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PDF AP3417C Data sheet ( Hoja de datos )
| Número de pieza | AP3417C | |
| Descripción | 1.5MHZ SYNCHRONOUS STEP-DOWN DC-DC CONVERTER | |
| Fabricantes | Diodes | |
| Logotipo |  |
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A Product Line of
Diodes Incorporated
AP3417C
1.5MHZ SYNCHRONOUS STEP-DOWN DC-DC CONVERTER
Description
The AP3417C is a high efficiency step-down DC-DC voltage
converter. The chip operation is optimized by peak-current mode
architecture with built-in synchronous power MOSFET switchers. The
oscillator and timing capacitors are all built-in providing an internal
switching frequency of 1.5MHz that allows the use of small surface
mount inductors and capacitors for portable product implementations.
Integrated Soft Start (SS), Under Voltage Lock Out (UVLO), Thermal
Shutdown Detection (TSD) and Short Circuit Protection are designed
to provide reliable product applications.
The device is available in adjustable output voltage version ranging
from 0.6V to 0.9×VIN when input voltage range is from 2.5V to 5.5V,
and is able to deliver up to 1A. It is also available in fixed voltage
versions of 1.2V, 1.8V and 3.3V without external feedback resistance.
The AP3417C is available in SOT-23-5 and DFN-2×2-6 packages.
Features
High Efficiency Buck Power Converter
Wide Input Voltage Range: 2.5V to 5.5V
Adjustable Output Voltage: 0.6V to 0.9×VIN
Low RDS(ON) Internal Switches:200m (VIN = 5V)
Built-in Power Switches for Synchronous Rectification with High
Efficiency
Output Current: 1.0A
Feedback Voltage: 600mV
1.5MHz Constant Frequency Operation
Thermal Shutdown Protection
Low Dropout Operation at 100% Duty Cycle
No Schottky Diode Required
Input Over Voltage Protection
Output Over Voltage Protection
Over Current Protection
Pin Assignments
K Package
(SOT-23-5)
EN 1
GND 2
LX 3
5 FB
4 VIN
Applications
Post DC-DC Voltage Regulation
PDA and Notebook Computer
DN Package
(DFN-2×2-6)
Typical Applications Circuit
AP3417C
Document number: DS36516 Rev. 1 - 0
For ADJ Version
1 of 11
www.diodes.com
September 2013
© Diodes Incorporated
1 page  
A Product Line of
Diodes Incorporated
AP3417C
Performance Characteristics (@VIN = 5V, TA = +25°C, unless otherwise specified.)
100
95
90
85
80
75
70
65
60
55
50
45
40
0.0
Efficiency vs. Output Current
VIN=5.0V
VOUT=1.0V
VOUT=1.2V
VOUT=1.8V
VOUT=2.5V
VOUT=3.3V
0.2 0.4 0.6 0.8 1.0 1.2
Output Current (A)
Regulated Feedback Voltage vs. Temperature
0.70
0.68
0.66
0.64
0.62
0.60
0.58
0.56
0.54
0.52
0.50
-40
-20
0
VIN=5.0V
20 40 60 80
Temperature (oC)
100 120
140
VOUT_AC
10mV/div
VSW
2V/div
IL
500mA/div
Output Ripple (IOUT=0A)
Time 800µs/div
VOUT_AC
10mV/div
VSW
2V/div
IL
1A/div
Output Ripple (IOUT=1A)
Time 400ns/div
VEN
5V/div
VSW
5V/div
VOUT
1V/div
IL
500mA/div
Enable Turn On (IOUT=1A)
Time 200µs/div
AP3417C
Document number: DS36516 Rev. 1 - 0
VEN
5V/div
VSW
5V/div
VOUT
1V/div
IL
500mA/div
Enable Turn Off (IOUT=1A)
5 of 11
www.diodes.com
Time 800µs /div
September 2013
© Diodes Incorporated
5 Page 
A Product Line of
Diodes Incorporated
AP3417C
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 © 2013, Diodes Incorporated
www.diodes.com
AP3417C
Document number: DS36516 Rev. 1 - 0
11 of 11
www.diodes.com
September 2013
© Diodes Incorporated
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AP3417C.PDF ] | |
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