BUK221-50DY

Features:

Very low quiescent current
CMOS logic compatibility
Power TrenchMOS™
Current limitation
Overtemperature protection
Latched overload protection
Over and undervoltage protection
ESD protection for all pins
Reverse battery protection
Diagnostic status indication
Low charge pump noise
Off-state open load detection
Loss of ground protection
Load dump protection
Negative load clamping
Internal ground resistor.

Application

12 and 24 V grounded loads
High inrush current loads
Inductive loads
Replacement for relays and fuses.


Specifications

Symbol	Parameter	Conditions		Min	Max	Unit
VBG	battery-ground supply voltage		[1]	-	45	V
IL	load current	Tmb130		-	4	A
Ptot	total power dissipation	Tmb25		-	44.6	W
Tstg	storage temperature			-55	+175
Tj	junction temperature			-40	+150
Tmb	mounting base temperature	during soldering (10 s)		-	260
Reverse battery voltage
VBGR	reverse battery-ground supply voltage	RI3.3 k; RSS 3.3 k; Figure 10	[2]	-	16	V
VBGRR	repetitive reverse battery-ground supply voltage			-	32	V
Input current
II	input current			-5	+5	mA
IIRM	repetitive pead input current	0.1; tp = 300s		-50	+50	mA
Status current
IS	status current			-5	+5	mA
ISRM	repetitive peak status current	0.1; tp = 300s		-50	+50	mA
Inductive load clamping
EBL(CL)S	non-repetitive battery-load clamping energy	Tj = 150 prior to turn-off; VBG = 13 V; IL = 5 A; (one channel) Figure 13		-	60	mJ
Electrostatic discharge voltage
Vesd	electrostatic discharge voltage	Human Body Model 1; C = 100 pF; R = 1.5 k		-	2	kV

[1] The device will not be harmed by exposure to the maximum supply voltage, but normal operation is not possible because of overvoltage shutdown - see Table 6 "Static characteristics" for the operating range.
[2] Reverse battery voltage is only allowed with external resistors to limit the input and status currents to a safe value. The connected load must limit the reverse load current. The internal ground resistor limits the reverse battery ground current. See Figure 10 "Typical dynamic response circuit diagram including reverse supply protection and open load detection."


Description

Monolithic temperature and overload protected dual high-side power switch based on TOPFET™BUK221-50DY Trench technology in a 7-pin surface mount plastic package.
Product availability:
BUK221-50DY in SOT427 (D²-PAK).