RT9070B Datasheet PDF - Richtek Technology
| Part Number | RT9070B | |
| Description | Low Dropout Voltage Linear Regulator | |
| Manufacturers | Richtek Technology | |
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RT9070B
70V, Low Dropout Voltage Linear Regulator
General Description
The RT9070B is a high voltage (70V 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 (23A operating and 3A shutdown)
are ideal for use in battery-powered and/or high voltage
systems. Ground current is well-controlled in all
conditions, including dropout.
The RT9070B operates with any reasonable output
capacitors including 1F 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.
The RT9070B 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 70V
Low Quiescent Current: 23A Operating and 3A
Shutdown
Low Dropout Voltage: 180mV (typical) at 20mA
Adjustable (1.25V to 60V) Output Voltage
2% Initial Output Tolerance
Stable with 1F Output Capacitor
Stable with Aluminum, Tantalum or Ceramic
Capacitors
No Reverse-Current Protection Diode Needed
70V Reverse-Battery Protection
Internal Current Limit
Internal Thermal Shutdown Protection
Marking Information
6A=DNN
6A= : Product Code
DNN : Date Code
Simplified Application Circuit
RT9070B
VIN VIN VOUT
VOUT
CIN R1 CCOMP COUT
FB
SHDN
GND
R2
Copyright © 2016 Richtek Technology Corporation. All rights reserved.
DS9070B-00 April 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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RT9070B
Parameter
Symbol
Test Conditions
Min Typ Max Unit
FB Pin Bias Current
IFB
-- 8 50 nA
Shutdown Threshold
SHDN Pin Current
VIH
VIL
ISHDN
On to Off
Off to On
VSHDN = 2V
-- -- 2
V
0.4 --
--
-- 0.4 2 A
Quiescent Current in
Shutdown
Power Supply Rejection
Rate
ISD
PSRR
VIN = 6V, or VSHDN = 0V
-- 3 10 A
VIN = 7V (Avg), VRIPPLE = 0.5 VP-P,
fRIPPLE = 120Hz, ILOAD = 20mA
--
75
--
dB
Output Current Limit
ILIM
VIN = 12V, VOUT = 11V, VFB = 1.2V
25 40
-- mA
Input Reverse Leakage
Current
IVINr
VIN = –70V, VOUT = 0V
-- -- 6 mA
Reverse Output Current
Over-Temperature
Protection
IVOUTr
TSD
FB connect to OUT, VOUT = 1.27V,
VIN < 0V
-- 19 40 A
-- 150 --
C
Note 1. Stresses beyond those listed “Absolute Maximum Ratings” may cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the
operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may affect
device reliability.
Note 2. JA is measured at TA = 25C on a high effective thermal conductivity four-layer test board per JEDEC 51-7.
Note 3. Devices are ESD sensitive. Handling precaution recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
Copyright © 2016 Richtek Technology Corporation. All rights reserved.
DS9070B-00 April 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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| Information | Total 12 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ RT9070B.PDF Datasheet ] | |
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