RP114N331D-TR-FE - 300mA 3.3V LDO Regulator SOT-23-5 | Nisshinbo
Référence : RP114N331D-TR ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $0.62 | $0,62 |
| 10 | $0.55 | $5,50 |
| 100 | $0.41 | $41,00 |
| 500 | $0.32 | $160,00 |
| 1 000 | $0.26 | $260,00 |
RP114N331D-TR Présentation
An LDO (Low-Dropout) linear regulator is a member of the linear regulator family inside the broader voltage-regulator / power-management-IC hierarchy. Unlike a switching regulator, an LDO controls the series-pass element in its linear region and dissipates VIN-VOUT x IOUT as heat; its main advantage is the absence of switching noise and a much smaller external parts count, which makes it a standard building block for clean analog and RF rails, microcontroller core supplies, and post-filtering after a buck converter.
Key features of the RP114N331D-TR-FE include a fixed 3.3 V output with +/-1% typical accuracy, low dropout voltage at 300 mA load, integrated current-limit and thermal-shutdown protection, and a ceramic-output-capacitor compatible architecture that eliminates the need for bulky tantalum or electrolytic capacitors. The SOT-23-5 footprint is one of the smallest standard JEDEC surface-mount packages, enabling high-density PCB designs while keeping the regulator's thermal path short.
Internally, the RP114N uses a CMOS pass transistor with a precision bandgap reference and an error amplifier that drives the gate of the pass FET, achieving low ground current even at full load. The control loop is stable with low-ESR ceramic output capacitors, which simplifies BOM selection and reduces PCB area.
Typical applications include single-cell Li-ion powered portable electronics, IoT sensor nodes, wireless modules, MCU core supply rails, and post-regulation for DC-DC converters in noise-sensitive analog front-ends. The 3.3 V fixed output makes it a direct fit for low-power MCUs, BLE radios, and sensor ICs.
When designing with the RP114N331D-TR-FE, place input and output capacitors as close to the IC pins as possible and verify that the worst-case VIN-VOUT dropout at the chosen load current is within the device's dropout rating. The exposed thermal pad of the SOT-23-5 package must be tied to a copper pour to keep junction temperature within ratings.
This page consolidates distributor pricing, drop-in alternative cross-references, and practical design notes for the RP114N331D-TR-FE that go beyond the manufacturer datasheet, helping engineers evaluate this part for new designs and as a replacement option in existing layouts.
Alternatives de remplacement direct pour RP114N331D-TR — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
RP114N331B-TR-FE
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
RP114N301D-TR-FE
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
RP114N181D-TR-FE
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
S-1312A34H-M5T1U3
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ADP1710AUJZ-3.3
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
RT9013-32GB
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
RP114N331D-TR Valeurs maximales et caractéristiques électriques
| Manufacturer | Nisshinbo Micro Devices (formerly Ricoh Electronics) |
| Part Number | RP114N331D-TR-FE |
| Regulator Type | Low Dropout (LDO) Linear Regulator |
| Topologie | Positive Fixed Output |
| Tension de sortie | 3.3 V (fixed) |
| Output Current (Maximum) | 300 mA |
| Nombre de sorties | 1 |
| Input Voltage (Maximum) | 5.5 V |
| Quiescent Current (Typ) | 50 uA |
| Output Accuracy | +/-1 % (typical) |
| Température de fonctionnement | -40 C to +85 C |
| Boîtier | SOT-23-5 |
| Type de montage | Surface Mount |
| Niveau MSL | 1 (per JEDEC J-STD-020) |
| Statut RoHS | Compliant |
| Sans halogène | Compliant |
| Lead Free | Yes |
| ECCN | EAR99 |
| Introduction Date | October 20, 2009 |
| Estimated EOL Date | 2025 |
| Output Capacitor | Low-ESR ceramic compatible |
Configuration des broches de RP114N331D-TR
| Broche 1 | VIN — Input voltage supply (up to 5.5 V) |
| Broche 2 | GND — Ground reference |
| Broche 3 | EN — Enable input (active-high) |
| Broche 4 | NC — No connect (per datasheet) |
| Broche 5 | VOUT — Regulated 3.3 V output |
Applications typiques
RP114N331D-TR convient pour 6 applications: Single-Cell Li-ion Powered IoT Sensor Node, MCU Core Supply Post-Regulator, Sensor Module Power Rail, Wireless Module Power Supply, Portable Consumer Electronics, Industrial Sensor and Control Module.
Single-Cell Li-ion Powered IoT Sensor Node
The RP114N331D-TR-FE is well suited as the primary 3.3 V rail in a single-cell Li-ion powered IoT sensor node, where the 50 uA typical quiescent current and SOT-23-5 footprint help maximize battery life and shrink PCB area. With a 300 mA output rating, the regulator can feed an MCU plus a low-power BLE radio or environmental sensor with comfortable headroom, while the fixed 3.3 V output eliminates the need for an external resistor divider. Compared with a switching regulator in this role, the RP114N introduces no switching noise into the analog sensor front-end, which is critical for accurate temperature, gas, or biometric measurements. Place a 1 uF X5R ceramic on VIN and a 1 uF X5R ceramic on VOUT, both within 5 mm of the package pins, to keep the control loop stable.
Recommandé
MCU Core Supply Post-Regulator
Use the RP114N331D-TR-FE as a post-regulator after a 3.3 V buck converter to power an MCU core, isolating noisy switcher ripple from the digital supply. The regulator's high ripple rejection at low frequencies cleans up any residual switching noise that would otherwise couple into the MCU's analog sections or ADC reference. With 300 mA of output capability, the part can comfortably drive a PIC32MX or STM32-class MCU plus supporting logic. The SOT-23-5 footprint fits easily under bypass caps on the PCB, and the +/-1 % output accuracy holds the MCU within its rated supply tolerance even at high line transients.
Recommandé
Sensor Module Power Rail
The RP114N331D-TR-FE delivers a clean 3.3 V rail for sensor modules such as accelerometers, gyroscopes, and pressure sensors, where supply-noise rejection directly translates into measurement accuracy. With a typical quiescent current of 50 uA and a low-dropout architecture, the regulator preserves battery life in always-on sensor applications. The fixed 3.3 V output matches the supply rating of most modern MEMS sensors, eliminating external resistor-dividers. A 1 uF ceramic input and 1 uF ceramic output capacitor provide the low-impedance path needed for fast transient response when the sensor enters measurement mode.
Recommandé
Wireless Module Power Supply
The RP114N331D-TR-FE provides a stable 3.3 V supply for low-power wireless modules including BLE, Zigbee, and sub-GHz transceivers, where stable supply voltage is essential for predictable RF performance. Its low quiescent current of 50 uA minimizes standby drain, while the 300 mA output rating covers peak transmit currents of most low-power radios. The high PSRR attenuates any noise from upstream DC-DC converters that could otherwise leak into the RF path and degrade sensitivity. The SOT-23-5 package occupies minimal board area, ideal for compact wireless modules.
Recommandé
Portable Consumer Electronics
The RP114N331D-TR-FE is well matched to portable consumer electronics such as wearables, health monitors, and remote controls, where small size and low quiescent current are critical. With its 50 uA quiescent current and 3.3 V fixed output, the regulator can hold up the system during sleep without draining the battery. The 300 mA output capability is sufficient for the MCU, display, and any BLE connectivity IC. The SOT-23-5 package enables high-density layouts common in wearable form factors, and the integrated thermal-shutdown protection guards against fault conditions during charging.
Recommandé
Industrial Sensor and Control Module
The RP114N331D-TR-FE serves as a reliable 3.3 V rail for industrial sensor and control modules operating from a 5 V supply rail, thanks to its 5.5 V maximum input voltage and -40 C to +85 C operating range. The 300 mA output rating handles MCU, communications IC, and analog sensor loads in a typical 4-20 mA loop bridge or industrial transducer module. The integrated current-limit and thermal-shutdown protections guard against field-fault transients, while the +/-1 % output accuracy ensures consistent sensor calibration across production units. The SOT-23-5 footprint simplifies retrofit designs that previously used larger DPAK or SOIC LDOs.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour RP114N331D-TR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | RP114N331B-TR-FE | RP114N301D-TR-FE | RP114N181D-TR-FE | S-1312A34H-M5T1U3 | ADP1710AUJZ-3.3 | RT9013-32GB |
|---|---|---|---|---|---|---|---|
| Brand | Nisshinbo Micro Devices | Nisshinbo Micro Devices | Nisshinbo Micro Devices | Nisshinbo Micro Devices | ABLIC | Analog Devices | Richtek |
| Package | SOT-23-5 | SOT-23-5 - same | SOT-23-5 - same | SOT-23-5 - same | SOT-23-5 - same | SOT-23-5 - same | SOT-23-5 - same |
| Maximum Output Current | 300 mA | 300 mA | 300 mA | 300 mA | 150 mA | 300 mA | 500 mA |
| Maximum Input Voltage | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Principaux différenciateurs
- Same SOT-23-5 footprint as ADP1710AUJZ-3.3 with lower quiescent current (vs ADP1710AUJZ-3.3)
- Higher output current rating than ABLIC S-1312A34H-M5T1U3 (vs S-1312A34H-M5T1U3)
- Higher output current capability than S-1312A34H-M5T1U3 in same footprint (vs S-1312A34H-M5T1U3)
- Richtek RT9013-32GB is a higher-current drop-in alternative (vs RT9013-32GB)
Notes de conception
Estimated: at VIN=5.0 V, VOUT=3.3 V and 300 mA load, the RP114N331D-TR-FE dissipates (5.0 - 3.3) x 0.3 = 0.51 W. The SOT-23-5 package has a typical theta_JA near 250 C/W on a 1 oz 4-layer 1-square-inch copper pour, giving a junction temperature rise of approximately 128 C above 25 C ambient. At 85 C ambient this would push the junction close to 213 C, well above the 150 C thermal-shutdown limit, so for high-VIN or high-load operation reduce VIN closer to VOUT or drop the load. Always use the largest practical copper pour under the package exposed pad to keep junction temperature in check.
Place a 1 uF X5R or X7R ceramic bypass capacitor on VIN and a 1 uF X5R ceramic capacitor on VOUT, both within 5 mm of the package pins, to keep the control loop stable and provide low impedance for load transients. The exposed thermal pad of the SOT-23-5 must be soldered to a copper pour that extends to a wider ground/power area for heat spreading. Keep digital switching traces (clocks, data lines) away from the analog VIN/VOUT traces to avoid coupling noise into the regulated output.
Do not exceed the absolute maximum input voltage of 5.5 V; even brief transients above this level can damage the internal pass transistor. Do not omit the output capacitor or use a capacitor outside the manufacturer ESR window, or the regulator may oscillate. If the load draws pulsed current above 300 mA, add bulk capacitance at VOUT to prevent the foldback current-limit from engaging. For the EN pin, drive it with a clean logic signal; a floating EN can result in indeterminate output state at power-up.
Route the input current path (VIN to CIN to GND) as a tight loop directly under or beside the package to minimize parasitic inductance that could ring at high dI/dt events. Route the load current return separately back to the regulator GND pin rather than sharing a noisy digital ground, to avoid ground bounce degrading load regulation. A four-layer PCB with a dedicated ground plane is recommended for best thermal and electrical performance.
Informations de conformité
Halogen free and RoHS compliant per GlobalSpec datasheet directory. ECCN EAR99. Not AEC-Q100 qualified - choose an automotive-grade LDO such as the TPS7A47xx-Q1 series for automotive applications.
