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XL2845

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XINLUDA AC-DC Controllers And Regulators, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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XL2845

XINLUDA · AC-DC Controllers And Regulators · SOP-8

XL2845 from XINLUDA, 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 COMP output This pin is the Error Amplifier output and is made available for loop compensation, with the datasheet giving an Error Amplifier output sink current limit of 10 mA.
2 VFB input This is the inverting input of the Error Amplifier, normally connected to the switching power supply output through a resistor divider, with a recommended input voltage of 2.5 V and absolute maximum analog input range of -0.3 V to 5.5 V.
3 ISENSE input A voltage proportional to inductor current is connected to this input and used by the PWM to terminate output switch conduction, with a recommended input voltage of 1 V and absolute maximum analog input range of -0.3 V to 5.5 V.
4 RT/CT passive Resistor RT is connected to Vref and capacitor CT to ground to program the oscillator frequency and maximum output duty cycle, with operation to 500 kHz possible.
5 GROUND power_in This pin is the combined control circuitry and power ground, and all voltages in the datasheet are referenced to it.
6 OUTPUT output This output directly drives the gate of a power MOSFET, with peak currents up to 1 A sourced and sunk by this pin and an absolute maximum output current of 1 A.
7 VCC power_in This pin is the positive supply of the control IC, with a recommended supply voltage of 12 V to 28 V and an absolute maximum supply voltage of 30 V for a low impedance source.
8 VREF power_out This is the reference output, providing charging current for capacitor CT through resistor RT, with a recommended reference output current of -20 mA and a 5.0 V nominal reference voltage.

Key specifications

Parameter Value
Manufacturer XINLUDA
Package SOP-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
Supply voltage (VCC) VCC 12 28 V 4
Input voltage (VFB) VFB 2.5 V 4
Input voltage (ISENSE) VISENSE 1 V 4
Supply current, externally limited IVCC 25 mA Externally limited 4
Average output current IOUTPUT 200 mA 4
Reference output current IVREF -20 mA 4
Oscillator frequency fOSC 100 500 kHz 4
Operating free-air temperature (284x) TA -25 85 °C 284x 4
Supply Voltage (low impedance source) Vi 30 V 4
Output Current IO 1 A 4
Output Energy (capacitive load) EO 5 J 4
Analog Inputs (pins 2, 3) -0.3 5.5 V 4
Error Amplifier Output Sink Current 10 mA 4
Power Dissipation (SO8) Ptot 800 mW Tamb = 25°C 4
Storage Temperature Range Tstg -65 150 °C 4
Junction Operating Temperature TJ -40 150 °C 4
Lead Temperature (soldering 10s) TL 300 °C Soldering 10s 4
Thermal Resistance Junction-ambient (SOP8) Rth j-amb 150 °C/W Junction-ambient, SOP8 column 4
Reference Output Voltage VREF 4.95 5 5.05 V Tj = 25°C, Io = 1mA 5
Reference Line Regulation VREF 8 20 mV 12V ≤ Vi ≤ 25V 5
Reference Load Regulation VREF 8 25 mV 1 ≤ Io ≤ 20mA 5
Total Output Variation (line, load, temperature) 4.9 5.1 V Line, load, temperature 5
Long Term Stability 7 30 mV Tamb = 125°C, 1000Hrs 5
Output Short Circuit Current ISC -30 -100 -180 mA 5
Initial accuracy fOSC 38 52 65 KHz Tj = 25°C 5
Frequency change with voltage fOSC/V 0.6 5 % VCC = 12V to 25V 5
Discharge Current Idischg 7.8 8.3 8.8 mA VOSC = 2V, TJ = 25°C 5
Discharge Current Idischg 7.5 8.8 mA VOSC = 2V, TA = Tlow to Thigh 5
Input Voltage V2 2.45 2.5 2.55 V VPIN1 = 2.5V 5
Input Bias Current Ib -0.1 -1 µA VFB = 5V 5
Open Loop Gain AVOL 65 90 dB 2V ≤ Vo ≤ 4V 5
Unity Gain Bandwidth BW 0.7 1 MHz TJ = 25°C 5
Power Supply Rejection Ratio PSRR 60 70 dB 12V ≤ Vi ≤ 25V 5
Output Sink Current Io 2 6 mA VPIN2 = 2.7V, VPIN1 = 1.1V 5
Output Source Current Io -0.5 -1 mA VPIN2 = 2.3V, VPIN1 = 5V 5
VOUT High 5 6.2 V VPIN2 = 2.3V; RL = 15K to Ground 5
VOUT Low 0.8 1.1 V VPIN2 = 2.7V; RL = 15K to Pin 8 5
Gain GV 2.85 3 3.15 V/V Note 3 & 4 5
Maximum Input Signal V3 0.9 1 1.1 V VPIN1 = 5V (note 3) 5
Input Bias Current (current sense) Ib -2 -10 µA 5
Delay to Output 150 300 ns 5
Output Low Level VOL 0.1 0.4 V ISINK = 20mA 6
Output Low Level VOL 1.6 2.2 V ISINK = 200mA 6
Output High Level VOH 13 13.5 V ISOURCE = 20mA 6
Output High Level VOH 12 13.5 V ISOURCE = 200mA 6
UVLO Saturation VOLS 0.1 1.1 V VCC = 6V; ISINK = 1mA 6
Rise Time tr 50 150 ns Tj = 25C, CL = 1nF 6
Fall Time tf 50 150 ns Tj = 25C, CL = 1nF 6
Start Threshold 7.8 8.4 9 V X843/5 6
Min Operating Voltage After Turn-on 7 7.6 8.2 V X843/5 6
Maximum Duty Cycle 43 48 50 % X844/5 6
Start-up Current Ist 0.3 0.5 mA VCC = 6.5V for X843/45 6
Operating Supply Current Ii 12 20 mA VPIN2 = VPIN3 = 0V 6
Zener Voltage Viz 30 34 V Ii = 25mA 6

CAD (KiCad official)

  • Symbol: XL2845
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: xl2845-etched.step / xl2845-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); xl2845.step / xl2845.glb are the bare package body.

Provenance

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

  • Datasheet: XINLUDA datasheet (17 pp, sha256 423afa5ce5df5828, retrieved 2026-10-19, 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