Diodes AP7362 User Manual

A

Description

The AP7362 is a 1.5A adjustable output voltage linear regulator with

ultra-low dropout. The device includes pass element, error amplifier,

band-gap, current limit and thermal shutdown circuitry. The integrated

Enable block allows the part to be turned on and off via a logic signal.

A logic high level on EN turns the device on and a logic low turns the

part off.

The low dropout voltage characteristics and fast transient response to

step changes in load make it suitable for low voltage microprocessor

applications. The typical quiescent current is approximately 0.5mA

and changes little with load current. The built-in current-limit and

thermal-shutdown functions prevent damage to the IC in fault

conditions.

This device is available in U-DFN2030-8 and SO-8EP packages.

Features

 1.5A Ultra-Low Dropout Linear Regulator with EN  Ultra-Low Dropout: 190mV at 1.5A  Stable with 10µF Input/Output Capacitor, any type  Wide Input Voltage Range: 2.2V to 5.5V  Adjustable Output Voltage: 0.6V to 5.0V  Fixed Output Options: 1V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V  Low Ground Pin Current  25nA Quiescent Current in Shutdown Mode  V  V  Excellent Load/Line Transient Response  Current Limit and Thermal Shutdown Protection  Ambient Temperature Range: -40°C to +85°C  U-DFN2030-8, SO-8EP: Available in Lead free “Green” Molding

Accuracy of ±1.5% @ +25°C

ADJ

Accuracy of ±3% Over Line, Load and Temperature

ADJ

Compound (No Br, Sb)

 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

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

P7362

1.5A, LOW QUIESCENT CURREENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR

Pin Assignments

GND

EN

IN

ADJ/

NC

U-DFN2030-8

1

2

3

4

(Top View)

6785

3214

IN INENGND

(Top View)

SO-8EP

OUTOUTOUT

8

ADJ/NC

OUT

7

OUT

6

OUT

5

Typical Application Circuit

V

IN

10µF

Enable

IN

EN

OUT

AP7362

GND

Fixed Output

V

OUT

10µF

V

IN

OUT

V

OUT

EN

AP7362

GND

R1

10µF

ADJ

R2

Applications

 ASIC Power Supplies in Printers, Graphics Cards, DVD Players,

STBs, Routers, etc

 FPGA and DSP Core or I/O Power Supplies

10µF

Enable

 SMPS Regulator  Conversion from 3.3V or 5V Rail

V 

OUT

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.

Adjustable Output



R



1

V



REF



R





1

 

2



Rwhere

Ωk10

2

AP7362

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Pin Descriptions

Pin Name Pin Number Function

GND 1 Ground.

EN 2 Enable input, active high.

IN 3, 4 Voltage input pin.

OUT 5, 6, 7 Voltage output pin.

ADJ 8

NC 8 No connection for fixed output version.

EP EP

Output feedback pin for adjustable version only – a resistor divider from this pin to the OUT pin and ground sets the output voltage.

The exposed pad (EP) is used to remove heat from the package and it is recommended that it is connected to a copper area. The die is electrically connected to the exposed pad. It is recommended to connect it externally to GND, but should not be the only ground connection.

Functional Block Diagram

P7362

IN

EN

Gate

Dri ver

Current Limit and Thermal

Shutdown

0.605V

OUT

R

IN

EN

Gate

Dri ver

Current Limit

and Thermal

Shutdown

0.605V

GND

Fixed Version

Absolute Maximum Ratings (Note 4) (@T

Symbol Parameter Ratings Unit

ESD HBM Human Body Model ESD Protection 2000 V

ESD MM Machine Model ESD Protection 200 V

VIN Input Voltage -0.3 to +6.0 V

V

, VEN OUT, EN Voltage -0.3V to VIN +0.3 V

OUT

I

Continuous Load Current Internal Limited

OUT

TST Storage Temperature Range -65 to +150 °C

TJ Maximum Junction Temperature 150 °C

Note: 4. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress

AP7362

Document number: DS35058 Rev. 6 - 2

Ratings only, and functional operation of the device at these or any other conditions beyond those indicated is not implied. Exposure to absolute-maximum rated conditions for extended periods may affect device reliability.

= +25°C, unless otherwise specified.)

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Adjustable Version

OUT

ADJ

GND

August 2013

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P7362

Recommended Operating Conditions (@T

= +25°C, unless otherwise specified.)

A

Symbol Parameter Min Max Unit

V

IN

I

OUT

T

A

TJ

Note: 5. Operating junction temperature must be evaluated and derated as needed, based on ambient temperature (TA), power dissipation (PD), maximum allowable operating junction temperature (T

Input voltage 2.2 5.5 V

Output Current 0 1.5 A

Operating Ambient Temperature -40 +85

Operating Junction Temperature (Note 5) -40 +125

), and package thermal resistance (θJA).

J-MAX

C C

Electrical Characteristics

(@TA = +25°C, V

= 3.3V, V

IN

OUT

=1.8V, I

= 10mA, VEN = VIN, C

OUT

= 10μF, C

IN

OUT

= 10μF, V

= 2V, unless otherwise stated.)

EN

Minimum and maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at T

= +25°C, and are provided for reference purposes only.

A

Symbol Parameter Test Conditions Min Typ Max Unit

T

V

= V

V

ADJ

V

ADJ

I

ADJ

V

DROPOUT

V

OUT

V

OUT

I

GND

I

SHDN

I

OUT-PK

ISC

VIH

VIL

I

IH

I

IL

t

d(OFF)

t

d(ON)

Notes: 6. Dropout voltage is the minimum voltage difference between the input and the output at which the output voltage drops 2% below its nominal value. For any output voltage less than 2.5V, the minimum V

7. The line and load regulation specification contains only the typical number. However, the limits for line and load regulation are included in the adjust voltage tolerance specification.

ADJ Pin Voltage

ADJ Pin Voltage (A Grade)

ADJ Pin Bias Current

Dropout Voltage (Note 6)

Line Regulation (Note 7)

/VIN

Load Regulation (Note 7)

/I

OUT

Ground Pin Current in Normal Operation Mode

Ground Pin Current

Peak Output Current

Short Circuit Current OUT grounded

Enable Logic High

Enable Logic Low

Enable Pin High Current

Enable Pin Low Current

Turn-Off Delay

Turn-On Delay

IN

I

OUT

V

= V

IN

I

OUT

VIN = V

I

OUT

VIN = V

I

OUT

I

OUT

V

EN

V

OUT

VIN = V

V

= VIN

EN

V

= 0V

EN

From V I

OUT

From V I

OUT

operating voltage is the limiting factor.

IN

to V

IN-MIN

IN-MAX

= 10mA to 1.5A

to V

IN-MIN

IN-MAX

= 10mA to 1.5A

to V

IN-MIN

= 1.5A, V

IN-MIN

OUT

to V

IN-MAX

= 10mA to 1.5A

< VIL

 V

IN-MIN

EN

OUT-NOM

to V

< VIL to V

-5%

IN-MAX

= 1.5A

> VIH to V

EN

= 1.5A

,

= 2.5V

= OFF,

OUT

= ON,

= +25°C

A

Over temp 0.575 0.635

T

= +25°C

A

Over temp 0.587 0.623

T

= +25°C

A

Over temp 750

T

= +25°C

A

Over temp 280

T

= +25°C

A

Over temp 0.05

T

= +25°C

A

Over temp 0.33

T

= +25°C

A

Over temp 1.3

T

= +25°C

A

Over temp 15

= +25°C

T

A

Over temp 2

Over temp 1.4

Over temp 0.65

0.584 0.605 0.626

0.596 0.605 0.614

50

190 240

- 0.04 -

- 0.18 -

1 1.2

0.025 0.125

3.6

3.7

1

0.1

25 μs

V

nA

mV

%/V

%/A

mA

μA

A

V

nA

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P7362

Electrical Characteristics (cont.)

(@TA = +25°C, V

= 3.3V, V

IN

OUT

=1.8V, I

= 10mA, VEN = VIN, C

OUT

= 10μF, C

IN

OUT

= 10μF, V

= 2V, unless otherwise stated.)

EN

Minimum and maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at T

= +25°C, and are provided for reference purposes only.

A

Symbol

PSRR Ripple Rejection



n(l/f)

en

T

SHDN

T

HYS

θJA

θJC

Note: 8. Device mounted on 2” x 2” FR-4 substrate PCB, 2oz copper with minimum recommended pad layout.

Output Noise Density

Output Noise Voltage

Thermal shutdown threshold

Thermal shutdown hysteresis

Thermal Resistance Junction-to-Ambient

Thermal Resistance Junction-to-Case

Parameter Test Conditions Min Typ Max Unit

= 3.0V, I

V

IN

VIN = 3.0V, I

f = 120Hz, C

= 1.5A, f = 120Hz

OUT

= 1.5A, f = 1kHz

OUT

= 10μF ceramic

OUT

BW = 100Hz – 100kHz, C

= 10μF ceramic

OUT

T

rising

J

T

falling from T

J

SHDN

U-DFN2030-8 (Note 8) 85.0

SO-8EP (Note 8) 52.8

U-DFN2030-8 (Note 8) 17.0

SO-8EP (Note 8) 10.0

65

61

1.0

dB

μV/Hz

90 μV(rms)

170

10

C

°C/W

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k

Typical Performance Characteristics

(@TA = +25°C, V

10k

= 2.7V, V

IN

C = 10µF CER

OUT

EN

= VIN, C

= 10μF, C

IN

OUT

= 10μF, I

= 10mA, V

OUT

= 1.8V, unless otherwise stated.)

OUT

10

P7362

1k



100

NOISE (nV/ Hz)

10

100 1000 10k 100k

FREQUENCY (Hz)

Noise Density

3

2.5

2

1.5

GND

I (mA)

1

1k



100

NOISE (nV/ Hz)

10

100 1000 10k 100k

FREQUENCY (Hz)

Noise Density

1k

V = 0.65V

EN

100

GND

I (nA)

10

0.5

0

0.5 1 1.5

I (A)

LOAD

I vs. Load Current

GND

0

-50 -25 75 12502550 100

TEMPERATURE (°C)

I vs. Temperature

GND(OF F)

AP7362

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