Advanced Monolithic Systems AMS3107 Service Manual

http://www.BDTIC.com/AMS

Advanced AMS3107
Monolithic 500mA LOW DROPOUT VOLTAGE REGULATOR
Systems

RoHS compliant

FEATURES APPLICATIONS

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

•••• Output Current up to 500mA •••• 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 •••• Automotive

•••• Overvoltage Protection

•••• Mirror Image Insertion Protection

•••• ON/OFF Pin

GENERAL DESCRIPTION

AMS3107 series consists of positive fixed and adjustable voltage regulators ideally suited for use in battery-powered systems.

The
These devices feature very low quiescent current of 0.8mA or less when supplying 50mA loads. This unique characteristic and the
extremely low input-output differential required for proper regulation (0.2V for output currents of 100mA) make the AMS3107
ideal to use for standby power systems.

Internal circuitry of AMS3107 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 AMS3107 series also includes internal current limiting, thermal shutdown, and is able to withstand
temporary power-up with mirror-image insertion.

The AMS3107 is offered in 3 lead TO-92, 8 lead SOIC, SOT-89, SOT-223 and TO-252 packages.

ORDERING INFORMATION

PUT PACKAGE TYPE TEMP.

OUT

VOLTAGE

FIXED AMS3107CN-X AMS3107CL-X AMS3107CD-X AMS3107C-X AMS3107CS-X -40ºC to +85 ºC

AMS3107N-X AMS3107L-X AMS3107D-X AMS3107-X AMS3107S-X -40ºC to +85 ºC

ADJ. AMS3107S -40ºC to +85 ºC

X = 2.0V, 2.5V, 3.0V, 3.3V, 3.5V, 4.0V, 5.0V.

3L TO-92 SOT-89 TO-252 SOT-223 SO-8

RANGE

updated April 24, 2009

http://www.BDTIC.com/AMS

AMS3107

ABSOLUTE MAXIMUM RATINGS (Note 1)

Input Voltage Maximum Junction Temperature
Operating 25V Storage Temperature

-65°C to +150°C

Overvoltage Protection 26V to 40V Lead Temperature (Soldering 25 sec)
Internal Power Dissipation (Note 4) Internally Limited ESD 2000V

ELECTRICAL CHARACTERISTICS

Electrical Characteristics at V

PARAMETER

Fixed Output Voltage Versions

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

=6.3V, IO =5mA, TJ=25°C, C2 = 22µF unless otherwise specified.

N

I

CONDITIONS

6.3V ≤VIN ≤25V, IO=100 mA

AMS3107C-X

Min. Typ. Max.

- 3.0

+ 3.0

AMS3107-X

Min. Typ. Max.

±±±± 5.0

+125°C

265°C

Units

%

Line Regulation

Load Regulation

Dropout Voltage

Quiescent Current

Output Noise Voltage

Output Bypass Capacitor

Ripple Rejection fO =120Hz 55 80 80 dB

Maximum Operational Input
Voltage

Maximum Line Transient

Reverse Polarity Input Voltage,
D/C

Reverse Polarity Input Voltage,
Transient

6V ≤VIN ≤ 15V

15V ≤VIN ≤ 25V

5mA ≤I

5mA ≤10 ≤ 200 mA

5mA ≤10 ≤ 350 mA

5mA ≤10 ≤ 500 mA

I

O

I

O

I

O

I

O

I

O

I

O

I

O

I

O

10Hz-100kHz, C

ESR=0.1 to 10Ω

25 28 25 28 V

RL = 500Ω, VO ≤ 5.5V

T = 1ms, τ ≤100ms

RL = 500Ω, T = 1ms, τ ≤100ms

≤ 100 mA

O

= 100 mA

= 200 mA

= 350 mA

= 500 mA

≤ 10 mA,

= 100 mA

≤ 200 mA

= 350 mA

= 100µF

OUT

5

50 50

10 10

35 40 35 40 V

-35 -40 -35 -40 V

-35 -40 -35 -40 V

3

5

10

15

20

150

300

400

550

0.18

2

5

12

10

10

10

15

20

30

200

400

450

700

0.25

2.5

8

5

5

5

15

20

20

0.2

250

400

450

550

2

5

12

10

15

15

20

25

30

300

500

550

700

0.3

3

8

mV

mV

mV

mV

mV

mV

mV

mV

mV

mV

mA

mA

mA

mA

µV rms

µF

updated April 24, 2009

http://www.BDTIC.com/AMS

AMS3107

ELECTRICAL CHARACTERISTICS

Electrical Characteristics at V

PARAMETER

Adjustable Version

Reference Voltage

Output Voltage Range 2 24 V

Line Regulation

Load Regulation

Dropout Voltage

Quiescent Current

Output Noise Voltage 10Hz-100kHz 100

Output Bypass Capacitor

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

Ripple Rejection fO = 120Hz 0.02 dB

Maximum Operational 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:

Where the value of the junction-to-ambient thermal resistance are as follows: 195°C/W for TO-92 (N), 160°C/W for the SO-8 (S), 110°C/W for SOT-89 (L),
90°C/W for SOT-223 and 80°C/W for TO-252.

P(MAX)θ=

=6V, V

IN

1.210 1.235 1.26 V

IO ≤ 100 mA, -40°C ≤T

R1=27k, Measured from V

6V ≤VIN ≤ 25V

5mA ≤I

5mA ≤10 ≤ 200 mA

5mA ≤10 ≤ 350 mA

5mA ≤10 ≤ 500 mA

I

= 100 mA

O

I

= 200 mA

O

I

= 350 mA

O

I

= 500 mA

O

I

= 0 mA,

O

I

= 100 mA

O

I

= 200 mA

O

I

= 350 mA

O

ESR=0.1 to 10Ω

IO = 10mA, Reference Voltage ≤ 1.5V

T = 1ms, τ ≤100ms

RL = 500Ω, VO ≥ -0.3V

RL = 500Ω, T = 1ms, τ ≤100ms

VO = 3V

OFF

=3V IO =5mA, TJ=25°C, R1 =27k, C2 = 2µF unless otherwise specified.

OUT

CONDITIONS

(Note 2)

≤ 125°C,

J

to Adj. Pin

OUT

≤ 100 mA

O

= 2.4V 35 60

AJ

T-(MAX)T

A-J

Min.

1.20 1.235 1.270

.02 1.5 mV/V

0.3

0.18

10

21 22 V

35 40 V

-35 -40 V

-35 -40 V

2.5

AMS3107

Typ.

0.5

1.0

1.0

50

300

500

500

2.0

5.0

12

1.8

2.0

Max.

0.5

1

1.5

2.0

200

400

600

700

0.3

2.5

8.0

1.5

Units

V

%

%

%

%

mV

mV

mV

mV

mA

mA

mA

mA

µV

rms

µF

V

V

µA

/V

J-A

updated April 24, 2009