NCV47551 Datasheet, PDF (1/12 Pages) ON Semiconductor – 3.3 V to 20 V Adjustable Low Noise LDO Regulator with Adjustable Current Limit and 3.3 V Logic

NCV47551
3.3 V to 20 V Adjustable
Low Noise LDO Regulator
with Adjustable Current
Limit and 3.3 V Logic
Compatible Enable Input
The NCV47551 is a low noise low output current integrated low
dropout regulator designed for use in harsh automotive environments.
It includes wide operating temperature and input voltage ranges. The
device is offered with adjustable voltage versions available in 3%
output voltage accuracy. It has a high peak input voltage tolerance and
reverse input voltage protection. It also provides overcurrent
protection, overtemperature protection and enable for control of the
state of the output voltage. The integrated current sense feature
provides diagnosis and system protection functionality. The current
limit of the device is adjustable by resistor connected to CSO pin.
Voltage on CSO pin is proportional to output current.
Features
• Adjustable Voltage Version (from 3.3 V to 20 V) ± 3% Output
Voltage
• Enable Input (3.3 V Logic Compatible Thresholds)
• Adjustable Current Limit (from 100 mA to 20 mA) with 10%
Accuracy
• Protection Features:
♦ Current Limitation
♦ Thermal Shutdown
♦ Reverse Input Voltage
• This is a Pb−Free Device
Typical Applications
• Microphone Power Supply
• Audio and Infotainment System
• Navigation
• Satellite Radio
http://onsemi.com
8
1
SOIC−8
SUFFIX D
CASE 751
MARKING
DIAGRAM
8
47551
ALYW
G
1
47551
A
L
Y
W
G
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
C_in
1 mF
V_in
V_out
EN
NCV47551
ADJ
C_b*
R₁
NR
C_noise*
GND
CSO
C_CSO
1 mF
R₂
R_CSO
C_b*, C_noise* − Optional for noise reduction.
Figure 1. Application Schematic
(See Application Section for more details)
C_out
10 mF
© Semiconductor Components Industries, LLC, v2013
1
December, 2013 − Rev. 0
Publication Order Number:
NCV47551/D