Diodes AP1115 User Manual

A

Description

AP1115 is a low dropout positive adjustable or fixed mode regulator
with 0.6A output current capability. The product is specifically designed
to provide well-regulated supply for low voltage IC applications such as
high-speed bus termination and low current 3.3V logic supply. AP1115
is also well suited for other applications such as VGA cards. AP1115 is
guaranteed to have <1.3V dropout at full load current making it ideal to
provide well regulated outputs of 1.25V to 5V with up to 18V input
supply.

P1115

0.6A LOW DROPOUT POSITIVE ADJUSTABLE
OR FIXED-MODE REGULATOR

Pin Assignments

AP1115A

Features

• 1.3V Maximum Dropout at Full Load Current

• Fast Transient Response

• Output Current Limiting

• Built-In Thermal Shutdown

• Good Noise Rejection

• 3-Terminal Adjustable or Fixed 1.5V / 1.8V / 2.5V / 2.8V/ 3.0V /

3.3V / 3.5V / 5.0V

• Lead Free Package: SOT89-3L
 Totally Lead-Free; RoHS Compliant (Notes 1 & 2)

• SOT89-3L: Available in “Green” Molding Compound
(No Br, Sb)

 Halogen and Antimony Free. “Green” Device (Note 3)

Applications

• PC Peripheral

• Communication

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen and Antimony free, "Green" and Lead-Free.

3. Halogen and Antimony free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

AP1115B

AP1115

Document number: DS31025 Rev. 11 - 2

1 of 8

www.diodes.com

August 2012

© Diodes Incorporated

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Typical Applications Circuit

5V

C1

100uF

5V

C1
100uF

P1115

VIN

GND

VOUT

C2

100uF

AP1115A (5V/3.3V Fixed Output)

5V

C1

100uF

VOUT

C2

VIN

GND

100uF

AP1115B (5V/3.3V Fixed Output)

3.3V/0.5A

3.3V/0.5A

VIN

Adj

VOUT

R1

121R2121

Ω

Ω

C2
100uF

AP1115A (5V/2.5V Adj Output)

5V

VOUT

VIN

Adj

C1
100uF

R1

121

R2

121

Ω

Ω

C2
100uF

AP1115B (5V/2.5V Adj Output)

V

O

2.5V/0.5A

V

O

2.5V/0.5A

Note:

=

x

VV

(1

REFo

Pin Descriptions

Pin Name I/O Function

Adj (GND) I

V

O

OUT

VIN I

A resistor divider from this pin to the V

Mode).

The output of the regulator. A minimum of 10uF capacitor (0.15Ω ≤ ESR ≤ 20Ω) must be connected from this

pin to ground to insure stability.

The input pin of regulator. Typically a large storage capacitor (0.15Ω ≤ ESR ≤ 20Ω) is connected from this pin

to ground to insure that the input voltage does not sag below the minimum dropout voltage during the load
transient response. This pin must always be 1.3V higher than V

AP1115

Document number: DS31025 Rev. 11 - 2

www.diodes.com

pin and ground sets the output voltage (Ground only for Fixed-

OUT

2 of 8

R

2

+

)

R

1

in order for the device to regulate properly.

OUT

August 2012

© Diodes Incorporated

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P1115

Absolute Maximum Ratings (@T

= +25°C, unless otherwise specified.)

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Symbol Parameter Rating Unit

VIN DC Supply Voltage -0.3 to +18 V
PD Power Dissipation Internally Limited mW
TST Storage Temperature -65 to +150 °C

TMJ Maximum Junction Temperature +150 °C

Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only; functional
operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be affected by exposure to
absolute maximum rating conditions for extended periods of time.

Recommended Operating Conditions

Symbol Parameter Min Max Unit

TOP Operating Junction Temperature Range 0 +125 °C

Electrical Characteristics (@T

Parameter Conditions Min Typ Max Unit

Reference Voltage AP1115-ADJ

AP1115-1.5
AP1115-1.8
AP1115-2.5

Output Voltage

Line Regulation AP1115-XXX

Load Regulation

Notes: 4. See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant
junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead = 1/18” from the package.

5. Line and load regulation are guaranteed up to the maximum power dissipation of 5W. Power dissipation is determined by the input/output differential

and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range.

AP1115-2.8
AP1115-3.0
AP1115-3.3
AP1115-3.5
AP1115-5.0

AP1115-ADJ

AP1115-1.5

AP1115-1.8

AP1115-2.5

AP1115-2.8

AP1115-3.0

AP1115-3.3

AP1115-3.5

AP1115-5.0

= +25°C, unless otherwise specified.)

A

T

= +25°C, (V

A

I

= 10mA, TA = +25°C, 3V ≤ V

OUT

= 10mA, TA = +25°C, 3.3V ≤ V

I

OUT

= 10mA, TA = +25°C, 4V ≤ V

I

OUT

I

= 10mA, TA = +25°C, 4.3V ≤ V

OUT

= 10mA, TA = +25°C, 4.5V ≤ V

I

OUT

= 10mA, TA = +25°C, 4.8V≤ V

I

OUT

I

= 10mA, TA = +25°C, 5V ≤ VIN ≤ 12V

OUT

= 10mA, TA = +25°C, 6.5V ≤ VIN ≤ 12V

I

OUT

I

= 10mA, V

O

= 3.3V, V

V

IN

T

= +25°C (Notes 4 & 5)

A

= 3V, 0mA < Io < 0.6A,TA = +25°C

V

IN

) = 1.5V, IO = 10mA

IN - OUT

+ 1.5V < V

OUT

= 0,0mA < Io < 0.6A,

ADJ

< 15V, TA = +25°C

IN

≤ 12V

IN

IN

≤ 12V

IN

IN

IN

IN

≤ 12V

≤ 12V
≤ 12V

≤ 12V

(Notes 4 & 5)

= 3.3V, 0mA < Io < 0.6A, TA = +25°C

V

IN

(Notes 4 & 5)

= 4V, 0mA < Io < 0.6A, TA = +25°C

V

IN

(Notes 4 & 5)

= 4.3V, 0mA < Io < 0.6A, TA = +25°C

V

IN

(Notes 4 & 5)

= 5V, 0 ≤ I

V

IN

≤ 0.6A, TA = +25°C

OUT

(Notes 4 & 5)

= 5V, 0 ≤ I

V

IN

≤ 0.6A, TA = +25°C

OUT

(Notes 4 & 5)
V

= 5V, 0 ≤ IOUT ≤ 0.6A, TA = +25°C

IN

(Notes 4 & 5)

= 8V, 0 ≤ IOUT ≤ 0.6A, TA = +25°C

V

IN

(Notes 4 & 5)

1.225 1.250 1.275 V

1.470 1.500 1.530 V

1.764 1.800 1.836 V

2.450 2.500 2.550 V

2.744 2.800 2.856 V

2.940 3.000 3.060 V

3.235 3.300 3.365 V

3.430 3.500 3.570 V

4.900 5.000 5.100 V
— — 0.2 %

— — 1 %

— 12 15 mV

— 15 18 mV

— 20 25 mV

— 22 28 mV

— 23 30 mV

— 26 33 mV

— 28 35 mV

— 40 50 mV

AP1115

Document number: DS31025 Rev. 11 - 2

3 of 8

www.diodes.com

August 2012

© Diodes Incorporated