DATASHEET
ISL78301
40V, Low Quiescent Current, 150mA Linear Regulator for Automotive Applications
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.
FN6705
Rev 2.00
April 7, 2015
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)
Applications
• Automotive
• Industrial
• Telecommunications
V
IN
= 14V
C
IN
0.1µF
IN
OUT
R1
V
OUT
= 12V
C
OUT
10µF
C
IN
0.1µF
V
IN
= 14V
IN
OUT
V
OUT
= 5V
C
OUT
10µF
EN
(ISL78301)
ADJ
R2
EN
(ISL78301)
GND
GND
FIGURE 1. TYPICAL APPLICATION - ADJ VERSION
25
FIGURE 2. TYPICAL APPLICATION - FIXED VERSION
QUIESCENT CURRENT (µA)
20
15
10
5
0
-50
0
50
TEMPERATURE (°C)
100
150
FIGURE 3. QUIESCENT CURRENT vs LOAD CURRENT (ADJ VERSION AT UNITY GAIN) V
IN
= 14V
FN6705 Rev 2.00
April 7, 2015
Page 1 of 10
ISL78301
Block Diagram
VIN
EN
CONTROL
LOGIC
+
-
THERMAL
SENSOR
REFERENCE
+
SOFT-START
FET DRIVER
WITH CURRENT
LIMIT
EA
VOUT
ADJ
GND
Pin Configuration
NC 1
IN 2
NC 3
NC 4
NC 5
NC 6
EN 7
ISL78301
(14 LD HTSSOP)
TOP VIEW
14 OUT
13 NC
12 ADJ/NC
THERMAL
PAD
11 NC
10 NC
9 NC
8 GND
Pin Descriptions
PIN NUMBER
1, 3, 4, 5, 6, 9, 10,
11, 13
2
7
8
12
14
PIN NAME
NC
IN
EN
GND
ADJ/NC
OUT
EPAD
DESCRIPTION
Pins have internal termination and can be left unconnected. Connection to ground is optional.
Input voltage pin. A minimum 0.1µF ceramic capacitor is required for proper operation.
Enable pin. High on this pin enables the device.
Ground pin.
In the adjustable output voltage option, this pin is connected to the external feedback resistor divider which sets
the LDO output voltage. In the 3.3V and 5V options, this pin is not used and can be connected to ground.
Regulated output voltage. A 10µF ceramic capacitor is required for stability.
It is recommended to solder the EPAD to the ground plane.
FN6705 Rev 2.00
April 7, 2015
Page 2 of 10
ISL78301
Ordering Information
PART NUMBER
(Notes
1, 2, 3)
ISL78301FVEAZ
ISL78301FVEBZ
ISL78301FVECZ
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to
TB347
for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
3. For Moisture Sensitivity Level (MSL), please see product information page for
ISL78301.
For more information on MSL please see techbrief
TB363.
PART
MARKING
78301 FVEAZ
78301 FVEBZ
78301 FVECZ
TEMP. RANGE
(°C)
-40 to +125
-40 to +125
-40 to +125
ENABLE
PIN
Yes
Yes
Yes
OUTPUT VOLTAGE
(V)
3.3
5.0
ADJ
PACKAGE
(Pb-Free)
14 Ld HTSSOP
14 Ld HTSSOP
14 Ld HTSSOP
PKG.
DWG. #
M14.173B
M14.173B
M14.173B
FN6705 Rev 2.00
April 7, 2015
Page 3 of 10
ISL78301
Absolute Maximum Ratings
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +45V
IN Pin to GND Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VCC
OUT Pin to GND Voltage . . . . . . . . . . . . . . . . . . . . . . . . .. . .GND - 0.3V to 16V
ADJ Pin to GND Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GND - 0.3V to 3V
EN Pin to GND Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VCC
Output Short-circuit Duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indefinite
ESD Rating
Human Body Model (Tested per JESD22-A114E) . . . . . . . . . . . . . . . . 5kV
Machine Model (Tested per JESD-A115-A) . . . . . . . . . . . . . . . . . . . 200V
Charge Device Model (Tested per AEC-Q100-011) . . . . . . . . . . . . . 2.2kV
Latch-up (Tested per JESD78B; Class II, Level A) . . . . . . . . . . . . . . . 100mA
Thermal Information
Thermal Resistance (Typical)
JA
(°C/W)
JC
(°C/W)
14 Ld HTSSOP Package (Notes
4, 5)
. . . . .
37
5
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . . . . . .-65°C to +175°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see
TB493
Recommended Operating Conditions
Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . -40°C to +125°C
IN Pin to GND Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+3V to +40V
OUT Pin to GND Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+2.5V to +12V
EN Pin to GND Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0V to +40V
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
4.
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief
TB379.
5. For
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications
Recommended Operating Conditions, unless otherwise noted. V
IN
= 14V, I
OUT
= 1mA, C
IN
= 0.1μF,
C
OUT
= 10μF, T
A
= T
J
= -40°C to +125°C, unless otherwise noted. Typical specifications are at T
A
= +25°C. Boldface limits apply across the operating
temperature range, -40°C to +125°C.
PARAMETER
Input Voltage Range
SYMBOL
V
IN
Cold Crank condition
Guaranteed Output
Current
Output Voltage
I
OUT
V
OUT
V
IN
= V
OUT
+ VDO
EN = High
V
IN
= 14V
I
OUT
= 0.1mA to 150mA
3V
V
IN
40V
I
OUT
= 1mA
3.3V Version
5V Version
ADJ pin voltage
Line Regulation
Load Regulation
Dropout Voltage
(Note
6)
V
OUT
/V
IN
TEST CONDITIONS
MIN
(Note
8)
6
3
150
3.267
4.950
1.211
3.3
5
1.223
0.04
0.3
7
380
7
295
2
I
OUT
= 0mA, ADJ Version, V
OUT
= V
ADJ
I
OUT
= 1mA, ADJ Version, V
OUT
= V
ADJ
I
OUT
= 10mA, ADJ Version, V
OUT
= V
ADJ
I
OUT
=150mA, ADJ Version, V
OUT
= V
ADJ
I
OUT
= 0, 3.3V and 5.0V Versions
I
OUT
= 1mA, 3.3V and 5.0V Versions
I
OUT
= 10mA, 3.3V and 5.0V Versions
I
OUT
= 150mA, 3.3V and 5.0V Versions
18
22
34
90
22
27
39
96
3.333
5.050
1.235
0.15
0.6
33
525
33
460
3.64
24
42
60
125
28
45
65
142
TYP
MAX
(Note
8)
UNIT
40
40
V
V
mA
V
V
V
%
%
mV
mV
mV
mV
µA
µA
µA
µA
µA
µA
µA
µA
µA
V
OUT
/I
OUT
V
IN
= V
OUT
+V
DO
I
OUT
= 100µA to 150mA
V
DO
I
OUT
= 1mA, V
OUT
= 3.3V
I
OUT
= 150mA, V
OUT
= 3.3V
I
OUT
= 1mA, V
OUT
= 5V
I
OUT
= 150mA, V
OUT
= 5V
Shutdown Current
Quiescent Current
I
SHDN
I
Q
EN = LOW
EN = High
V
IN
= 14V
FN6705 Rev 2.00
April 7, 2015
Page 4 of 10
ISL78301
Electrical Specifications
Recommended Operating Conditions, unless otherwise noted. V
IN
= 14V, I
OUT
= 1mA, C
IN
= 0.1μF,
C
OUT
= 10μF, T
A
= T
J
= -40°C to +125°C, unless otherwise noted. Typical specifications are at T
A
= +25°C. Boldface limits apply across the operating
temperature range, -40°C to +125°C. (Continued)
PARAMETER
Power Supply
Rejection Ratio
EN FUNCTION
EN Threshold Voltage
V
EN_H
V
EN_L
EN Pin Current
EN to Regulation Time
(Note
7)
PROTECTION FEATURES
Output Current Limit
Thermal Shutdown
Thermal Shutdown
Hysteresis
I
LIMIT
T
SHDN
T
HYST
V
OUT
= 0V
Junction Temperature Rising
175
410
+165
+20
mA
°C
°C
I
EN
t
EN
V
OUT
= Off to On
V
OUT
= On to Off
V
OUT
= 0V
0.975
0.026
1.65
1.93
1.485
V
V
µA
ms
SYMBOL
PSRR
TEST CONDITIONS
f = 100Hz; V
IN_RIPPLE
= 500mV
P-P
; Load = 150mA, 3.3V and 5V Versions
f = 100Hz; V
IN_RIPPLE
= 500mV
P-P
; Load = 150mA, ADJ Version, V
OUT
= V
ADJ
MIN
(Note
8)
TYP
55
66
MAX
(Note
8)
UNIT
dB
NOTES:
6. Dropout voltage is defined as (V
IN
- V
OUT
) when V
OUT
is 2% below the value of V
OUT
when V
IN
= V
OUT
+ 3V.
7. Enable to Regulation is the time the output takes to reach 95% of its final value with V
IN
= 14V and EN is taken from V
IL
to V
IH
in 5ns. For the
adjustable versions, the output voltage is set at 5V.
8. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
FN6705 Rev 2.00
April 7, 2015
Page 5 of 10
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