Diodes AP7115 User Manual

AP7115

150mA LOW DROPOUT LINEAR REGULATOR WITH

SHUTDOWN

Features

• Wide input voltage range from 2.5V to 5.5V

• 200mV low dropout voltage at 150mA output current

• Guaranteed 150mA output current.

• Low quiescent current 50µA

• Output voltage from 1.0V to 3.5V

• ±2% output voltage accuracy

• Low temperature drift at output voltage

• High PSRR

• Fast transient response

• Current limit protection

• Short circuit protection

• Thermal shutdown protection

• SOT25 and SOT353: Available in “Green” Molding

Compound (No Br, Sb)

• Lead Free Finish/RoHS Compliant (Note 1)

Applications

• Wireless Communication

• GSM/GPRS Cellular Phones

• Handheld Mobile Device s

• Battery Powered Devices

• CD-ROM, DVD, and LAN Cards

• PC and Notebook Peripherals

Typical Application Circuit

V

IN

C

IN

1µF

AP7115

IN

GND

General Description

The AP7115 is a 150mA, fixed output voltage, low dropout linear regulator. The device includes pass element, error amplifier, band gap reference, current-limit and thermal shutdown circuit. The characteristics of low dropout voltage and low quiescent current make it suitable for use in battery powered devices. The typical quiescent current is approximately 50µA. Several fixed output voltages are available from 1.0V to 3.5V. Additional protection is provided with built-in current-limit and thermal-shutdown functions.

ON

EN

OFF

EN

OUT

BP

C

BP

0.1µF

C

V

OUT

1µF

AP7115 Rev. 10 1 of 11 MAY 2009

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Ordering Information

AP7115

150mA LOW DROPOUT LINEAR REGULATOR WITH

SHUTDOWN

AP7115 - XX XX G - 7

Green

G : Green

Packing

7 : Tape & Reel

7” Tape and Reel

Quantity Part Number Suffix

Device

Output voltage Package

10 : 1.0V 12 : 1.2V 15 : 1.5V 18 : 1.8V 25 : 2.5V 28 : 2.8V

29 : 2.85V 30 : 3.0V 33 : 3.3V 35 : 3.5V

Package

Code

W : SOT25

SE : SOT353

Packaging

(Note 2)

AP7115-XXWG-7 W SOT25 3000/Tape & Reel -7 AP7115-XXSEG-7 SE SOT353 3000/Tape & Reel -7

Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html

2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at

http://www.diodes.com/datasheets/ap02001.pdf.

.

Pin Assignments

( Top View )

IN

1

5

OUT

2

GND

EN

SOT25 / SOT353

43

BP

Pin Descriptions

Pin Name

IN

GND

EN BP

OUT

Pin NO.

1 2 3 4 5

Voltage Input Ground Chip Enable Control Band-Gap Bypass Voltage Output

AP7115 Rev. 10 2 of 11 MAY 2009

Description

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Block Diagram

AP7115

150mA LOW DROPOUT LINEAR REGULATOR WITH

SHUTDOWN

IN

EN

Current

Limit

Enable

-

+

Bandgap

Error

Amp

0.8V

OUT

Thermal

Shutdown

BP

GND

Absolute Maximum Ratings

Symbol Parameter Rating Unit

ESD HBM Human Body Model ESD Protection

ESD MM Machine Model ESD Protection 400 V

VIN Input Voltage -0.3~5.5 V

VCE CE Pin Voltage -0.3~5.5 V

V

Output Voltage -0.3~Vin+0.3 V

OUT

VBP Band Gap Bypass Pin Voltage -0.3~5.5 V

PD Power Dissipation 500 mW

TJ Operating Junction Temperature Range -40 to +125

TST Storage Temperature Ran ge -65 to +150

3.5

KV

o

C

o

C

Recommended Operating Conditions

Symbol Parameter Min Max Unit

VIN Input Voltage 2.5 5.5 V

I

Output Current - 150 mA

OUT

TA Operating Ambient Temperature -40 85

AP7115 Rev. 10 3 of 11 MAY 2009

www.diodes.com © Diodes Incorporated

o

C

AP7115

150mA LOW DROPOUT LINEAR REGULATOR WITH

SHUTDOWN

Electrical Characteristics (V

= 3.3V, IL = 30mA, C

CC

= 1μF, C

IN

= 1μF, TA = 25oC)

OUT

Symbol Parameter Conditions Min Typ. Max Unit

System Supply Input

VIN Operating input voltage IL= 0 ~ 150mA 2.5 5.5 V

= V

ΔV

OUT/VOUT

Output Voltage Accu racy

V

IN

1mA ≤ I

+ 1V where

OUT

≤ 50mA

OUT

-2 2 %

VDO Dropout Voltage IL= 150mA 200 300 mV I

Output Current V

OUT

IQ Quiescent Current

I

Shutdown Current

shutdown

PSRR Power Supply Rejection Ratio I

I

Current Limit 200 250 mA

limit

Thermal Management

T

Thermal Shutdown 150

shutdown

- V

= 1V 150 mA

OUT

= V

+ 1V where

OUT

= 0 and VCE= VIN

= V

+ 1V where

OUT

= 0 and VCE= 0

50 80

0.1 1

= 30mA, f = 1kHz 70 dB

V I

OUT

V I

OUT OUT

IN IN

IN

µA µA

o

C

Reference Voltage

ΔV ΔV

REF OUT

Tempco of Bandgap Refe rence 30 50

/ΔT

= 30mA, -40℃ ≤ T ≤ 85℃

Tempco of Output Voltage

/ΔT

I

OUT

50 100

ppm/ ppm/

Control and Protection

V

2.0 V

IH,CE

V

0.7 V

IL,CE

ICE CE Pin Leakage Current

V

= V

CE

V

= V

CE

= 5.0V and VSS= 0V 0.01 0.1

IN @VIN SS @VIN

= 5.0V and V

= 0V 0.01 0.1

SS

µA µA

Regulation

V

+ 0.5V ≤ VIN ≤ 5.5V where

ΔVO/ΔVIN

ΔV

LOAD

Line Regulation Load Regulation

OUT

>2.0V, I

V

OUT

1mA ≤ I V

= V

IN

= 30mA

OUT

≤ 150mA where

L

+ 1V

OUT

0.02 0.1 %/V

0.003 0.006 %/mA

Noise

e

Output Noise BW = 10Hz ~ 100kHz 50

n

Thermal Resistance

θ

Notes: 3. Test condition for SOT25 and SOT353: Device mounted on FR-4 substrate PC board, 2oz copper, with minimum recommended pad layout.

Thermal Resistance

JA

Junction-to-Ambient Thermal Resistance

JC

Junction-to-Case

SOT25 (Note 3) - 200 SOT353 (Note 3) 337 SOT25 (Note 3) - 52 SOT353 (Note 3) 121

µV

o

C/W

o

C/W

o

C/W

o

C/W

rms

o

C

o

C

AP7115 Rev. 10 4 of 11 MAY 2009

www.diodes.com © Diodes Incorporated

150mA LOW DROPOUT LINEAR REGULATOR WITH

Typical Operating Characteristics

AP7115

SHUTDOWN

Qui esce n t cu r ren t vs. V cc

( V

=2.5~5.5V, I

IN

80

70

60

50

40

30

Qu iescen t current (uA)

20

2.5V 3.0V 3.5V 4.0V 4.5V 5.0V 5.5V

OUT

=0mA )

Vcc

Current limit vs. Te m perature

( V

=2.5V, V

270

250

230

210

190

Current limit (mA)

170

150

-40℃ -20℃ 0℃ 25℃ 50℃ 85℃

IN

Temper ature

OUT

=1.0V )

Qu iescen t cu rrent vs. Temperature

( V

=5V, I

IN

80

70

60

50

40

30

Quiescent current (uA)

20

-40℃ -20℃ 0℃ 25℃ 50℃ 85℃

=0mA )

OUT

Temperature

Current limit vs. Temperature

=5V, V

( V

330

310

290

270

250

230

210

190

Current limit (mA)

170

150

-40℃ -20℃ 0℃ 25℃ 50℃ 85℃

IN

=1.0V )

OUT

Tempe rature

Iout vs. Dropout voltage

=25℃ )

( T

250

200

150

100

50

Dropout voltage (mV)

0

0mA 20mA 40m A 60mA 80mA 100m A 120mA 150mA

A

Iout

370

320

270

220

170

Cur ren t limit (mA)

120

Current limit vs. Input voltage

=25℃ )

( T

A

2.5V 3.0V 3. 5V 4. 0V 4.5V 5.0V 5. 5V

Input voltage

AP7115 Rev. 10 5 of 11 MAY 2009

www.diodes.com © Diodes Incorporated

150mA LOW DROPOUT LINEAR REGULATOR WITH

Typical Operating Characteristics (Continued)

AP7115

SHUTDOWN

Short current vs. Temperature

( V

=2.5V)

68

65

62

59

56

Sho rt current (mA)

53

50

-40℃ -20℃ 0℃ 25℃ 50℃ 85℃

IN

Temperature

Output Noise Output Noise

Short current vs. Temperature

( V

=5V )

74

71

68

65

62

59

56

Shor t current (mA)

53

50

-40℃ -20℃ 0℃ 25℃ 50℃ 85℃

IN

Temper ature

Output Noise

AP7115 Rev. 10 6 of 11 MAY 2009

150mA LOW DROPOUT LINEAR REGULATOR WITH

Typical Operating Characteristics (Continued)

Load Transient Response Load Transient Response

AP7115

SHUTDOWN

Start Up (EN vs. V

) Start Up (EN vs. V

OUT

) Start Up (EN vs. V

OUT

)

OUT

)

OUT

AP7115 Rev. 10 7 of 11 MAY 2009

150mA LOW DROPOUT LINEAR REGULATOR WITH

Application Note

 Input Capacitor An 1uF input capacitor is required between the AP7115 input pin and GND. There are no requirements for the ESR on input capacitor, but tolerance and temperature coefficient must be considered.

 Output Capacitor The AP7115 can work with very small ceramic output capacitors (1uF or greater). Higher capacitance values help to improve transient. The output capacitor’s ESR is critical because it from a zero to provide phase lead which is required for loop stability. Figure below is Cout ESR vs. Load Current.

AP7115 Region of Stable Cout ESR vs.

Load Current

100

10

AP7115

SHUTDOWN

 PCB Layout Optimum performance can only be achieved when the device is mounted on a PC board according to the diagram below:

1

Stable

0.1

Cout ESR (Ω)

0.01 0 20 40 60 80 100 120 140 160

Load Current (mA)

 Band-Gap Bypass Capacitor

0.1uF bypass capacitor Between BP pin and GND can reduces output voltage noise.

 Shutdown Input Operation The AP7115 is shutdown by pulling the EN pin low, and turned on by driving the input high. If the shutdown feature is not required, the EN pin should be tied to VIN to keep the regulator on at all times.

 Dropout Voltage

V

DROPOUT＝VIN－VOUT＝RDS(ON)×IOUT

 Current Limit The AP7115 monitors and controls the PMOS’ gate voltage, limiting the output current to 250mA(typ.). The output can be shorted to ground for an indefinite period of time without damaging the part.

 Thermal Considerations Thermal Shutdown Protection limits power dissipati on in A P7115 . When the operation junction temperature exceeds 155°C, the Over Temperature Protection circuit starts the thermal shutdown function and turns the pass element off. The pass element turn on again after the junction temperature cools by 30°C. For continuous operation, do not exceed absolute maximum operation junction temperature 125°C. The power dissipation definition in device is:

PD = (VIN − V

The maximum power dissipation depends on the thermal resistance of IC package, PCB layout, the rate of surroundings airflow and temperature difference between junction to ambient. The maximum power dissipation can be calculated by the following formula:

P

= ( T

D(MAX)

Where T 125°C, T to ambient thermal resistance.

J(MAX)

is the ambient temperature and the θJA is the junction

A

) x I

OUT

J(MAX)

is the maximum operation junction temperature

+ VIN x IQ

OUT

- TA ) / θJA

AP7115 Rev. 10 8 of 11 MAY 2009

r

Marking Information

AP7115

150mA LOW DROPOUT LINEAR REGULATOR WITH

SHUTDOWN

( Top View )

5

7

4

XX : Identification code

Y

: Year 0~9

XX

W X

Y

: Week : A~Z : 1~26 week;

W

a~z : 27~52 week; z represents 52 and 53 week

: A~Z : Green

1 2 3

Part Numbe

SOT25 SOT353

AP7115-10W FO AP7115-10SE GO AP7115-12W FP AP7115-12SE GP AP7115-15W FQ AP7115-15SE GQ AP7115-18W FR AP7115-18SE GR AP7115-25W FS AP7115-25SE GS AP7115-28W FT AP7115-28SE GT AP7115-29W FU AP7115-29SE GU AP7115-30W FV AP7115-30SE GV AP7115-33W FW AP7115-33SE GW AP7115-35W FX AP7115-35SE GX

AP7115 Rev. 10 9 of 11 MAY 2009

Identification Code

X

Part Numbe

Identification Code

150mA LOW DROPOUT LINEAR REGULATOR WITH

Package Information (All Dimensions in mm)

(1) Package Type: SOT25

AP7115

SHUTDOWN

(2) Package Type: SOT353

2.0/2.2

1.15/ 1.35

1.8/2.2

1.10M ax.

0/0.1 0.9/ 1.0

0.10/0.30

C

L

0.65Bsc.

0.1/0.22

DETAIL"A"

C

L

Gauge Plane

0.25/ 0.40

"A"

AP7115 Rev. 10 10 of 11 MAY 2009

AP7115

150mA LOW DROPOUT LINEAR REGULATOR WITH

SHUTDOWN

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 subs idiaries reserve the right to make modific ations, enhancem ents, improvem ents, correctio ns or other changes without further notic e to this document and any product des cri bed herein. Diodes Inc orporat ed does not assum e any liabi lity arising out of the applicati on or use of this document or any produc t described herein ; neither does Diodes In corporat ed convey any license under its patent or trademark rights, nor the rights of others . Any Customer or user of t his document or produc ts described herein in such applications 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.

Diodes Incorporated do es not warrant or accept an y liabilit y whatsoever in re spect of any product s purchased through unaut horized sales channel. Should Customers purchase or use Diod es Incorporated products for any unintend ed or unauthorized application, Custom ers shall indemnify and hold Diodes Incorpor ated and its repres entatives harmless agai nst all claims, damages , expenses, and atto rney fees arising out of, directly or indi re ct l y, any c l a im of person al i nj u ry or death ass oci a t e d with suc h uni nte nde d or un authorized application.

Products described h erein may be covered by one or more United States, i nternational or f oreign patents pendi ng. Product names and markings noted herein may also be covered by one or more Uni ted S tates, international or foreign tradem a rks.

Diodes Incorporated products are specific ally not authorized for use as critical components in life support devic es or systems without the express written approval of t he Chief Execut ive Officer of Diodes Incorporated. As used herei n :

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 ins t ruc t i ons 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 syst em whose failu re to perform can be rea sonably expect ed

to cause the failure of the life support device or to affect its safety or effectiveness.

Customers represent that they have all nec essary expertise in the safet y and regulatory ramificati ons 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 indemnif y Diodes Incorporated and its representati ves 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

AP7115 Rev. 10 11 of 11 MAY 2009