RS3221
REV A.3
1 / 22
www.run-ic.com
Low Power, Low Dropout,
200mA Linear Regulators
1 FEATURES
Low Dropout Voltage
Thermal-Overload Protection
Output Current Limit
10nA Logic-Controlled Shutdown
1μA Low Supply Current
2.5V to 7.5V Input Voltage Range
200mA Output Current
-40°C to +85°C Operating Temperature Range
Available in Green UTDFN-1x1-4, SOT23-5,
SOT23-3, SOT353(SC70-5) and SOT89-3L
(L-Type) Package
2 APPLICATIONS
• Cellular Telephones
• Camera Modules
• Modems
• HiFi Audio Radio Transceivers
• PLL/Synthesizer, Clocking
• Medium-Current, Noise-Sensitive
Applications
3 DESCRIPTIONS
The RS3221 series low-power, low-dropout, CMOS
LDO operate from 2.5V to 7.5V input voltage that can
supply up to 200 mA of output current. Designed to
meet the requirements of analog circuits, the RS3221
series device provides low noise, high PSRR, low
quiescent current, and low line and load transient
response.
The device is designed to work with a 1-µ F input and
a 1-µF output ceramic capacitor (no separate noise
bypass capacitor required). An external noise bypass
capacitor connected to the device’s BP pin can further
reduce the noise level.
Other features include a 10nA logic-controlled
shutdown mode, foldback current limit and thermal
shutdown protection.
The RS3221 series is available in Green UTDFN-1x1-
4, SOT23-3, SOT23-5, SOT353(SC70-5) and SOT89-
3L(L-Type) package. It operates over an ambient
temperature range of -40°C to +85°C.
Device Information
(1)
PART
NUMBER
PACKAGE
BODY SIZE
(NOM)
RS3236
UTDFN-1×1-4
1.00mm×1.00mm
SOT23-3
1.60mm×2.92mm
SOT23-5
1.60mm×2.92mm
SOT353(SC70-5)
1.25mm×2.10mm
SOT89-3L
2.45mm×4.50mm
(1) For all available packages, see the orderable addendum at the
end of the data sheet.
