ST1S03PUR vs RT8077GQW Comparison
Detailed side-by-side comparison of ST1S03PUR by STMicroelectronics and RT8077GQW by Richtek. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Specification Comparison
| Parameter | ST1S03PUR | RT8077GQW |
|---|---|---|
| Brand | STMicroelectronics | Richtek |
| Category | DC-DC Converters | DC-DC Converters |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.78 | $0.36 |
| Topology | Step-down (buck) DC-DC converter | Synchronous Buck (Step-Down) |
| Control Scheme | Current-mode PWM | — |
| Switching Frequency | 1.5 MHz (typical) | Up to 2 MHz (programmable, resistor-set) |
| Input Voltage Range | 3 V to 16 V | 2.6 V to 5.5 V |
| Output Voltage Range | 0.8 V to VIN (adjustable) | 0.8 V to 5 V (adjustable) |
| Maximum Output Current | 1.5 A | — |
| DC Output Voltage Tolerance | 2 % | — |
| Internal Soft-Start | 50 us to 100 us power-on delay | — |
| Typical Efficiency | > 70 % | — |
| Quiescent Current (not switching) | [DATA_NEEDED: quiescent current value] | — |
| Operating Temperature Range | -40 C to +125 C | — |
| Package | DFN-6 (3x3 mm) with exposed pad | 8-WDFN Exposed Pad (WDFN-8 2x2 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| MSL Level | [DATA_NEEDED: MSL rating] | 1 |
| RoHS Status | Compliant | Compliant |
| Output Current | — | 2 A continuous |
| Maximum Duty Cycle | — | 100% (low-dropout operation) |
| Control Architecture | — | Peak current-mode with internal compensation |
| Internal Switches | — | Synchronous low-Rdson MOSFETs (no Schottky required) |
| Soft-Start | — | Internal |
| Current Limit | — | Cycle-by-cycle |
| Thermal Protection | — | Thermal shutdown |
| Operating Temperature | — | -40 °C to +85 °C (TA) |