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OB2001ZCPA
Public Made by Adomby adom
OB(On-Bright Elec) AC-DC Controllers & Regulators, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownOB2001ZCPA
OB(On-Bright Elec) · AC-DC Controllers & Regulators · SOP-8
OB2001ZCPA from OB(On-Bright Elec), in a SOP-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 | VS | power_in | Connected to the source of the external n-channel MOSFET; abs max -0.6V to 7V, and should be shorted directly to GND under the package. |
| 2 | VS | power_in | Connected to the source of the external n-channel MOSFET; abs max -0.6V to 7V, and should be shorted directly to GND under the package. |
| 3 | VD | input | Connected to the external n-channel MOSFET drain for Vds sensing; abs max -2.5V to 50V, with a 10 ohm series resistor to Drain recommended for ESD. |
| 4 | Drain | bidirectional | SR MOSFET drain pin connected to the secondary-side transformer winding; abs max -0.6V to BVdss (50V min). |
| 5 | GND | power_in | Ground. |
| 6 | VDD | power_in | Power supply, recommended 4V to 5.5V (abs max -0.6V to 7V), with UVLO on at 3.0V typ and off at 3.1V typ. |
| 7 | Vin | power_in | System output voltage detection with overshoot clamp triggers at 5.65V (1st) and 6.15V (2nd); abs max -0.6V to 7V. |
| 8 | RT | output | Minimum on time control pin with a resistor to GND (Tonmin = 8RT10E-11), reference voltage 1V typ; abs max -0.6V to 7V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | OB(On-Bright Elec) |
| Package | SOP-8 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| UVLO entry | UVLO(ON) | 2.8 | 3 | 3.2 | V | VDD Under Voltage Lockout Entry | 5 |
| UVLO exit | UVLO(OFF) | 2.9 | 3.1 | 3.3 | V | VDD Under Voltage Lockout Exit (Recovery) | 5 |
| Voltage reference at RT pin | Vrt | 0.95 | 1 | 1.05 | V | 5 | |
| Operation current | I_VDD_operation | 1.5 | 2 | mA | Frequency@VD=65KHz,VDD=5V | 5 | |
| Operation current | I_VDD_operation | 0.5 | 0.7 | mA | Frequency@VD=2KHz,VDD=5V | 5 | |
| Minimum VDD regulation voltage | VDD_regulation_mini | 4.2 | V | 5 | |||
| SR MOSFET turn on threshold | Vth_SR_act | -350 | mV | detection at VD | 5 | ||
| SR MOSFET turn off threshold | Vth_SR_deact | -5 | mV | detection at VD | 5 | ||
| Turn-on propagation delay | Tdelay_on | 100 | ns | 5 | |||
| Turn-off propagation delay | Tdelay_off | 75 | ns | 5 | |||
| SR MOSFET minimum on time | T_minimum_on | 1.9 | us | RT=25KΩ | 5 | ||
| 1st overshoot clamp trigger voltage | Vin_High_clamp_1st | 5.65 | V | SR frequency lower than 7.5KHz | 5 | ||
| 2nd overshoot clamp trigger voltage | Vin_High_clamp_2nd | 6.15 | V | 5 | |||
| Overshoot clamp current at Vin | IVin_High_clamp | 70 | mA | 5 | |||
| MOSFET drain-source breakdown voltage | BVdss | 50 | V | OB2001Z | 5 | ||
| MOSFET on resistance | Rds,on | 8 | mΩ | OB2001Z | 5 | ||
| VDD supply voltage | VDD | 4 | 5.5 | V | 2 | ||
| Vin pin voltage | Vin | -0.6 | 7 | V | 2 | ||
| VDD pin voltage | VDD | -0.6 | 7 | V | 2 | ||
| VD pin voltage | VD | -2.5 | 50 | V | -2.5V applies to minimum duty cycle during normal operation only | 2 | |
| VS pin voltage | VS | -0.6 | 7 | V | 2 | ||
| RT pin voltage | RT | -0.6 | 7 | V | 2 | ||
| Operating junction temperature | TJ | -40 | 150 | ℃ | 2 | ||
| Operating ambient temperature | TA | -20 | 85 | ℃ | 2 | ||
| Storage temperature | Tstg | -55 | 150 | ℃ | 2 | ||
| Lead temperature | 260 | ℃ | Soldering, 10secs | 2 | |||
| Package thermal resistance | RJA | 90 | ℃/W | SOP8 | 2 |
CAD (KiCad official)
- Symbol:
OB2001ZCPA - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
ob2001zcpa-etched.step/ob2001zcpa-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ob2001zcpa.step/ob2001zcpa.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: OB(On-Bright Elec) datasheet (10 pp, sha256
669ac9b843275f0b, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).