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OB2269CAP

Public Made by Adom

by adom

OB On Bright Elec AC-DC Controllers And Regulators, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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OB2269CAP

OB On Bright Elec · AC-DC Controllers And Regulators · DIP-8

OB2269CAP from OB On Bright Elec, in a DIP-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 GND power_in Ground reference pin for the controller.
2 FB input Feedback input whose voltage, together with the current-sense level at pin 6, sets the PWM duty cycle; the datasheet gives a 1.7 V burst-mode threshold and a 4.4 V power-limit threshold for this pin.
3 VIN power_in Connects through a large-value resistor to the rectified line input for startup IC supply and line voltage sensing.
4 RI input Oscillator frequency setting pin; a resistor between RI and GND sets the PWM frequency, with a recommended RI range of 24 to 31 kΩ.
5 RT input Temperature sensing input connected through an NTC resistor (in series with a regular resistor) to GND, with the OTP threshold at 1.065 V typical.
6 SENSE input Current sense input connected to the MOSFET current-sensing resistor node, with 250 ns leading-edge blanking and a 0.90 V typical current-limit threshold.
7 VDD power_in DC power supply pin with a recommended supply range of 12 V to 23 V and a 35 V zener clamp.
8 GATE output Totem-pole gate drive output for the external power MOSFET, clamped at 18 V.

Key specifications

Parameter Value
Manufacturer OB On Bright Elec
Package DIP-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
VDD Supply Voltage VDD 12 23 V 4
RI Resistor Value RI 24 31 Kohm 4
Operating Ambient Temperature TA -20 85 °C 4
Min/Max Operating Junction Temperature TJ -20 150 °C 2
Min/Max Storage Temperature Tstg -55 150 °C 2
VDD/VIN DC Supply Voltage 30 V DC 2
VDD Clamp Continuous Current 10 mA 2
FB Input Voltage -0.3 7 V 2
Sense Input Voltage -0.3 7 V 2
RT Input Voltage -0.3 7 V 2
RI Input Voltage -0.3 7 V 2
Lead Temperature (Soldering) 260 °C Soldering, 10secs 2
VDD Start up Current I_VDD_Startup 6.5 20 uA VDD =15V, Measure current into VDD 5
VDD Under Voltage Lockout Enter UVLO(Enter) 9.5 10.5 11.5 V 5
VDD Under Voltage Lockout Exit (Startup) UVLO(Exit) 15.5 16.5 17.5 V 5
VDD Over Voltage Protection Enter OVP(ON) 23.5 25 26.5 V 5
VDD Over Voltage Protection Exit (Recovery) OVP(OFF) 21.5 23 24.5 V 5
Current Limiting Threshold at No Compensation VTH_OC_0 0.85 0.9 0.95 V I(VIN) = 0uA 6
OTP Threshold Voltage VTH_OTP 1.015 1.065 1.115 V 6
Normal Oscillation Frequency FOSC 60 65 70 KHZ 6
Operating RI Range RI_range 12 24 60 Kohm 6
Maximum Duty Cycle DC_max 75 80 85 % 6
Minimum Duty Cycle DC_min 0 % 6
Frequency Modulation range / Base frequency ∆f_OSC -3 3 % 6
Operation Current I_VDD_Operation 2.3 mA VFB=3V 5
OVP Hysteresis OVP_Hys 2 V OVP(ON)-OVP(OFF) 5
VDD OVP Debounce time TD_OVP 80 uSec 5
VDD Zener Clamp Voltage VDD_Clamp 35 V I(VDD ) = 5mA 5
PWM Input Gain AVCS 2.8 V/V 5
VFB Open Voltage VFB_Open 5.9 V 5
FB pin short circuit current IFB_Short 0.8 mA Short FB pin to GND, measure current 5
Zero Duty Cycle FB Threshold Voltage VTH_0D 0.95 V 5
Burst Mode FB Threshold Voltage VTH_BM 1.7 V 5
Power Limiting FB Threshold Voltage VTH_PL 4.4 V 5
Power limiting Debounce Time TD_PL 80 mSec 5
Input Impedance (FB) ZFB_IN 7.2 Kohm 5
Sense Input Leading Edge Blanking Time T_blanking 250 nS 5
Sense Input Impedance ZSENSE_IN 30 Kohm 5
Over Current Detection and Control Delay TD_OC 120 nSec CL=1nf at GATE 6
Current Limiting Threshold at Compensation VTH_OC_1 0.81 V I(VIN) = 150uA 6
Frequency Temperature Stability ∆f_Temp 2 % -20oC to 100oC 6
Frequency Voltage Stability ∆f_VDD 2 % VDD = 12-25V 6
RI open voltage V_RI_open 2 V 6
Burst Mode Base Frequency F_BM 22 KHZ 6
Output Low Level VOL 0.3 V Io = -20 mA 6
Output High Level VOH 11 V Io = +20 mA 6
Output Clamp Voltage Level VG_Clamp 18 V VDD=20V 6
Output Rising Time T_r 120 nSec CL = 1nf 6
Output Falling Time T_f 50 nSec CL = 1nf 6
Output Current of RT pin I_RT 70 uA 6
OTP Recovery Threshold Voltage VTH_OTP_off 1.165 V 6
OTP De-bounce Time TD_OTP 100 uSec 6
RT Pin Open Voltage V_RT_Open 3.5 V 6
Shuffling Frequency Freq_Shuffling 32 HZ RI = 24Kohm 6
Package Thermal Resistance RθJA (DIP8) RθJA 90 °C/W DIP8 package 2

CAD (KiCad official)

  • Symbol: OB2269CAP
  • Footprint: Package_DIP:DIP-8_W7.62mm
  • 3D model: DIP-8 (KiCad packages3D, STEP)
  • 3D model files: ob2269cap-etched.step / ob2269cap-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ob2269cap.step / ob2269cap.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: OB On Bright Elec datasheet (13 pp, sha256 c1046cbc40cf5dc8, retrieved 2026-10-16, 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