RT9193-33GB
Manufacturer
Model
RT9193-33GB
Category
The RT9193-33GB is a cost-effective 3.3V LDO regulator optimized for space-constrained applications requiring stable low-dropout voltage regulation. Its 300mA output, 70dB PSRR, and compact SOT-23-5 packaging make it suitable for consumer electronics and embedded systems. Designers should ensure proper thermal management and verify transient load stability. The device offers competitive pricing and ESD protection but lacks adjustable voltage and advanced protection features.
Reference Pricing
Reference Stock
Specifications
| Dropout Voltage | 90mV (100mA load), 230mV (200mA load) |
| Load Regulation | 0.05% |
| Operating Temperature Range | -25~+85°C |
| Output Current | 300mA |
| Output Noise | 50uVrms |
| Output Voltage Accuracy | +/-1.2% |
| Output Voltage Regulation | 50mV |
| PSRR | 70dB |
| Package Type | SOT-23-5 |
| Rated Voltage | 6V |
| Transient Response Time | Not specified |
Function And Role
Core Function
Provide a stable 3.3V output with low dropout characteristic for power supply applications
Key Characteristics
- 300mA output current capability
- 70dB power supply rejection ratio (PSRR) at 1kHz
- Fixed 3.3V output voltage
- SOT-23-5 surface mount package
- Positive electrode configuration
- Operating temperature range -25°C to +85°C
Application Domains
Basic Scenarios
- Consumer electronics (IoT devices, smartphones, wearables)
- Low-power embedded systems
- DC-DC conversion in battery-powered devices
Extended Scenarios
- Industrial control systems
- Medical devices requiring stable power
- Automotive electronic control units
- Communication equipment power modules
Precautions
| Soldering | Use fine pitch soldering tools and avoid thermal overload (max 300°C reflow) |
| Current Limit | Max continuous output current 300mA (200mA peak) |
| Voltage Limit | Input voltage range 4.5V to 6V (absolute max 6.5V) |
| Thermal Management | Thermal resistance 50°C/W; recommend heatsink for >500mA continuous operation |
| Storage | Store in <10% relative humidity, -40°C to +85°C environment |
| Risk Warnings |
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Alternative Model Params
- Output current (200-500mA range)
- Input voltage range (4.5-12V)
- PSRR (60-80dB range)
- Package type (SOT-23-5/SOT-23-6)
- Dropout voltage (0.3-1.2V range)
Design Recommendations
| Layout | Maintain 10mm trace length between input/output pins |
| Thermal | Use 0603 size decoupling capacitors (10nF on input/output) |
| Compatibility | Pair with 6V input voltage sources |
| Testing | Verify output stability under 0.5A transient load |
Market Positioning
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| Weaknesses |
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