BUK221-50DY
Dual channel high-side TOPFET™
Rev. 01 — 16 April 2003 Product data
1. Product profile
1.1 Description
Monolithic temperature and overload protected dual high-side power switch based on
TOPFET™ Trench technology in a 7-pin surface mount plastic package.
Product availability:
BUK221-50DY in SOT427 (D
2
-PAK).
1.2 Features
1.3 Applications
1.4 Quick reference data
■ 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.
■ 12 and 24 V grounded loads ■ High inrush current loads
■ Inductive loads ■ Replacement for relays and fuses.
Table 1: Quick reference data
Symbol Parameter Min Max Units
R
BLon
battery-load on-state resistance - 90 mΩ
I
L
load current - 4 A
I
L(nom)
nominal load current (ISO) 3.6 - A
I
L(lim)
self-limiting load current 8 16 A
V
BG(oper)
battery-ground operating voltage 5.5 35 V
