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AP3417C Datasheet

1.5MHZ SYNCHRONOUS STEP-DOWN DC-DC CONVERTER

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AP3417C pdf
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


Diodes Semiconductor Electronic Components Datasheet

AP3417C Datasheet

1.5MHZ SYNCHRONOUS STEP-DOWN DC-DC CONVERTER

No Preview Available !

AP3417C pdf
Typical Applications Circuit (cont.)
A Product Line of
Diodes Incorporated
AP3417C
VOUT (V)
3.3
2.5
1.8
1.2
1.0
For Fixed Versions
Component Guide
R1 (k)
R2 (k)
450 100
320 100
200 100
100 100
66 100
L (µH)
2.2
2.2
2.2
2.2
2.2
Pin Descriptions
Pin Number
SOT-23-5
DFN-2×2-6
12
25
34
43
56
1
Pin Name
EN
GND
LX
VIN
FB
NC
Chip enable pin. Active high
Ground pin
Switch output pin
Power supply
Feedback voltage of output
No internal connection
Function
AP3417C
Document number: DS36516 Rev. 1 - 0
2 of 11
www.diodes.com
September 2013
© Diodes Incorporated


Part Number AP3417C
Description 1.5MHZ SYNCHRONOUS STEP-DOWN DC-DC CONVERTER
Maker Diodes
Total Page 11 Pages
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AP3417C pdf
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