NJW4132U2-CT1-TE1 - 45V/1.75A 2MHz Boost Converter | Nisshinbo
MPN: NJW4132U2-CT1-TE1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.21 | $1.21 |
| 10 | $1.08 | $10.80 |
| 100 | $0.94 | $94.00 |
| 500 | $0.82 | $410.00 |
| 1,000 | $0.71 | $710.00 |
NJW4132U2-CT1-TE1 Overview
A boost (step-up) converter is a type of switching DC-DC converter that produces an output voltage higher than its input voltage. Boost converters belong to the broader switching regulator family, which also includes buck (step-down), buck-boost, and SEPIC topologies. Within the power management hierarchy they sit between the linear regulator (low noise, low VIN-VOUT headroom) and the charge-pump (low power, simple architecture). High-frequency switching regulators like the NJW4132 enable small magnetics and ceramic output capacitors, replacing the bulky electrolytics required by older converters running at 100 kHz to 500 kHz.
Key features include the 2 MHz switching frequency that minimizes passive component footprint, integrated 45V power switch that withstands automotive load-dump transients, ceramic output capacitor compatibility for low-ESR designs, and built-in protections (overcurrent, thermal shutdown, undervoltage lockout) per the manufacturer datasheet. The 4.5V to 40V input range covers 5V, 12V, 24V, and 36V industrial bus rails.
The NJW4132U2 uses peak-current-mode control architecture with internal slope compensation, providing stable loop response across a wide range of load and line conditions. The 2 MHz oscillator and small SOT-89-5/6 package allow single-sided PCB assembly in space-constrained applications. The high 45V switch rating supplies designs that must ride through load-dump pulses on 12V or 24V automotive buses.
Typical applications include bias supplies for LCD/OLED display panels, point-of-load (POL) regulators after a 12V or 24V bus, LED backlight drivers, battery-powered industrial equipment, and energy-harvesting power conditioning. The wide VIN range and small footprint make it particularly attractive for body-electronics and metering end nodes.
When designing with this part, ensure the inductor saturation current exceeds the 1.75A peak switch rating, and place input capacitors close to the IC to minimize switching noise. The thermal pad of the SOT-89-5/6 package requires adequate copper to keep junction temperature below the 150C maximum under worst-case load.
This page synthesizes distributor stock and pricing, drop-in same-package alternatives, and practical thermal design notes that supplement the manufacturer's datasheet and help shorten the design review path.
Drop-in alternatives for NJW4132U2-CT1-TE1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
NJW4132U2-C-TE1
✅ Drop-In📋 Reference alternative (not in catalog)
NJW4132U2-C-TE2
✅ Drop-In📋 Reference alternative (not in catalog)
NJW4132U2-CT1-TE1 Maximum Ratings & Electrical Characteristics
| Topology | Boost (Step-Up) |
| Input Voltage Range | 4.5 V to 40 V |
| Output Voltage | Adjustable (positive) |
| Reference Voltage | 1.0 V |
| Switching Frequency | 2.0 MHz (typ) |
| Integrated Switch Rating | 45 V / 1.75 A MOSFET |
| Maximum Output Current (Distributor) | 2.25 A |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Control Method | Current-mode PWM |
| Output Capacitor | Low-ESR ceramic compatible |
| Package | SOT-89-5/6 |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
NJW4132U2-CT1-TE1 Pin Configuration
| Pin 1 | SW — Switch node (drain of internal 45V/1.75A MOSFET) |
| Pin 2 | GND — Ground reference |
| Pin 3 | FB — Feedback input (1.0V reference) |
| Pin 4 | EN — Enable (active-high logic input) |
| Pin 5 | VIN — Input supply (4.5V to 40V) |
| Pin 6 | TAB — Thermal pad / exposed tab (typically GND) |
Typical Applications
NJW4132U2-CT1-TE1 is suitable for 6 applications: LCD/OLED Display Bias Supply, Automotive 12V/24V Point-of-Load Boost, LED Backlight Driver, Industrial 24V Sensor Bias, Portable / Battery-Powered Equipment, Energy-Harvesting Power Conditioning.
LCD/OLED Display Bias Supply
The NJW4132U2-CT1-TE1 delivers stable high-voltage rails for TFT LCD and OLED panels from a low-voltage system bus. With 4.5 V to 40 V input support, the same regulator can source 13 V to 38 V bias rails directly from a 5 V or 12 V system supply. The 2 MHz switching frequency enables small ceramic output capacitors, allowing slim display-module designs where 100 uF+ electrolytic tanks would be impractical. Per the Nisshinbo datasheet typical application circuit, a 22 uH inductor combined with 4.7 uF ceramic input/output caps yields less than 30 mV output ripple.
Recommended
Automotive 12V/24V Point-of-Load Boost
The NJW4132U2-CT1-TE1 is well suited as a boost POL after the 12 V or 24 V automotive bus to generate 18 V, 28 V, or 36 V rails for sensors, gate drivers, or audio amplifiers. Its 45 V integrated MOSFET withstands 24 V load-dump transients per ISO 7637-2, and the 1.75 A switch current supplies 0.5-1.0 A continuous load at typical boost ratios. The 40 V continuous input rating covers the highest sustained automotive voltage without derating, and 2 MHz switching reduces AM-band interference compared to legacy 100-500 kHz converters.
Recommended
LED Backlight Driver
The NJW4132U2-CT1-TE1 drives series-LED strings for LCD backlights where input voltage is below the LED forward voltage sum. A 12 V input can drive 4-6 white LEDs in series at 100-300 mA using a current-setting resistor at the FB pin. The 1.75 A peak switch current supports up to ~500 mA continuous LED current at typical boost ratios, and the 2 MHz frequency avoids audible ceramic-cap noise. Nisshinbo's typical application includes a simple single-feedback configuration with the 1.0 V reference and a sense resistor.
Recommended
Industrial 24V Sensor Bias
The NJW4132U2-CT1-TE1 generates 30 V to 36 V bias rails from a 24 V industrial bus to power loop-powered 4-20 mA transmitters, photo-multiplier tubes, or insulation-monitoring circuits. The 40 V maximum continuous input handles the 24 V nominal plus 20% tolerance plus transient margin. Wide VIN reduces the part count compared to a discrete boost implementation, and the SOT-89-5/6 footprint supports through-hole-replacement density. Nisshinbo's datasheet specifies OCP, OVP, and thermal shutdown to survive field faults.
Recommended
Portable / Battery-Powered Equipment
The NJW4132U2-CT1-TE1 starts from 4.5 V, making it suitable for boost conversion from a single-cell Li-ion (3.0-4.2 V), 3-cell NiMH, or USB-C bus. It can drive 5 V/1 A from a Li-ion source for USB-OTG or peripheral supplies in portable test gear, dataloggers, or handheld industrial tools. The 2 MHz frequency keeps the converter above the AM band to avoid EMI conflicts with cellular radios in connected devices, and the SOT-89-5/6 enables compact single-sided PCB layouts in space-constrained enclosures.
Recommended
Energy-Harvesting Power Conditioning
The NJW4132U2-CT1-TE1 conditions low-voltage outputs from solar, thermoelectric, or vibration harvesters up to usable 3.3 V or 5 V rails for MCUs and wireless sensors. Its 4.5 V minimum input is slightly above the open-circuit voltage of single photovoltaic cells, so it suits small PV arrays or TEG-PTC generators. The 1.75 A switch can source 200-400 mA at typical harvest-to-rail ratios, supporting continuous IoT-sensor operation. Nisshinbo's internal soft-start reduces inrush when a harvester first connects.
Recommended
Recommended Products Summary
Engineering reference data for NJW4132U2-CT1-TE1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | NJW4132U2-C-TE1 | NJW4132U2-C-TE2 | LM2733XMF/NOPB |
|---|---|---|---|---|
| Brand | Nisshinbo Micro Devices | Nisshinbo Micro Devices | Nisshinbo Micro Devices | Texas Instruments |
| Package | SOT-89-5/6 | SOT-89-5/6 (same) | SOT-89-5/6 (same) | SOT-23-6 (DBV) |
| Topology | Boost | Boost | Boost | Boost |
| Input Voltage Range | 4.5V to 40V | 4.5V to 40V | 4.5V to 40V | 2.7V to 14V |
| Switch Rating | 45V / 1.75A | 45V / 1.75A | 45V / 1.75A | 30V / 1.8A |
| Switching Frequency | 2.0 MHz | 2.0 MHz | 2.0 MHz | 1.6 MHz |
| Reference Voltage | 1.0 V | 1.0 V | 1.0 V | 1.23 V |
Key Differentiators
- Higher 45V switch voltage rating (vs LM2733XMF/NOPB)
- Wider 4.5V to 40V input range (vs LM2733XMF/NOPB)
- Same-die reel variants for volume production (vs NJW4132U2-C-TE1)
Design Notes
Estimated: at VIN=12V, VOUT=24V, IOUT=300mA, input current is ~0.65A. Power dissipation is approximately (0.65A * 12V) - (0.30A * 24V) = 0.6W in the IC plus switching losses. The SOT-89-5/6 thermal pad (theta_JA ~50 C/W on a 1 sq-inch copper pour) gives a ~30 C rise, keeping Tj well below the 150 C maximum. For continuous >500 mA output, increase copper pour to 2-3 sq inches to keep Tj below 125 C at 70 C ambient.
Place the input capacitor (4.7 uF X7R ceramic minimum, 10 uF recommended) within 2 mm of the VIN pin to minimize switching noise. Route the SW node trace short and narrow to reduce radiated EMI, and use a ground-pour shield on the layer beneath the inductor and switch node. Place the FB trace away from the SW node to avoid noise coupling; a 5 mm keep-out around the SW trace is recommended per typical boost-converter layout guidelines.
Do not exceed the 40 V absolute-maximum input voltage, including transients; add a TVS clamp (e.g., 47 V SMAJ) if the source is a load-dump-prone automotive environment. The inductor saturation current must exceed 1.75 A peak switch current; a 22 uH inductor with 2.5 A Isat rating is a typical safe choice. The FB resistor divider uses 1% resistors for output accuracy; the high-side resistor sets bias current at 50-100 uA to minimize quiescent loss.
Compliance Information
RoHS compliance confirmed in LCSC datasheet and Nisshinbo product page. AEC-Q100 not explicitly qualified for this suffix; confirm with Nisshinbo for automotive deployments. REACH, halogen-free, and conflict-minerals declarations are not stated in the provided distributor data.
