Diodes AP3015-A User Manual

Data Sheet

MICRO POWER STEP-UP DC-DC CONVERTER AP3015/A

General Description

The AP3015/A are Pulse Frequency Modulation
(PFM) DC/DC converters. These two devices are func­tionally equivalent except the switching current limit.
The AP3015 is designed for higher power systems
with 350mA current limit, and the AP3015A is for
lower power systems with 100mA current limit.

The AP3015/A feature a wide input voltage. The oper­ation voltage is ranged from 1.2Vto 12V (1V to 12V
for AP3015A). A current limited, fixed off-time con­trol scheme conserves operating current, resulting in
high efficiency over a broad range of load current.
They also feature low quiescent current, switching cur­rent limiting, low temperature coefficient, etc.

Fewer tiny external components are required in the
applications to save space and lower cost.
Furthermore, to ease its use in differnet systems, a dis­able terminal is designed to turn on or turn off the chip.

The AP3015/A are available in SOT-23-5 package.

Features

· Low Quiescent Current

In Active Mode (Not Switching): 17
In Shutdown Mode: <1

· Low Operating V

µA

IN

1.2V Typical for AP3015

1.0V Typical for AP3015A

· Low V

CESAT

Switch

200mV Typical at 300mA for AP3015
70mV Typical at 70mA for AP3015A

· High Output Voltage: up to 34V

· Fixed Off-Time Control

· Switching Current Limiting

350mA Typical for AP3015
100mA Typical for AP3015A

· Operating Temperature Range: -40

o

Applications

· MP3, MP4

· Battery Power Supply System

· LCD/OLED Bias Supply

· Handheld Device

· Portable Communication Device

µA Typical

C to 85oC

SOT-23-5

Figure 1. Package Type of AP3015/A

May 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited

1

Data Sheet

MICRO POWER STEP-UP DC-DC CONVERTER AP3015/A

Pin Configuration

K Package

(SOT-23-5)

1

SW

GND

Figure 2. Pin Configuration of AP3015/A (Top View)

2

34

FB

5

V

IN

SHDN

Pin Description

Pin Number Pin Name Function

1 SW Switch Pin. This is the collector of the internal NPN power switch. Minimize the trace area

connected to this Pin to minimize EMI

2 GND Ground Pin. GND should be tied directly to ground plane for best performance

3 FB Feedback Pin. Set the output voltage through this pin. The formula is V

R2). Keep the loop between Vout and FB as short as possible to minimize the ripple and noise,
which is beneficial to the stability and output ripple

OUT

=1.23V*(1+R1/

4 SHDN

5V

IN

Shutdown Control Pin. Tie this pin above 0.9V to enable the device. Tie below 0.25V to turn
off the device

Supply Input Pin. Bypass this pin with a capacitor as close to the device as possible

May 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited

2

Data Sheet

MICRO POWER STEP-UP DC-DC CONVERTER AP3015/A

Functional Block Diagram

FEEDBACK

3

FB

COMPARATOR

ENABLE

1

SW

V

V

5

IN

REF

Bandgap

4

SHDN

Ordering Information

Circuit Type

Blank: AP3015
A: AP3015A

400nS

ONE SHOT

RESET

CURRENT-LIMIT

COMPARATOR

Figure 3. Functional Block Diagram of AP3015/A

AP3015

-

DRIVER

CURRENT-LIMIT

REFERENCE

E1: Lead Free
G1: Green

TR: Tape and Reel

Package
K: SOT-23-5

Q1

2

GND

Package

SOT-23-5

BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with
"G1" suffix are available in green package.

Temperature

Range

o

-40 to 85

C

AP3015KTR-E1 AP3015KTR-G1 E6E G6E Tape & Reel

AP3015AKTR-E1 AP3015AKTR-G1 E6F G6F Tape & Reel

Part Number Marking ID

Lead Free Green Lead Free Green

Packing Type

May 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited

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Data Sheet

MICRO POWER STEP-UP DC-DC CONVERTER AP3015/A

Absolute Maximum Ratings (Note 1)

Parameter Symbol Value Unit

Input Voltage V

SW Voltage V

FB Voltage V

SHDN

Pin Voltage V

Thermal Resistance (Junction to Ambient, no Heat sink) R

Operating Junction Temperature T

Storage Temperature Range T

Lead Temperature (Soldering, 10sec) T

IN

SW

FB

SHDN

θJA

J

STG

LEAD

15 V

38 V

V

IN

15 V

265

150

-65 to 150

260

o

C/W

V

o

C

o

C

o

C

ESD (Human Body Model) 3000 V

Note 1: Stresses greater than 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 under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Max­imum Ratings" for extended periods may affect device reliability.

Recommended Operating Conditions

Parameter Symbol Min Max Unit

Input Voltage

V

IN

Operating Temperature T

May 2010 Rev. 1. 4 BCD Semiconductor Manufacturing Limited

AP3105 1.2 12

AP3105A 1.0 12

A

-40 85

4

V

o

C