Diodes AP2318 User Manual

Data Sheet

600mA LOW DROPOUT LINEAR REGULATOR AP1117M

600mA ULDO REGULATOR WITH ENABLE AP2318

General Description

The AP2318 is a series of ultra low dropout regulators optimized for low voltage applications where transient response and minimum input voltage are critical.

The AP2318 provides current limit and thermal shutdown. Its circuit includes a trimmed bandgap reference to assure output voltage accuracy to be within ±1.5%. On-chip thermal shutdown provides protection against any combination of overload and ambient temperatures that would create excessive junction temperatures.

The AP2318 has both fixed and adjustable versions. The 1.3V fixed versions integrate the corresponding resistor divider. The adjustable version can set the output voltage through two external resistors.

The AP2318 is available in the standard DFN-3×3-8 and SOIC-8 packages.

Features

· Wide Operating Voltage Ranges: 2.5V to 12V

· Output Voltage Accuracy: ±1.5%

· On-chip Thermal Shutdown

· ESD: Human Body Model 3kV

Machine Model 600V

· Operating Junction Temperature: -40oC to 125oC

Applications

· Notebook

· USB Device

· Add-on Card

· DVD Player

· PC Motherboard

DFN-3×3-8

Figure 1. Package Types of AP2318

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SOIC-8

Data Sheet

600mA LOW DROPOUT LINEAR REGULATOR AP1117M

600mA ULDO REGULATOR WITH ENABLE AP2318

Pin Configuration

DN Package (DFN-3x3-8)

V

1

IN

V

2

IN

V

OUT

3

V

45

OUT

Figure 2. Pin Configuration of AP2318 (Top View)

Functional Block Diagram

1, 2 (3, 4)

V

IN

8

7

6

EN

NC

GND

ADJ/NC

NC

EN

V

M Package

(SOIC-8)

8

7

6

5

GND

ADJ/NC

V

OUT

NC

V

OUT

1

2

3

IN

4

IN

3, 4 (6)

8 (2)

EN

Enable

Bandgap

Reference

V

RC

Compensation

Error

FB

Amplifier

OVP

Thermal

Shutdown

Current

Limit

A2

A1

5 (7)

6 (8)

ADJ/NC

B

GND

Connect A1 and A2, disconnect B: Fixed Voltage Version Connect B, disconnect A1 and A2:Adjustable Voltage Version

A (B) A: DFN-3x3-8

B: SOIC-8

Figure 3. Functional Block Diagram of AP2318

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Data Sheet

600mA LOW DROPOUT LINEAR REGULATOR AP1117M

600mA ULDO REGULATOR WITH ENABLE AP2318

Pin Description

Pin Number

×3-8

DFN-3

1, 2 3, 4

3, 4 6

SOIC-8

Pin Name Function

V

OUT

IN

Input Voltage

Output Voltage

5 7 ADJ/NC Adjust Voltage/No Connection

6 8 GND Ground

7 1, 5 NC No connection

8 2 EN On/Off control

Ordering Information

AP2318 -

Circuit Type

Package

M: SOIC-8

DN: DFN-3×3-8

E1: Lead Free

G1: Green

TR: Tape and Reel

Blank: Tube

ADJ: Adjustable Output

1.3: Fixed Output 1.3V

Package

SOIC-8

DFN-3

×3-8

Te mp er at ur e

Range

-40 to

125oC

-40 to

125oC

Part Number Marking ID

Lead Free Green Lead Free Green

AP2318M-ADJE1 AP2318M-ADJG1 2318M-ADJE1 2318M-ADJG1 Tube

AP2318M-ADJTRE1 AP2318M-ADJTRG1 2318M-ADJE1 2318M-ADJG1 Tape & Reel

AP2318M-1.3E1 AP2318M-1.3G1 2318M-1.3E1 2318M-1.3G1 Tube

AP2318M-1.3TRE1 AP2318M-1.3TRG1 2318M-1.3E1 2318M-1.3G1 Tape & Reel

AP2318DN-ADJTRE1 AP2318DN-ADJTRG1 F9E B9E

AP2318DN-1.3TRE1 AP2318DN-1.3TRG1 F9B B9B

Packing

Typ e

Tap e & Reel

BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with "G1" suffix are available in green packages.

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Data Sheet

600mA LOW DROPOUT LINEAR REGULATOR AP1117M

600mA ULDO REGULATOR WITH ENABLE AP2318

Absolute Maximum Ratings (Note 1)

Parameter Symbol Value Unit

Input Voltage V

Operating Junction Temperature T

Storage Temperature Range T

Lead Temperature (Soldering, 10sec) T

LEAD

Thermal Resistance (Note 2) θ

IN

J

STG

SOIC-8 135

JA

15 V

150

-65 to 150

260

o

C/W

o

C

o

C

o

C

DFN-3×3-8 120

ESD (Human Body Model) ESD 3000 V

ESD (Machine Model) ESD 600 V

Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Note 2: Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, T

perature, T

)/θ

T

A

The maximum allowable power dissipation at any ambient temperature is calculated using: PD(max)=(TJ(max) -

A.

Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will

JA.

(max), the junction-to-ambient thermal resistance,θ

J

and the ambient tem-

JA,

go into thermal shutdown.

Recommended Operating Conditions

Parameter Symbol Min Max Unit

Input Voltage

Enable Voltage

Operating Junction Temperature Range T

V

IN

EN

J

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2.5 12 V

12 V

-40 125

o

C

Data Sheet

600mA LOW DROPOUT LINEAR REGULATOR AP1117M

600mA ULDO REGULATOR WITH ENABLE AP2318

Electrical Characteristics

Operating Conditions: 2.5V≤V

≤12V, CIN=1µF, C

IN

=2.2µF, TJ=25oC, unless otherwise specified. (P≤Maxi-

OUT

mum Power Dissipation). Limits appearing in Boldface type apply over the entire junction temperature range for

operation of -40

Parameter

Reference Voltage

Output Voltage

Maximum Output Current

Line Regulation

Load Regulation

Dropout Voltage

Adjust Pin Current

Minimum Load Current

Quiescent Current

RMS Output Noise (% of V

OUT

Thermal Shutdown Temperature

Thermal Shutdown Hysteresis

Enable Input Voltage

Enable Input Current

Thermal Resistance, (Junction to Case)

o

)

C to 125oC.

Symbol

V

I

OUT

V

RLINE

V

RLOAD

V

DROP

I

ADJ

I

LOAD

I

V

I

θ

REF

OUT

AP2318-ADJ I

10mA≤I

I

OUT

10mA≤I

(max) VIN-V

AP2318-ADJ I

OUT

I

OUT

AP2318-ADJ V

IN=VOUT

V

IN

∆V

OUT

(min) V

Q

NOI

OUT

VIN=V

TA=25oC, 10Hz≤f≤20kHz

Enable logic low 0.8

EN

Enable logic high 2.25

VEN=2.25V

EN

V

EN

DFN-3×3-8

JC

SOIC-8 24

Conditions

=10mA, VIN-V

OUT

≤600mA, V

OUT

+2V≤VIN ≤12V

OUT

=10mA, VIN=2.5V, TJ=25oC

≤600mA, 2.5V≤VIN ≤12V

OUT

=2V

OUT

=10mA, V

+2V≤VIN≤12V

OUT

=2V, TJ=25oC

OUT

Min Typ Max Unit

0.788

0.800

0.812

0.784

0.800

0.816

-1.5%

-2%

1.5%

2%

0.85 1.2 A

1 6 mV

=10mA, 2.5V≤VIN ≤12V 1 6 mV

+2V, 10mA≤I

=2.5V, 10mA≤I

(∆V

)=1%, I

REF

≤600mA

OUT

≤600mA 1 10 mV

OUT

=600mA

OUT

1 10 mV

0.35 V

0.05 1

+2V≤VIN≤12V (ADJ only)

OUT

+2V, I

OUT

=0mA

1.7 5 mA

250

0.003 %

150

25

515µA

=0.8V

15

4 µA

o

V

µA

o

C

o

C

V

C/W

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