component
BD90620EFJ-CE2
Public Made by Adomby adom
ROHM Semicon DC-DC Converters, HTSOP-8-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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BD90620EFJ-CE2
ROHM Semicon · DC-DC Converters · HTSOP-8-EP
BD90620EFJ-CE2 from ROHM Semicon, in a HTSOP-8-EP. 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 | RT | passive | Switching frequency setting resistor connection; the resistor sets the switching frequency in the 50 kHz to 600 kHz range. |
| 2 | SW | output | Switching output of the integrated Pch POWER MOSFET. |
| 3 | EN / SYNC | input | Enable and external clock input; normal operation above 2.6 V, shutdown below 0.8 V, and an external clock within ±20 % of the RT-set frequency synchronizes switching. |
| 4 | GND | power_in | Ground. |
| 5 | VC | output | Error amplifier output that controls the switching duty and connects to the external phase compensation circuit. |
| 6 | VIN | power_in | Power supply input (3.5 V to 36 V, initial startup over 3.9 V); must be shorted to PVIN. |
| 7 | PVIN | power_in | Power supply input for the power stage; must be shorted to VIN. |
| 8 | FB | input | Output voltage feedback input compared with the 0.8 V (Typ) reference of the error amplifier. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | HTSOP-8-EP |
| Category | Power Management ICs |
| Pins | 9 |
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 Output Switch Current of Overcurrent Protection | ISWLIMIT20 | 2.5 | 4.3 | A | Ta = -40 °C to +125 °C, VIN = 13.2 V, VEN/SYNC = 5 V | 6 | |
| Shutdown Circuit Current | ISDN | 0 | 5 | μA | VEN / SYNC = 0 V, Ta < 105 °C | 6 | |
| Circuit Current | IIN | 2.2 | 3.3 | mA | Io = 0 A, VFB = 2 V | 6 | |
| POWER MOSFET ON Resistance | RON | 0.16 | 0.32 | Ω | ISW = 30 mA | 6 | |
| Output Leak Current | IOLK | 0 | 5 | μA | VIN = 36 V, VEN / SYNC = 0 V, Ta < 105 °C | 6 | |
| Reference Voltage 1 | VREF1 | 0.792 | 0.8 | 0.808 | V | VVC = VFB, Ta = 25 °C | 6 |
| Reference Voltage 2 | VREF2 | 0.784 | 0.8 | 0.816 | V | VVC = VFB | 6 |
| Input Bias Current | IB | -1 | 1 | μA | 6 | ||
| VC Sink Current | IVCSINK | -76.5 | -54 | -31.5 | μA | VVC = 1.25 V, VFB = 1.3 V | 6 |
| VC Source Current | IVCSOURCE | 31.5 | 54 | 76.5 | μA | VVC = 1.25 V, VFB = 0.3 V | 6 |
| Trans Conductance | GEA | 135 | 270 | 540 | μA / V | IVC = ±10 μA, VVC = 1.25 V | 6 |
| Soft Start Time | TSS | 1.13 | 1.38 | 1.63 | ms | RRT = 27 kΩ | 6 |
| Switching Frequency | fSW | 450 | 500 | 550 | kHz | RRT = 27 kΩ | 6 |
| Enable / Sync Threshold Voltage | VEN / SYNC | 0.8 | 1.9 | 2.6 | V | 6 | |
| SYNC Current | IEN / SYNC | 23 | 50 | μA | VEN / SYNC = 5 V | 6 | |
| UVLO ON Mode Voltage | VUVLO_ON | 3.24 | 3.5 | V | 6 | ||
| UVLO OFF Mode Voltage | VUVLO_OFF | 3.52 | 3.9 | V | 6 | ||
| Reference Voltage Input Regulation | ΔVREF | 0.5 | % | 3.5 V ≤ VIN ≤ 36 V | 6 | ||
| Current Sense Trans Conductance | GCS | 5.2 | A / V | 6 | |||
| Frequency Input Regulation | ΔfSW | 1 | % | 3.5 V ≤ VIN ≤ 36 V | 6 | ||
| UVLO Hysteresis | VUVLO_HYS | 280 | mV | 6 | |||
| Input Power Supply Voltage | VIN, PVIN | -0.3 | 42 | V | Ta = 25 °C | 5 | |
| EN / SYNC Pin Voltage | VEN / SYNC | -0.3 | V | Upper limit VIN; Ta = 25 °C | 5 | ||
| RT, VC, FB Pin Voltage | VRT, VVC, VFB | -0.3 | 7 | V | Ta = 25 °C | 5 | |
| Power Dissipation HTSOP-J8 | Pd | 3.1 | W | Reduce by 24.8 mW / °C above 25 °C; 4-layer board | 5 | ||
| Storage Temperature Range | Tstg | -55 | 150 | °C | 5 | ||
| Maximum Junction Temperature | Tjmax | 150 | °C | 5 | |||
| Operating Power Supply Voltage | VIN, PVIN | 3.5 | 36 | V | Initial startup is over 3.9 V | 5 | |
| Operating Temperature Range | Topr | -40 | 125 | °C | 5 | ||
| Output Switch Current | ISW20 | 2.5 | A | BD90620HFP/EFJ-C; includes output DC current and ripple current | 5 | ||
| Output Voltage | VO | 0.8 | V | Upper limit VIN | 5 | ||
| Min ON Pulse Width | TON_MIN | 250 | ns | 5 | |||
| Switching Frequency | fSW | 50 | 600 | kHz | 5 | ||
| Switching Frequency Set Resistance | RRT | 22 | 330 | kΩ | 5 | ||
| Synchronous Operation Frequency Range | fSYNC | 50 | 600 | kHz | 5 | ||
| Synchronous Operation Frequency | fSYNC_RT | -20 | 20 | % | 5 | ||
| External Clock ON Duty | DSYNC | 10 | 90 | % | 5 | ||
| Capacitance of Input Capacitor | CIN | 2.4 | µF | Including temperature, DC bias and aging change | 5 | ||
| Thermal Resistance Junction-Ambient, 1-layer PCB (HTSOP-J8) | θja | 189.4 | °C / W | 1-layer PCB, 114.3 mm x 76.2 mm x 1.60 mmt | 32 | ||
| Thermal Resistance Junction-Ambient, 4-layer PCB (HTSOP-J8) | θja | 40.3 | °C / W | 4-layer PCB, 114.3 mm x 76.2 mm x 1.60 mmt | 32 | ||
| Thermal Resistance Junction-Case Top (HTSOP-J8) | θjc | 44 | °C / W | Top | 32 | ||
| Thermal Resistance Junction-Case Bottom (HTSOP-J8) | θjc | 14 | °C / W | Bottom | 32 | ||
| Junction-Top Characterization Parameter, 1-layer PCB (HTSOP-J8) | ψJT | 21 | °C / W | 1-layer PCB | 32 | ||
| Junction-Top Characterization Parameter, 4-layer PCB (HTSOP-J8) | ψJT | 5 | °C / W | 4-layer PCB | 32 |
CAD (KiCad official)
- Symbol:
BD90620EFJ-CE2 - Footprint:
Package_SO:HTSOP-8-1EP_3.9x4.9mm_P1.27mm_EP2.4x3.2mm - 3D model: HTSOP-8-EP (KiCad packages3D, STEP)
- 3D model files:
bd90620efj-ce2-etched.step/bd90620efj-ce2-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bd90620efj-ce2.step/bd90620efj-ce2.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ROHM Semicon datasheet (43 pp, sha256
10ed871c6d5e80ea, retrieved 2026-10-31, tier: manufacturer) - 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).
# BD90620EFJ-CE2
**ROHM Semicon** · DC-DC Converters · HTSOP-8-EP
BD90620EFJ-CE2 from ROHM Semicon, in a HTSOP-8-EP. 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 | RT | passive | Switching frequency setting resistor connection; the resistor sets the switching frequency in the 50 kHz to 600 kHz range. |
| 2 | SW | output | Switching output of the integrated Pch POWER MOSFET. |
| 3 | EN / SYNC | input | Enable and external clock input; normal operation above 2.6 V, shutdown below 0.8 V, and an external clock within ±20 % of the RT-set frequency synchronizes switching. |
| 4 | GND | power_in | Ground. |
| 5 | VC | output | Error amplifier output that controls the switching duty and connects to the external phase compensation circuit. |
| 6 | VIN | power_in | Power supply input (3.5 V to 36 V, initial startup over 3.9 V); must be shorted to PVIN. |
| 7 | PVIN | power_in | Power supply input for the power stage; must be shorted to VIN. |
| 8 | FB | input | Output voltage feedback input compared with the 0.8 V (Typ) reference of the error amplifier. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | HTSOP-8-EP |
| Category | Power Management ICs |
| Pins | 9 |
## 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 Output Switch Current of Overcurrent Protection | ISWLIMIT20 | 2.5 | 4.3 | | A | Ta = -40 °C to +125 °C, VIN = 13.2 V, VEN/SYNC = 5 V | 6 |
| Shutdown Circuit Current | ISDN | | 0 | 5 | μA | VEN / SYNC = 0 V, Ta < 105 °C | 6 |
| Circuit Current | IIN | | 2.2 | 3.3 | mA | Io = 0 A, VFB = 2 V | 6 |
| POWER MOSFET ON Resistance | RON | | 0.16 | 0.32 | Ω | ISW = 30 mA | 6 |
| Output Leak Current | IOLK | | 0 | 5 | μA | VIN = 36 V, VEN / SYNC = 0 V, Ta < 105 °C | 6 |
| Reference Voltage 1 | VREF1 | 0.792 | 0.8 | 0.808 | V | VVC = VFB, Ta = 25 °C | 6 |
| Reference Voltage 2 | VREF2 | 0.784 | 0.8 | 0.816 | V | VVC = VFB | 6 |
| Input Bias Current | IB | -1 | | 1 | μA | | 6 |
| VC Sink Current | IVCSINK | -76.5 | -54 | -31.5 | μA | VVC = 1.25 V, VFB = 1.3 V | 6 |
| VC Source Current | IVCSOURCE | 31.5 | 54 | 76.5 | μA | VVC = 1.25 V, VFB = 0.3 V | 6 |
| Trans Conductance | GEA | 135 | 270 | 540 | μA / V | IVC = ±10 μA, VVC = 1.25 V | 6 |
| Soft Start Time | TSS | 1.13 | 1.38 | 1.63 | ms | RRT = 27 kΩ | 6 |
| Switching Frequency | fSW | 450 | 500 | 550 | kHz | RRT = 27 kΩ | 6 |
| Enable / Sync Threshold Voltage | VEN / SYNC | 0.8 | 1.9 | 2.6 | V | | 6 |
| SYNC Current | IEN / SYNC | | 23 | 50 | μA | VEN / SYNC = 5 V | 6 |
| UVLO ON Mode Voltage | VUVLO_ON | | 3.24 | 3.5 | V | | 6 |
| UVLO OFF Mode Voltage | VUVLO_OFF | | 3.52 | 3.9 | V | | 6 |
| Reference Voltage Input Regulation | ΔVREF | | 0.5 | | % | 3.5 V ≤ VIN ≤ 36 V | 6 |
| Current Sense Trans Conductance | GCS | | 5.2 | | A / V | | 6 |
| Frequency Input Regulation | ΔfSW | | 1 | | % | 3.5 V ≤ VIN ≤ 36 V | 6 |
| UVLO Hysteresis | VUVLO_HYS | | 280 | | mV | | 6 |
| Input Power Supply Voltage | VIN, PVIN | -0.3 | | 42 | V | Ta = 25 °C | 5 |
| EN / SYNC Pin Voltage | VEN / SYNC | -0.3 | | | V | Upper limit VIN; Ta = 25 °C | 5 |
| RT, VC, FB Pin Voltage | VRT, VVC, VFB | -0.3 | | 7 | V | Ta = 25 °C | 5 |
| Power Dissipation HTSOP-J8 | Pd | | | 3.1 | W | Reduce by 24.8 mW / °C above 25 °C; 4-layer board | 5 |
| Storage Temperature Range | Tstg | -55 | | 150 | °C | | 5 |
| Maximum Junction Temperature | Tjmax | | | 150 | °C | | 5 |
| Operating Power Supply Voltage | VIN, PVIN | 3.5 | | 36 | V | Initial startup is over 3.9 V | 5 |
| Operating Temperature Range | Topr | -40 | | 125 | °C | | 5 |
| Output Switch Current | ISW20 | | | 2.5 | A | BD90620HFP/EFJ-C; includes output DC current and ripple current | 5 |
| Output Voltage | VO | 0.8 | | | V | Upper limit VIN | 5 |
| Min ON Pulse Width | TON_MIN | 250 | | | ns | | 5 |
| Switching Frequency | fSW | 50 | | 600 | kHz | | 5 |
| Switching Frequency Set Resistance | RRT | 22 | | 330 | kΩ | | 5 |
| Synchronous Operation Frequency Range | fSYNC | 50 | | 600 | kHz | | 5 |
| Synchronous Operation Frequency | fSYNC_RT | -20 | | 20 | % | | 5 |
| External Clock ON Duty | DSYNC | 10 | | 90 | % | | 5 |
| Capacitance of Input Capacitor | CIN | 2.4 | | | µF | Including temperature, DC bias and aging change | 5 |
| Thermal Resistance Junction-Ambient, 1-layer PCB (HTSOP-J8) | θja | | 189.4 | | °C / W | 1-layer PCB, 114.3 mm x 76.2 mm x 1.60 mmt | 32 |
| Thermal Resistance Junction-Ambient, 4-layer PCB (HTSOP-J8) | θja | | 40.3 | | °C / W | 4-layer PCB, 114.3 mm x 76.2 mm x 1.60 mmt | 32 |
| Thermal Resistance Junction-Case Top (HTSOP-J8) | θjc | | 44 | | °C / W | Top | 32 |
| Thermal Resistance Junction-Case Bottom (HTSOP-J8) | θjc | | 14 | | °C / W | Bottom | 32 |
| Junction-Top Characterization Parameter, 1-layer PCB (HTSOP-J8) | ψJT | | 21 | | °C / W | 1-layer PCB | 32 |
| Junction-Top Characterization Parameter, 4-layer PCB (HTSOP-J8) | ψJT | | 5 | | °C / W | 4-layer PCB | 32 |
## CAD (KiCad official)
- Symbol: `BD90620EFJ-CE2`
- Footprint: `Package_SO:HTSOP-8-1EP_3.9x4.9mm_P1.27mm_EP2.4x3.2mm`
- 3D model: HTSOP-8-EP (KiCad packages3D, STEP)
- 3D model files: `bd90620efj-ce2-etched.step` / `bd90620efj-ce2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bd90620efj-ce2.step` / `bd90620efj-ce2.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [ROHM Semicon datasheet](docs/bd90620efj-ce2-datasheet.pdf) (43 pp, sha256 `10ed871c6d5e80ea`, retrieved 2026-10-31, tier: manufacturer)
- **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/bd90620efj-ce2-datasheet.pdf)