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BL8072CLTR33

Public Made by Adom

by adom

BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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BL8072CLTR33

BL Shanghai Belling · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-3

BL8072CLTR33 from BL Shanghai Belling, in a SOT-223-3. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 Vss/ADJ power_in Ground / adjust pin. Tie to GND for fixed-voltage operation. In adjustable mode, connect the mid-point of the external resistor divider (R1 to Vout, R2 to GND) here to set Vout = Vref × (1 + R2/R1). Adjust pin current I_ADJ is typically ~2 µA. R1 is normally 1 kΩ-10 kΩ; a 0.1 µF ceramic bypass cap between this pin and GND improves ripple rejection.
2 VOUT power_out Regulated output. Delivers up to 2 A within ±2% of the nominal set voltage (customized 1.2V-5.0V in 0.1V steps; this suffix -33 => 3.3V). A 1 µF ceramic output capacitor to GND is required for stability. Typical dropout is 850 mV at 1.5 A for Vout ≥ 2.0V.
3 VDD power_in Unregulated input supply. Recommended operating range up to 18V (absolute max 20V). Requires a 1 µF ceramic bypass capacitor to GND placed close to the pin. Input must exceed Vout by at least the dropout voltage to maintain regulation.

Key specifications

Parameter Value
Manufacturer BL Shanghai Belling
Package SOT-223-3
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • BL8072CLTR33
  • BL8072CLTR33COTR

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input Voltage Vin 18 V 3
Maximum Output Current Iout(Max.) 2 A Vin-Vout=1V, Vout≥2.0V (shared 2 A value; relational symbols lost in extraction) 3
Dropout Voltage 850 950 mV Iout=1.5A, Vout≥2.0V (relational symbols lost in extraction) 3
Line Regulation 0.1 0.3 %/V Iout=10mA; Set Vout+1V≤Vin≤18V 3
Load Regulation 10 30 mV 1mA≤Iout≤1.5A, Vout≥2.0V 3
Quiescent Current Iq 3 5 uA Vin=Set Vout+1V 3
Output Voltage Temperature Coefficient 200 ppm/C Iout=100mA 3
Output Voltage Accuracy -2 2 % Default accuracy (no accuracy suffix in MPN) 2
Max Input Voltage 20 V 2
Operating Junction Temperature Tj 125 C 2
Ambient Temperature Ta -40 85 C 2
Storage Temperature Ts -40 150 C 2
Lead Temperature & Time 260 C 10 S 2
Input Voltage Range (recommended) 18 V 2
Ambient Temperature (recommended) -40 85 C 2
Thermal Resistance junction to case (SOT-223) θJC 20 C / W Junction to case, SOT-223 package 3
Package Thermal Resistance (SOT-223) 20 C / W Listed in Absolute Maximum Rating table; reference point not stated 2

CAD (KiCad official)

  • Symbol: BL8072CLTR33
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223-3 (KiCad packages3D, STEP)
  • 3D model files: bl8072cltr33-etched.step / bl8072cltr33-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl8072cltr33.step / bl8072cltr33.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
bl8072cltr33.step 64 KB You want the bare part, or you mark your own boards.
bl8072cltr33-etched.step 2.4 MB You want the part with BL8072CLTR33 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 568 faces against 75 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: BL Shanghai Belling datasheet (7 pp, sha256 48a7d46f1c8be9ee, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF