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PDF AP3409 Data sheet ( Hoja de datos )
| Número de pieza | AP3409 | |
| Descripción | 4MHz HIGH EFFICIENCY SYNCHRONOUS BUCK CONVERTER | |
| Fabricantes | Diodes Incorporated | |
| Logotipo |  |
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A Product Line of
Diodes Incorporated
AP3409/A
3A, 4MHz HIGH EFFICIENCY SYNCHRONOUS BUCK CONVERTER
Description
Pin Assignments
The AP3409/A is a current mode, PWM synchronous buck DC/DC
converter, capable of driving a 3A load with high efficiency, excellent
line and load regulation. It operates in continuous PWM mode.
The AP3409/A integrates synchronous P-channel and N-channel
power MOSFET switches with low on-resistance. It is ideal for
portable applications powered from a single Li-ion battery. 100% duty
cycle and low on-resistance P-channel internal power MOSFET can
maximize the battery life.
The switching frequency of AP3409/A can be programmable from
300kHz to 4MHz, which allows small-sized components, such as
capacitors and inductors. A standard series of inductors from several
different manufacturers are available. This feature greatly simplifies
the design of switch-mode power supplies.
The AP3409/A is available in U-DFN3030-10 package.
Features
Input Voltage Range: 2.6V to 5.5V
Adjustable Output from 0.8V to 5V
0.8V Reference Voltage with ±2% Precision
Output Current: 3A
High Efficiency up to 95%
Low RDSON Internal Switches
Programmable Frequency: 300kHz to 4MHz
Current Mode Control
Forced Continuous-mode Operation
100% Duty Cycle
Built-in Soft-start
Built-in Short Circuit Protection
Built-in Thermal Shutdown Protection
Built-in Current Limit Function
PGOOD Output Voltage Monitoring (For AP3409A)
U-DFN3030-10 package
Totally Lead-free & Fully RoHS Compliant (Note 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
(Top View)
Pin 1 Mark
SHDN/RT 1
GND 2
SW 3
SW 4
PGND 5
Exposed Pad
Connected to
PGND
10 COMP
9 FB
8 VDD
7 PVDD
6 PVDD
U-DFN3030-10 (DN Package)
For AP3409
(Top View)
Pin 1 Mark
SHDN/RT 1
GND 2
SW 3
SW 4
PGND 5
Exposed Pad
Connected to
PGND
10 COMP
9 FB
8 PGOOD
7 VDD
6 PVDD
U-DFN3030-10 (DN Package)
For AP3409A
Applications
Portable Media Player
Digital Still and Video Cameras
Notebook
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/quality/lead_free.html 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.
AP3409/A
Document number: DS36789 Rev. 2 - 2
1 of 11
www.diodes.com
January 2014
© Diodes Incorporated
1 page  
Recommended Operating Conditions
Symbol
VIN
IOUT (MAX)
TJ
Input Voltage
Parameter
Maximum Output Current
Operating Junction Temperature
A Product Line of
Diodes Incorporated
AP3409/A
Min Max Unit
2.6 5.5 V
3 –A
-40
+125
ºC
Electrical Characteristics (VIN=VDD=VPVDD=3.3V, TA=+25oC, unless otherwise specified.)
Symbol
INPUT SECTION
VDD
IQ
ISHDN
VUVLO
VHUVLO
FEEDBACK SECTION
VFB
IFB
RT
–
GV
GS
OSCILLATOR SECTION
VRT
Parameter
Input Voltage Range
Supply Current
Shutdown Supply Current
Under Voltage Threshold Lockout
Under Voltage Hysteresis Lockout
Feedback Voltage
FB Pin Bias Current
Current Sense Trans-resistance
Switching Leakage Current
Error Gain Amplifier Voltage
Error Amplifier Trans-conductance
RT Pin Voltage
fOSC
Switching Frequency
DMAX
Maximum Duty Cycle
POWER SWITCH SECTION
ILIMIT
Switch Current Limit
RPDSON
RNDSON
SHDN/RT SECTION
–
Internal P-FET On Resistance
Internal N-FET On Resistance
Shutdown Threshold
PGOOD SECTION (Only for AP3409A)
– PGOOD Voltage Range
– PGOOD Pull Down Resistance
TOTAL DEVICE
IOUT Output Current
LNR
LOD
tSS
TOTSD
THYS
Output Voltage Line Regulation
Output Voltage Load Regulation
Soft-start Time
Thermal Shutdown Temperature
Thermal Shutdown Temperature
Hysteresis
Conditions
VFB=0.75V,
No Switching
Shutdown, VIN=5.5V
VDD Rising
–
–
–
–
VSHDN/RT=VIN=5.5V
–
–
–
ROSC
ADJ Frequency
VFB=0.75V
AP3409
AP3409A
VFB=0.75V
ISW=500mA
ISW=-500mA
–
–
–
VDD=2.6V to 5.5V,
VOUT=2.5V
VDD=2.7V to 5.5V,
IOUT=100mA
IOUT=0.01A to 3A
IOUT＝10mA
–
–
Min
2.6
–
–
–
–
0.784
–
–
–
–
–
0.76
0.8
0.3
100
3.2
3.5
–
–
–
–
–
3
–
–
–
–
–
Typ Max
– 5.5
460 –
–1
2.2 –
300 –
0.8 0.816
0.1 0.4
0.2 –
–1
800 –
800 –
0.8 0.84
1 1.2
–4
––
4.2
4.2
0.11
0.11
–
–
0.16
0.17
VDD-0.7 VDD-0.4
±12.5
–
±15
120
–
0.4
±0.2
1.5
+160
+20
–
–
–
–
–
–
Unit
V
µA
µA
V
mV
V
µA
µA
–
µA/V
V
MHz
MHz
%
A
A
Ω
Ω
V
%
Ω
A
%/V
%
ms
ºC
ºC
AP3409/A
Document number: DS36789 Rev. 2 - 2
5 of 11
www.diodes.com
January 2014
© Diodes Incorporated
5 Page 
A Product Line of
Diodes Incorporated
AP3409/A
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.
This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the
final and determinative format released by Diodes Incorporated.
LIFE SUPPORT
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.
Copyright © 2012, Diodes Incorporated
www.diodes.com
AP3409/A
Document number: DS36789 Rev. 2 - 2
11 of 11
www.diodes.com
January 2014
© Diodes Incorporated
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AP3409.PDF ] | |
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