A Product Line of
1.5A, 1.4MHZ HIGH EFFICIENCY SYNCHRONOUS DC-DC BUCK CONVERTER
The AP3418 is a 1.4MHz fixed frequency, current mode, PWM
synchronous buck (step-down) DC-DC converter, capable of driving a
1.5A load with high efficiency, excellent line and load regulation. The
device integrates synchronous P-channel and N-channel power
MOSFET switches with low on-resistance. It is ideal for powering
portable equipment that runs from a single Li-ion battery.
A standard series of inductors are available from several different
manufacturers optimized for use with the AP3418. This feature greatly
simplifies the design of switch-mode power supplies.
The AP3418 is available in SOT25 package.
Input Voltage Range: 2.5V to 5.5V
Output Voltage: 0.6V to VIN
Fixed 1.4MHz Frequency
High Efficiency up to 95%
Output Current: 1.5A
Current Mode Control
100% Duty Cycle in Dropout
Built-in Over Current Protection
Built-in Short Circuit Protection
Built-in Thermal Shutdown Protection
Built-in UVLO Function
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
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"
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.
Typical Applications Circuit
VIN EN FB
Document number: DS37233 Rev. 3 - 2
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