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PDF AP3401 Data sheet ( Hoja de datos )

Número de pieza AP3401
Descripción 1A STEP-DOWN DC - DC BUCK CONVERTER
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No Preview Available ! AP3401 Hoja de datos, Descripción, Manual

AP3401
1.5MHZ, 1A STEP-DOWN DC - DC BUCK CONVERTER
Description
The AP3401 is a 1A step-down DC-DC converter. At heavy load, the
constant-frequency PWM control performs excellent stability and
transient response. No external compensation components are
required.
Pin Assignments
(Top View)
Pin 1 Mark
The AP3401 supports a range of input voltages from 2.5V to 5.5V,
allowing the use of a single Li+/Li-polymer cell, multiple Alkaline/NiMH
cell, and other standard power sources. The output voltage is
adjustable from 0.6V to the input voltage. The AP3401 employs
internal power switch and synchronous rectifier to minimize external
part count and realize high efficiency. During shutdown, the input is
disconnected from the output and the shutdown current is less than
1μA. Other key features include over-temperature and short circuit
protection, and under-voltage lockout to prevent deep battery
discharge.
The AP3401 delivers 1A maximum output current while consuming
only 40μA of no-load quiescent current. Ultra-low RDS(ON) integrated
MOSFETs and 100% duty cycle operation make the AP3401 an ideal
choice for high output voltage, high current applications which require
a low dropout threshold. Pulse skip mode allows to maintain high
efficiency at light-load conditions.
The AP3401 is available in TSOT26, U-DFN2020-6 (Type J)
packages.
Features
Output Current: Up to 1A
Output Voltage: 0.6V to VIN
Input Voltage: 2.5V to 5.5V
0.6V Reference Voltage With ±2% Precision
40µA (Typ) No Load Quiescent Current
Shutdown Current: <1µA
100% Duty Cycle Operation
1.5MHz Switching Frequency
Internal Soft Start
No External Compensation Required
Current Limit Protection
Thermal Shutdown
TSOT26, U-DFN2020-6 (Type J) Packages
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
EN 1
GND 2
LX 3
6 FB
5 PG
4 VIN
TSOT26
(Top View)
P in 1 Mark
EN 1
6 FB
PG 2
5 GND
VIN 3
4 LX
U-DFN2020-6 (Type J)
Applications
Post DC-DC Voltage Regulation
Set Top Boxes
Notebook Computer
PAD
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.
AP3401
Document number: DS37389 Rev. 2 - 2
1 of 11
www.diodes.com
June 2016
© Diodes Incorporated

1 page




AP3401 pdf
AP3401
Performance Characteristics (@TA = +25°C, VIN = 5V, VOUT = 1.8V, unless otherwise specified.)
Efficiency vs. Load Current
100
90
80
70
60
50
40
30
V =5V, V =1.0V
20 IN OUT
V =5V, V =1.8V
IN OUT
10 V =5V, V =3.3V
IN OUT
0
10 100 1000
Output Current(mA)
PFET Drain-Source On-State Resistance vs. Temperature
260
240
220
200
180
160
140
120
100
-60 -40 -20 0 20 40 60 80 100 120 140
Temperature（oC）
Quiescent Current vs. Temperature
100
90
80
70
60
50
40
30
20
10
0
-60 -40 -20
0 20 40 60 80
Temperatrue（oC）
100 120 140
Feedback Reference Voltage vs. Temperature
0.630
0.625
0.620
0.615
0.610
0.605
0.600
0.595
0.590
0.585
0.580
0.575
0.570
-60 -40 -20
0 20 40 60 80
Temperature（oC）
100 120 140
NFET Drain-Source On-State Resistance vs. Temperature
240
220
200
180
160
140
120
100
80
-60 -40 -20
0 20 40 60 80
Temperatrue（oC）
100 120 140
Oscillation Frequency vs. Temperature
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
-60 -40 -20
0 20 40 60 80
Temperature（oC）
100 120 140
AP3401
Document number: DS37389 Rev. 2 - 2
5 of 11
www.diodes.com
June 2016
© Diodes Incorporated

5 Page





AP3401 arduino
AP3401
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 © 2016, Diodes Incorporated
www.diodes.com
AP3401
Document number: DS37389 Rev. 2 - 2
11 of 11
www.diodes.com
June 2016
© Diodes Incorporated

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