component
CS51414EDR8G
Public Made by Adomby adom
onsemi DC-DC Converters, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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CS51414EDR8G
onsemi · DC-DC Converters · SOIC-8
CS51414EDR8G from onsemi, in a SOIC-8. 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 | BOOST | power_in | The BOOST pin provides additional drive voltage to the on-chip NPN power transistor, and the resulting lower switch-on voltage improves efficiency; the datasheet rates BOOST at 40 V maximum and −0.3 V minimum. |
| 2 | VIN | power_in | This pin is the main power input to the IC, which accommodates input voltages from 4.5 V to 40 V. |
| 3 | VSW | output | This pin is the emitter connection of the on-chip NPN power transistor and the switch output to the inductor; it requires a catch diode and may see −1.0 V for less than 50 ns during switch flyback. |
| 4 | BIAS | power_in | The BIAS pin connects to the on-chip power rail so most internal circuitry can run from the regulated output or an external 3.3 V to 6.0 V supply to improve efficiency, and it is left floating if this feature is not used. |
| 5 | SHDNB | input | This active-low TTL-compatible shutdown input has an internal pull-up current source, and the IC enters sleep mode drawing less than 85 µA when the pin is pulled below 1.0 V; it may be left floating if shutdown is not required. |
| 6 | GND | power_in | This pin is the power return connection for the IC. |
| 7 | VFB | input | This pin is the inverting input of the error amplifier, and if VFB falls below 0.29 V the oscillator frequency is divided by four and current limit folds back to about 1 A. |
| 8 | VC | passive | This pin is the error amplifier output and PWM comparator input, and driving it should be avoided because on-chip test circuitry becomes active whenever current exceeding 0.5 mA is forced into the IC. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Frequency (CS51413/CS51414) | 446 | 520 | 594 | kHz | 4 | ||
| Frequency Line Regulation | 0.05 | 0.15 | %/V | 4 | |||
| Maximum Duty Cycle | 85 | 90 | 95 | % | 4 | ||
| VFB Frequency Foldback Threshold | 0.29 | 0.32 | 0.36 | V | 4 | ||
| Slope Compensation Voltage (CS51413/CS51414) | 25 | 50 | 75 | mV/s | Fix VFB, VC/TON | 4 | |
| Minimum Output Pulse Width (CS51413/CS51414) | 230 | ns | VFB to VSW | 4 | |||
| Current Limit | 1.6 | 2.3 | 3 | A | VFB > 0.36 V | 4 | |
| Foldback Current | 0.9 | 1.5 | 2.1 | A | VFB < 0.29 V | 4 | |
| Saturation Voltage | 0.4 | 0.7 | 1 | V | IOUT = 1.5 A, VBOOST = VIN + 2.5 V | 4 | |
| Current Limit Delay | 120 | 160 | ns | 4 | |||
| Internal Reference Voltage | 1.244 | 1.27 | 1.296 | V | 4 | ||
| FB Input Bias Current | 0.02 | 0.1 | A | 4 | |||
| Output Source Current | 15 | 25 | 35 | A | VC = 1.270 V, VFB = 1.0 V | 4 | |
| Output Sink Current | 15 | 25 | 35 | A | VC = 1.270 V, VFB = 2.0 V | 4 | |
| Output High Voltage | 1.39 | 1.46 | 1.53 | V | VFB = 1.0 V | 4 | |
| Output Low Voltage | 5 | 20 | 60 | mV | VFB = 2.0 V | 4 | |
| Sync Frequency Range (CS51413/CS51414) | 575 | 880 | kHz | 5 | |||
| Shutdown Threshold Voltage | 1 | 1.3 | 1.6 | V | ICC = 2 mA | 5 | |
| Shutdown Pin Bias Current | 0.14 | 5 | 35 | A | VSHDNB = 0 V | 5 | |
| Overtemperature Trip Point | 175 | 185 | 195 | °C | 5 | ||
| Quiescent Current | 6.25 | mA | ISW = 0 A | 5 | |||
| Shutdown Quiescent Current | 20 | 85 | A | VSHDNB = 0 V | 5 | ||
| Boost Operating Current | 6 | 15 | 40 | mA/A | VBOOST − VSW = 2.5 V | 5 | |
| Minimum Boost Voltage | 2.5 | V | 5 | ||||
| Startup Voltage | 2.2 | 3.3 | 4.4 | V | 5 | ||
| Minimum Output Current | 7 | 12 | mA | 5 | |||
| Pin VIN voltage rating | VIN | -0.3 | 40 | V | 4 | ||
| Pin BOOST voltage rating | BOOST | -0.3 | 40 | V | 4 | ||
| Pin VSW voltage rating | VSW | -0.6 | 40 | V | 4 | ||
| Pin VSW negative voltage | VSW | -1 | V | t < 50 ns | 4 | ||
| Pin VC voltage rating | VC | -0.3 | 7 | V | 4 | ||
| Pin SHDNB voltage rating | SHDNB | -0.3 | 7 | V | 4 | ||
| Pin BIAS voltage rating | BIAS | -0.3 | 7 | V | 4 | ||
| Pin VFB voltage rating | VFB | -0.3 | 7 | V | 4 | ||
| Pin GND voltage rating | GND | -0.3 | 7 | V | 4 | ||
| Pin VIN sink current | ISINK | 4 | A | 4 | |||
| Pin BOOST sink current | ISINK | 100 | mA | 4 | |||
| Pin VSW source current | ISOURCE | 4 | A | 4 | |||
| Pin VSW sink current | ISINK | 10 | mA | 4 | |||
| Pin VC source current | ISOURCE | 1 | mA | 4 | |||
| Pin VC sink current | ISINK | 1 | mA | 4 | |||
| Pin SHDNB source current | ISOURCE | 1 | mA | 4 | |||
| Pin SHDNB sink current | ISINK | 1 | mA | 4 | |||
| Pin BIAS source current | ISOURCE | 1 | mA | 4 | |||
| Pin BIAS sink current | ISINK | 50 | mA | 4 | |||
| Pin VFB source current | ISOURCE | 1 | mA | 4 | |||
| Pin VFB sink current | ISINK | 1 | mA | 4 | |||
| Pin GND source current | ISOURCE | 50 | mA | 4 | |||
| Pin GND sink current | ISINK | 1 | mA | 4 | |||
| Operating Junction Temperature Range | TJ | -40 | 150 | °C | 3 | ||
| Storage Temperature Range | TS | -65 | 150 | °C | 3 | ||
| ESD Damage Threshold (Human Body Model) | 2 | kV | Human Body Model | 3 | |||
| Lead Temperature Soldering Reflow for Leaded (SMD styles only) | 230 | °C | Reflow for Leaded (SMD styles only), Note 1 | 3 | |||
| Lead Temperature Soldering Reflow for Pb-Free (SMD styles only) | 260 | °C | Reflow for Pb-Free (SMD styles only), Note 2 | 3 | |||
| Input voltage | VIN | 4.5 | 40 | V | Electrical characteristics header: 4.5 V < VIN < 40 V | 4 | |
| Operating ambient temperature (E grade) | TA | -40 | 85 | °C | CS51414E: −40°C < TA < 85°C | 4 | |
| Operating junction temperature (E grade) | TJ | -40 | 125 | °C | CS51414E: −40°C < TJ < 125°C | 4 | |
| Thermal resistance junction-to-ambient (SOIC-8) | RJA | 165 | °C/W | Typical | 19 | ||
| Thermal resistance junction-to-case (SOIC-8) | RJC | 45 | °C/W | Typical | 19 |
CAD (KiCad official)
- Symbol:
CS51414EDR8G - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
cs51414edr8g-etched.step/cs51414edr8g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cs51414edr8g.step/cs51414edr8g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (20 pp, sha256
78b0f5888488b6f3, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).
# CS51414EDR8G
**onsemi** · DC-DC Converters · SOIC-8
CS51414EDR8G from onsemi, in a SOIC-8. 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 | BOOST | power_in | The BOOST pin provides additional drive voltage to the on-chip NPN power transistor, and the resulting lower switch-on voltage improves efficiency; the datasheet rates BOOST at 40 V maximum and −0.3 V minimum. |
| 2 | VIN | power_in | This pin is the main power input to the IC, which accommodates input voltages from 4.5 V to 40 V. |
| 3 | VSW | output | This pin is the emitter connection of the on-chip NPN power transistor and the switch output to the inductor; it requires a catch diode and may see −1.0 V for less than 50 ns during switch flyback. |
| 4 | BIAS | power_in | The BIAS pin connects to the on-chip power rail so most internal circuitry can run from the regulated output or an external 3.3 V to 6.0 V supply to improve efficiency, and it is left floating if this feature is not used. |
| 5 | SHDNB | input | This active-low TTL-compatible shutdown input has an internal pull-up current source, and the IC enters sleep mode drawing less than 85 µA when the pin is pulled below 1.0 V; it may be left floating if shutdown is not required. |
| 6 | GND | power_in | This pin is the power return connection for the IC. |
| 7 | VFB | input | This pin is the inverting input of the error amplifier, and if VFB falls below 0.29 V the oscillator frequency is divided by four and current limit folds back to about 1 A. |
| 8 | VC | passive | This pin is the error amplifier output and PWM comparator input, and driving it should be avoided because on-chip test circuitry becomes active whenever current exceeding 0.5 mA is forced into the IC. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Frequency (CS51413/CS51414) | | 446 | 520 | 594 | kHz | | 4 |
| Frequency Line Regulation | | | 0.05 | 0.15 | %/V | | 4 |
| Maximum Duty Cycle | | 85 | 90 | 95 | % | | 4 |
| VFB Frequency Foldback Threshold | | 0.29 | 0.32 | 0.36 | V | | 4 |
| Slope Compensation Voltage (CS51413/CS51414) | | 25 | 50 | 75 | mV/s | Fix VFB, VC/TON | 4 |
| Minimum Output Pulse Width (CS51413/CS51414) | | | | 230 | ns | VFB to VSW | 4 |
| Current Limit | | 1.6 | 2.3 | 3 | A | VFB > 0.36 V | 4 |
| Foldback Current | | 0.9 | 1.5 | 2.1 | A | VFB < 0.29 V | 4 |
| Saturation Voltage | | 0.4 | 0.7 | 1 | V | IOUT = 1.5 A, VBOOST = VIN + 2.5 V | 4 |
| Current Limit Delay | | | 120 | 160 | ns | | 4 |
| Internal Reference Voltage | | 1.244 | 1.27 | 1.296 | V | | 4 |
| FB Input Bias Current | | | 0.02 | 0.1 | A | | 4 |
| Output Source Current | | 15 | 25 | 35 | A | VC = 1.270 V, VFB = 1.0 V | 4 |
| Output Sink Current | | 15 | 25 | 35 | A | VC = 1.270 V, VFB = 2.0 V | 4 |
| Output High Voltage | | 1.39 | 1.46 | 1.53 | V | VFB = 1.0 V | 4 |
| Output Low Voltage | | 5 | 20 | 60 | mV | VFB = 2.0 V | 4 |
| Sync Frequency Range (CS51413/CS51414) | | 575 | | 880 | kHz | | 5 |
| Shutdown Threshold Voltage | | 1 | 1.3 | 1.6 | V | ICC = 2 mA | 5 |
| Shutdown Pin Bias Current | | 0.14 | 5 | 35 | A | VSHDNB = 0 V | 5 |
| Overtemperature Trip Point | | 175 | 185 | 195 | °C | | 5 |
| Quiescent Current | | | | 6.25 | mA | ISW = 0 A | 5 |
| Shutdown Quiescent Current | | | 20 | 85 | A | VSHDNB = 0 V | 5 |
| Boost Operating Current | | 6 | 15 | 40 | mA/A | VBOOST − VSW = 2.5 V | 5 |
| Minimum Boost Voltage | | | | 2.5 | V | | 5 |
| Startup Voltage | | 2.2 | 3.3 | 4.4 | V | | 5 |
| Minimum Output Current | | | 7 | 12 | mA | | 5 |
| Pin VIN voltage rating | VIN | -0.3 | | 40 | V | | 4 |
| Pin BOOST voltage rating | BOOST | -0.3 | | 40 | V | | 4 |
| Pin VSW voltage rating | VSW | -0.6 | | 40 | V | | 4 |
| Pin VSW negative voltage | VSW | -1 | | | V | t < 50 ns | 4 |
| Pin VC voltage rating | VC | -0.3 | | 7 | V | | 4 |
| Pin SHDNB voltage rating | SHDNB | -0.3 | | 7 | V | | 4 |
| Pin BIAS voltage rating | BIAS | -0.3 | | 7 | V | | 4 |
| Pin VFB voltage rating | VFB | -0.3 | | 7 | V | | 4 |
| Pin GND voltage rating | GND | -0.3 | | 7 | V | | 4 |
| Pin VIN sink current | ISINK | | | 4 | A | | 4 |
| Pin BOOST sink current | ISINK | | | 100 | mA | | 4 |
| Pin VSW source current | ISOURCE | | | 4 | A | | 4 |
| Pin VSW sink current | ISINK | | | 10 | mA | | 4 |
| Pin VC source current | ISOURCE | | | 1 | mA | | 4 |
| Pin VC sink current | ISINK | | | 1 | mA | | 4 |
| Pin SHDNB source current | ISOURCE | | | 1 | mA | | 4 |
| Pin SHDNB sink current | ISINK | | | 1 | mA | | 4 |
| Pin BIAS source current | ISOURCE | | | 1 | mA | | 4 |
| Pin BIAS sink current | ISINK | | | 50 | mA | | 4 |
| Pin VFB source current | ISOURCE | | | 1 | mA | | 4 |
| Pin VFB sink current | ISINK | | | 1 | mA | | 4 |
| Pin GND source current | ISOURCE | | | 50 | mA | | 4 |
| Pin GND sink current | ISINK | | | 1 | mA | | 4 |
| Operating Junction Temperature Range | TJ | -40 | | 150 | °C | | 3 |
| Storage Temperature Range | TS | -65 | | 150 | °C | | 3 |
| ESD Damage Threshold (Human Body Model) | | 2 | | | kV | Human Body Model | 3 |
| Lead Temperature Soldering Reflow for Leaded (SMD styles only) | | | | 230 | °C | Reflow for Leaded (SMD styles only), Note 1 | 3 |
| Lead Temperature Soldering Reflow for Pb-Free (SMD styles only) | | | | 260 | °C | Reflow for Pb-Free (SMD styles only), Note 2 | 3 |
| Input voltage | VIN | 4.5 | | 40 | V | Electrical characteristics header: 4.5 V < VIN < 40 V | 4 |
| Operating ambient temperature (E grade) | TA | -40 | | 85 | °C | CS51414E: −40°C < TA < 85°C | 4 |
| Operating junction temperature (E grade) | TJ | -40 | | 125 | °C | CS51414E: −40°C < TJ < 125°C | 4 |
| Thermal resistance junction-to-ambient (SOIC-8) | RJA | | 165 | | °C/W | Typical | 19 |
| Thermal resistance junction-to-case (SOIC-8) | RJC | | 45 | | °C/W | Typical | 19 |
## CAD (KiCad official)
- Symbol: `CS51414EDR8G`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `cs51414edr8g-etched.step` / `cs51414edr8g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cs51414edr8g.step` / `cs51414edr8g.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [onsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588936531411550208) (20 pp, sha256 `78b0f5888488b6f3`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/cs51414edr8g-datasheet.pdf)