component
LD7792NGS1
Public Made by Adomby adom
Leadtrend Tech AC-DC Controllers & Regulators, SOP-16. 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
markdownLD7792NGS1
Leadtrend Tech · AC-DC Controllers & Regulators · SOP-16
LD7792NGS1 from Leadtrend Tech, in a SOP-16. 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 | VCC | power_in | Supply voltage pin. |
| 2 | GND | power_in | Ground. |
| 3 | FBCOMP | input | Voltage feedback pin for the Flyback stage; connect a photo-coupler to close the control loop and achieve regulation. |
| 4 | FBAUX | input | Zero current detection and over voltage protection input for the Flyback unit. |
| 5 | OTP | input | External OTP protection pin. |
| 6 | PFCCOMP | passive | Output of the error amplifier for PFC voltage loop compensation. |
| 7 | PFCONOFF | input | Threshold voltage setting of FBCOMP for PFC ON/OFF loading control. |
| 8 | PFCAUX | input | Zero current detection input for the PFC unit. |
| 9 | VOSENSE | input | Voltage sense for PFC output, regulation voltage is 2.5V. |
| 10 | FBSENSE | input | Current sense pin; connect it to sense the Flyback MOSFET current. |
| 11 | PFCSENSE | input | Current sense pin; connect it to sense the PFC MOSFET current. |
| 12 | PFCDRIVER | output | Gate drive output to drive the external MOSFET for the PFC unit. |
| 13 | FBDRIVER | output | Gate drive output to drive the external MOSFET for the Flyback unit. |
| 14 | CT | passive | Timer setting for Open Loop Protection, PFC light-load turn-off and Flyback soft-start. |
| 15 | NC | unconnected | Unconnected pin. |
| 16 | HV | input | Connect to Bridge + or Line/Neutral of AC/DC mains through a resistor for startup current; turned off when VCC reaches UVLO(on), and detects AC peak voltage for brown in/out and high/low line detection. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Leadtrend Tech |
| Package | SOP-16 |
| Category | Power Supply Chip |
| Pins | 16 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VCC supply voltage | VCC | -0.3 | 35 | V | 5 | ||
| HV pin voltage | HV | -0.3 | 650 | V | 5 | ||
| Signal pins voltage | -0.3 | 6 | V | FBCOMP, PFCCOMP, FBSENSE, PFCSENSE, FBAUX, PFCAUX, VOSENSE, OTP, CT, PFCONOFF | 5 | ||
| Driver pins voltage | -0.3 | 20 | V | FBDRIVER, PFCDRIVER | 5 | ||
| Maximum junction temperature | 150 | °C | 5 | ||||
| Storage temperature range | -65 | 150 | °C | 5 | |||
| Power dissipation | 363 | mW | SOP-16, at Ambient Temperature = 85C | 5 | |||
| Thermal resistance junction-ambient | θJA | 110 | °C/W | SOP-16 | 5 | ||
| Thermal resistance junction-case | θJC | 36 | °C/W | SOP-16 | 5 | ||
| Lead temperature | 260 | °C | Soldering, 10sec | 5 | |||
| ESD HBM pins 3-11 & 14 | 3.5 | kV | Human Body Model | 5 | |||
| ESD HBM pins 1, 12, 13 | 2.5 | kV | Human Body Model | 5 | |||
| ESD HBM pin 16 | 1 | kV | Human Body Model | 5 | |||
| ESD Machine Model | 250 | V | except HV pin | 5 | |||
| Operating junction temperature | -40 | 125 | °C | 5 | |||
| Supply voltage VCC | VCC | 10 | 28 | V | 5 | ||
| VCC capacitor | 10 | 56 | µF | 5 | |||
| HV pin resistor | 10 | 20 | kΩ | 5 | |||
| HV pin capacitor | 220 | pF | 5 | ||||
| PFCCOMP capacitor | 0.22 | 2.2 | µF | 5 | |||
| FBCOMP capacitor | 10 | 100 | nF | 5 | |||
| VOSENSE capacitor | 0.1 | 10 | nF | 5 | |||
| PFCAUX pin resistor | 10 | 51 | kΩ | 5 | |||
| PFCAUX current setting | 1.5 | mA | 5 | ||||
| HV startup current source | IHV1 | 1 | 1.5 | 2 | mA | VCC < PDR, VHV = 80V | 6 |
| HV current VCC > PDR | IHV3 | 5 | mA | VCC > PDR, VHV = 80V | 6 | ||
| HV off-state leakage current | IHVOFF500 | 32 | µA | After UVLO(on), VHV = 500V | 6 | ||
| Brown-in level | VBNI | 95 | 105 | 115 | V | 6 | |
| Brown-out level | VBNO | 75 | 85 | 95 | V | 6 | |
| High line trip level | VHLINE | 215 | 230 | 245 | V | 6 | |
| Low line trip level | VLLINE | 195 | 210 | 225 | V | 6 | |
| High line threshold - low line level | VLINHYS | 10 | 20 | V | 6 | ||
| Holding current before UVLO(on) | IVCCST | 150 | µA | VCC < UVLO (on) | 6 | ||
| VCC latch current | IVCCLCH | 300 | µA | VCC < UVLO (on), VLATCH = 0V | 6 | ||
| Operating current, PFC & Flyback off | IVCCBST | 1.3 | mA | VFBCOMP = 0V, PFC & Flyback OFF | 6 | ||
| Operating current, PFC & Flyback on | IVCC3 | 2 | mA | VFBCOMP = 3V, PFC & Flyback ON | 6 | ||
| UVLO (off) | VUVOFF | 7.5 | 8 | 8.5 | V | -20C ~125C | 6 |
| UVLO (on) | VUVON | 17 | 18 | 19 | V | -20C ~125C | 6 |
| VCC OVP level | VCCOVP | 30.5 | 31.5 | 32.5 | V | 6 | |
| Power down reset voltage | PDR | 6 | 7 | 8 | V | 6 | |
| Source current for PFC OFF threshold | IPFCOFF | 23 | 24.5 | 26 | µA | 6 | |
| OTP pin source current | IOTP | 75 | 80 | 85 | µA | 7 | |
| External OTP turn-on trip level | VOTPON | 1.05 | 1.1 | 1.15 | V | 7 | |
| External OTP turn-off trip level | VOTPOFF | 0.9 | 1 | 1.1 | V | 7 | |
| OTP pin de-bounce time | TDOTPOFF | 400 | 500 | 600 | µs | Disable (High to Low) | 7 |
| Reference input voltage | VFBREF | 2.47 | 2.5 | 2.53 | V | TJ=-20C ~125C | 7 |
| PFC OVP trip level | VPFCOVP | 2.59 | 2.63 | 2.67 | V | 7 | |
| PFC OVP hysteresis | VPFCOVPHYS | 0.115 | 0.13 | 0.145 | V | 7 | |
| PFC enable threshold | VPFCEN | 1 | 1.1 | 1.2 | V | 7 | |
| PFC disable threshold | VPFCENL | 0.8 | 0.9 | 1 | V | 7 | |
| VOSENSE pull down resistance | RVOSENSE | 5 | 6 | 7 | MΩ | 7 | |
| Output low level | VOUTH1 | 0 | 1.5 | V | VCC=15V, ISINK=100mA | 10 | |
| Output high clamp level | VOUTCL | 11 | 13 | 15 | V | VCC=17V | 10 |
| Rising time | TOUTR | 200 | ns | VCC =15V,CL=3000pF | 10 | ||
| Falling time | TOUTF | 50 | ns | VCC =15V,CL=3000pF | 10 | ||
| OTP level | TSHUTDOWN | 140 | °C | 10 | |||
| OTP hysteresis | TRESTART | 40 | °C | 10 |
CAD (KiCad official)
- Symbol:
LD7792NGS1 - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files:
ld7792ngs1-etched.step/ld7792ngs1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ld7792ngs1.step/ld7792ngs1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Leadtrend Tech datasheet (29 pp, sha256
5a1cbbd6cc4d0484, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).