NJW4132U2-A-TE2 - 40V 1.75A Boost Converter | Nisshinbo Micro Devices
N.º da peça: NJW4132U2-A-TE2 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $1.85 | $1,85 |
| 10 | $1.62 | $16,20 |
| 100 | $1.35 | $135,00 |
| 500 | $1.12 | $560,00 |
| 1.000 | $0.95 | $950,00 |
NJW4132U2-A-TE2 Visão geral
What is a boost converter? A boost converter is a switching DC-DC converter topology that produces an output voltage higher than its input. In the broader power management hierarchy, it sits under DC-DC converters, which themselves belong to power management ICs (PMICs). Boost converters use an inductor, switch, diode, and output capacitor to store and release energy, achieving efficiencies typically 80-95% that far exceed linear regulators when VIN is significantly below VOUT.
Key features of the NJW4132U2-A-TE2 include: 1.75A internal switch current, wide VIN 4.5V to 40V, high-frequency operation enabling small external LC components, MLCC-compatible output, integrated 45V MOSFET for derating transistor strength, built-in overcurrent protection, thermal shutdown, and an enable/standby pin. The SOT-89-5/6 package provides an exposed tab for thermal dissipation and occupies a footprint suitable for handheld and panel-mount designs where board area is at a premium.
The NJW4132U2 uses peak-current-mode PWM control with internal compensation, providing stable transient response across line and load variations. The wide 40V input withstand capability allows direct connection to 12V or 24V industrial battery rails, while the high-side drive architecture and internal 45V MOSFET derating protect against inductive switching transients. According to the Nisshinbo Micro Devices datasheet, the converter maintains regulation across the full input range and offers cycle-by-cycle current limiting.
Typical applications include industrial 24V bus boost to 36V/48V rails, automotive bias supplies from 12V battery to logic-level rails, LED backlight boost converters for panel displays, and battery-powered portable instruments. The wide input range particularly suits 12V/24V lead-acid battery systems where cold-crank transients and load-dump surges exceed normal operating voltage.
When designing with this device, derate the internal MOSFET at high VIN - the 45V rating provides margin against load-dump transients in 24V automotive systems. Place the input capacitor close to the IC and use a Schottky rectifier with low reverse recovery to maximize efficiency. According to the Nisshinbo datasheet, the feedback resistor divider should use 1%-tolerance parts for output voltage accuracy.
This page synthesizes distributor pricing, drop-in SOT-89-5 same-brand alternatives (NJW4132U2-B-TE2, NJW4132U2-C-TE2 family variants), and practical design notes not found in the manufacturer datasheet.
Alternativas drop-in para NJW4132U2-A-TE2 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
NJW4132U2-B-TE2
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
NJW4132U2-C-TE2
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
NJW4132U2-A-TE2 Classificações máximas e características elétricas
| Topologia | Boost (Step-Up) |
| Faixa de tensão de entrada | 4.5 V to 40 V |
| Switch Current (Peak) | 1.75 A |
| Switch MOSFET Rating | 45 V |
| Faixa de tensão de saída | Adjustable, 1 V and up |
| Tipo de saída | Adjustable |
| Número de saídas | 1 |
| Corrente de saída (máx.) | 2.25 A (per DigiKey listing) |
| Temperatura de operação | -40 C to +85 C (Industrial) |
| Encapsulamento | SOT-89-5/6 |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant (per distributor listings) |
| Output Capacitor Compatibility | Low-ESR MLCC supported |
| Protection Features | Overcurrent Protection, Thermal Shutdown |
Configuração de pinos do NJW4132U2-A-TE2
| Pino 1 | VIN — Power supply input (4.5V to 40V) |
| Pino 2 | GND — Ground reference |
| Pino 3 | EN — Enable/Standby control input |
| Pino 4 | FB — Feedback voltage (connect to resistor divider) |
| Pino 5 | SW — Switch node (connects to inductor) |
Aplicações típicas
NJW4132U2-A-TE2 é adequado para 6 aplicaçãos: 24V Industrial Bus Boost to 36V/48V, Automotive 12V Battery Boost Rail, LED Backlight Boost Driver, Portable Battery-Powered Instrument Boost, Solar Panel MPPT Bias Supply, Industrial Sensor Bias Supply.
24V Industrial Bus Boost to 36V/48V
The NJW4132U2-A-TE2 is well suited to step-up conversion from a 24V industrial bus (nominal 24V, transient range 18V-32V) to higher rails like 36V or 48V used by industrial sensor stacks and isolated gate drivers. Its 40V VIN rating provides margin against 24V bus transients, and the integrated 45V MOSFET removes the need for an external switching transistor. The 1.75A peak switch current supports loads up to approximately 5-8W, depending on duty cycle and inductor selection. Placed between the 24V input bulk capacitor and the boost inductor, the converter maintains regulation across the full industrial voltage range. Unlike a SEPIC or flyback topology, the simple boost configuration minimizes external component count and BOM cost for this common industrial rail-conversion use case.
Recomendado
Automotive 12V Battery Boost Rail
In automotive systems the NJW4132U2-A-TE2 boosts a 12V battery rail (8V-16V typical, with load-dump transients up to 40V) to higher voltages required by audio amplifiers, LED drivers, or sensor bias networks. The 40V VIN tolerance handles cold-crank and load-dump events that would damage conventional 30V boost ICs, while the integrated 45V MOSFET derates further for automotive reliability. The SOT-89-5/6 package fits within space-constrained head-unit and instrument-cluster PCBs. Place the input capacitor immediately at the VIN pin to suppress battery transients, and use a Schottky rectifier rated above 45V for the boost rectifier. Unlike a SEPIC, the boost topology here avoids a coupled inductor, simplifying the BOM.
Recomendado
LED Backlight Boost Driver
The NJW4132U2-A-TE2 drives LED strings in LCD backlight or indicator applications by boosting a 5V-12V rail to the 20V-36V typically required for series-connected LED arrays. The 1.75A peak switch current supports LED currents up to several hundred mA depending on string length, and the 45V MOSFET rating comfortably tolerates the boost voltage plus inductive ringing. By placing a current-sense resistor in the LED return path and tying the feedback divider to that sense point, the circuit becomes a constant-current LED driver. The high switching frequency enables a small inductor and ceramic output capacitor, keeping the backlight driver footprint compact for display modules and panel instrumentation.
Recomendado
Portable Battery-Powered Instrument Boost
Battery-powered portable instruments using 2-4 cell alkaline or single-cell Li-ion (2.7V-12V range) often require boost conversion to generate 5V, 12V, or 15V rails for op-amps, sensors, or interface transceivers. The NJW4132U2-A-TE2 operates from 4.5V minimum input and integrates the switch MOSFET, saving PCB area versus discrete boost designs. The 1.75A peak switch supports load currents in the hundreds of mA range typical of portable measurement instruments. Place a low-ESR ceramic input capacitor close to the IC to handle the boost converter's pulsed input current, and select an inductor with low DCR to maximize efficiency and battery runtime.
Recomendado
Solar Panel MPPT Bias Supply
Small solar-powered systems use the NJW4132U2-A-TE2 to generate bias rails (5V-36V) for microcontrollers, gate drivers, and battery chargers from low-voltage photovoltaic panels. The wide 4.5V-40V VIN range covers panels under partial-load conditions and accommodates cold-cloud voltage spikes. The 45V MOSFET provides derating margin for inductive transients at the switch node. The SOT-89-5/6 package fits within the compact junction-box or charge-controller enclosures typical of off-grid solar installations. For higher power or true MPPT tracking, consider a controller with dedicated PV input conditioning.
Recomendado
Industrial Sensor Bias Supply
Industrial 4-20mA loop-powered sensors, strain-gauge bridges, and isolated transducer front-ends need clean bias rails at 5V, 10V, or 24V generated from a 24V plant bus. The NJW4132U2-A-TE2 provides compact, integrated boost conversion for these bias rails, with the 40V input rating tolerating plant-voltage transients and the 1.75A switch supporting multiple sensor loads. The SOT-89-5/6 footprint fits inside sensor head enclosures and DIN-rail transmitter housings. Use a pi-filter (LC) at the output to attenuate switching ripple to levels acceptable for low-noise analog front-end stages.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para NJW4132U2-A-TE2 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | NJW4132U2-B-TE2 | NJW4132U2-C-TE2 |
|---|---|---|---|
| Package | SOT-89-5/6 | SOT-89-5/6 - same | SOT-89-5/6 - same |
| Brand | Nisshinbo Micro Devices | Nisshinbo Micro Devices - same | Nisshinbo Micro Devices - same |
| Topology | Boost | Boost | Boost |
| Input Voltage Range | 4.5 V to 40 V | 4.5 V to 40 V | 4.5 V to 40 V |
| Peak Switch Current | 1.75 A | 1.75 A | 1.75 A |
| Internal MOSFET Rating | 45 V | 45 V | 45 V |
| Output Current (Max) | 2.25 A | 2.25 A | 2.25 A |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Principais diferenciais
- 40V input withstand with integrated 45V MOSFET (vs TPS61170 (TI))
- Compact SOT-89-5/6 package with 1.75A peak switch (vs Discrete boost designs with external MOSFET)
- MLCC-compatible output stage (vs Older boost ICs requiring tantalum output capacitors)
Notas de projeto
Place the input bypass capacitor (typically 10uF X7R ceramic) as close as possible to the VIN pin (Pin 1) and the GND pin (Pin 2) of the SOT-89-5/6 package. Keep the boost loop (VIN capacitor, internal MOSFET, external inductor, Schottky rectifier) tight to minimize radiated EMI. Use a ground plane on the bottom layer to provide low-impedance return for switching currents, and route the SW trace (Pin 5) away from sensitive analog traces to prevent coupling.
The SOT-89-5/6 package's exposed tab provides the primary thermal path. Solder the tab to a copper pad of at least 50 mm^2 on the top layer to keep junction temperature within the -40C to +85C industrial range. At VIN=24V, VOUT=12V, IOUT=300mA, estimated power dissipation is approximately 1W in the internal MOSFET. Derate output current at higher VIN-VOUT differentials or consider an external MOSFET boost controller (e.g., LT8364EMSE) for higher power.
Do not exceed the 40V absolute maximum VIN even transiently - add a TVS diode or input clamp for 24V industrial bus applications with high-energy transients. Ensure the external inductor's saturation current is above 2A (greater than the 1.75A peak switch) to prevent inductance roll-off at peak current. The feedback resistor divider should use 1%-tolerance resistors and a low-TC type (50 ppm/C or better) to maintain output voltage accuracy across temperature.
Informações de conformidade
RoHS and lead-free compliance indicated by Nisshinbo product page and distributor listings. AEC-Q100 automotive grade not currently claimed - for automotive applications requiring AEC-Q100, consult Nisshinbo for automotive-grade part numbers.
