High Performance 1A LDO
ISL78310
Features
The ISL78310 is a low dropout voltage, high-current, single
output LDO specified for 1A output current. This part operates
from input voltages down to 2.2V and up to 6V. The part offers
fixed and external resistor adjustable output voltages from 0.8V
to 5V. Custom voltage options are available upon request.
• 2.2V to 6V Input Supply
• 130mV Dropout Voltage Typical (at 1A)
• Fast Load Transient Response
• ±0.2% Initial V
OUT
Accuracy
• Adjustable In-Rush Current Limiting
• 58dB Typical PSRR
For applications that desire to set the in-rush current to less than
the current limit of the part, or for applications that require
turn-on time control, an external capacitor can be placed on the
soft-start pin for maximum control. A supply-independent
ENABLE signal allows the part to be placed into a low quiescent
current shutdown mode. Sub-micron CMOS process is used for
this product family to deliver best-in-class analog performance
and overall value.
• 63µV
Output Noise at V = 1.8V
OUT
RMS
• Power-Good Feature
• 500mV Feedback Voltage
• Supply-Independent 1V Enable Input Threshold
• Short-Circuit Current Protection
This CMOS LDO consumes significant lower quiescent (ground
pin) current as a function of load over bipolar LDOs, which
translates into higher efficiency and packages with smaller
footprints. Quiescent current is optimized to achieve a very fast
load transient response.
• 1A Peak Reverse Current
• Over-Temperature Shutdown
• Any Cap Stable with Minimum 10µF Ceramic
• ±1.8% Guaranteed V
OUT
Accuracy for Junction Temperature
The ISL78310 is both AEC-Q100 rated and fully TS16949
compliant. The ISL78310 is rated for the automotive
temperature range (-40°C to +125°C).
Range from -40°C to +125°C
• Available in a 10 Lead DFN Package
• Pb-Free (RoHS Compliant)
• AEC-Q100 Tested
Applications
• Core & I/O Power
• TS16949 Compliant
• Camera Modules
• Post Regulation of Switched Supplies
• Radio Systems
• Infotainment Systems
Pin Configuration
ISL78310
(10 LD 3x3 DFN)
TOP VIEW
VOUT
VIN
1
2
3
4
5
10
9
VOUT
SENSE/ADJ
PG
VIN
NC
8
PAD
7
ENABLE
SS
GND
6
February 17, 2011
FN7810.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
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