component
XL2845
Public Made by Adomby adom
XINLUDA AC-DC Controllers And 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
markdownXL2845
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xl2845.step/xl2845.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).