TL2844BDR from Texas Instruments, in a SOIC-14. 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	bidirectional	Error amplifier compensation pin (I/O); error amplifier output sink current is limited to 10 mA maximum.
2	NC	unconnected	No internal connection; do not connect.
3	VFB	input	Error amplifier input; recommended input voltage 0 to 5.5 V.
4	NC	unconnected	No internal connection; do not connect.
5	ISENSE	input	Current sense comparator input; recommended input voltage 0 to 5.5 V.
6	NC	unconnected	No internal connection; do not connect.
7	RT/CT	bidirectional	Oscillator RC input (I/O); recommended input voltage 0 to 5.5 V.
8	POWER GROUND	power_in	Output PWM ground terminal; recommended voltage -0.1 to 1 V (14-pin D package only).
9	GND	power_in	Device power supply ground terminal; all voltages are specified with respect to this terminal.
10	OUTPUT	output	PWM output (totem-pole, drives N-channel MOSFETs); recommended output voltage 0 to 30 V, absolute maximum output current ±1 A.
11	VC	power_in	Output PWM positive voltage supply; recommended maximum 30 V (14-pin D package only).
12	VCC	power_in	Device positive voltage supply; recommended maximum 30 V, supply current externally limited to 25 mA maximum.
13	NC	unconnected	No internal connection; do not connect.
14	VREF	power_in	Oscillator voltage reference output; recommended reference output current is -20 mA.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-14
Category	Power Management (PMIC)
Pins	14

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			30	V	Low impedance source	4
Analog input voltage range	VI	-0.3		6.3	V	VFB and ISENSE	4
Supply current	ICC			30	mA		4
Output current	IO	-1		1	A		4
Error amplifier output sink current	IO(sink)			10	mA		4
Output energy				5	μJ	Capacitive load	4
Virtual junction temperature	TJ			150	°C		4
Storage temperature range	Tstg	-65		150	°C		4
Supply voltage	VCC			30	V		4
Supply voltage VC	VC			30	V	14-pin D package only	4
Input voltage RT/CT	VI	0		5.5	V	RT/CT	4
Input voltage VFB and ISENSE	VI	0		5.5	V	VFB and ISENSE	4
Output voltage	VO	0		30	V	OUTPUT	4
Power ground voltage		-0.1		1	V	14-pin D package only	4
Supply current, externally limited	ICC			25	mA		4
Average output current	IO			200	mA		4
Reference output current	IO(ref)			-20	mA		4
Oscillator frequency	fosc	100		500	kHz		4
Operating free-air temperature TL284xB	TJ	-40		85	°C	TL284xB	4
Junction-to-ambient thermal resistance	RθJA		87.9		°C/W	D (14 pins)	5
Output voltage		4.95	5	5.05	V	IO = 1 mA, TJ = 25°C	5
Line regulation			6	20	mV	VCC = 12 V to 25 V	5
Load regulation			6	25	mV	IO = 1 mA to 20 mA	5
Average temperature coefficient of output voltage			0.2	0.4	mV/°C		5
Output voltage, worst-case variation		4.9		5.1	V	VCC = 12 V to 25 V, IO = 1 mA to 20 mA	5
Short-circuit output current		-30	-100	-180	mA		5
Initial accuracy		47	52	57	kHz	TJ = 25°C	5
Initial accuracy		44		60	kHz	TA = Tlow to Thigh	5
Initial accuracy		225	250	275	kHz	TJ = 25°C, RT = 6.2 kΩ, CT = 1 nF	5
Voltage stability			0.2	1	%	VCC = 12 V to 25 V	5
Temperature stability				5	%		5
Discharge current		7.8	8.3	8.8	mA	TJ = 25°C, RT/CT = 2 V	5
Discharge current		7.5		8.8	mA	RT/CT = 2 V	5
Feedback input voltage	VFB	2.45	2.5	2.55	V	COMP = 2.5 V	6
Input bias current			-0.3	-1	μA		6
Open-loop voltage amplification	AVOL	65	90		dB	VO = 2 V to 4 V	6
Gain-bandwidth product		0.7	1		MHz		6
Supply-voltage rejection ratio		60	70		dB	VCC = 12 V to 25 V	6
Output sink current		2	6		mA	VFB = 2.7 V, COMP = 1.1 V	6
Output source current		-0.5	-0.8		mA	VFB = 2.3 V, COMP = 5 V	6
High-level output voltage		5	6		V	VFB = 2.3 V, RL = 15 kΩ to GND	6
Low-level output voltage			0.7	1.1	V	VFB = 2.7 V, RL = 15 kΩ to GND	6
Voltage amplification		2.85	3	3.15	V/V	Measured between ISENSE and COMP, input 0 V to 0.8 V	6
Current-sense comparator threshold		0.9	1	1.1	V	COMP = 5 V	6
High-level output voltage	VOH	13	13.5		V	IOH = -20 mA	7
High-level output voltage	VOH	12	13.5		V	IOH = -200 mA	7
Low-level output voltage	VOL		0.1	0.4	V	IOL = 20 mA	7
Low-level output voltage	VOL		1.5	2.2	V	IOL = 200 mA	7
Rise time			25	150	ns	CL = 1 nF, TJ = 25°C	7
Fall time			25	150	ns	CL = 1 nF, TJ = 25°C	7
UVLO saturation			0.7	1.2	V	VCC = 5 V, IOL = 1 mA	7
Start threshold voltage TLx844B		15	16	17	V	TLx844B	7
Minimum operating voltage after start-up TLx844B		9	10	11	V	TLx844B	7
Maximum duty cycle TLx844B		46	48	50	%	TLx844B	7
Minimum duty cycle		0			%		7
Start-up current			0.3	0.5	mA		7
Operating supply current	ICC		11	17	mA	VFB and ISENSE at 0 V	7
Limiting voltage		30	39		V	ICC = 25 mA	7

CAD (KiCad official)

Symbol: TL2844BDR
Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
3D model: SOIC-14 (KiCad packages3D, STEP)
3D model files: tl2844bdr-etched.step / tl2844bdr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tl2844bdr.step / tl2844bdr.glb are the bare package body.

Provenance

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

Datasheet: Texas Instruments datasheet (31 pp, sha256 42e42dc7a6e780d9, retrieved 2026-11-06, 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).

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TL2844BDR

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3D Model

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