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Generated by kicad-footprint-generator · KiCad file format 20260206

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LD8115AGS

Leadtrend Tech · LED Drivers · SOP-8

LD8115AGS from Leadtrend Tech, 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	VCC	power_in	Power supply to the IC, which needs a small 0.1µF bypass capacitor to GND placed as close to the IC as possible; the recommended VCC range is 3.6V to 38V with an absolute maximum of 40V.
2	GND	power_in	Ground, which should be tied as close as possible to the converter's output ground terminal to minimize load-current effects on the voltage regulation set point.
3	OUT	output	Open-collector gate drive output that drives the opto-coupler through a limit resistor to send the error signal to the primary side; absolute maximum is 60V with a maximum sink current of 30mA.
4	ISEN	input	Current-sense input, the inverting input of the current-loop op-amp, tied to the end of the current sense resistor through a decoupling resistor, with a threshold of 200mV at maximum current and an absolute maximum of 6V.
5	VSEN	input	Voltage-sense input, the inverting input of the internal op-amp, connected to the mid-point of the output voltage divider with a 1.25V (±1%) reference threshold and an absolute maximum of 6V.
6	DCDIM	input	DC-level brightness input for analog dimming (about 2.5V gives maximum LED current), or a 0.1µF to 1µF filter capacitor pin when PWM dimming is used, with an absolute maximum of 16V.
7	ADIM	input	PWM brightness control input operating at 500Hz to 30kHz with logic thresholds of 2.6V high and 0.5V low, which must be connected to GND in analog dimming mode and has an absolute maximum of 16V.
8	VREF	power_out	Internal linear regulator output of 3.2V typical (3.04V to 3.36V) that requires an external ceramic capacitor of 1µF to 2.2µF and supplies at most 10mA.

Key specifications

Parameter	Value
Manufacturer	Leadtrend Tech
Package	SOP-8
Category	LED Drivers
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
UVLO(OFF) threshold VCC	VCC_OFF	2.5	2.7	2.9	V		5
UVLO(ON) threshold VCC	VCC_ON	2.8	3	3.2	V		5
Operation current	IVCC	350		500	A	VISEN = VOVP= 5V, VDCDIM = 0V, OUT Pull Low	5
Output low level	VOUTL	200		400	mV	@2mA sink current	5
Reference voltage (VREF pin)	VREF	3.04	3.2	3.36	V	IREF≤3mA	5
VREF maximum output current	IREF			10	mA		5
Maximum LED current threshold at DIM pin	VDIM_MAX			2.6	V	VOVP = 0V, VISEN =200mV+/-4mV	5
ADIM H threshold voltage	ADIMH	2.6			V		5
ADIM L threshold voltage	ADIML			0.5	V		5
ADIM input resistor	RADIM	300		600	K		5
Dimming mode selector time	TADIM_OFF	20		60	ms		5
Maximum LED current sense threshold voltage	VISEN	196	200	204	mV	VOVP = 0V, DCDIM =3.2V	5
Minimum LED current sense reference voltage	VISEN_0	2		4	mV	VOVP = 0V, When VDCDIM =0V Or VADIM=0V	5
Current loop input bias current	ICC_BIAS			20	nA		5
Voltage control loop threshold voltage	VVSEN	1.237	1.25	1.263	V	VISEN = 0V	6
Voltage loop input bias current	ICV_BIAS			20	nA		6
OTP hysteresis			30		C		6
OTP trip level			135		C		6
Internal filter resistance	RFILTER		1000		K		5
Internal discharge resistance	RFILTER		5		K	When VADIM is Changed from 3V to 0V and de-bounce TADM_OFF	5
DCDIM discharge resistor	RDCDIS		5		K	When ADIM signal from high to low and TADIM_OFF > 60ms	5
Operating junction temperature		-40		125	C		4
Supply VCC voltage	VCC	3.6		38	V		4
Maximum LED voltage				58	V		4
VCC pin capacitor		0.1		4.7	F		4
VREF pin capacitor		1		2.2	F		4
DCDIM pin capacitor		0.1		1	F	Use PWM input to ADIM pin	4
ADIM acceptable frequency range		500		30	Hz (max printed 30K)		4
VCC supply voltage	VCC	-0.3		40	V		4
OUT pin voltage	OUT	-0.3		60	V		4
ADIM, DCDIM pin voltage		-0.3		16	V		4
VSEN, VREF, ISEN pin voltage		-0.3		6	V		4
OUT maximum sink current				30	mA		4
Maximum junction temperature				150	C		4
Storage temperature range		-65		150	C		4
Power dissipation (SOP-8)				250	mW	Ambient Temperature = 85C	4
Lead temperature (soldering)				260	C	Soldering, 10sec	4
ESD voltage protection, Human Body Model				2	KV	Human Body Model	4
ESD voltage protection, Machine Model				200	V	Machine Model	4
Package thermal resistance (SOP-8, JA)	JA		160		C/W		4

CAD (KiCad official)

Symbol: LD8115AGS
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)
3D model files: ld8115ags-etched.step / ld8115ags-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ld8115ags.step / ld8115ags.glb are the bare package body.

Provenance

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

Datasheet: Leadtrend Tech datasheet (12 pp, sha256 03ff5fa1e7c1230c, retrieved 2026-10-18, 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