New Industry Products

Tiny 5.5V, 1A, Synchronous COT Buck Converter from Diodes Incorporated

September 06, 2020 by Hailey Stewart

Diodes Incorporated introduces Tiny 5.5V, 1A, Synchronous COT Buck Converters, the AP61100 and AP61102.

The AP61100/AP61102 is a 1A, synchronous buck converter with a wide input voltage range of 2.3V to 5.5V. The device fully integrates a 110mΩ high-side power MOSFET and an 80mΩ low-side power MOSFET to provide high-efficiency step-down DC-DC conversion.

 

 

The AP61100/AP61102 can be set to operate in either Pulse Width Modulation (PWM) regardless of load or Pulse Frequency Modulation (PFM) with up to 89% efficiency at 5mA light load.

The AP61100/AP61102 device is easily used by minimizing the external component count due to its adoption of Constant On-Time (COT) control to achieve fast transient response, easy loop stabilization, and low output voltage ripple.

The device is available in a SOT563 package.

 

The Diodes Advantage

The AP61100/AP61102 provides a high efficiency DC-DC solution for general POL applications.

  • High Efficiency @ Light Loads
    0.1µA Shutdown Current
    Low 15µA Quiescent Current in PFM Operation

  • High Design Flexibility
    Wide Input Range from 2.3V – 5.5V
    Wide Output Voltage range: 0.6V to 3.6V
    Multifunctional EN Pin to Control PFM and PWM Operation Modes
    Built-in PG with Internal Pull-Up Resistor (AP61102)

  • High Robustness
    Utilizes both High-side and Low-side Current Sense Protection

  • Ease of Layout Design
    2.2MHz Switching Frequency Allows the Use of Small Passive
    COT Control Minimizes External Component Count

 

Applications

  • 5V Distributed Power Bus Supplies
  • White Goods and Small Home Appliances
  • FPGA, DSP, and ASIC Supplies
  • Network Video Cameras
  • Wireless Routers
  • Consumer Electronics

 

Typical Application Circuit 
Typical Application Circuit 
Efficiency vs. Output Current
Efficiency vs. Output Current

 

5V DC-DC Buck Converter Portfolio

Part
Number
VIN
Range
(V)
VOUT
Range
(V)
Output
Current
(A)
RDS(ON)
(mΩ)
HS / LS
Mode
Prog.
Switching
Frequency
(MHz)
IQ
(µA)
Ambient
Temperature
(ºC)
PG Package
AP61100 2.3 – 5.5 0.6 – 3.6 1 110 / 80 Yes 2.2 15 -40 to +85  No SOT563
AP61102 2.3 – 5.5 0.6 – 3.6 1 110 / 80 Yes 2.2 15 -40 to +85 Yes SOT563

 

Ordering Information

Orderable
Device
Package
Code
Package Identification
Code
Reel
Size
Tape
Width
Quantity
AP61100Z6-7 Z6 SOT563 HJ 7 inches 8 millimeters 3000
AP61102Z6-7 Z6 SOT563 HK 7 inches 8 millimeters 3000

 

About Diodes Incorporated

Dialog brings decades of experience to the rapid development of ICs while providing flexible and dynamic support, world-class innovation and the assurance of dealing with an established business partner. We continue to lead through innovation and diversification as a socially responsible employer pursuing many programs to benefit the employees, community, stakeholders and the environment we operate in.