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ir21271strpbf-etched.step	ir21271strpbf: factory component page (tier=lcsc) · Ray	8d ago
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IR21271STRPBF

Infineon Technologies · Gate Drivers · SOIC-8

IR21271STRPBF from Infineon Technologies, in a SOIC-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	Logic and gate drive supply, recommended 10 to 20V (absolute max 25V).
2	IN	input	Logic input for gate driver output HO, in phase with HO for IR21271, compatible with 3.3V, 5V and 15V logic, 0 to VCC.
3	FAULT	output	Open-drain negative-logic output that indicates an over-current shutdown has occurred.
4	COM	power_in	Logic ground, reference for the logic input and supply.
5	VS	power_in	High side floating supply return, offset up to 600V.
6	CS	input	Current sense input to the current sense comparator, recommended VS to VS + 5V, with a 1.8V typical threshold for IR21271.
7	HO	output	High side gate drive output.
8	VB	power_in	High side floating supply, VS + 9V to VS + 20V for IR21271 (absolute max 625V).

Key specifications

Parameter	Value
Manufacturer	Infineon Technologies
Package	SOIC-8
Category	Motor Driver 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
VB High Side Floating Supply Voltage	VB	-0.3		625	V		2
dVs/dt Allowable Offset Supply Voltage Transient	dVs/dt			50	V/ns		2
VCC Logic Supply Voltage	VCC	-0.3		25	V		2
PD Package Power Dissipation (8 Lead SOIC)	PD			0.625	W	TA ≤ +25C	2
RthJA Thermal Resistance, Junction to Ambient (8 Lead SOIC)	RthJA			200	C/W	Board mounted, still air	2
TJ Junction Temperature	TJ			150	C		2
TS Storage Temperature	TS	-55		150	C		2
TL Lead Temperature (Soldering)	TL			300	C	Soldering, 10 seconds	2
VS High Side Floating Offset Voltage	VS			600	V	Note 1: logic operational for VS of -5 to +600V	2
VCC Logic Supply Voltage	VCC	10		20	V		2
TA Ambient Temperature	TA	-40		125	C		2
Logic “1” Input Voltage (IR2127/IR21271)	VIH	3			V		3
Logic “0” Input Voltage (IR2127/IR21271)	VIL			0.8	V	VCC = 10V to 20V; VIN = 0V or 5V	3
High Level Output Voltage, VBIAS - VO	VOH			100	mV	IO = 0A	3
Low Level Output Voltage, VO	VOL			100	mV	IO = 0A	3
Offset Supply Leakage Current	ILK			50	uA	VB = VS = 600V	3
Quiescent VBS Supply Current	IQBS		200	400	uA		3
Quiescent VCC Supply Current	IQCC		60	120	uA		3
Logic “1” Input Bias Current	IIN+		7	15	uA	VIN = 5V	3
Logic “0” Input Bias Current	IIN-			1	uA	VIN = 0V	3
“High” CS Bias Current	ICS+			1	uA	VCS = 3V	3
VBS Supply Undervoltage Positive Going Threshold (IR21271)	VBSUV+	6.3	7.2	8.2	V		3
VBS Supply Undervoltage Negative Going Threshold (IR21271)	VBSUV-	6	6.8	7.7	V		3
Output High Short Circuit Pulsed Current	IO+	200	250		mA	VO = 0V, VIN = 5V, PW ≤ 10 s	3
Output Low Short Circuit Pulsed Current	IO-	420	500		mA	VO = 15V, VIN = 0V, PW ≤ 10 s	3
Turn-On Propagation Delay	ton		200	250	ns	VS = 0V	3
Turn-Off Propagation Delay	toff		150	200	ns	VS = 600V	3
Turn-On Rise Time	tr		80	130	ns		3
Turn-Off Fall Time	tf		40	65	ns		3
Start-Up Blanking Time	tbl	500	700	900	ns		3
CS Shutdown Propagation Delay	tcs		240	360	ns		3
CS to FAULT Pull-Up Propagation Delay	tflt		340	510	ns		3

CAD (KiCad official)

Symbol: IR21271STRPBF
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)
3D model files: ir21271strpbf-etched.step / ir21271strpbf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ir21271strpbf.step / ir21271strpbf.glb are the bare package body.

Provenance

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

Datasheet: Infineon Technologies datasheet (16 pp, sha256 7a1a03dbfe906ade, retrieved 2026-10-18, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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