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Infineon Technologies BTS500551TMB — Power Management (PMIC / Gate Driver)

Infineon BTS500551TMB High-Side Power Switch, 4.4 mOhm, 55A

MPNBTS500551TMB
Active

Infineon PROFET BTS500551TMB high-side power switch, 1 output, N-channel, 4.4 mOhm typical Rds(on), 55A max output, 5V~34V load, TO-220-7 formed leads, -40°C~150°C junction.

$7.3400Ref. price · indicative, final on quote
Infineon Technologies BTS500551TMB datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

BTS500551TMB specifications
ParameterValue
Input typeNon-Inverting
Output typeN-Channel
TypeGeneral Purpose
MountingThrough Hole
Voltage - load5V ~ 34V
Voltage - supply (Vcc (Vdd))Not Required
Output current55A
I/O channels1
InterfaceOn/Off
Operating temperature-40°C~150°C(TJ)
PackageBulk
FeaturesAuto Restart
Rds on4.4mOhm
CaseTO-220-7 Formed Leads
Fault protectionCurrent Limiting (Fixed), Open Load Detect, Over Load, Over Temperature, Over Voltage, Short Circuit, UVLO
Output configurationHigh Side
Ratio - Input:Output1:1

Product details

The Infineon BTS500551TMB is a single-channel high-side power switch in the PROFET family. Its typical on-resistance of 4.4 mOhm sets the conduction loss floor. The 55 A maximum output current rating covers heavy loads like motors, solenoids, and pre-charge circuits.

The load voltage range spans 5 V to 34 V. The switch does not require a Vcc supply — it self-powers from the load pin, simplifying the BOM by eliminating a separate bias rail. Fault protection includes fixed current limiting, open load detection, over-temperature shutdown, over-voltage clamp, short-circuit protection, and under-voltage lockout.

Package and mounting — TO-220-7 formed leads

The BTS500551TMB comes in a TO-220-7 package with formed leads (P-TO220-7-11), a through-hole footprint that suits power-dissipation designs requiring a heatsink. The 7-lead layout is specific to this PROFET family — verify the hole pattern against the board layout before committing.

Frequently asked questions

What is the Rds(on) of BTS500551TMB?

The typical on-resistance is 4.4 mOhm. This value is specified at 25°C junction; actual Rds(on) increases with temperature per the normalised curve in the datasheet, so derate the continuous current for high-temperature operation.

Does BTS500551TMB have overcurrent protection?

Yes, it includes fixed current limiting, short-circuit protection, and over-temperature shutdown. The protection suite also covers open load detection, over-voltage clamping, and under-voltage lockout.