component

LD7830GR

Public Made by Adom

by adom

Leadtrend Tech LED Drivers, SOP-7. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LD7830GR

Leadtrend Tech · LED Drivers · SOP-7

LD7830GR from Leadtrend Tech, in a SOP-7. 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 ZCD input Quasi-resonant zero-current detector input and programmable maximum ON-time setting, where the ZCD pin falling to 0.1V turns on the MOSFET and the ZCD resistor sets the maximum ON-time.
2 COMP input Feedback pin that connects to a photo-coupler to close the control loop for regulation, where COMP falling below 0.8V shuts down the drive output and COMP reaching 4.8V trips OLP.
3 CS input Current sense input for the MOSFET current used for pulse-by-pulse OCP, with a maximum threshold of 0.5V and a negative turn-on spike that should not exceed -0.3V.
4 GND power_in Ground reference pin for the controller.
5 OUT output Gate drive output for the external power MOSFET, with typical 500mA/-800mA drive capability and output clamped at 13V.
6 VCC power_in Supply pin for the controller, with UVLO on at 16V and off at 7.5V, and VCC over-voltage protection at 26V typical with a VCC rating below 29V.
8 HV power_in High-voltage startup pin connected to the positive terminal of the main bulk capacitor, rated 600V, which turns off its internal current source once VCC is above UVLO on.

Key specifications

Parameter Value
Manufacturer Leadtrend Tech
Package SOP-7
Category Display Modules / LED Drivers / Display Drivers
Pins 7

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 -0.3 30 V 4
High voltage pin HV HV -0.3 600 V 4
OUT pin voltage OUT -0.3 V upper limit printed as VCC +0.3V 4
COMP, CS, ZCD pin voltage -0.3 6 V 4
Maximum Junction Temperature 150 C 4
Operating Junction Temperature Range -40 125 C 4
Operating Ambient Temperature Range -40 85 C 4
Storage Temperature Range -65 150 C 4
Power Dissipation (SOP-8, SOP-7, at Ambient Temperature = 85C) 250 mW Ambient temperature = 85C 4
ESD Voltage Protection, Human Body Model (except HV pin) 2.5 KV Human Body Model, except HV pin 4
ESD Voltage Protection, Machine Model 250 V Machine Model 4
ESD Voltage Protection, Human Body Model (HV pin only) 1 KV Human Body Model, HV pin only 4
Lead temperature (Soldering, 10sec) 260 C Soldering, 10 sec 4
Vcc pin capacitor 4.7 47 F 4
Comp pin capacitor 1 10 F 4
High-voltage current Source 1 1.3 1.6 mA VCC=4V, HV=80V 5
High-voltage current Source 2.6 3.1 3.6 mA VCC=9V, HV=80V 5
Off-state Leakage current 35 A VCC>UVLO(ON), HV=500V 5
Startup Current 55 75 95 A VCC<UVLO ON 5
UVLO (OFF) 6.9 7.5 8.1 V 5
UVLO (ON) 15 16 17 V 5
HV Self Bias (Linear Regulator) 8.1 8.8 9.5 V 5
De-Latch VCC Voltage PDR (Power Down Reset) 6 6.5 7 V 5
VCC OVP Level 25 26 27 V 5
Short circuit current 0.4 0.5 0.6 mA VCOMP=0 5
Open loop voltage 5 5.3 5.8 V 5
OLP Trip Level 4.65 4.8 4.95 V 5
Current Sense Input Threshold Voltage 0.47 0.5 0.53 V IZCD<110A 5
Current Sense Input Threshold Voltage 0.322 0.35 0.378 V IZCD>440A 5
Input bias current 1.5 A VCS=0V~0.5V 5
LEB time 240 300 360 ns 5
Upper Clamp Voltage 5 5.6 6 V IDET=100A 6
Lower Clamp Voltage -0.35 V IDET=-2mA 6
Input Voltage Threshold 0.05 0.1 0.15 V 6
Hysteresis (ZCD) 0.05 0.15 0.2 V 6
Input bias current (ZCD) 1 A VZCD=1V~4V, OUT=OFF 6
Programming Maximum ON-time (ZCD Pin) 4.8 5.82 6.8 s RZCD=6k 6
Maximum ON-time ZCD 13.6 16 18.4 s RZCD34k 6
Minimum (ON+OFF)-Time 3.2 4 4.8 s Fmax(250kHz) 6
Minimum OFF-Time 1.2 1.6 2 s 6
Output Low Level 0.5 V VCC=15V, ISINK=20mA 6
Output High Level 10 V VCC=15V, ISOURCE=20mA 6
Rising Time 75 150 ns VCC=15V, CL=1000pF 6
Falling Time 25 50 ns VCC=15V, CL=1000pF 6
Start Timer Period 100 150 200 s 6
OTP Trip level 140 C guaranteed by design only 6
OTP Hysteresis 30 C guaranteed by design only 6
OLP Delay Time 225 270 315 ms 5
Operating Current (with 1nF load on OUT pin) 1 mA VCOMP=0V, ZCD=0 5
Operating Current (with 1nF load on OUT pin) 1.45 mA VCOMP=3V, ZCD=0 5
Operating Current (with 1nF load on OUT pin), VCC OVP 0.3 mA VCC OVP 5
Operating Current (with 1nF load on OUT pin), OLP 0.3 mA OLP 5
Zero ON-time Threshold 0.8 V 5
Zero ON-time Hysteresis 25 mV 5
OLP De-Latch Counter 4 Cycle 5
Soft Start Time 8 ms 5
Package Thermal Resistance (SOP-8, SOP-7 JA) JA 160 C/W 4

CAD (KiCad official)

  • Symbol: LD7830GR
  • Footprint: Package_SO:SOIC-8-N7_3.9x4.9mm_P1.27mm
  • 3D model: SOP-7 (KiCad packages3D, STEP)
  • 3D model files: ld7830gr-etched.step / ld7830gr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ld7830gr.step / ld7830gr.glb are the bare package body.

Provenance

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

  • Datasheet: Leadtrend Tech datasheet (18 pp, sha256 ed91d839f07b0cf6, retrieved 2026-10-27, 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