STEVAL-ISA083V1：4 A peak 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40IPUR
The STEVAL-ISA083V1, based on the ST1S40IPUR, is an internally compensated 800 kHz fixed-frequency PWM synchronous step-down converter demonstration board.
The ST1S40 operates from 4.0 V to 18.0 V input, while it regulates an output voltage as low as 0.8 V and up to VIN(100% duty cycle).
The ST1S40 integrates a 95 mΩ high-side switch and a 69 mΩ synchronous rectifier allowing very high efficiency with very low output voltage.
The peak current mode control with internal compensation delivers a very compact solution with a minimum component count.
The ST1S40 is protected through cycle-by-cycle current limiting in case of overload and is also protected by a current foldback function with frequency reduction in case of short-circuit.
The device is available with an enable on/off function.
Key Features
- Input voltage Vin : 4 V to 18 V
- Output voltage Vout : 3.3 V
- Maximum output current: 4 A
- Switching frequency: 800 kHz
- Short-circuit protected
- RoHS compliant
Product Specifications
| Description | Version | Size |
|---|---|---|
| DB1449: 4 A peak 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40IPUR | 1.1 | 109 KB |
Board Manufacturing Specifications
| Description | Version | Size |
|---|---|---|
| STEVAL-ISA083V1 gerber files | 2.1 | 106 KB |
Bill of Materials
| Description | Version | Size |
|---|---|---|
| STEVAL-ISA083V1 BOM | 1.0 | 70 KB |
Schematic Packs
| Description | Version | Size |
|---|---|---|
| STEVAL-ISA083V1 schematics | 1.0 | 37 KB |
License Agreement
| Description | Version | Size |
|---|---|---|
| Evaluation products license agreement | 1.0 | 125 KB |
Sample & Buy
| Part Number | Core Product | Unit Price (US$) * | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
|---|---|---|---|---|---|---|
| STEVAL-ISA083V1 | ST1S40IPUR | 51 | 1 | NEC | EAR99 | ITALY |
Quality & Reliability
| Part Number | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|
| STEVAL-ISA083V1 | CARD | Industrial | Ecopack2 |
- 4 A peak 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40IPUR STEVAL-ISA083V1
- 4 A peak 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40IPUR STEVAL-ISA083V1
- 4 A peak 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40IPUR STEVAL-ISA083V1
- 4 A peak 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40IPUR STEVAL-ISA083V1
- ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 ST-LINK-V2
