VN21
ISO HIGH SIDE SMART POWER SOLID STATE RELAY
PRELIMINARY DATA
TYPE
VN21
s
V
DSS
60 V
R
DS( on)
0.05
Ω
I
n
(*)
7A
V
C C
26 V
s
s
s
s
s
s
MAXIMUM CONTINUOUS OUTPUT
CURRENT (#): 23 A @ T
c
= 85
o
C
5V LOGIC LEVEL COMPATIBLE INPUT
THERMAL SHUT-DOWN
UNDER VOLTAGE PROTECTION
OPEN DRAIN DIAGNOSTIC OUTPUT
INDUCTIVE LOAD FAST DEMAGNETIZATION
VERY LOW STAND-BY POWER DISSIPATION
PENTAWATT
(vertical)
PENTAWATT
(horizontal)
DESCRIPTION
The VN21 is a monolithic device made using
SGS-THOMSON Vertical Intelligent Power
Technology, intended for driving resistive or
inductive loads with one side grounded.
Built-in thermal shut-down protects the chip from
over temperature and short circuit.
The open drain diagnostic output indicates: open
load in off state and in on state, output shorted to
V
CC
and overtemperature. Fast demagnetization
of inductive loads is archieved by negative (-18V)
load voltage at turn-off.
BLOCK DIAGRAM
PENTAWATT
(in-line)
ORDER CODES:
PENTAWATT vertical
VN21
PENTAWATT horizontal VN21 (011Y)
PENTAWATT in-line
VN21 (012Y)
(*) In= Nominal current according to ISO definition for hi gh side automotive switch (see note 1)
(#) T he maximum continuous output current is the current at T
c
= 85
o
C for a battery voltage of 13 V which does not activate
sel f protection
September 1994
1/11
STMICROELECTRONICS [ STMICROELECTRONICS ]
