Diodes AP1609 User Manual

AP1609

PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER

Features

• Input Voltage Range: 2.5~6V

• Output Voltage Range: 3.0~17V (±2.5%)

• PWM/PFM Switching Control

• Oscillator Frequency: 300KHz (±20%)

• High Efficiency: 91% (Typ.)

• Stand-by Current: I

• Built-in internal N-Channel MOS

• Lead Free Package: SOP-8L

• SOP-8L: Available in “Green” Molding Compound

(No Br, Sb)

• Lead Free Finish/ RoHS Compliant (Note 1)

1 = µA (Typ.)

STB

Applications

• Electronic Information Organizers

• Palmtops

• Cellular and Portable Phones

• Portable Audio Systems

• Various Multi-Function Power Supplies

General Description

The AP1609 is a high efficient step-up DC/DC converter. Large output current is possible having a built in internal N channel MOSFET, and using an external coil and diode.

Output voltage is programmable with 1.23V of standard voltage supply internal, and using externally connected components, output voltage (FB) can be set up at will.

With a 300KHz switching frequency, the size of the external components can be reduced. Control switches from PFM to PWM during light loads with the AP1609 (PWM/PFM switchable) and the series are highly efficient from light loads to large output currents.

During stand-by time (CE pin “Low”), current consumption is reduced to 1µA.

Ordering Information

AP 1609 S X - 13

Package PackingLead Free

S : SOP-8L

L : Lead Free

G : Green

Device

AP1609SL-13 S SOP-8L 2500/Tape & Reel -13

Lead-free

Package

Code

Packaging

(Note 2)

AP1609SG-13 S SOP-8L 2500/Tape & Reel -13

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

.

AP1609 Rev. 2 1 of 9 FEBRUARY 2009

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13 : Tape & Reel

13” Tape and Reel

Quantity Part Number Suffix

Pin Assignments

( Top View )

AP1609

PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER

CE

Vcc

FB

PGND

1

2

3

4

SOP-8L

8

GND

7

LX

6

5

LX

Pin Descriptions

Pin Name Pin Number Description

Chip Enable:

CE 1

Vcc 2 IC signal power supply pin

FB 3 Feedback pin

PGND 4 Power MOSFET GND

LX 5, 6

GND 7, 8 GND Pin

AP1609 Rev. 2 2 of 9 FEBRUARY 2009

H: Enable L: Disable

Switch Pin. Connect external inductor/diode here. Minimize trace area at this pin to reduce EMI.

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Block Diagram

AP1609

PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER

Vcc

FB

Phase

Compensation

+

-

CE

Vref with

CE

PWM/PFM

Controller

PWM

Comparator

Ramp Wave

Generator,

OSC

Buffer,

Driver

GND

PGND

Absolute Maximum Ratings

Symbol Parameter Ratings Units

VCC V

VFB FB Pin Voltage -0.3 ~ V VCE CE Pin Voltage -0.3 ~ V VSW Switch Voltage (LX to GND) -0.3 ~ 18 V

ILX Switch Current -3 ~ 0.2 A

P

Continuous Total Power Dissipation 1200 mW

D

T

Operating Ambient Temperature -20 ~ +80

OPR

T

Storage Temperature -20 ~ +125

STG

Pin Voltage -0.3 ~ 7 V

IN

+0.3 V

CC

+0.3 V

CC

LX

o

C

o

C

AP1609 Rev. 2 3 of 9 FEBRUARY 2009

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AP1609

PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER

Electrical Characteristics

AP1609 ( F

Symbol Parameter Conditions Min Typ. Max Units

VFB FB Voltage 1.20 1.23 1.26 V

VCC Input Voltage 2.5 - 6 V

V

Output Voltage 3.0 - 17 V

OUT

Maximum Switching Output Current Drain-Source On-State Resistance

Quiescent Current No Load, FB = 2V, CE = High - 80 130 μA

R

I

OUT

DS (ON)

I

CCQ

ISD Shutdown Current No Load, CE = Low - 1 - μA

Fosc Oscillator Frequency

MAXDTY Maximum Duty Ratio 80 - - %

PFMDTY PFM Duty Ratio No Load 15 25 35 %

V

CE “High” Voltage

CEH

V

CE “Low” Voltage Same as V

CEL

EFFI Efficiency - 91 - %

AP1609 Rev. 2 4 of 9 FEBRUARY 2009

OSC =

300kHz, V

= 5V ) TA = 25 oC

OUT

2.4 - - A

ID = 2.4A - 100 - mΩ

Measuring of EXT Waveform, V

= Output Voltage +0.3V

IN

240 300 360 kHz

No External Components, V

= 0V,

FB

Apply 0.65V

(min.) to CE,

CC

0.65 - - *V

Chip Enable

, Chip Disable - - 0.20 *VCC

CEH

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CC

Typical Application Circuit

(1) Normal Circuit

2.5V~6V

100

330K

100u

3.3u0.1u

0.1u

V

out

AP1609

PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER

CC

CE

GND

= 1.23

10uH

PGND

R

×

(1+ )

R

LX V

FB

1

, R

2

SS340

= 10K~100K

2

R

1

2

C

BP

Option

Vout

0.1u 100u

(2) HV Circuit

above 5.5V

470u

0.1u

ZD 5V

10uH

SS340

15V

R

1

C

BP

Option

330K

CE

CC

LX V

FB

0.1u 470u

3.3u

0.1u

V

out

GND

= 1.23

PGND

R

1

×

(1+ )

R

2

= 10K~100K

, R

2

R

2

AP1609 Rev. 2 5 of 9 FEBRUARY 2009

www.diodes.com © Diodes Incorporated

)

g

(

)

y

PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER

Typical Performance Characteristics

210

180

150

120

90

60

30

Supply Current (uA

0

0.8

0.6

%

0.4

0.2

ulation

-0.2

-0.4

-0.6

Line Re

-0.8

-1

Vc c v s . Su pp ly Curr e n t

V

=Vcc

CE

33.544.555.56

Vcc ( V

1

0

33.544.555.56

Line Regulation

Load = 50mA

Vcc (V)

400

350

300

250

200

150

Frequency (KHz)

100

3 3.5 4 4.5 5 5.5 6

2

1.5

1

0.5

0

-0.5

-1

Load Regulation (%)

-1.5

-2 0 200 400 600 800 1000

AP1609

Vcc vs. Frequency

Load = 300mA

Vcc (V)

Load Regulation

Vcc = 5V

Load (mA)

100

Load vs. Efficienc

95

90

85

80

75

70

Efficiency

65

60

0 0.2 0.4 0.6 0.8 1 1.2 1.4

Vcc = 3.3V,Vout = 5V

Load (A)

100

95

90

85

80

75

Efficiency

70

65

60

0 0.2 0.4 0.6 0.8 1 1.2 1.4

Load vs. Efficienc

Vcc = 5V,Vout = 12V

Load (A)

AP1609 Rev. 2 6 of 9 FEBRUARY 2009

PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER

Typical Performance Characteristics (Continued)

Temperature vs. Freque ncy

400

350

300

250

200

150

Frequency (KHz)

100

-50 -25 0 25 50 75 100

Temperature (oC)

Load = 300mA Vcc = 5V

Temperature vs. V out

5 4 3 2 1 0

-1

-2

Vout / Vout (%)

-3

-4

-5

-50 -25 0 25 50 75 100

Vcc = 5V Load = 100mA

Temperature (oC)

Temperature vs. Supply Current

200 180 160 140 120 100

80 60 40

Supply Current (uA)

20

0

-50 -25 0 25 50 75 100

AP1609

Vcc = 5V

Temperature (oC)

AP1609 Rev. 2 7 of 9 FEBRUARY 2009

Marking Information

(1) SOP-8L

AP1609

PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER

( Top View )

8

5

Logo

Part Number

AP1609

WW X

YY

X

41

Package Information (All Dimensions in mm)

(1) Package Type: SOP-8L

0.254

0.62/0.82

7°~9°

Gauge Plane

Seating Plane

Detail "A"

0°/8°

7°~9°

1.27typ

4.85/4.95

0.3/0.5

3.85/3.95

1.30/1.50

5.90/6.10

1.75max.

0.10/0.20

0.15/0.25

Detail "A"

0.35max. 45°

L : Lead Free

G : Green

: Year : 08, 09,10~

YY

WW : Week : 01~52; 52 represents 52 and 53 week

X

: Internal Code

8x-0.60

5.4

6x-1.27

8x-1.55

Land Pattern Recommendation

(Unit: mm)

AP1609 Rev. 2 8 of 9 FEBRUARY 2009

AP1609

PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER

IMPORTANT NOTICE

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products 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 our website, harmless against all damages.

LIFE SUPPORT

Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated.

AP1609 Rev. 2 9 of 9 FEBRUARY 2009