NJW4184U3-05B-TE1 - 5V 300mA High-Voltage LDO | Nisshinbo
Référence : NJW4184U3-05B-TE1 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $0.92 | $0,92 |
| 10 | $0.81 | $8,10 |
| 100 | $0.66 | $66,00 |
| 500 | $0.54 | $270,00 |
| 1 000 | $0.45 | $450,00 |
NJW4184U3-05B-TE1 Présentation
An LDO (Low-Dropout) linear regulator is a type of linear voltage regulator that maintains a stable output voltage even when the input voltage is only marginally above the output voltage. Within the broader power-management IC hierarchy, an LDO is a linear regulator, which itself is a sub-class of voltage regulators. Unlike a switching DC-DC converter, an LDO dissipates the VIN-VOUT difference linearly, providing much lower output noise and a smaller PCB area at the cost of efficiency. The NJW4184 specifically targets high-voltage, low-IQ applications where conventional LDOs would draw excessive quiescent current.
Key features include a 5.0 V fixed output (the -05B suffix denotes the 5 V version; the series covers 2.5 V to 15 V in different voltage grades), 100 to 200 mV dropout at 300 mA, an integrated current-limit and thermal-shutdown protection block, and a typical quiescent current of only 9 uA (rising to 22 uA at full load). The SOT-89-3 package offers an exposed copper tab for PCB thermal dissipation, providing approximately 2.4 W of allowable power dissipation when properly soldered to an appropriate copper land pattern.
The NJW4184 uses a PNP pass-transistor topology with a precision bandgap reference, which enables the ultra-low quiescent current while still providing relatively high PSRR for low-noise rails. The 35 V input tolerance supports industrial 24 V bus rails and 12 V automotive environments with substantial transient headroom, which is uncommon for general-purpose 6 V or 12 V LDOs.
Typical applications include industrial sensor power, IoT battery-powered nodes, HVAC controllers, 24 V industrial-bus regulation, and standby/auxiliary rails for metering equipment. In each case, the wide input range and 9 uA IQ allow the regulator to be tied directly to a 24 V rail without a pre-regulator. Designers should follow IMI Power Layout guidelines: connect a 0.1 uF ceramic input capacitor close to VIN, a 1 uF to 10 uF ceramic output capacitor close to VOUT, and maximize the copper area under the thermal tab to achieve the rated 2.4 W dissipation. This page synthesizes distributor pricing, drop-in voltage-grade alternatives, and practical thermal guidance not aggregated on competing distributor product pages.
Alternatives de remplacement direct pour NJW4184U3-05B-TE1 — 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 :
NJW4184U3-03B-TE1
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
NJW4184U3-12B-TE1
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
NJW4184U3-15B-TE1
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
NJW4184U3-05B-TE2
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
NJW4184U3-05B-TE1
✅ Remplacement direct✓ En stock
$0.45 / unité
Voir la fiche technique →NJW4184U3-06B-TE1
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
NJW4184U3-05B-TE1 Valeurs maximales et caractéristiques électriques
| Type de sortie | Fixed |
| Tension de sortie | 5.0 V |
| Plage de tension d'entrée | 4.0 V to 35 V |
| Absolute Maximum Input Voltage | -0.3 V to 40 V |
| Courant de sortie maximal | 300 mA |
| Tension de déchet | 100 mV to 200 mV at 300 mA |
| Courant de repos | 9 uA to 22 uA |
| Power Dissipation (mounted) | 2.4 W (with proper land pattern) |
| Boîtier | SOT-89-3 (U3) |
| Type de montage | Surface Mount |
| Protection Features | Current limit, Thermal shutdown |
| Statut RoHS | Compliant |
Configuration des broches de NJW4184U3-05B-TE1
| Broche 1 | VIN — Input voltage supply (4.0V to 35V) |
| Broche 2 | GND — Ground (center tab internally connected to GND) |
| Broche 3 | VOUT — Regulated 5.0V output, up to 300 mA |
Applications typiques
NJW4184U3-05B-TE1 convient pour 6 applications: 24V Industrial Sensor Power Rail, IoT Battery-Powered Sensor Node, Automotive 12V Accessory Rail, HVAC Thermostat and Building Automation, Smart Meter Standby and Auxiliary Rail, Portable Test and Measurement Instrument.
24V Industrial Sensor Power Rail
The NJW4184U3-05B-TE1 fits 24V industrial sensor rails because its 35V continuous input rating (40V absolute maximum) and 9 uA typical quiescent current let it connect directly to a 24V PLC backplane without a pre-regulator. The 300 mA output current is sufficient to power a microcontroller, ADC, and 4-20 mA loop driver from a single 5.0V rail, while the SOT-89-3 package provides 2.4 W of dissipation when soldered to a properly sized copper land pattern. The integrated current limit and thermal shutdown also protect against the inductive transients common on long sensor cables, eliminating the need for external protection circuits in most installations.
Recommandé
IoT Battery-Powered Sensor Node
The NJW4184U3-05B-TE1 is well matched to battery-powered IoT sensor nodes where quiescent current dominates total energy consumption. With only 9 uA typical IQ, the regulator adds negligible drain during sleep states, while the 4.0V minimum input allows direct connection to a single-cell Li-ion or 3xAA battery pack without a boost converter. The 300 mA output capability provides ample headroom for transmit bursts of sub-GHz radios or BLE modules that require short peaks well above their average current draw, and the 5.0V fixed output eliminates the need for an external feedback divider that would otherwise leak current.
Recommandé
Automotive 12V Accessory Rail
The NJW4184U3-05B-TE1 supports 12V automotive accessory rails because its 35V continuous rating tolerates the 40V load-dump transients specified by ISO 7637-2 when paired with an upstream TVS clamp. The 9 uA quiescent current is acceptable for body-control and infotainment modules that remain connected to the battery during parking, and the SOT-89-3 footprint is widely accepted in automotive PCB layouts. Designers should note that the -TE1 is the standard industrial grade; automotive AEC-Q100 qualification is not explicitly stated on the Nisshinbo product page and must be confirmed with the manufacturer for safety-critical applications.
Recommandé
HVAC Thermostat and Building Automation
The NJW4184U3-05B-TE1 fits HVAC thermostat and building automation designs that draw 24VAC rectified power and require a clean 5V rail for the thermostat MCU and display. The wide 4.0V to 35V input range tolerates the rectified 24VAC ripple without a separate pre-regulator, while the 9 uA IQ keeps standby draw below the 1W Energy Star limits for connected thermostats. The SOT-89-3 package provides adequate thermal margin at the typical 50-100 mA thermostat load, allowing designers to skip an external heatsink and reduce overall BOM cost in high-volume products.
Recommandé
Smart Meter Standby and Auxiliary Rail
The NJW4184U3-05B-TE1 provides a reliable auxiliary 5.0V rail in electricity, gas, and water smart meters drawing from a 12-24V bus or backup battery. The ultra-low 9 uA quiescent current keeps the regulator connected permanently without exceeding the meter's multi-year battery budget, while the 300 mA output is sufficient to power an MCU, metrology IC, and wireless M-Bus or LoRa module during transmit. The integrated current limit also protects against the short-circuit conditions that can occur during meter tampering events, which is a key safety and reliability requirement in utility-grade metering.
Recommandé
Portable Test and Measurement Instrument
The NJW4184U3-05B-TE1 suits portable handheld test and measurement instruments powered from a 6V to 30V bench supply or USB-PD source. The 35V input tolerance tolerates inductive kickback from relay coils and motor drivers inside the instrument, while the 9 uA quiescent current preserves battery life during long standby periods between measurements. The 5.0V fixed output is a standard rail for instrumentation ADCs, op-amps, and reference voltages, and the SOT-89-3 2.4 W dissipation rating covers continuous operation up to about 300 mA load without a separate heatsink.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour NJW4184U3-05B-TE1 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | NJW4184U3-03B-TE1 | NJW4184U3-12B-TE1 | NJW4184U3-15B-TE1 | NJW4184U3-05B-TE2 | NJW4184U3-06B-TE1 |
|---|---|---|---|---|---|---|
| Package | SOT-89-3 (U3) | SOT-89-3 (U3) - same | SOT-89-3 (U3) - same | SOT-89-3 (U3) - same | SOT-89-3 (U3) - same | SOT-89-3 (U3) - same |
| Brand | Nisshinbo Micro Devices | Nisshinbo Micro Devices | Nisshinbo Micro Devices | Nisshinbo Micro Devices | Nisshinbo Micro Devices | Nisshinbo Micro Devices |
| Output Voltage | 5.0 V | 3.3 V | 12 V | 15 V | 5.0 V (identical) | 6.0 V |
| Output Current | 300 mA | 300 mA | 300 mA | 300 mA | 300 mA | 300 mA |
| Input Voltage Range | 4.0 V to 35 V | 4.0 V to 35 V | 4.0 V to 35 V | 4.0 V to 35 V | 4.0 V to 35 V | 4.0 V to 35 V |
| Quiescent Current (typ) | 9 uA | 9 uA | 9 uA | 9 uA | 9 uA | 9 uA |
| Dropout Voltage (typ at 300 mA) | 100 mV to 200 mV | 100 mV to 200 mV | 100 mV to 200 mV | 100 mV to 200 mV | 100 mV to 200 mV | 100 mV to 200 mV |
| Power Dissipation | 2.4 W | 2.4 W | 2.4 W | 2.4 W | 2.4 W | 2.4 W |
Principaux différenciateurs
- Higher output current (300 mA) vs the lower-current NJW4183 family (vs NJW4183U3-05B-TE1)
- Ultra-low 9 uA quiescent current at no load (vs NJW4184U3-15B-TE1)
- Wide 35 V continuous input with 40 V transient rating (vs TPS7A30 (TI))
Notes de conception
Estimated: at VIN=24V, VOUT=5.0V, IOUT=200 mA, the NJW4184U3-05B-TE1 dissipates approximately (24-5)*0.2 = 3.8 W. The SOT-89-3 package is rated for 2.4 W with a properly designed copper land pattern. Operation above this requires either lowering VIN with a pre-regulator, reducing load current, or upgrading to the NJW4184DL1 (TO-252) variant rated for 3.125 W. Always solder the center tab to a continuous copper pour of at least 100 mm^2 for thermal relief.
Place a 0.1 uF X7R ceramic input capacitor within 2 mm of the VIN pin, and a 1 uF to 10 uF X7R ceramic output capacitor within 2 mm of the VOUT pin. The SOT-89-3 land pattern should provide a minimum of 100 mm^2 of copper under the center tab, with thermal vias to inner planes to reach the rated 2.4 W dissipation. Avoid routing noisy digital traces under the regulator tab to minimize ground bounce.
Do not exceed the 40 V absolute maximum input rating, even briefly - load-dump transients on 24V industrial buses can reach 60-80 V and demand an upstream TVS clamp. Do not assume the 9 uA IQ holds at full load; at 300 mA the quiescent current rises to about 22 uA, which is still negligible. Do not substitute the lower-current NJW4183 (100 mA) for the NJW4184 (300 mA) - the current limit will engage and the regulator will fold back or shut down.
Informations de conformité
RoHS and lead-free confirmed via Newark/Mouser listings as of 2026-10-09. AEC-Q100 automotive qualification not explicitly stated on the Nisshinbo product page - confirm with manufacturer for automotive applications. Halogen-free and conflict-mineral status not explicitly disclosed in the verified data.
