Diodes AP7361 User Manual

A

P7361

1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE

Description

The AP7361 is a 1A, adjustable and fixed output voltage, ultra-low

dropout linear regulator with enable. The device includes pass

element, error amplifier, band-gap reference, current limit and thermal

shutdown circuitry. The device is turned on when EN pin is set to logic

high level.

The characteristics of the low dropout voltage and low quiescent

current make it suitable for low to medium power applications, for

example, laptop computers, audio and video applications, and battery

powered devices. The typical quiescent current is approximately

70µA. Built-in current-limit and thermal-shutdown functions prevent

IC from damage in fault conditions.

The AP7361 is available in U-DFN3030-8, SOT89-5, SOT223, TO252

and SO-8EP package.

Features

 Wide input voltage range: 2.2V - 6V  150mV Very Low Dropout at 300mA Load  500mV Very Low Dropout at 1A Load  Low Quiescent Current (I  Adjustable Output Voltage Range: 1V to 5.0V  Fixed Output Options: 1V to 3.3V  Very Fast Transient Response  High PSRR  Accurate Voltage Regulation  Current Limiting and Short Circuit Protection  Thermal Shutdown Protection  Stable with Ceramic Output Capacitor  2.2µF  Ambient Temperature Range -40°C to +85°C  U-DFN3030-8, SOT89-5, SOT223/SOT223R, TO252/TO252R

and SO-8EP

 Available in “Green” Molding Compound (No Br, Sb)  Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3)



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/quality/lead_free.html 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.

AP7361

Document number: DS33626 Rev. 9 - 2

): 70µA Typical

Q

Pin Assignments

ADJ/NC

Applications

 Servers and Laptops  FPGA and DSP Core or I/O Power  TV, and Home Electrical Appliances  Battery-Powered Devices

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ADJ/NC

( Top View )

2

SOT223/SOT223R

(Top View)

EN

1

2

GND

SOT89-5

OUT

NC

GND

3

2

1

(Top View)

IN

1

2

GND

3

4

8

NC

7

NC

6

EN

5

U-DFN3030-8

( Top View )

3

2

1

TO252/TO252R

OUT

5

GND

IN

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Typical Applications Circuit

V

IN

OUT

P7361

V

OUT

IN

OUT

V

OUT

1uF

Enable

U-DFN3030-8, SOT89-5 and SO-8EP

V

IN

1uF

Pin Descriptions

AP7361

EN

GND

Fixed Version

IN

Fixed Version

TO252, SOT223

OUT

AP7361

GND

AP7361

4.7uF

V

OUT

4.7uF

1uF

Enable

EN

GND

Adjustable Output

U-DFN3030-8 and SOT89-5

ADJ

R1

4.7uF

R2

Name

U-DFN3030-8 SOT89-5 TO252 TO252R SOT223 SOT223R SO-8EP

IN 8 4 1 3 1 3 8

Pin Number

The input of the regulator. Bypass to ground through at least 1µF ceramic capacitor.

The output of the regulator. Bypass to ground through

OUT 1 5 3 2 3 2 1

at least 2.2µF ceramic capacitor. For improved ac load response a larger capacitor is recommended.

GND 4 2 2 1 2 1 4 Ground.

Adjustable voltage version only – a resistor divider from

ADJ 3 3 NA NA NA NA NA

this pin to the OUT pin and ground sets the output voltage.

EN 5 1 NA NA NA NA 2 Enable input, active high.

NC 2, 6, 7 NA NA NA NA NA 3, 5, 6, 7 No connection.

Function

AP7361

Document number: DS33626 Rev. 9 - 2

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Functional Block Diagram

P7361

IN

EN

Gate

Driver

Current Limit and Thermal

Shutdown

0.8V

Fixed Version U-DFN3030-8, SOT89-5 and SO-8EP

IN

Gate

Driver

Current Limit and Thermal

Shutdown

OUT

R

IN

EN

Gate

Driver

Current Limit and Thermal

Shutdown

OUT

ADJ

0.8V

R

GND

Adjustable Version U-DFN3030-8 and SOT89-5

GND

OUT

R

0.8V

R

GND

Fixed Version

TO252, SOT223

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P7361

Absolute Maximum Ratings (@T

Symbol Parameter Ratings Unit

ESD HBM Human Body Model ESD Protection > 2 KV

ESD MM Machine Model ESD Protection (Note 5) > 200 V

VIN

OUT, ADJ, EN Voltage

TJ

TST

PD

Notes: 4. Ratings apply to ambient temperature at +25°C.

5. ESD MM rating at 150V for EN pin in SOT89-5L package.

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.

Input Voltage 6.5 V

Operating Junction Temperature Range -40 to +150 °C

Storage Temperature Range -65 to +150 °C

Power Dissipation (Note 4)

Recommended Operating Conditions (@T

Symbol Parameter Min Max Unit

V

IN

I

OUT

T

A

Note: 6. The device maintains a stable, regulated output voltage without a load current. When the output current is large, attention should be given to the limitation of the package power dissipation.

Input Voltage 2.2 6.0 V

Output Current (Note 6) 0 1.0 A

Operating Ambient Temperature -40 +85

= +25°C, unless otherwise specified.)

A

U-DFN3030-8 1700

TO252 1250

SOT223 1100

SOT89-5 800

SO-8EP 1190

= +25°C, unless otherwise specified.)

A

V

+0.3

IN

Internally limited by maximum junction

temperature of +150°C

V

mW

C

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P7361

Electrical Characteristics (@T

= +25°C, V

A

= V

OUT

+1V, C

IN

= 1F, C

IN

= 4.7F, V

OUT

= VIN unless otherwise specified.)

EN

Symbol Parameter Test Conditions Min Typ Max Unit

V

V

T

VOUT

OUT

VOUT

A

V

REF

I

ADJ

I

Q

I

SHDN

V

OUT

VVIN



OUT

/ V

OUT

DROPOUT

V

IL

V

IH

I

EN

I

LIMIT

I

SHORT

PSRR

tST

VOUT



T

SHDN

T

HYS

FB Reference Voltage

I

= 10mA, TA = +25°C

OUT

ADJ Pin Leakage 0.1 0.5 µA

Input Quiescent Current

Input Shutdown Current

Output Voltage Accuracy

Line Regulation

Load Regulation

Dropout Voltage (Note 7)

Enabled, I

V

= 0V, I

EN

I

= 100mA, TA = +25°C

OUT

I

= 100mA, -40°C  TA  +85°C

OUT

Over VIN, I

V

= V

IN

6V, I

OUT

from 1mA to 300mA

I

OUT

I

from 1mA to 1A

OUT

I

= 300mA

OUT

I

= 500mA

OUT

I

= 1A

OUT

+1V to

OUT

= 100mA

= 0A

, and TA

T

A

-40°C TA  +85°C

= +25°C

EN Input Logic Low Voltage 0 0.3 V

EN Input Logic High Voltage 1.0

EN Input Leakage

Current Limit

Short-Circuit Current

Power Supply Rejection Ratio (Note 8)

Start-Up Time

Output Voltage Temperature Coefficient

V

= 6V, V

IN

V

= V

IN

VIN = V

f = 1KHz, I

f = 10KHz, I

V

OUT

I

= 100mA, -40°C  TA  +85°C

OUT

= 0V or 6V

EN

+1V

OUT

+1V, Output Voltage < 15% V

OUT

= 100mA

OUT

= 100mA

OUT

= 3V, C

= 1µF, RL = 30

OUT

Thermal Shutdown Threshold 150 °C

Thermal Shutdown Hysteresis 20 °C

0.8 V

70 90 µA

-1 0.05 1 µA

-1 1

-2 2

%

-3 ±0.5 3

0.01 0.1

0.2

%/V

-1.0 0.5 1.0 %

150 200

250 350

mV

500 700

V

IN

-0.1 0.01 0.1 µA

1.1 1.5 A

200 mA

60 65

45

dB

200 µs

±130 ppm/°C

U-DFN3030-8 (Note 9) 70

TO252 (Note 9) 95

JA

Thermal Resistance Junction-to-Ambient

SOT223 (Note 9) 110

°C/W

SOT89-5 (Note 9) 150

SO-8EP (Note 9) 100

Notes: 7. Dropout voltage is the voltage difference between the input and the output at which the output voltage drops 2% below its nominal value. This parameter only applies to output voltages above 1.5V since minimum V

8. For V

9. Test condition : DFN3030E-8, SO-8EP device mounted on 2"x2", FR-4 substrate PCB, with minimum recommended pad on top layer and thermal vias to bottom layer ground plane. TO252 device mounted on 2"x2" FR-4 substrate PC board, 2oz copper, with minimum recommended pad layout. SOT223 the device is mounted on FR-4 substrate PC board, with minimum recommended pad layout. SOT89-5L device mounted on 1"x1" FR-4 substrate PC board, with minimum recommended pad layout

 2.5V and VIN = V

IN

+1V. For VIN < 2.5V, the PSRR performance may be reduced.

OUT

= 2.2V.

IN

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Typical Performance Characteristics

Start-up Time

V

= 0 to 2V (1V/div)

EN

V

= 4.0V

IN

= 3.0V (1V/div)

V

OUT

Start-up Time

V

EN

V

= 4.0V

IN

V

OUT

P7361

= 0 to 2V (1V/div)

= 3.0V (1V/div)

Time (100s/div)

Line Transient Response

V

= 4.3V to 5.3V (1V/div)

IN

Tr = Tf = 5s

=

= 3.3V (20mV/div)

V

Time (40s/div)

Line Transient Response

V

= 5.5V to 6V (1V/div)

IN

Tr = Tf = 5s

=

V

= 5.0V (20mV/div)

Time (40s/div)

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Typical Performance Characteristics (cont.)

Load Transient Response

P7361

Load Transient Response

V

IN

C

IN

V

IN

C

= V

EN

= 1F,C

= V

EN

= 1F,C

= 2.2V

= 4.7F

OUT

V

= 1.2V (20mV/div) V

OUT

= 50mA to 100mA (50mA/div)

I

OUT

Time (200s/div)

Load Transient Response

= 4.3V

= 4.7F

= 3.3V (20mV/div)

V

OUT

V

= V

= 2.2V

IN

EN

C

= 1F,C

IN

= 4.7F

OUT

= 1.2V (20mV/div)

OUT

I

= 100mA to 500mA (200mA/div)

OUT

Time (200s/div)

Load Transient Response

V

= V

= 4.3V

IN

EN

C

=1F,C

=4.7F

V

= 3.3V (20mV/div)

OUT

= 50mA to 100mA (50mA/div)

I

OUT

Time (200s/div)

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= 100mA to 500mA (200mA/div)

I

OUT

Time (200s/div)

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