STPS0520Z
Stmicroelectronics
A 20V single Schottky rectifier (STMicroelectronics STPS0520Z) with a forward voltage drop of 320mV is selected for this design.
Design DocumentAnalog
MAXREFDES1018: 1V to 3.3V Input, 13.5V Output Boost Converter Design using MAX1606
Boost converter design using MAX1606 to provide 13.5V/6mA from a 1V-3.3V input, featuring selectable current limits and true shutdown in a compact µMAX package.
Overview
The MAXREFDES1018 design document describes a single-output boost DC-DC converter utilizing the MAX1606. The circuit is optimized for low-voltage operation, converting a 1V to 3.3V input range to a regulated 13.5V output at up to 6mA. The MAX1606 features an integrated 0.5A power switch and an output isolation switch that provides true shutdown by disconnecting the load from the input. The design incorporates selectable inductor current limits (125mA, 250mA, or 500mA) to optimize component size and ripple. Detailed design procedures are provided for component selection, including a 15µH Wurth Elektronik inductor and an STMicroelectronics STPS0520Z Schottky diode, with specific focus on performance trade-offs at minimum input voltages.
Use Cases
- Small LCD panels with low current requirements
- Single-cell battery-powered devices
- Portable electronics
- Battery-operated boost applications
Topics
MAX1606
MAXREFDES1018
boost converter
step-up DC-DC
low input voltage
µMAX package
STPS0520Z
7447779115
true shutdown
current-mode control
Referenced Parts
MAX1606
Maxim Integrated
The MAX1606 is a step-up DC-DC converter that contains a 0.5A internal power switch and a 0.5A output isolation switch in an 8-pin μMAX® package.
7447779115
Wurth Elektronik
The inductor selected for this design is Würth Elektronik’s’ 7447779115. It has an inductance value of 15μH with an ISAT of 2.2A.
| STPS0520Z | Stmicroelectronics | A 20V single Schottky rectifier (STMicroelectronics STPS0520Z) with a forward voltage drop of 320mV is selected for this design. |
| STPS0520Z | Stmicroelectronics | rectifier (STMicroelectronics STPS0520Z) with a forward |
| MAX1606 | Maxim Integrated | The MAX1606 is a step-up DC-DC converter that contains a 0.5A internal power switch and a 0.5A output isolation switch in an 8-pin μMAX® package. |
| 7447779115 | Wurth Elektronik | The inductor selected for this design is Würth Elektronik’s’ 7447779115. It has an inductance value of 15μH with an ISAT of 2.2A. |