Datasheet
RAA214403, RAA214404, RAA214405, RAA214409
40V 150mA Low IQ Fixed Output Voltage (3.3V, 3.6V, 5V, 9V) Low Dropout Regulators
The RAA21440x family, RAA214403 (3.3V),
RAA214404 (3.6V), RAA214405 (5V), and
RAA214409 (9V) are low-quiescent current fixed
output voltage low-dropout regulators capable of
sourcing up to 150mA to a load. The LDO has a wide
input voltage range up to 40V.
Features
▪ Typical low-quiescent current: 3.8µA at no load
▪ Typical shutdown current (SOT23 package):
<0.5µA
▪ Wide input voltage range: up to 40V with 45V line
transient tolerance
The LDOs feature a ±3% output voltage accuracy
(over line, load, and temperature), input UVLO with
hysteresis, enable control, internal current limit, and
over-temperature shutdown protection.
▪ Max output current: 150mA
▪ Output voltage accuracy: ±3% over line, load, and
temperature
▪ Typical dropout voltage: 0.5V at 100mA
The LDOs are stable with a minimum 2.2µF ceramic
output capacitor. The 3.3V and 5V LDOs are available
in the 5 Ld SOT-23 and the 3 Ld SOT-89 packages.
The 3.6V LDO is available in the 5-Ld SOT-23
package. The 9V LDO is available in the 3 Ld SOT-89
package.
▪ Fixed output voltage options: 3.3V, 3.6V, 5V, and
9V
▪ Stable with 2.2µF minimum ceramic output
capacitor
▪ Overcurrent and over-temperature protection
▪ Junction temperature range: -40°C to 125°C
The combination of low-quiescent current,
low-shutdown current (shutdown function available
with the SOT23 package), and small package size
makes this family of LDOs an ideal choice for portable
devices and battery powered equipment.
Applications
▪ Portable and battery-powered equipment
▪ Notebook computers
▪ Motor drives
NC
VEN
EN
IN
VOUT
3.3V, 3.6V or
5V
RAA214403/4/5
(SOT-23)
up to 40V VIN
OUT
IOUT(MAX)
150mA
2.2µF
GND
2. 2µF
VOUT
3.3V, 5V or
9V
IOUT(MAX)
150mA
RAA214403/5/9
up to 40V VIN
IN
OUT
(SOT-89)
2.2µF
2. 2µF
GND
Figure 1. RAA214403/4/5/9 Typical Application Schematics
R16DS0291EU0100 Rev.1.00
Aug 8, 2023
Page 1
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