HIP1090AS Intersil Corporation, HIP1090AS Datasheet - Page 3

• Manufacturer Part Number: HIP1090AS
• Description: Protected High Side Power Switch with Transient Suppression
• Manufacturer: Intersil Corporation

Applications
The HIP1090 may be used as a “hard-wired pass-thru”
device to protect the load from source voltage transients or
may be used as an active high side power interface switch
with up to 1A of Load current capability. An ON state
condition of (V
range required to activate the high pass switch, allowing the
supply source to conduct through the PNP to the load. When
the control terminal, V
open (no conduction). Figure 2 shows an HIP1090
application example with a switch in the V
comparison to the hard wired circuit of Figure 1 where pin 2
is fixed at ground, pin 2 in the circuit of Figure 2 is switched
from open to ground to turn-ON the high pass switch. Used
SWITCH
FIGURE 2. TYPICAL APPLICATIONS OF THE HIP1090 AS A TRANSIENT SUPPRESSOR IN A HIGH PASS SWITCH MODE
V
INPUT
FIGURE 1. TYPICAL APPLICATION OF THE HIP1090 AS A TRANSIENT SUPPRESSOR IN A “PASS-THRU” MODE
BATT
V
NOTE:
V
V
BATT
LOAD
SAT
INPUT
1
IN
TYP < 0.8V at 1A
= V
- 4V)
V
IN
BATT
1
THERMAL
CON
LIMIT
- V
V
V
IN
SAT
THERMAL
CON
is open, the high pass switch is
LIMIT
CURRENT
(V
LIMIT
IN
R
S
- 16V) is the normal
CURRENT
LIMIT
R
CON
S
SHUTDOWN
VOLTAGE
OVER-
terminal. In
SHUTDOWN
VOLTAGE
(CONTROL OR GND)
OVER-
HIP1090
AMPLIFIER
CURRENT
9-24
SWITCH
2
V
BASE
CON
OFF
in this mode, the HIP1090 is both an effective transient
suppressor and a high pass switch. The switch in the V
terminal may be active or passive and conducts typically
less than 50mA of current. The HIP1090 used in the con-
trolled switching mode retains all of the protected features of
the device. In either circuit the output capacitor may be
increased in size to hold charge longer during transient
interruptions at the input. The charge duration for larger
capacitors or for lamp loads is tolerated because of the
internal short circuit current limiting protection. Sustained
short circuits may cause the junction temperature to reach
the thermal shutdown temperature (150
AMPLIFIER
CURRENT
2
BASE
V
(CONTROL)
ON
DETECTOR
CON
V
CE
SAT
DETECTOR
V
V
OUT
CE
SAT
0.47 F
V
3
OUT
3
1000 F
0.47 F
DASH PANEL LOAD
TO
o
C).
TO OTHER
LIGHTS
AND
INSTRUMENTS
CON