RT9072A Datasheet, PDF (1/13 Pages) Richtek Technology Corporation – Low Dropout Voltage

RT9072A/B
80V, Low Dropout Voltage Linear Regulator
General Description
The RT9072A/B is a high voltage (80V operation), low
quiescent current, low dropout linear regulator. The
device supplies 20mA output current with a maximum
dropout voltage of 230mV. Its low quiescent and
shutdown currents (23A operating and 3A shutdown)
are ideal for use in battery-powered and/or high voltage
systems. Ground current is well-controlled in all
conditions, including dropout.
The RT9072A/B operates with any reasonable output
capacitors including 1F low-ESR ceramic types. It
features excellent line and load transient responses.
Internal protection circuitry includes reverse-battery
protection, current limiting, thermal shutdown, and
reverse current protection. Output voltage accuracy is
±3% over the entire line, load, and temperature range.
The RT9072A/B has an adjustable output voltage
(1.25V to 60V). It is available in the SOT-23-5 package.
Applications
 Low Current, High Voltage Regulators
 Battery Powered Applications
 Telecom and Datacom Applications
 Automotive Applications
Features
 Wide Input Voltage Range: 4.5V to 80V
 Low Quiescent Current : 23A Operating and 3A
Shutdown
 Low Dropout Voltage: 180mV (typical) at 20mA
 Adjustable (1.25V to 60V) Output Voltage
 2% Initial Output Tolerance
 3%Output Tolerance over Line, Load,
Temperature Range
 Stable with 1F Output Capacitor
 Stable with Aluminum, Tantalum or Ceramic
Capacitors
 No Reverse-Current Protection Diode Needed
 80V Reverse-Battery Protection
 Internal Current Limit
 Internal Thermal Shutdown Protection
Marking Information
RT9072AGB
4Y=DNN
4Y= : Product Code
DNN : Date Code
RT9072BGB
4X=DNN
4X= : Product Code
DNN : Date Code
Simplified Application Circuit
RT9072A/B
V_IN
VIN
VOUT
V_OUT
C_IN
R1 ^{CCOMP COUT}
FB
SHDN/
SHDN
R2
GND
Copyright © 2016 Richtek Technology Corporation. All rights reserved.
DS9072A/B-00 May 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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