RP504K191D-E2
600MA PWM/VFM STEP-DOWN DCDC CON
Pmic Voltage Regulators Dc Dc Switching Regulators
SC-74A, SOT-753
RP504x
Active
$0.77 / unit (market reference)
MOQ: 390 pcs
Submit your quantity via the inquiry form for a competitive quote within 24 hours.
Parameters
| Parameter | Value |
|---|---|
| Brand | Nisshinbo Micro Devices Inc. |
| Model | RP504K191D-E2 |
| Package / Case | SC-74A, SOT-753 |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Topology | Buck |
| Voltage - Input (Min) | 2.3V |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output | 1.9V |
| Current - Output | 600mA |
| Frequency - Switching | 2.25MHz |
| Number of Outputs | 1 |
| Supplier Device Package | SOT-23-5 |
| RoHS | RoHS |
| Part Status | Active |
Application & Notes
RP504K191D-E2 by Nisshinbo Micro Devices Inc. is a Buck IC commonly used in power supply designs, battery-powered devices, and DC-DC conversion modules. Input voltage up to 5.5V, output 1.9V. The SC-74A, SOT-753 package with surface mount mounting is standard for compact designs. Pay attention to input/output capacitor selection and PCB layout — switching regulators are sensitive to trace inductance.
📖 Technical Guides for RP504K191D-E2
ESP32 vs STM32: Which MCU is Right for Your Project?
Components Guide
Chinese MCU Alternatives: GD32, AT32, APM32 & More — 40-80% Cost Savings vs ST/NXP/Microchip
Components Guide
Op-Amp Selection Guide: 8 Most Popular Types and When to Use Each
Components Guide
LM358 Alternatives & Replacements: Complete Pin-to-Pin Guide
Components Guide
Alternatives & Replacements
View All →AP3012KTR-G1
IC REG BOOST ADJ 500MA SOT23-5
FAN5307S18X
SWITCHING REGULATOR
AP3015KTR-G1
IC REG BOOST ADJ 300MA SOT23-5
FAN5307SX
SWITCHING REGULATOR
ILC6390CM-33
IC REG LIN SWITCHING VOLT MODE
TPS62202DBVR
IC REG BUCK 1.8V 300MA SOT23-5
All Technical Specifications
| Function | Step-Down |
| Topology | Buck |
| Output Type | Fixed |
| Current - Output | 600mA |
| Number of Outputs | 1 |
| Output Configuration | Positive |
| Frequency - Switching | 2.25MHz |
| Synchronous Rectifier | Yes |
| Voltage - Input (Max) | 5.5V |
| Voltage - Input (Min) | 2.3V |
| Voltage - Output (Min/Fixed) | 1.9V |
Request a Quote
Submit your quantity and details — we will reply within 24 hours.