1
DATASHEET
40V, Low Quiescent Current, 150mA Linear Regulator
for Automotive Applications
ISL78301
The ISL78301 is a high voltage, low quiescent current linear
regulator ideally suited for “always-on” and “keep alive”
automotive applications. The ISL78301 operates from an input
voltage of +6V to +40V under normal operating conditions and
operates down to +3V under a cold crank. It consumes only 18µA
of quiescent current at no load on the adjustable version.
The ISL78301 is available in a fixed 3.3V, 5V and adjustable
output voltage (2.5V to 12V) options. It features an EN pin that
can be used to put the device into a low-quiescent current
shutdown mode where it draws only 2µA of supply current. The
device features over-temperature shutdown and current limit
protection.
The ISL78301 is AEC-Q100 qualified. It is rated over the -40°C to
+125°C automotive temperature range and is available in a
14 Ld HTSSOP with an exposed pad package.
Applications
•Automotive
•Industrial
• Telecommunications
Features
• Optimized for “always-on” automotive applications
• 18µA typical quiescent current
• Guaranteed 150mA output current
• Operates through cold crank down to 3V
• 40V tolerant logic level (TTL/CMOS) enable input
• 2µA of typical shutdown current
• Low dropout voltage of 295mV at 150mA
• Fixed +3.3V, +5.0V and adjustable output voltage options
• Stable operation with 10µF output capacitor
• Thermal shutdown and current limit protection
• -40°C to +125°C operating temperature range
• Thermally enhanced 14 Ld exposed pad HTSSOP package
• AEC-Q100 qualified
• 5kV ESD HBM rated
• Pb-free (RoHS compliant)
FIGURE 1. TYPICAL APPLICATION - ADJ VERSION
FIGURE 2. TYPICAL APPLICATION - FIXED VERSION
FIGURE 3. QUIESCENT CURRENT vs LOAD CURRENT (ADJ VERSION AT UNITY GAIN) V
IN
= 14V
IN
OUT
EN
(ISL78301)
ADJ
GND
C
IN
0.1µF
C
OUT
10µF
R1
R2
V
IN
= 14V V
OUT
= 12V
IN
OUT
EN
(ISL78301)
GND
C
IN
0.1µF
C
OUT
10µF
V
IN
= 14V V
OUT
= 5V
0
5
10
15
20
25
-50 0 50 100 150
TEMPERATURE (°C)
QUIESCENT CURRENT (µA)
April 7, 2015
FN6705.2
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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