LM2594HVN-ADJ from Texas Instruments, in a PDIP-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	NC	unconnected	No internal connection is made to this pin.
2	NC	unconnected	No internal connection is made to this pin.
3	NC	unconnected	No internal connection is made to this pin.
4	Feedback	input	Senses the regulated output voltage to complete the feedback loop, with the Feedback pin voltage limited to −0.3 V to 25 V.
5	ON/OFF	input	Pulling this pin below about 1.3 V turns the regulator on and pulling it above 1.3 V (up to a maximum of 25 V) shuts it down, and leaving it open or tying it to ground keeps the regulator on.
6	Ground	power_in	Circuit ground for the IC.
7	+VIN	power_in	Positive input supply for the switching regulator, rated 4.5 V to 60 V for the LM2594HV, and it needs a suitable input bypass capacitor.
8	Output	output	Internal switch output that swings between (+VIN − VSAT) and approximately −0.5 V, and its PCB copper area must be kept to a minimum.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	PDIP-8
Category	Power Management ICs
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				60	V	LM2594HV	4
ON/OFF pin input voltage		-0.3		25	V		4
Feedback pin voltage		-0.3		25	V		4
Output voltage to ground (steady state)		-1			V	steady state	4
Lead temperature (P package soldering, 10 s)				260	°C	P package soldering, 10 s	4
Maximum junction temperature				150	°C		4
Storage temperature	Tstg	-65		150	°C		4
ESD human-body model	V(ESD)	-2000		2000	V	Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001	4
Supply voltage		4.5		60	V	LM2594HV	4
Temperature		-40		125	°C		4
Junction-to-ambient thermal resistance	RθJA		95		°C/W	P (PDIP) 8 pins, simulated on 4-layer JEDEC board	4
Feedback voltage	VFB	1.193	1.23	1.267	V	4.5 V ≤ VIN ≤ VINmax, 0.1 A ≤ ILOAD ≤ 0.5 A, VOUT programmed for 3 V, Circuit of Figure 35, TJ = 25°C	6
Feedback voltage	VFB	1.18		1.28	V	4.5 V ≤ VIN ≤ VINmax, 0.1 A ≤ ILOAD ≤ 0.5 A, VOUT programmed for 3 V, Circuit of Figure 35, over full operating temperature range	6
Feedback bias current	Ib		10	50	nA	Adjustable version only, VFB = 1.3 V, TJ = 25°C	6
Feedback bias current	Ib			100	nA	Adjustable version only, VFB = 1.3 V, over full operating temperature range	6
Oscillator frequency	fO	127	150	173	kHz	See(3), TJ = 25°C	6
Oscillator frequency	fO	110		173	kHz	See(3), over full operating temperature range	6
Saturation voltage	VSAT		0.9	1.1	V	IOUT = 0.5 A, (4)(5), TJ = 25°C	6
Saturation voltage	VSAT			1.2	V	IOUT = 0.5 A, (4)(5), over full operating temperature range	6
Max duty cycle (ON)	DC			100	%	See(5)	6
Min duty cycle (OFF)	DC	0			%	See(6)	6
Current limit	ICL	0.65	0.8	1.3	A	Peak current(4)(5), TJ = 25°C	6
Current limit	ICL	0.58		1.4	A	Peak current(4)(5), over full operating temperature range	6
Output leakage current	IL			50	μA	Output = 0 V, (4)(6)(7)	6
Output leakage current	IL		2	15	mA	Output = −1 V, (4)(6)(7)	6
Quiescent current	IQ		5	10	mA	See(6)	6
Standby quiescent current	ISTBY		140	250	μA	ON/OFF pin = 5 V (OFF)(7), LM2594HV, TJ = 25°C	6
Standby quiescent current	ISTBY			300	μA	ON/OFF pin = 5 V (OFF)(7), LM2594HV, over full operating temperature range	6
ON/OFF pin logic input threshold voltage	VIL			0.6	V	Low (regulator ON), over full operating temperature range	6
ON/OFF pin logic input threshold voltage	VIH	2			V	High (regulator OFF), over full operating temperature range	6
ON/OFF pin logic input threshold voltage	VIH		1.3		V	ON/OFF pin logic input	6
ON/OFF pin input current	IH		5	15	μA	VLOGIC = 2.5 V (regulator OFF)	6
ON/OFF pin input current	IL		0.02	5	μA	VLOGIC = 0.5 V (regulator ON)	6

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part	Material	Colour / plating	Datasheet says	Page
contacts	copper		copper area connected to this pin must be kept to a minimum.	3

CAD (KiCad official)

Symbol: LM2594HVN-ADJ
Footprint: Package_DIP:DIP-8_W7.62mm
3D model: PDIP-8 (KiCad packages3D, STEP)
3D model files: lm2594hvn-adj-etched.step / lm2594hvn-adj-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2594hvn-adj.step / lm2594hvn-adj.glb are the bare package body.

Provenance

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

Datasheet: Texas Instruments datasheet (44 pp, sha256 b24b906ae5438bc8, retrieved 2026-11-02, tier: manufacturer)
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

LM2594HVN-ADJ

Verified LM2594HVN-ADJ

Verification log 1 record

3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

README