STEVAL-ISA042V2：1.5 A / 3.3 V step-down DC-DC converter demonstration board based on the ST1S03
The STEVAL-ISA042V2 demonstration board is a step-down DC-DC converter optimized for powering the low-voltage digital core in HDD applications and, more generally, replacing the high-current linear solution when the power dissipation may cause excessive heating of the application environment. It provides up to 1.5 A over an input voltage range of 3 V to 16 V.
A high switching frequency (1.5 MHz) allows the use of tiny surface-mounted components, as well as the use of a resistor divider to set the output voltage value. Only an inductor, a Schottky diode, and two capacitors are required. In addition, a low output ripple is guaranteed by the current-mode PWM topology and by the use of low ESR SMD ceramic capacitors. The device is thermal protected and current limited to prevent damage due to accidental short-circuits.
It uses the ST1S03 device.
The ST1S03 is available in a DFN6 (3x3mm) package.
Key Features
- Adjustable current-mode PWM step-down DC-DC converter
- Output voltage, Vout
: 3.3 V
- Output current, Iout
: 1.5 A
- Internal compensation to eliminate additional components
- Pulse skipping for Iout
lower than 15 mA, to maintain the regulation with light loads
- RoHS compliant
Product Specifications
Presentations
Board Manufacturing Specifications
Bill of Materials
Schematic Packs
License Agreement
Sample & Buy
| Part Number | Core Product | Unit Price (US$)
* | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
|---|
| STEVAL-ISA042V2 | ST1S03PUR | 30.63 | 1 | NEC | EAR99 | ITALY |
Quality & Reliability
| Part Number | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|
| STEVAL-ISA042V2 | CARD | Industrial | Ecopack2 | |
