversion, means
it is actually the negative input of the LDO feedback loop.
The feedback works to keep the voltage at the ADJ pin

1.215V with respect to ground. Since the internal cir­cuitry at the ADJ pin is essentially an ESD protected
CMOS gate the input current at the ADJ pin is virtually
zero.

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n External Capacitors

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The AME8807 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 com­paratively 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 over­all 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.

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.

5

Analog Microelectronics, Inc.

AME8807

A)

µ

µµ

µ

Ground Current (

0.3

0.25

0.2

0.15

0.1

Drop Out Voltage (V)

0.05

Ground Current vs. Input Voltage

45
40
35
30
25
20
15
10

5
0

012345678

85OC

25OC

Input Voltage (V)

Drop Out Voltage vs. Output Voltage

I

=600mA

LOAD

0

2 2.5 3 3.5 4 4.5 5 5.5

Output Voltage (V)

600mA CMOS LDO

Load Step ( 1mA-600mA)

Output

CL=2.2µF

CIN=2.2

µ

F

I

(200mA/DIV) Vo(10mV/DIV)

L

I

0

-10

-20

CL=2.2µF Tantalum

-30

-40

-50

PSRR (dB)

-60

-70

-80

1.0E+01 1.0E+03 1.0E+05 1.0E+07

Load

TIME ( 20mS/DIV)

Power Supply Rejection Ratio

100mA

C

=0

BYP

100mA

100µA

100µA

Frequency (Hz)

10mA

1mA

0

Safe Operating Area

600

8807BEHA

100

Output Current (mA)

10

0.1

1.0

Input-Output Voltage Differential (V)

6

8807AEHA

8.0

Analog Microelectronics, Inc.

AME8807

Vo (1mV/ DIV)

(1V/DIV)

OUT

(200mA/DIV) V

OUT

I

Noise Measurement

CL = 2.2µF

NO FILTER

TIME (20mS/DIV)

Current Limit Response

C

=2.2µF

LOAD

C

=1.0µF

IN

R

=3.3

Ω

LOAD

V

=3.3V

OUTNOM

TIME (2mS/DIV)

Overtemperature Shutdown

(200mA/DIV)

OUT

(1V/DIV) I

OUT

V

(200mV/DIV)

OUT

(1V/DIV) I

OUT

V

600mA CMOS LDO

R

=6.6

LOAD

TIME (0.5Sec/DIV)

Short Circuit Response

C

=2.2µF

LOAD

=1µF

C

IN

<100m

R

LOAD

TIME (2mS/DIV)

Ω

0

Ω

0

Chip Enable Transient Response

CL=2µF
R

=10

Ω

L

Output (1V/DIV) Enable (2V/DIV)

TIME ( 1mS/DIV)

Line Transient Response

(1V/DIV)

0

IN

(10mV/DIV) V

0

V

OUT

TIME (200mS/DIV)

C

LOAD

I

LOAD

V

OUTDC

V

INDC

=2.2µF
=1mA

=3.3V

=4.5V

7

Analog Microelectronics, Inc.

AME8807

nn

n External Resistor Divider Table

nn

R1(kohm) 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00

Vout

1.30 14.29 28.59 42.88 57.18 71.47 85.76 100.06 114.35 128.65 142.94

1.35 9.00 18.00 27.00 36.00 45.00 54.00 63.00 72.00 81.00 90.00

1.40 6.57 13.14 19.70 26.27 32.84 39.41 45.97 52.54 59.11 65.68

1.45 5.17 10.34 15.51 20.68 25.85 31.02 36.19 41.36 46.53 51.70

1.50 4.26 8.53 12.79 17.05 21.32 25.58 29.84 34.11 38.37 42.63

1.55 3.63 7.25 10.88 14.51 18.13 21.76 25.39 29.01 32.64 36.27

1.60 3.16 6.31 9.47 12.62 15.78 18.94 22.09 25.25 28.40 31.56

1.65 2.79 5.59 8.38 11.17 13.97 16.76 19.55 22.34 25.14 27.93

1.70 2.51 5.01 7.52 10.02 12.53 15.03 17.54 20.04 22.55 25.05

1.75 2.27 4.54 6.81 9.08 11.36 13.63 15.90 18.17 20.44 22.71

1.80 2.08 4.15 6.23 8.31 10.38 12.46 14.54 16.62 18.69 20.77

1.85 1.91 3.83 5.74 7.65 9.57 11.48 13.39 15.31 17.22 19.13

1.90 1.77 3.55 5.32 7.09 8.87 10.64 12.42 14.19 15.96 17.74

1.95 1.65 3.31 4.96 6.61 8.27 9.92 11.57 13.22 14.88 16.53

2.00 1.55 3.10 4.64 6.19 7.74 9.29 10.83 12.38 13.93 15.48

2.05 1.46 2.91 4.37 5.82 7.28 8.73 10.19 11.64 13.10 14.55

2.10 1.37 2.75 4.12 5.49 6.86 8.24 9.61 10.98 12.36 13.73

2.15 1.30 2.60 3.90 5.20 6.50 7.80 9.10 10.40 11.70 12.99

2.20 1.23 2.47 3.70 4.93 6.17 7.40 8.63 9.87 11.10 12.34

2.25 1.17 2.35 3.52 4.70 5.87 7.04 8.22 9.39 10.57 11.74

2.30 1.12 2.24 3.36 4.48 5.60 6.72 7.84 8.96 10.08 11.20

2.35 1.07 2.14 3.21 4.28 5.35 6.42 7.49 8.56 9.63 10.70

2.40 1.03 2.05 3.08 4.10 5.13 6.15 7.18 8.20 9.23 10.25

2.45 0.98 1.97 2.95 3.94 4.92 5.90 6.89 7.87 8.85 9.84

2.50 0.95 1.89 2.84 3.78 4.73 5.67 6.62 7.56 8.51 9.46

2.55 0.91 1.82 2.73 3.64 4.55 5.46 6.37 7.28 8.19 9.10

2.60 0.88 1.75 2.63 3.51 4.39 5.26 6.14 7.02 7.90 8.77

2.65 0.85 1.69 2.54 3.39 4.23 5.08 5.93 6.77 7.62 8.47

2.70 0.82 1.64 2.45 3.27 4.09 4.91 5.73 6.55 7.36 8.18

2.75 0.79 1.58 2.37 3.17 3.96 4.75 5.54 6.33 7.12 7.92

2.80 0.77 1.53 2.30 3.07 3.83 4.60 5.37 6.13 6.90 7.67

2.85 0.74 1.49 2.23 2.97 3.72 4.46 5.20 5.94 6.69 7.43

2.90 0.72 1.44 2.16 2.88 3.61 4.33 5.05 5.77 6.49 7.21

2.95 0.70 1.40 2.10 2.80 3.50 4.20 4.90 5.60 6.30 7.00

3.00 0.68 1.36 2.04 2.72 3.40 4.08 4.76 5.45 6.13 6.81

3.05 0.66 1.32 1.99 2.65 3.31 3.97 4.63 5.30 5.96 6.62

3.10 0.64 1.29 1.93 2.58 3.22 3.87 4.51 5.16 5.80 6.45

R2(kohm)=(1.215*R1(kohm))/(Vout-1.215)

600mA CMOS LDO

8

Analog Microelectronics, Inc.

AME8807

nn

n External Resistor Divider Table (contd.)

nn

R1(kohm) 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00

Vout

3.15 0.63 1.26 1.88 2.51 3.14 3.77 4.40 5.02 5.65 6.28

3.20 0.61 1.22 1.84 2.45 3.06 3.67 4.28 4.90 5.51 6.12

3.25 0.60 1.19 1.79 2.39 2.99 3.58 4.18 4.78 5.37 5.97

3.30 0.58 1.17 1.75 2.33 2.91 3.50 4.08 4.66 5.24 5.83

3.35 0.57 1.14 1.71 2.28 2.85 3.41 3.98 4.55 5.12 5.69

3.40 0.56 1.11 1.67 2.22 2.78 3.34 3.89 4.45 5.00 5.56

3.45 0.54 1.09 1.63 2.17 2.72 3.26 3.81 4.35 4.89 5.44

3.50 0.53 1.06 1.60 2.13 2.66 3.19 3.72 4.25 4.79 5.32

3.55 0.52 1.04 1.56 2.08 2.60 3.12 3.64 4.16 4.68 5.20

3.60 0.51 1.02 1.53 2.04 2.55 3.06 3.57 4.08 4.58 5.09

3.65 0.50 1.00 1.50 2.00 2.49 2.99 3.49 3.99 4.49 4.99

3.70 0.49 0.98 1.47 1.96 2.44 2.93 3.42 3.91 4.40 4.89

3.75 0.48 0.96 1.44 1.92 2.40 2.88 3.36 3.83 4.31 4.79

3.80 0.47 0.94 1.41 1.88 2.35 2.82 3.29 3.76 4.23 4.70

3.85 0.46 0.92 1.38 1.84 2.31 2.77 3.23 3.69 4.15 4.61

3.90 0.45 0.91 1.36 1.81 2.26 2.72 3.17 3.62 4.07 4.53

3.95 0.44 0.89 1.33 1.78 2.22 2.67 3.11 3.55 4.00 4.44

4.00 0.44 0.87 1.31 1.75 2.18 2.62 3.05 3.49 3.93 4.36

4.05 0.43 0.86 1.29 1.71 2.14 2.57 3.00 3.43 3.86 4.29

4.10 0.42 0.84 1.26 1.68 2.11 2.53 2.95 3.37 3.79 4.21

4.15 0.41 0.83 1.24 1.66 2.07 2.48 2.90 3.31 3.73 4.14

4.20 0.41 0.81 1.22 1.63 2.04 2.44 2.85 3.26 3.66 4.07

4.25 0.40 0.80 1.20 1.60 2.00 2.40 2.80 3.20 3.60 4.00

4.30 0.39 0.79 1.18 1.58 1.97 2.36 2.76 3.15 3.54 3.94

4.35 0.39 0.78 1.16 1.55 1.94 2.33 2.71 3.10 3.49 3.88

4.40 0.38 0.76 1.14 1.53 1.91 2.29 2.67 3.05 3.43 3.81

4.45 0.38 0.75 1.13 1.50 1.88 2.25 2.63 3.00 3.38 3.76

4.50 0.37 0.74 1.11 1.48 1.85 2.22 2.59 2.96 3.33 3.70

4.55 0.36 0.73 1.09 1.46 1.82 2.19 2.55 2.91 3.28 3.64

4.60 0.36 0.72 1.08 1.44 1.79 2.15 2.51 2.87 3.23 3.59

4.65 0.35 0.71 1.06 1.41 1.77 2.12 2.48 2.83 3.18 3.54

4.70 0.35 0.70 1.05 1.39 1.74 2.09 2.44 2.79 3.14 3.49

4.75 0.34 0.69 1.03 1.37 1.72 2.06 2.41 2.75 3.09 3.44

4.80 0.34 0.68 1.02 1.36 1.69 2.03 2.37 2.71 3.05 3.39

4.85 0.33 0.67 1.00 1.34 1.67 2.01 2.34 2.67 3.01 3.34

4.90 0.33 0.66 0.99 1.32 1.65 1.98 2.31 2.64 2.97 3.30

4.95 0.33 0.65 0.98 1.30 1.63 1.95 2.28 2.60 2.93 3.25

5.00 0.32 0.64 0.96 1.28 1.61 1.93 2.25 2.57 2.89 3.21

R2(kohm)=(1.215*R1(kohm))/(Vout-1.215)

600mA CMOS LDO

9

Analog Microelectronics, Inc.

AME8807

nn

n Package Dimension

nn

SO-8

600mA CMOS LDO

SYMBOLS

A 1.35 1.75 0.053 0.069

A

1

A2

θ

B 0.33 0.51 0.013 0.020

C 0.19 0.25 0.007 0.010
D 4.80 5.00 0.189 0.1970
E 3.80 4.00 0.150 0.157

e
H 5.80 6.20 0.228 0.244
L 0.40 1.27 0.016 0.050

y

θθθθ

MILLIMETERS INCHES

MIN MAX MIN MAX

0.10 0.25 0.004 0.010

————

————

—

°

0

0.10 0.004

°

8

°

0

°

8

10

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E-Mail: [e-mail]

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-DS8807-C

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