Advanced Monolithic Systems AMS3102 Service Manual

http://www.BDTIC.com/AMS

Advanced AMS3102
Monolithic 300mA LOW DROPOUT VOLTAGE REGULATOR
Systems

RoHS compliant

FEATURES APPLICATIONS

•••• Fixed and Adjustable Versions Available •••• Cellular Telephones

•••• Output Current in excess of 300mA •••• Portable Consumer Equipment

•••• Very Low Quiescent Current •••• Portable (Notebook) Computers

•••• Reverse Battery Protection •••• Battery Powered Systems

•••• Input-output Differential less than 0.6V •••• Portable Instrumentation

•••• Short Circuit Protection •••• Radio Control Systems

•••• Internal Thermal Overload Protection •••• CD/DVD drives

•••• Load Dump Protection

•••• Overvoltage Protection

•••• Mirror Image Insertion Protection

•••• ON/OFF Pin

••••External PNP Drive

GENERAL DESCRIPTION

AMS3102 series consists of positive fixed and adjustable voltage regulators ideally suited for use in battery-powered

The
systems. These devices feature very low quiescent current of 0.3mA or less when supplying 10mA loads. This unique
characteristic and the extremely low input-output differential required for proper regulation (0.25V for output currents of
100mA) make the AMS3102 ideal to use for standby power systems.

Internal circuitry of AMS3102 is protected from input fault conditions caused by reverse battery installation or input voltages
that exceed maximum rated input voltage. During line transients, such as load dump (40V) when the input voltage to the
regulator can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to
protect both internal circuits and the load. The AMS3102 series also includes internal current limiting, thermal shutdown, and is
able to withstand temporary power-up with mirror-image insertion.

The AMS3102 is offered in the 3-pin TO-92 package, SOT-89, 3 lead SOT-23, 5 lead SOT-23 and 8 lead SOIC packages. The
device is provided with On/Off pin in SOT-23 5L and in 8 lead SOIC package.

ORDERING INFORMATION

PUT PACKAGE TYPE TEMP.

OUT

VOLTAGE

FIXED AMS3102AN-X AMS3102AL-X AMS3102AM-X AMS3102AM1-X AMS3102AS-X -40ºC to 85ºC

AMS3102N-X AMS3102L-X AMS3102M-X AMS3102M1-X AMS3102S-X -40ºC to 85ºC

AMS3102ALR-X
AMS3102LR-X

ADJ. AMS3102CM1 AMS3102CS -40ºC to 85ºC
X = 2.0V, 2.5V, 3.0V, 3.3V, 3.5V, 4.0V, 5.0V.
R = Reverse pin-out option

updated April 24, 2009

TO-92 SOT-89 3L SOT-23 5L SOT-23 SO-8

RANGE

http://www.BDTIC.com/AMS

AMS3102

ABSOLUTE MAXIMUM RATINGS (Note 1)

Overvoltage Protection 24V to 40V

OPERATING RATINGS (Note 1)

Internal Power Dissipation (Note 4) Internally Limited Input Voltage Range 4V to 22V
Maximum Input Voltage 22V Junction Temperature
Storage Temperature

-65°C to +150°C

Lead Temperature (Soldering 25 sec)

ESD 2000V

ELECTRICAL CHARACTERISTICS

Electrical Characteristics at V

PARAMETER

Fixed Output Voltage Versions

Maximum Operating Input
Voltage

Output Voltage Tolerance -1.0 +1.0 -3.0 +3.0 %

Line Regulation

Load Regulation

Dropout Voltage

Quiescent Current

Output Noise Voltage

Output Impedance 100mADC and

Ripple Rejection fO =120Hz 55 80 80 dB

Maximum Line Transient

Reverse Polarity Input Voltage,
D/C

Reverse Polarity Input Voltage,
Transient

+1V, IO =10mA, TJ=25°C, C2 = 22µF unless otherwise specified.

N =VO

I

CONDITIONS

21 22 21 22 V

(VIN+1V) ≤VIN ≤21V, IO=100 mA

-40°C ≤T

(VIN+1V) ≤VIN ≤ 15V

9V ≤VIN ≤ 21V

5mA ≤I

5mA ≤10 ≤ 200 mA

I

O

I

O

I

O

I

O

I

O

10Hz-100kHz, C

10mA

RL = 500Ω, VO ≤ 5.5V

T = 1ms, τ ≤100ms

RL = 500Ω, T = 1ms, τ ≤100ms

≤125°C

J

≤ 100 mA

O

= 100 mA

= 200 mA

≤ 10 mA,

= 100 mA

≤ 200 mA (Note 5)

OUT

,100Hz=10kHz

rms

= 100µF

AMS3102A-X

Min. Typ. Max.

- 3.0

30

500 500

200 200

35 40 35 40 V

-35 -40 -35 -40 V

-35 -40 -35 -40 V

5

8

50

250

500

0.3

3

9

+ 3.0

10

30

50

70

300

600

0.5

4

12

AMS3102-X

Min. Typ. Max.

5

30

0.3

±±±± 5.0

8

50

300

500

3

9

+125°C

265°C

%

10

30

50

70

400

600

0.5

4

12

Units

mV

mV

mV

mV

mV

mV

mA

mA

mA

µV rms

mΩ

updated April 24, 2009

http://www.BDTIC.com/AMS

AMS3102

ELECTRICAL CHARACTERISTICS

Electrical Characteristics at V

PARAMETER

Adjustable Version

Reference Voltage

Output Voltage Range 2 20 V

Line Regulation

Load Regulation

Dropout Voltage

Quiescent Current

Output Noise Voltage 10Hz-100kHz 100

Output Impedance 100mADC and 10mA

Long Term Stability T =1000hr 0.4 %/1000hr

Ripple Rejection fO = 120Hz 0.02 dB

Maximum Operating Input
Voltage

Maximum Line Transient

Reverse Polarity Input Voltage,
D/C

Reverse Polarity Input Voltage,
Transient

On/Off Threshold Voltage

On

Off

On/Off Threshold Current V

Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. For guaranteed performance limits and associated test
conditions, see the Electrical Characteristics tables.

Note 2: To ensure constant junction temperature, low duty cycle pulse testing is used.
Note 3: Limits appearing in boldface type apply over the entire junction temperature range for operation. Limits appearing in normal type apply for

TA = TJ = 25°C.
Note 4: The maximum allowable power dissipation is a function of the maximum junction temperature TJ(MAX), the junction-to ambient thermal resistance

θ

and the ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is calculated using:

J-A

Where the value of the junction-to-ambient thermal resistance are as follows: 195°C/W for the TO-92 (N) package, 110°C/W for SOT-89 (L), 220°C/W for 5

ad SOT-23 (M1) and 160°C/W for the molded plastic SO-8 (S).

le

Note 5: Dropout Voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V

differential.

P(MAX)θ=

=6V, V

IN

1.210 1.235 1.26 V
IO ≤ 100 mA, -40°C ≤T

Measured from V

V

+ 1V ≤VIN ≤ 21V

OUT

5mA ≤IO ≤ 100 mA

5mA ≤IO ≤ 200 mA

I

≤ 10 mA

O

I

= 100 mA

O

I

= 200 mA (Note 5)

O

I

= 10 mA

O

I

= 100 mA

O

During Shutdown RL = 500Ω

IO = 10mA, Reference Voltage ≤ 1.5V

T = 1ms, τ ≤100ms

RL = 500Ω, VO ≥ -0.3V

RL = 500Ω, T = 1ms, τ ≤100ms

VO = 3V

= 2.4V 35 60

OFF

=3V IO =10mA, TJ=25°C, R1 =27k, C2 = 2µF unless otherwise specified.

OUT

CONDITIONS

(Note 2)

≤ 125°C, R1=27k,

J

to Adjust Pin

OUT

,100Hz=10kHz 40 200

rms

AJ

T-(MAX)T

A-J

Min.

1.20 1.235 1.270

.02 1.5 mV/V

0.3

35 40 V

-35 -40 V

-35 -40 V

2.5

AMS3102C

Typ.

1

50

300

500

0.3

3

0.3

21 22

1.8

2.0

Max.

1

2

200

400

600

0.5

4

0.5

1.5

Units

mV

mV

mV

mA

mA

mA

µV

mΩ

µA

V

%

%

rms

V

V

V

/V

updated April 24, 2009