Diodes AP7363 User Manual

A

Description

The AP7363 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 characteristics of low dropout voltage 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 IC from damage in fault conditions.

This device is available in U-DFN2030-8, SO-8EP, SOT223 and TO252 packages.

Features

• 1.5A ultra-low dropout linear regulator

• Ultra-low dropout: 190mV at 1.5A

• Stable with 10µF input/output capacitor, any types

• 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

• Excellent Load/Line Transient Response

• Current limit and thermal shutdown protection

• Ambient temperature range: -40°C to +85°C

• U-DFN2030-8, SO-8EP, SOT223 and TO252: Available in

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

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

accuracy of ±1.5% @ +25°C

ADJ

accuracy of ±3% over line, load and temperature

ADJ

“Green” Molding Compound (No Br, Sb)

Applications

• ASIC power supplies in printers, graphics cards, DVD players, STBs, routers, etc

• FPGA and DSP core or I/O power supplies

• SMPS regulator

• Conversion from 3.3V or 5V rail

P7363

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

Pin Assignments

(Top View)

GND

1 2

IN

3

IN

4

ADJ/

NC

U-DFN2030-8

(Top View)

SO-8EP

(Top View)

SOT223

(Fixed Output)

(Top View)

OUTOUTOUT

6785

3214

IN INGND

IN

OUT

3

GND (TAB)

2

IN

1

3 2 1

GND

8

ADJ/NC

OUT

7

OUT

6

OUT

5

TO252

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.

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Typical Applications Circuit

V

IN

P7363

V

OUTIN

OUT

V

IN

OUTIN

V

OUT

AP7363

10µF

GND

Fixed Output

10µF

Pin Descriptions

Name

SOT223

TO252

Pin Number

U-DFN2030-8

SO-8EP

GND 2 1 Ground.

IN 1 2, 3, 4 Voltage input pin.

OUT 3 5, 6, 7 Voltage output pin.

ADJ NA 8

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

NC NA 8 No connection for fixed output version.

The exposed pad (EP) is used to remove heat from the package and it is recommended that

EP/TAB — —

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

10µF

AP7363

GND

Adjustable Output

⎛

R

⎜

1VV

+=

REFOUT

⎜

R

⎝

Function

R1

ADJ

R2

10µF

⎞

1

⎟ ⎟

2

⎠

Ωk10Rwhere

≤

2

IN

Gate

Driver

EN

Fixed Version

AP7363

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Current Limit and Thermal

Shutdown

0.605V

OUT

R

GND

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IN

Gate

Driver

EN

Adjustable Version

Current Limit and Thermal

Shutdown

0.605V

OUT

ADJ

GND

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P7363

Absolute Maximum Ratings (cont.) (@T

Symbol Parameter Ratings Unit

ESD HBM Human Body Model ESD Protection 2000 V

ESD MM Machine Model ESD Protection 200 V

Input Voltage -0.3 to +6.0 V OUT Voltage Continuous Load Current Internal Limited Storage Temperature Range -65 to +150 °C Maximum Junction Temperature 150 °C

V

I

VIN

OUT

TST

TJ

Recommended Operating Conditions (@T

Symbol Parameter Min Max Unit

V

IN

I

OUT

T

A

TJ

Notes: 4. Stresses beyond 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 are not implied. Exposure to absolute-maximum rated conditions for extended periods may affect device reliability.

5. Operating junction temperature must be evaluated and derated as needed, based on ambient temperature (T 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

= +25°C, unless otherwise specified.)

A

= +25°C, unless otherwise specified.)

A

), and package thermal resistance (θJA).

J-MAX

-0.3 to VIN +0.3

), power dissipation (PD), maximum

A

V

°C °C

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P7363

Electrical Characteristics (@T

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

V

ΔV

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.

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

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

A

Symbol Parameter Test Conditions Min Typ Max Unit

V

ADJ

I

ADJ

DROPOUT

OUT

I

GND

I

OUT-PK

ISC

t

d(off)

t

d(on)

ADJ Pin Voltage

ADJ Pin Bias Current

Dropout Voltage (Note 6)

Line Regulation (Note 7)

/ΔVIN

Load Regulation (Note 7)

/ΔI

OUT

Ground Pin Current in Normal Operation Mode

Peak Output Current Short Circuit Current OUT grounded Turn-Off Delay

Turn-On Delay

PSRR Ripple Rejection

ρ

T

SHDN

T

θ

n(l/f)

en

HYS

Output Noise Density Output Noise Voltage Thermal Shutdown Threshold

Thermal Shutdown Hysteresis

Thermal Resistance Junction-to-

JA

Ambient

Thermal Resistance Junction-to-Case

JC

= +25°C, V

A

= 3.3V, I

IN

V

= V

IN

IN-MIN

= 10mA to 1.5A

I

OUT

VIN = V

IN-MIN

I

= 1.5A, V

OUT

VIN = V

IN-MIN

I

= 10mA to 1.5A

OUT

I

= 10mA to 1.5A

OUT

≥ V

V

OUT

to V

OUT

to V

OUT - NOM

= 10mA, C

,

IN-MAX

= 2.5V

IN-MAX

-5%

= 10µF, C

IN

T

A

= +25°C

= 10µF, unless otherwise specified.)

OUT

0.584 0.605 0.626 Over temp 0.575 0.635 T

= +25°C

A

50

Over temp 750

= +25°C

T

A

190 240 Over temp 280 T

= +25°C

A

— 0.04 —

Over temp 0.05

= +25°C

T

A

— 0.18 — Over temp 0.33 T

= +25°C

A

1.0 1.2

Over temp 1.3

3.6

T

= +25°C

A

3.7

Over temp 2

From V From V V

IN

VIN = 3.0V, I F = 120Hz, C

EN EN

= 3.0V, I

< VIL to V > VIH to V

OUT

= 1.5A, f = 120Hz

OUT

= 1.5A, f = 1kHz

OUT

= 10μF ceramic

OUT

BW = 100Hz – 100kHz,

= 10μF ceramic

C

OUT

T

rising

J

falling from T

T

J

SHDN

= OFF, I

= ON, I

OUT

= 1.5A

25 μs 25 μs 65 61

1.0 100 μV(rms) 170

10 U-DFN2030-8 (Note 8) 174.0 SO-8EP (Note 8) 52.8 SOT223 (Note 8) 105.7 TO252 (Note 8) 87.8 U-DFN2030-8 (Note 8) 28.2 SO-8EP (Note 8) 10.0 SOT223 (Note 8) 18.5 TO252 (Note8) 17.3

operating voltage is the limiting factor.

IN

V

nA

mV

%/V

%/A

mA

A A

dB

μV/√Hz

°C

o

C/W

o

C/W

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k

)

2

5

D

R

O

P

OUT

OLT

G

Typical Performance Characteristics (@T

10k

C = 10µF CER

OUT

= +25°C, VIN = 2.7V, C

J

10

= 10µF, C

IN

C = 10µF

OUT

= 10µF, I

= 10mA, V

OUT

P7363

= 1.8V.)

1k

√

100

NOISE (nV/ Hz)

10

100 1000 10k 100k

FREQUENCY (Hz)

Noise Density

3

2.5

2

1.5

GND

I (mA)

1

0.5

1k

√

NOISE (nV/ Hz)

100

10

100 1000 10k 100k

FREQUENCY (Hz)

125°C

Noise Density

25°C

-40°C

1

OUT

V (V

ADJ

V (V)

0

0.61

0.610

0.605

0.600

0

0.5 1 1.5 I (A)

LOAD

I vs. Load Current

GND

0

0123

Turn-On Characteristics

V (V)

IN

0.3

125°C

E (V)

0.2

A

25°C

V

-40°C

0.1

0.595

0.590

-50 -25 75 12502550 100 TEMPERATURE (°C)

V vs. Temperature

ADJ

0

00.5 LOAD CURRENT (A)

Dropout Voltage vs. Load Current

11.5

AP7363

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)

Typical Performance Characteristics (cont.)

(@TJ = +25°C, VIN = 2.7V, C

= 10µF, C

IN

OUT

Turn-On Time

V

OUT

I

= 0A, C

L

V

IN

= 10µF, I

= 1.2V (500mV/div)

OUT

= 10mA, V

OUT

= 10μF CER

= 3.0V (2V/div

OUT

= 1.8V.)

Turn-On Time

V

OUT

I

= 1.5A, C

L

V

= 3.0V (2V/div

IN

P7363

= 1.2V (500mV/div)

= 10μF CER

OUT

Time (10μs/div)

V

IN

C

OUT

= 3.3V

=10μF CER

Load Transient Response

90 80 70 60

V

= 1.8V (50mV/div)

OUT

50 40 30

V = 3.3V

IN

REJECTION RATIO (dB)

20

V = 1.8V

OUT

I

= 1A

OUT

C = 1µF CER

10

IN

C = 1µF CER

I

= 100mA to 1.5A (1A/div)

LOAD

OUT

0

100 1k 10k 100k 1M

FREQUENCY (kHz)

PSRR

Time (40μs/div)

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P7363

Application Note

Input Capacitor

A minimum 2.2μF ceramic capacitor is recommended between IN and GND pins to decouple input power supply glitch and noise. The amount of the capacitance may be increased without limit. Larger input capacitor like 10μF will provide better load transient response. This inpu t capacitor must be located as close as possible to the device to assure input stability and reduce noise. For PCB layout, a wide copper trace is required for both IN and GND pins. A lower ESR capacitor type allows the use of less capacitance, while higher ESR type requires more capacitance.

Output Capacitor

The output capacitor is required to stabilize and help the transient response of the LDO. The AP7363 is stable with any type of capacitor, with no limitations on minimum or maximum ESR. The device is designed to have excellent transient response for most applications with a small amount of output capacitance. The device is also stable with multiple capacitors in parallel, which can be of any type of value. Additional capacitance helps to reduce undershoot and overshoot during transient loads. This capacitor sh ould be placed a s close as possible to OUT an d GND pins fo r optimum performance.

Adjustable Operation

The AP7363 provides output voltage from 0.6V to 5.0V through external resistor divider as shown below.

The output voltage is calculated by:

⎛ ⎜

V

OUT

Where V

Rearranging the equation will give the following that is used for adjusting the output to a particular voltage:

To maintain the stability of the internal reference voltage, R

REF

R

1

V

REF

⎜ ⎝

= 0.6V (the internal reference voltage)

⎛

V

OUT

⎜

R

2

⎜

V

REF

⎝

⎞

R

1

⎟

+=

1

−= 1

⎟

R

2

⎠

⎞ ⎟

⎟ ⎠

need to be kept smaller than 10kΩ.

2

No Load Stability

Other than external resistor divider, no minimum load is required to keep the device stable. The device will remain stable and regulated in no load condition.

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OOP G

OOP GAIN

P7363

Application Note (cont.)

Stability and Phase Margin

Any regulator which operates using a feedback loop must be compensated in such a way as to ensure adequate phase margin, which is defined as the difference between the phase shift and -180 degrees at the frequency where the loop gain cr osses unity (0 dB ). For most LD O regulators, the ESR of the output capacitor is required to create a zero to add enough phase lead to ensure stable operation. The AP7363 has a internal compensation circuit which maintains phase margin regardless of the ESR of the output capacitor, any type of capacitos can be used.

The two charts on the next page show the gain/phase plot of the AP7363 with an output of 1.2V, 10 μF ceramic output capacitor, delivering 1.5A load current and no load. It can be seen the phase margin is about 90° (which is very stable).

120 100

AIN (dB)

-20

L

-40

-60

-80

-100

-120

80 60 40 20

0

100

PHASE

GAIN

V = 2.7V

IN

V = 1.2V

OUT

I = 1.5A

L

C = 10µF CER

OUT

1k 10k 100k 1M

140 120 100 80 60

40 20 0

-20

-40

-60

-80

PHASE MARGIN (°)

FREQUENCY(Hz)

Gain-Bandwidth Plot for 1.5A Load

Short Circuit Protection

When output current at OUT pin is higher than current limit threshold, the current limit protection will be triggered and clamp the output current to prevent over-current and to protect the regulator from damage due to overheating.

Thermal Shutdown Protection

Thermal protection disables the output when the junction temperature rises to approximately +170°C, allowing the device to cool down. When the junction temperature reduces to approximately +160°C the output circuitry is enabled again. Depending on power dissipation, thermal resistance, and ambient temperature, the thermal protection circuit may cycle on and off. This cycling limits the heat dissipation of the regulator, protecting it from damage due to overheating.

Low Quiescent Current

The AP7363, consuming only around 0.5mA for all input range, provides great power saving in portable and low power applications.

Output Noise

This is the integrated value of the output noise over a specified frequency range. Input voltage and output load current are kept constant during the measurement. Results are expressed in µVrms or µV√Hz.

The AP7363 is a low noise regulator and needs no external noise reduction capacitor. Output voltage noise is typically 100μVrms overall noise level between 100 Hz and 100 kHz.

120 100

PHASE

80 60 40

(dB)

GAIN

20

0

-20

L

-40

V = 2.7V

IN

-60

V = 1.2V

OUT

I = 0A

-80

L

C = 10µF CER

-100

OUT

-120 100 1k 10k 100k 1M

FREQUENCY(Hz)

Gain-Bandwidth Plot for no Load

140 120 100 80 60

40 20 0

-20

-40

-60

-80

PHASE MARGIN (°)

Noise is specified in two ways: Output noise density is the RMS sum of all noise sources, measured at the regulator output, at a specific frequency (measured with a 1Hz

bandwidth). This type of noise is usually plotted on a curve as a function of frequency. Output noise voltage is the RMS sum of spot noise over a specified bandwidth. Spot noise is measured in units μV/√Hz or nV/√Hz and total

output noise is measured in μV(rms). The primary source of noise in low-dropout regulators is the internal reference.

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P7363

Application Note (cont.)

Power Dissipation

The device power dissipation and proper sizing of the thermal plane that is connected to the thermal pad is critical to avoid thermal shutdown and ensure reliable operation. Power dissipation of the device depends on input voltage and load conditions and can be calculated by:

P The maximum power dissipation, handled by the device, depends on the junction to ambient thermal resistance, and maximum ambient

temperature, which can be calculated by the equation in the following:

= (V

- V

D

IN

P

max_D

) X I

OUT

=

°+

R

θ

JA

)AT-C150(

Ordering Information

Part Number Package Code

AP7363-XXHA-7 HA U-DFN2030-8 3000/Tape & Reel -7

AP7363-XXSP-13 SP SO-8EP 2500/Tape & Reel -13

AP7363-XXE-13 E SOT223-3L 2500/Tape & Reel -13 AP7363-XXD-13 D TO252-3L

Note: 9. TO252 and SOT223 are only available with fixed output version.

Packaging

(Note 9)

Quantity Part Number Suffix

2500/Tape & Reel

7”/13” Tape and Reel

Marking Information

(1) U-DFN2030-8

AP7363

Document number: DS35059 Rev. 8 - 2

Device Package Identification Code

AP7363ADJ U-DFN2030-8 SA

AP7363-10 U-DFN2030-8 SB AP7363-12 U-DFN2030-8 SC AP7363-15 U-DFN2030-8 SD AP7363-18 U-DFN2030-8 SE AP7363-25 U-DFN2030-8 SF AP7363-33 U-DFN2030-8 SG

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Marking Information (cont.)

(2) SO-8EP

P7363

(3) SOT223

(4) TO252

AP7363

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Package Outline Dimensions (All dimensions in mm.)

Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.

(1) U-DFN2030-8

A

A1

D

e

(Pin #1 ID)

E

Z

C'0.25*45°

D2

A3

Seating Plane

E2

b

L

(2) SO-8EP

85

E1

14

F

Exposed Pad

H

A1

b

4° ± 3°

A

7

°

Bottom View

N

E

45

°

E0

Q

C

L

Gauge Plane

Seating Plane

9° (All si de s)

e

D

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U-DFN2030-8

Dim Min Max Typ

A 0.57 0.63 0.60 A1 0 0.05 0.02 A3 - - 0.15

b 0.20 0.30 0.25

D 1.95 2.05 2.00 D2 1.40 1.60 1.50

e - - 0.50

E 2.95 3.05 3.00

E2 1.50 1.70 1.60

L 0.35 0.45 0.40

Z - - 0.125 All Dimensions in mm

SO-8EP (SOP-8L-EP)

Dim Min Max Typ

A 1.40 1.50 1.45

A1 0.00 0.13 -

b 0.30 0.50 0.40 C 0.15 0.25 0.20 D 4.85 4.95 4.90

E 3.80 3.90 3.85 E0 3.85 3.95 3.90 E1 5.90 6.10 6.00

e - - 1.27

F 2.75 3.35 3.05

H 2.11 2.71 2.41

L 0.62 0.82 0.72

N - - 0.35

Q 0.60 0.70 0.65

All Dimensions in mm

P7363

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Package Outline Dimensions (cont.) (All dimensions in mm.)

Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.

(3)

SOT223

A

c2

A2

H

L4

A1

L

a

E1

(4)

TO252

A

A1

2X b2

E

b3

L3

D

e

3X b

Dim Min Max Typ

SOT223

A 1.55 1.65 1.60 A1 0.010 0.15 0.05 b1 2.90 3.10 3.00 b2 0.60 0.80 0.70

C 0.20 0.30 0.25

D 6.45 6.55 6.50

E 3.45 3.55 3.50 E1 6.90 7.10 7.00

e — — 4.60 e1 — — 2.30

L 0.85 1.05 0.95

Q 0.84 0.94 0.89

All Dimensions in mm

Dim Min Max Typ

A1 0.00 0.13 0.08 A2 0.97 1.17 1.07

b2 0.76 1.14 0.95 b3 5.21 5.46 5.33 c2 0.45 0.58 0.531

D1 5.21

E1 4.32

L3 0.88 1.27 1.08 L4 0.64 1.02 0.83

All Dimensions in mm

TO252

A 2.19 2.39 2.29

b 0.64 0.88 0.783

D 6.00 6.20 6.10

− −

e

− −

E 6.45 6.70 6.58

H 9.40 10.41 9.91 L 1.40 1.78 1.59

a 0° 10°

2.286

− −

−

P7363

AP7363

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Suggested Pad Layout

Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.

(1) U-DFN2030-8

(2) SO-8EP

Y2

Pin1

X1

X2

C

X

X2

Y

Y1

G

Dimensions

C 0.500 G 0.250

X 0.350 X1 1.500 X2 1.850

Y 0.600 Y1 1.600 Y2 3.300

Y2

(3) SOT223

Y1

Y2

X2

(4) TO252

Y2

AP7363

Document number: DS35059 Rev. 8 - 2

Y1

X1

X2

C

E1

C2

Y1

Y

X

C1

Z

C

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Dimensions

Dimensions Value (in mm)

X1 3.3

X2 1.2

Y1 1.6

Y2 1.6

C1 6.4 C2 2.3

Dimensions Value (in mm)

Z 11.6 X1 1.5 X2 7.0 Y1 2.5 Y2 7.0

C 6.9 E1 2.3

Value

(in mm)

Value

(in mm)

C 1.270

X 0.802 X1 3.502 X2 4.612

Y 1.505 Y1 2.613 Y2 6.500

P7363

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P7363

DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document o r products described herein in such applica tions shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages.

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Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks.

This document is written in English but may be translated into multiple languages for reference. Onl y the English version of this document is the final and determinative format released by Diodes Incorporated.

Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:

A. Life support devices or systems are devices or systems which:

1. are intended to implant into the body, or

2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the

labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the

failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and

acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.

www.diodes.com

IMPORTANT NOTICE

LIFE SUPPORT

AP7363

Document number: DS35059 Rev. 8 - 2

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December 2012