Diodes AP7165 User Manual

AP7165

600mA LOW DROPOUT REGULATOR WITH POK

Description

The AP7165 is a 600mA, adjustable output voltage, ultra-low dropout linear regulator. The device includes pass e lement, 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. A Power-OK (POK) output is available for power sequence control.

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 125µA.

Built-in current-limit and thermal-shutdown functions prevent IC from damage in fault conditions. The AP7165 are available in U-DFN3030-10 and SO-8EP packages.

Pin Assignments

IN

1

IN

2 3

POK

NC

4

EN

5

IN

1

Features

• Wide input voltage range: 2.2V – 5.5V

• 300mV very low dropout at 500mA load

• Very low quiescent current (I

• ± 2.5% total accuracy over line, load and temperature

• Adjustable output voltage range: 0.8V to 5.0V

• Very fast transient response

• High PSRR

• Accurate voltage regulation

• Current limiting and short circuit protection

• Thermal shutdown protection

• Stable with any type output capacitor ≥ 4.7µF

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

• U-DFN3030-10 and SO-8EP: Available in “Green”

Molding Compound (No Br, Sb)

• Lead Free Finish/RoHS Compliant (Note 1)

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.

): 125µA typical

Q

POK

EN

Applications

• Servers and laptops

• Smart phone and PDA

• MP3/MP4

• Bluetooth headset

• Low and medium power applications

• FPGA and DSP core or I/O power

IN

AP7165

Document number: DS31270 Rev. 7 - 2

1 of 15

www.diodes.com

2

3

4

(Top View)

U-DFN3030-10

(Top View)

SO-8EP

OUT

10

9

OUT FB

8

NC

7

GND

6

8

OUT

7

OUT

6

FB

5

GND

March 2012

Typical Application Circuit

V

IN

AP7165

600mA LOW DROPOUT REGULATOR WITH POK

V

OUT

IN

OUT

1µF

Enable

POK

EN

AP7165

FB

GND

R

1

R

2

⎛ ⎜

REFOUT

⎜ ⎝

⎞

R

1

⎟

+=

1VV

⎟

R

2

⎠

Pin Descriptions

Name

IN 1, 2 1, 2

POK 3 3 Power-OK output, active-high open-drain.

EN 5 4 Enable input, active high.

GND 6 5 Ground.

FB 8 6 Output feedback.

OUT 9, 10 7, 8

NC 4, 7 NA No connection.

U-DFN3030-10 SO-8EP

Pin #

Description

Voltage input pins, to be tied together externally. Bypass to ground through at least 1µF capacitor.

Voltage output pins, to be tied together externally. Bypass to ground through at least 4.7µF ceramic capacitor.

10µF

AP7165

Document number: DS31270 Rev. 7 - 2

2 of 15

www.diodes.com

March 2012

Functional Block Diagram

AP7165

600mA LOW DROPOUT REGULATOR WITH POK

IN

EN

POK

Gate

Driver

Current Limit and Thermal

Shutdown

0.8V

0.744V

OUT

FB

GND

Absolute Maximum Ratings

Symbol Parameter Ratings Unit

ESD HBM Human Body Model ESD Protection 4 KV

ESD MM Machine Model ESD Protection 300 V

VIN

Input Voltage 7 V

V

OUT, FB, POK, EN Voltage Continuous Load Current Internal Limited

T

Jmax

TST

PD

Notes: 2. Ratings apply to ambient temperature at 25°C

Maximum Junction Temperature 150 °C Storage Temperature Range -65 ~ +150 °C

Power Dissipation

U-DFN3030-10 (Note 2, 4) 3.1 W SO-8EP (Note 2, 5) 4.0 W

+0.3

IN

Recommended Operating Conditions

Symbol Parameter Min Max Unit

V

I

OUT

T

IN

A

Input voltage 2.2 5.5 V Output Current 0 600 mA Operating Ambient Temperature -40 +85 °C

AP7165

Document number: DS31270 Rev. 7 - 2

3 of 15

www.diodes.com

V

March 2012

AP7165

Electrical Characteristics

(TA = 25oC, V

Symbol Parameter Test Conditions Min Typ. Max Unit

I

Q

I

SHDN

V

ROPOUT

V

REF

I

FB

V

OUT

ΔV

OUT

ΔV

IN

ΔV

/ V

OUT

tST

PSRR Power Supply Rejection Ratio

I

LIMIT

I

SHORT

V V I

EN

VOL

V

POK_TH_UP

V

POK_Hys

POK deglitch

I

POK_LK

T

SHDN

T

HYS

θ

JA

θ

JC

Notes: 3. POK pin must be disconnected from IN pin.

4. Test condition for U-DFN3030-10: Device mounted on FR-4 2-layer board, 2oz copper, with minimum recommended pad on top layer and 6 vias to bottom layer 1.0”x1.5” ground plane.

5. Test condition for SO-8EP: Device mounted on 2" x 2" FR-4 substrate PCB, 2oz copper, with minimum recommended pad on top layer and thermal vias to bottom layer ground plane.

IL IH

= V

IN

OUT

+1V, C

= 1µF, C

IN

OUT

Input Quiescent Current Input Shutdown Current Dropout Voltage FB reference voltage 0.8 V FB leakage ⎯ 0.01 1 µA

Output Voltage Total Accuracy

OUT

V

/

Line Regulation

Load Regulation

OUT

Start-up Time, from EN high to POK high

Current limit Short-circuit Current EN Input Logic Low Voltage 0.4 V EN Input Logic High Voltage 1.4 V EN Input leakage POK output low voltage Force 2mA 100 200 mV

Output voltage (rising) POK threshold Output voltage POK hysteresis 4%

POK leakage current Thermal shutdown threshold 150 °C Thermal shutdown hysteresis 25 °C

Thermal Resistance Junction-toAmbient

Thermal Resistance Junction-to- Case

600mA LOW DROPOUT REGULATOR WITH POK

= 10µF, V

= VIN, unless otherwise stated)

EN

= 0

I

OUT

V V

EN OUT

= 0V, I

≥ 1.5V, I

= 0 (Note 3)

OUT

OU T

= 500mA

Over line, load and temperature

V

= V

IN

I

OUT

I

OUT

V

EN

I

OUT

1kHz, V V

OUT

V

OUT

VIN = 3.3V, V

V

EN

+1V to 5.5V,

OUT

= 1mA from 1mA to 500mA = 0V to 2.0V,

= 100mA, VIN = 3.3V

= 3.3V,

IN

= 1.2V, I = 1.8V, R

OUT

= 0mA

OUT

< 0.2V

= 0.5Ω

= 0V or 5.5V

FB (or OUT for fixed version) rising

V

= 3.3V, V

IN

V

POK

= 5.5V

OUT

= 1.2V

⎯ 125 170 µA

-1 0.01 +1 µA 300 400 mV

-2.5 +2.5 %

0.015 %/V

-1.0 +1.0 %

170 µs

60 dB

600 950 mA

380 mA

⎯ 0.01 1 µA

87% 92% 97%

150 µs

⎯ 0.01 1 µA

U-DFN3030-10 (Note 4) 40 SO-8EP (Note 5) 27

U-DFN3030-10 (Note 4) 9 SO-8EP (Note 5) 4

V V

o

C/W

o

C/W

o

C/W

o

C/W

ref

AP7165

Document number: DS31270 Rev. 7 - 2

4 of 15

www.diodes.com

March 2012

OUTPU

T VOLTAG

OUTPU

T VOLTAG

Q

U

CEN

T CUR

REN

T

Q

U

C

T

CUR

R

T

Q

U

CENT

C

U

R

T

Typical Performance Characteristics

3.40

AP7165

600mA LOW DROPOUT REGULATOR WITH POK

1.90

V = 1.8V

OUT

3.35

E (V)

3.30

3.25

3.20

-50 -25 0 50 100 125

25 75

TEMPERATURE (°C)

Output Voltage vs. Temperature

170

V = 1.2V

OUT

160

150

(µA)

I = 300mA

OUT

140

130

120

IES

110

I = 0mA

OUT

100

1.85

E (V)

1.80

1.75

-50 -25 0 50 100 125

25 75

TEMPERATURE (°C)

Output Voltage vs. Temperature

170

V = 1.8V

OUT

160

I = 600mA

OUT

150

140

130

120

I = 300mA

110

QUIESCENT CURRENT (µA)

OUT

I = 0mA

OUT

100

90

-50 -25 0 100 12525 75 INPUT VOLTAGE ( V)

Quiesce nt Current vs. Input Voltage

150 140

V = 3.3V,

IN

V = 1.8V

(µA) EN

EN IES

130

120

110

100

90

OUT

V = 3.3V,

IN

V = 1.2V

OUT

V = 5.0V,

IN

V = 3.3V

OUT

V = 2.2V,

IN

V =1.0V

OUT

90

2.5 3.0 3.5 5.0 5.54.0 4.5 INPUT VOLTAGE (V)

Quiescent Current vs. Input Voltage

150

V = 1.8V

OUT

140

(µA)

V = 3.3V

EN

130

IN

120

IES

V = 2.5V

IN

110

80

70

-50 -25 0 50 100 12525 75 TEMPERATURE (°C)

Quiesce nt Current vs. Temperature

AP7165

Document number: DS31270 Rev. 7 - 2

5 of 15

www.diodes.com

100

0.0 0.1 0.2 0.3 0.5 0.60.4 I (A)

OUT

Quiesce nt C ur r ent vs. I

OUT

March 2012

R

O

ROP

A

C

HAN

G

%

C

A

C

URR

N

T

M

T

PSR

R

600mA LOW DROPOUT REGULATOR WITH POK

Typical Performance Characteristics (cont.)

0.810

0.805

0.800

LTAGE (V)

0.795

ENCE V

0.790

EFE

0.785

0.780

-50 -25 0 25 50 75 100 125 TEMPERATURE (°C)

Reference Voltage vs. Temperature

0.10

V = 1.2V

OUT

I = 1mA

OUT

0.05

/V)

OUT

0.00

E in V (

-0.05

25°C

V = 2.2V

IN

V = 3.3V

IN

V = 5.5V

IN

85°C

-40°C

AP7165

400

V = 3.3V

350

300

GE (mV)

250

200

150

OUT VOLT

100

D

OUT

NGE in V (%) H

OUT

90°C

-45°C

25°C

50

0

0 200 400 600

I (mA)

OUT

Dropout V ol t age vs. I

OUT

0.6

0.5

0.4

0.3

0.2

0.1

-0.10

1.08

2.5 3.5 5.0 5.54.54.03.0 V (V)

IN

Line Regulation

0.0

-0.2 0.0 0.60.40.2

Load Regulatio n

-40

I(A)

OUT

1.06

-50

-60

(dB)

-70

(A) I

LI E

1.04

1.02

1.00

0.98

0.96

0.94

-80

0.92

0.90

-50 -25 0 25 50 75 100 TEMPERATURE (°C)

Current LI m i t vs. Te m perature

AP7165

Document number: DS31270 Rev. 7 - 2

6 of 15

www.diodes.com

-90 100 1K 100K10K

FREQUENCY (Hz)

PSRR (V = 1.2V)

OUT

March 2012

(

)

600mA LOW DROPOUT REGULATOR WITH POK

Typical Performance Characteristics (cont.)

Line Transient Response

V

= 3.3V to 4.4V

IN

C

= 10uF

OUT

Ceramic

Line Transient Response

= 4.4V to 3.3V

V

IN

C

= 10uF

OUT

(Ceramic)

AP7165

VIN 1V/div

V

OUT

50mV/div

V

OUT

50mV/div

I

OU

200mA/d

Time (50µs/div)

Output Load Transient Response

=1.2V)

(V

OUT

600mA

50mA

C

=470uF (electrolytic)

OUT

C

=10uF (Ceramic)

C

=1uF (Ceramic

1A/us

50mV/div

200mA/div

VIN 1V/div

V

OUT

50mV/div

V

I

Time (50µs/div)

Output Load Transient Response

= 1.8V)

(V

OUT

600mA

50mA

C

=470uF (electrolytic

C

=10uF (Ceramic

C

=1uF (Ceramic

1A/us

Time (100µs/div)

Start-up Time (V

VEN

2V/div

V

OUT

1V/div

V

POK

2V/div

OUT

C

=1.2V, I

=10uF

Time (50µs/div)

AP7165

Document number: DS31270 Rev. 7 - 2

OUT

=0.1A)

VEN 2V/div

V

OUT

1V/div

V

POK

2V/div

7 of 15

www.diodes.com

Time (100µs/div)

Start-up Time (V

Time (50µs/div)

OUT

C

=1.2V, I

=10uF

=600mA)

OUT

March 2012

HOR

T CIRCUIT C

U

R

REN

T

HOR

T CIRCUIT C

U

R

T

600mA LOW DROPOUT REGULATOR WITH POK

Typical Performance Characteristics (cont.)

420

V = 1.2V

410

(mA)

400

390

380

OUT

(mA) EN

500

450

400

V = 1.2V

OUT

AP7165

370

S

360

350

2.0 2.5 3.0 3.5 4.0 4.5 5.0 INPUT VOLTAGE ( V)

Short Circuit Current vs. Input Voltage

Current Limit Protection

= 1.8V)

(V

OUT

V

OUT

500mV/div

I

OUT

500mA/div

Time (50µs/div)

350

S

350

-50 -25 0 25 50 75 TEMPERATURE (°C)

Short Ci rc ui t Current vs. Temperature

Current Limit & Short Circuit Protection

= 0.8V)

(V

OUT

V

OUT

500mV/div

Current Limit Protection

I

OUT

1A/div

Short Circuit Protection

Time (500µs/div)

Short Circuit Protection (V

V

OUT

500mV/di

Current Limit Protection

I

OUT

500mA/di

Time (2ms/div)

= 1.8V)

OUT

Short Circuit Protection

Short Circuit Recovery (V

V

OUT

500mV/div

I

OUT

500mA/div

Time (50µs/div)

OUT

= 1.8V)

AP7165

Document number: DS31270 Rev. 7 - 2

8 of 15

www.diodes.com

March 2012

600mA LOW DROPOUT REGULATOR WITH POK

Application Notes

Input Capacitor

A 1µF ceramic capacitor is recommended to connect between IN and GND pins to decouple input power supply glitch and noise. The amount of the capacitance may be increased without limit. A lower ESR (Equivalent Series Resistance) capacitor allows the use of less capacitance, while higher ESR type requires more capacitance. This input capacitor should be located as close as possible to the device to assure input stability and less noise. For PCB layout, a wide copper trace is required for both IN and GND.

Output Capacitor

The output capacitor is required to stabilize and help the transient response of the LDO. The AP7165 is designed to have excellent transient response for most applications with a small amount of output capacitance. The AP7165 is stable for all available types and values of output capacitors ≥ 4.7μF. 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. This capacitor should be placed as close as possible to OUT and GND pins for optimum performance.

Adjustable Operation

The AP7165 provides output voltage from 0.8V to 5.0V through external resistor divider as shown below.

V

IN

C

IN

The output voltage is calculated by:

Where V

= 0.8V (the internal reference voltage).

REF

100kOhm

Enable

IN

POK

EN

AP7165

REFOUT

⎛ ⎜

⎜ ⎝

OUT

GND

1VV

AP7165

Document number: DS31270 Rev. 7 - 2

FB

R

1

+=

R

2

V

OUT

C

R

1

R

2

⎞ ⎟

⎟ ⎠

OUT

www.diodes.com

AP7165

Rearranging the equation will give the following equation to find the approximate resistor divider values:

⎛

V

OUT

⎜

RR

21

⎜

V

REF

⎝

To maintain the stability of the internal reference voltage, R

needs to be kept smaller than 250kΩ.

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.

ENABLE/SHUTDOWN Operation

The AP7165 is turned on by setting the EN pin high, and is turned off by pulling it low. If this feature is not used, the EN pin should be tied to IN pin to keep the regulator output on at all time. To ensure proper operation, the signal source used to drive the EN pin must be able to swing above and below the specified turn-on/off voltage thresholds listed in the Electrical Characteristics section under V

and VIH.

IL

POWER-OK

The Power-Ok (POK) pin is an active high open-drain output. It can be connected to any 5.5V or lower rail through an external pull-up resistor. The recommended sink current of POK pin is up to 4mA, so the pull-up resistor for POK should be in the range of 10kΩ to 1MΩ. If output voltage monitoring is not needed, the POK pin can be left floating.

Current Limit 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 approximately 950mA (600A min) to prevent over-current and to protect the regulator from damage due to overheating.

Short Circuit Protection

When OUT pin is short-circuited to GND or OUT pin voltage is less than 200mV, short circuit protection will be triggered and clamp the output current to approximately 380mA. This feature protects the regulator from overcurrent and damage due to overheating.

9 of 15

⎞ ⎟

−= 1

⎟ ⎠

March 2012

600mA LOW DROPOUT REGULATOR WITH POK

Application Notes (cont.)

Low Quiescent Current

The AP7165, consuming only around 125µA for all input range and output loading, provides great power saving in portable and low power applications.

Wide Output Range

The AP7165, with a wide output range of 0.8V to 5.0V, provides a versatile solution for many portable and low power applications.

Thermal Shutdown Protection

Thermal protection disables the output when the junction temperature rises to approximately +150°C, allowing the device to cool down. When the junction temperature reduces to approximately +125°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.

AP7165

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 ensuring reliable operation. Power dissipation of the device depends on input voltage and load conditions and can be calculated by:

xI)VV(P −=

OUTOUTIND

The AP7165 is available in the U-DFN3030-10 and SO8EP packages, both with exposed pad, which is the primary conduction path for heat to the printed circuit board (PCB). The pad can be connected to ground or be left floating; however, to ensure the device will not overheat, it should be attached to an appropriate amount of copper PCB area.

However, the maximum power dissipation that can be handled by the device depends on the maximum junction to ambient thermal resistance, maximum ambient temperature, and maximum device junction temperature, which can be approximated by the equation below:

−°+

)TC145(

=

)T(max@P

AD

A

R

JA

θ

AP7165

Document number: DS31252 Rev. 7 - 2

10 of 15

www.diodes.com

March 2012

X

P

Ordering Information

AP7165

600mA LOW DROPOUT REGULATOR WITH POK

AP7165 -XX G-

Package Green

FN :

U-DFN3030-10

SP :

SO-8E

Device

AP7165-FNG-7 FN U-DFN3030- 10 NA NA 3000/T ape & Reel -7 AP7165-SPG-13 SP SO-8EP NA NA 2500/Tape & Reel -13

Notes: 6. 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.

Package

Code

Packaging

(Note 2)

G : Green

Quantity

Tube 7”/13” Tape and Reel

Part Number

Suffix

Packing

7/13 : T ape & Reel

Quantity Part Number Suffix

Marking Information

(1) U-DFN3030-10

( Top View )

XX : Identification Code

Y

: Year : 0~9

W

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

a~z : 27~52 week; z represents

W X

Y

XX

52 and 53 week

X

: A~Z : Green

Part Number Package Identification Code

AP7165 U-DFN3030-10 B2

(2) SO-8EP

( Top View )

X

5

G : Green

YY

: Year : 08, 09,10~

WW

: Week : 01~52; 52

E

represents 52 and 53 week X

: Internal Code

Logo

Part No.

8

AP7165 YY

WW X

SOP-8L-EP

41

AP7165

Document number: DS31252 Rev. 7 - 2

11 of 15

www.diodes.com

March 2012

A

Package Outline Dimensions

(1) Package Type: U-DFN3030-10

Pin#1 ID

A

A1

D

D2

E

E2

e

z

(2) Package Type: SO-8EP

b

85

14

E1

b

9° (All s i des)

4° ± 3°

e

A1

D

A

Notes: 7. All dimensions are in millimeters. Angles are in degrees.

8. Coplanarity applies to the exposed heat sink slug as well as the terminals.

L

N

7

°

3

Bottom View

SEATING PLANE

45

AP7165

600mA LOW DROPOUT REGULATOR WITH POK

U-DFN3030-10

Dim Min Max Typ

A 0.57 0.63 0.60

A1 0 0.05 0.02

E0

A3

⎯ ⎯

b 0.20 0.30 0.25 D 2.90 3.10 3.00

D2 2.30 2.50 2.40

e

⎯ ⎯

E 2.90 3.10 3.00

E2 1.50 1.70 1.60

L 0.25 0.55 0.40 z

⎯ ⎯

All Dimensions in mm

Exposed Pad

H

F

E

°

Q

C

L

Gauge Plane Seating Plane

Dim Min Max Typ

0.15

0.50

0.375

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

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

AP7165

Document number: DS31252 Rev. 7 - 2

12 of 15

www.diodes.com

March 2012

Suggested Pad Layout

(1) Package Type: U-DFN3030-10

(2) Package Type: SO-8EP

Y

X

2

C

Z

X

2

Y

1

X

1

C

AP7165

600mA LOW DROPOUT REGULATOR WITH POK

Dimensions Value (in mm)

X1

G

Y

X

Z 2.60

G 0.15

X 1.80

X1 0.60

Y 0.30

C 0.50

Dimensions

C 1.270

X 0.802 X1 3.502 X2 4.612

Y 1.505 Y1 2.613 Y2 6.500

Value

(in mm)

AP7165

Document number: DS31252 Rev. 7 - 2

13 of 15

www.diodes.com

March 2012

Taping Orientation (Note 9)

For U-DFN3030-10

AP7165

600mA LOW DROPOUT REGULATOR WITH POK

Notes: 9.The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf.

AP7165

Document number: DS31252 Rev. 7 - 2

www.diodes.com

14 of 15

March 2012

AP7165

600mA LOW DROPOUT REGULATOR WITH POK

IMPORTANT NOTICE

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 or products 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 does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.

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.

LIFE SUPPORT

Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or s ystems 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

AP7165

Document number: DS31252 Rev. 7 - 2

15 of 15

www.diodes.com

March 2012