component
NJW1933F1-AT-TE2
Public Made by Adomby adom
Nisshinbo Micro Devices Inc. AC-DC Controllers & Regulators, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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NJW1933F1-AT-TE2
Nisshinbo Micro Devices Inc. · AC-DC Controllers & Regulators · SOT-23-6
NJW1933F1-AT-TE2 from Nisshinbo Micro Devices Inc., in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | N.C. | unconnected | Unused pin, not connected internally. |
| 2 | GND | power_in | Ground pin. |
| 3 | FB | input | Output voltage detecting pin; connect the output voltage through a resistor divider tap so the FB pin voltage becomes 1.245V (max rating 6V). |
| 4 | SHDN | input | Standby control pin; normal operation at high level (2.3V min to VIN), standby mode at low level (0.3V max) or open. |
| 5 | VIN | power_in | Power supply pin for power line; operating range 4.5V to 40V (45V absolute max). |
| 6 | SW | output | Switch output pin of the power MOSFET; switching current limit 0.8A min, 1.5A max. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nisshinbo Micro Devices Inc. |
| Package | SOT-23-6 |
| Category | Power Management ICs |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| ON Threshold Voltage | VT_ON | 4.2 | 4.35 | 4.5 | V | VIN = L→H | 4 |
| OFF Threshold Voltage | VT_OFF | 4.1 | 4.25 | 4.4 | V | VIN = H→L | 4 |
| Oscillation Frequency1 | fOSC1 | 400 | 500 | 600 | kHz | VFB=1.1V | 4 |
| Feedback Voltage | VB | 1.245 | V | ±1.6% (Ta=-40 to 105°C) | 4 | ||
| Feedback Voltage tolerance | VB | -1.6 | 1.6 | % | 4 | ||
| FB Pin Bias Current | IB | 10 | 100 | nA | VFB=1.3V | 4 | |
| Maximum Duty Cycle | MAXDUTY | 88 | 94 | % | VFB=1.1V | 4 | |
| Minimum ON Time | tON_min | 100 | 160 | ns | 4 | ||
| Switching Current Limit | ILIM | 0.8 | 1.1 | 1.5 | A | 4 | |
| Output ON Resistance | RON | 1 | 1.6 | Ω | ISW=400mA | 4 | |
| Switch Leakage Current | ILEAK | 1 | µA | VSHDN = 0V, VIN=45V, VSW=0V | 4 | ||
| SHDN ON Control Voltage | VSHDN(ON) | 2.3 | V | VSHDN = L→H; max VIN | 4 | ||
| SHDN OFF Control Voltage | VSHDN(OFF) | 0 | 0.3 | V | VSHDN = H→L | 4 | |
| SHDN Bias Current1 | ISHDN_BIAS1 | 5 | 10 | µA | VSHDN = 2.3V | 4 | |
| SHDN Bias Current2 | ISHDN_BIAS2 | 0.01 | 0.1 | µA | VSHDN = 0V | 4 | |
| Quiescent Current1 | IDD1 | 1.6 | 2.5 | mA | Not Switching, VFB=1.3V | 4 | |
| Quiescent Current2 | IDD2 | 2.2 | 3.2 | mA | No Load, VFB=1.1V | 4 | |
| Quiescent Current in SHDN | IDD_SHDN | 1 | µA | VSHDN = 0V | 4 | ||
| Input Voltage | VIN | 4.5 | 40 | V | Ta=25ºC | 3 | |
| Input Voltage | VIN | -0.3 | 45 | V | Ta=25°C | 3 | |
| VIN-SW pin voltage | VV-SW | -0.3 | 45 | V | Ta=25°C | 3 | |
| SHDN Voltage | VSHDN | -0.3 | 45 | V | Ta=25°C | 3 | |
| Feedback Pin Voltage | VFB | -0.3 | 6 | V | Ta=25°C | 3 | |
| Power Dissipation (2 layers) | PD | 510 | mW | 2-layer glass epoxy board (*1) | 3 | ||
| Power Dissipation (4 layers) | PD | 710 | mW | 4-layer glass epoxy board (*2) | 3 | ||
| Junction Temperature | Tj | -40 | 150 | °C | 3 | ||
| Operating Temperature | Topr | -40 | 105 | °C | 3 | ||
| Storage Temperature | Tstg | -50 | 150 | °C | 3 | ||
| Junction-to-ambient thermal resistance (2 layers) | θja | 245 | °C/W | 2-layer board (*3) | 5 | ||
| Junction-to-ambient thermal resistance (4 layers) | θja | 175 | °C/W | 4-layer board (*4) | 5 | ||
| Junction-to-top characterization parameter (2 layers) | ψjt | 70 | °C/W | 2-layer board (*3) | 5 | ||
| Junction-to-top characterization parameter (4 layers) | ψjt | 60 | °C/W | 4-layer board (*4) | 5 | ||
| Hysteresis Width | VHYS | 100 | mV | 4 | |||
| Oscillation Frequency2 | fOSC2 | 80 | kHz | VFB=0V | 4 |
CAD (KiCad official)
- Symbol:
NJW1933F1-AT-TE2 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
njw1933f1-at-te2-etched.step/njw1933f1-at-te2-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);njw1933f1-at-te2.step/njw1933f1-at-te2.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nisshinbo Micro Devices Inc. datasheet (21 pp, sha256
45f2a81ec16ce27e, retrieved 2026-10-27, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# NJW1933F1-AT-TE2
**Nisshinbo Micro Devices Inc.** · AC-DC Controllers & Regulators · SOT-23-6
NJW1933F1-AT-TE2 from Nisshinbo Micro Devices Inc., in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | N.C. | unconnected | Unused pin, not connected internally. |
| 2 | GND | power_in | Ground pin. |
| 3 | FB | input | Output voltage detecting pin; connect the output voltage through a resistor divider tap so the FB pin voltage becomes 1.245V (max rating 6V). |
| 4 | SHDN | input | Standby control pin; normal operation at high level (2.3V min to VIN), standby mode at low level (0.3V max) or open. |
| 5 | VIN | power_in | Power supply pin for power line; operating range 4.5V to 40V (45V absolute max). |
| 6 | SW | output | Switch output pin of the power MOSFET; switching current limit 0.8A min, 1.5A max. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nisshinbo Micro Devices Inc. |
| Package | SOT-23-6 |
| Category | Power Management ICs |
| Pins | 6 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| ON Threshold Voltage | VT_ON | 4.2 | 4.35 | 4.5 | V | VIN = L→H | 4 |
| OFF Threshold Voltage | VT_OFF | 4.1 | 4.25 | 4.4 | V | VIN = H→L | 4 |
| Oscillation Frequency1 | fOSC1 | 400 | 500 | 600 | kHz | VFB=1.1V | 4 |
| Feedback Voltage | VB | | 1.245 | | V | ±1.6% (Ta=-40 to 105°C) | 4 |
| Feedback Voltage tolerance | VB | -1.6 | | 1.6 | % | | 4 |
| FB Pin Bias Current | IB | | 10 | 100 | nA | VFB=1.3V | 4 |
| Maximum Duty Cycle | MAXDUTY | 88 | 94 | | % | VFB=1.1V | 4 |
| Minimum ON Time | tON_min | | 100 | 160 | ns | | 4 |
| Switching Current Limit | ILIM | 0.8 | 1.1 | 1.5 | A | | 4 |
| Output ON Resistance | RON | | 1 | 1.6 | Ω | ISW=400mA | 4 |
| Switch Leakage Current | ILEAK | | | 1 | µA | VSHDN = 0V, VIN=45V, VSW=0V | 4 |
| SHDN ON Control Voltage | VSHDN(ON) | 2.3 | | | V | VSHDN = L→H; max VIN | 4 |
| SHDN OFF Control Voltage | VSHDN(OFF) | 0 | | 0.3 | V | VSHDN = H→L | 4 |
| SHDN Bias Current1 | ISHDN_BIAS1 | | 5 | 10 | µA | VSHDN = 2.3V | 4 |
| SHDN Bias Current2 | ISHDN_BIAS2 | | 0.01 | 0.1 | µA | VSHDN = 0V | 4 |
| Quiescent Current1 | IDD1 | | 1.6 | 2.5 | mA | Not Switching, VFB=1.3V | 4 |
| Quiescent Current2 | IDD2 | | 2.2 | 3.2 | mA | No Load, VFB=1.1V | 4 |
| Quiescent Current in SHDN | IDD_SHDN | | | 1 | µA | VSHDN = 0V | 4 |
| Input Voltage | VIN | 4.5 | | 40 | V | Ta=25ºC | 3 |
| Input Voltage | VIN | -0.3 | | 45 | V | Ta=25°C | 3 |
| VIN-SW pin voltage | VV-SW | -0.3 | | 45 | V | Ta=25°C | 3 |
| SHDN Voltage | VSHDN | -0.3 | | 45 | V | Ta=25°C | 3 |
| Feedback Pin Voltage | VFB | -0.3 | | 6 | V | Ta=25°C | 3 |
| Power Dissipation (2 layers) | PD | | | 510 | mW | 2-layer glass epoxy board (*1) | 3 |
| Power Dissipation (4 layers) | PD | | | 710 | mW | 4-layer glass epoxy board (*2) | 3 |
| Junction Temperature | Tj | -40 | | 150 | °C | | 3 |
| Operating Temperature | Topr | -40 | | 105 | °C | | 3 |
| Storage Temperature | Tstg | -50 | | 150 | °C | | 3 |
| Junction-to-ambient thermal resistance (2 layers) | θja | | 245 | | °C/W | 2-layer board (*3) | 5 |
| Junction-to-ambient thermal resistance (4 layers) | θja | | 175 | | °C/W | 4-layer board (*4) | 5 |
| Junction-to-top characterization parameter (2 layers) | ψjt | | 70 | | °C/W | 2-layer board (*3) | 5 |
| Junction-to-top characterization parameter (4 layers) | ψjt | | 60 | | °C/W | 4-layer board (*4) | 5 |
| Hysteresis Width | VHYS | | 100 | | mV | | 4 |
| Oscillation Frequency2 | fOSC2 | | 80 | | kHz | VFB=0V | 4 |
## CAD (KiCad official)
- Symbol: `NJW1933F1-AT-TE2`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `njw1933f1-at-te2-etched.step` / `njw1933f1-at-te2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `njw1933f1-at-te2.step` / `njw1933f1-at-te2.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Nisshinbo Micro Devices Inc. datasheet](docs/njw1933f1-at-te2-datasheet.pdf) (21 pp, sha256 `45f2a81ec16ce27e`, retrieved 2026-10-27, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/njw1933f1-at-te2-datasheet.pdf)