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