component

OB2633MP

Public Made by Adom

by adom

OB On Bright Elec AC-DC Controllers And Regulators, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)ob2633mpfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 2h ago
viewers ob2633mp: viewers · Ray 2h ago
ob2633mp-etched.glb Publish 0.1.0 · Ray 2h ago
ob2633mp-etched.step ob2633mp: factory component page (tier=lcsc) · Ray 2h ago
ob2633mp-hero.glb ob2633mp: hero GLB from the etched model (keeps the MPN mark) · Ray 2h ago
ob2633mp-hero.overlay.json Publish 0.1.0 · Ray 2h ago
ob2633mp.glb Publish 0.1.0 · Ray 2h ago
ob2633mp.kicad_mod Publish 0.1.0 · Ray 2h ago
ob2633mp.kicad_sym Publish 0.1.0 · Ray 2h ago
ob2633mp.lbr Publish 0.1.0 · Ray 2h ago
ob2633mp.step Publish 0.1.0 · Ray 2h ago
package.json Publish 0.1.0 · Ray 2h ago
page.json Set visibility: public · Ray 2h ago
README.md Publish 0.1.0 · Ray 2h ago

OB2633MP

OB On Bright Elec · AC-DC Controllers And Regulators · SOT-23-6

OB2633MP from OB On Bright Elec, 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 GND power_in Ground reference pin for the controller; the datasheet gives no further electrical limits for this pin.
2 FB input Feedback input whose voltage, together with the CS current-sense signal, sets the PWM duty cycle; absolute maximum input voltage range is -0.3 V to 7 V.
3 PRT input Multifunction pin for external NTC over-temperature detection to ground, resistor-set IOVP/ISCP/IUVP trigger currents with transformer demagnetization sensing from Vaux, and a diode is recommended between PRT and the NTC if all protections are needed; absolute maximum input voltage range is -0.3 V to 7 V.
4 CS input Current sense input for the switch current, with the cycle-by-cycle current limit threshold between 0.55 V and 0.83 V and absolute maximum input voltage range of -0.3 V to 7 V.
5 VCC power_in Power supply pin with recommended supply range 12 V to 48 V, absolute maximum DC supply of 54 V, and VDD over-voltage protection at 52.5 V.
6 Gate output Totem-pole gate driver output for the power MOSFET, with a typical output high level of 8 V and output clamp voltage of 11.5 V.

Key specifications

Parameter Value
Manufacturer OB On Bright Elec
Package SOT-23-6
Category Power Management (PMIC)
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
VDD Under Voltage Lockout Exit (Recovery) UVLO(OFF) 15.5 16.5 17.5 V 5
IRT Output current for external OTP detection IRT 114 120 126 uA 6
Threshold voltage for external OTP VOTP 1.14 1.2 1.26 V 6
Frequency jittering of average clamp fmax_QR ∆f_OSC_QR -11 11 % 6
Frequency jittering of clamp fmin_CCM ∆f_OSC_CCM -6.5 6.5 % 6
Normal Operation Current I_VDD_Operation 2.8 3.2 mA VFB=3V, CL=1nF 5
Burst Operation Current I_VDD_Burst 0.4 0.5 mA VFB=0.5V, CL=1nF 5
VDD Start up Current Istartup 5 20 uA VDD=UVLO(OFF)-1V, measure leakage current into VDD 5
VCC Supply Voltage (recommended operating range) VCC 12 48 V 2
DC Supply Voltage VCC 54 V 2
FB Input Voltage FB -0.3 7 V 2
CS Input Voltage CS -0.3 7 V 2
PRT Input Voltage PRT -0.3 7 V 2
Min/Max Operating Junction Temperature TJ -40 150 ℃ 2
Operating Ambient Temperature TA -20 85 ℃ 2
Min/Max Storage Temperature Tstg -55 150 ℃ 2
Lead Temperature (Soldering) 260 ℃ 10 secs 2
Package thermal resistance junction-to-ambient RJA 200 ℃/W SOT23-6 package dissipation rating 2
VDD Under Voltage Lockout Enter UVLO(ON) 7.2 V 5
Pull-up PMOS active Vpull-up 10 V 5
Over voltage protection voltage VOVP 52.5 V FB=3V, ramp up VDD until gate clock is off 5
VFB Open Loop Voltage VFB_Open 5.1 V 5
PWM input gain ∆VFB/∆VCS Avcs 3.5 V/V Iovp>96uA with Hysteresis 5
PWM input gain ∆VFB/∆VCS Avcs 4.5 V/V Iovp<90uA with Hysteresis 5
Max Ton time Ton_max 12 us VDD=18V, VFB=3V, VCS=0.3V 5
The threshold enter green mode Vref_green 2.2 V 5
The threshold exit burst mode Vref_burst_H 1.25 V 5
The threshold enter burst mode Vref_burst_L 1.15 V 5
FB pin short circuit current IFB_Short 210 uA Short FB pin to GND and measure current 5
Input Impedance ZFB_IN 25 KΩ 5
The open loop FB Threshold Voltage VTH_Openloop 4.5 V 5
The open loop protection debounce Time TD_Openloop 40 ms 5
Soft start time of CS threshold SST_CS 4 ms 5
Leading edge blanking time T_blanking 250 ns 5
Over Current Detection and Control Delay TD_OC 90 ns From over current occurs till the gate driver output starts to turn off 5
Internal current limiting threshold Vth_OCP_min 0.55 V @ Zero switching on time 5
Internal current limiting threshold Vth_OCP_max 0.83 V @ Max. switching on time 5
Average max clamp oscillation frequency in QR mode Fosc_max_QR 75 KHz VDD=15V, FB=3V 6
Min clamp oscillation frequency in CCM mode Fosc_min_CCM 55 KHz VDD=15V, FB=3V 6
Shuffling frequency clamp fmin_CCM F_shuffling_CCM 60 Hz 6
Frequency Temperature Stability ∆f_Temp 1 % 6
Frequency Voltage Stability ∆f_VDD 1 % 6
Burst Mode Switch Frequency F_Burst 22 KHz 6
Output low level VOL 1 V VDD=15V, Io=20mA 6
Output high level VOH 8 V VDD=18V, Io=20mA 6
Output clamp voltage V_clamping 11.5 V 6
Output rising time T_r 140 ns 1.2V ~ 10.8V @ CL=1000pF 6
Output falling time T_f 55 ns 10.8V ~ 1.2V @ CL=1000pF 6
Output bias current expect during OVP detection Ibias 30 uA 6
EX OTP debounce time Td_ex_OTP 60 Cycles 6
Current threshold for adjustable output OVP Ioutput_ovp 90 uA When T_start<30ms 6
Current threshold for adjustable output OVP Ioutput_ovp 216 uA When T_start>30ms 6
Output OVP debounce time Td_output_ovp 8 Cycles 6
SCP threshold Iscp 24 uA 6
SCP detect after startup Td_scp 7.5 ms 6
UVP threshold Iuvp 40 uA 6
UVP detect after startup Td_uvp 15 ms 6
On Chip OTP Level 155 ℃ 6
On Chip OTP exit 125 ℃ 6

CAD (KiCad official)

  • Symbol: OB2633MP
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: ob2633mp-etched.step / ob2633mp-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ob2633mp.step / ob2633mp.glb are the bare package body.

Provenance

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

  • Datasheet: OB On Bright Elec datasheet (14 pp, sha256 103ad63da236050f, retrieved 2026-10-17, 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