RP1202
300mA, Ultra-Low
Noise, Ultra-Fast CMOS LDO Regulator
General Description
The RP1202 is designed for portable RF and wireless
applications with demanding performance and space
requirements. The RP1202 performance is optimized for
battery-powered systems to deliver ultra low noise and
low quiescent current. A noise bypass pin is available for
further reduction of output noise. Regulator ground current
increases only slightly in dropout, further prolonging the
battery life. The RP1202 also works with low-ESR ceramic
capacitors, reducing the amount of board space necessary
for power applications, critical in hand-held
wireless
devices. The RP1202 consumes less than 0.01μA in
shutdown mode and has fast turn-on time less than 50μs.
The other features include ultra low dropout voltage, high
output accuracy, current limiting protection, and high ripple
rejection ratio. Available in the 5-lead of SC-70 and SOT-
23 packages.
Features
Ultra-Low-Noise for RF Application
Ultra-Fast Response in Line/Load Transient
Quick Start-Up (Typically 50μs)
μ
< 0.01μA Standby Current When Shutdown
μ
Low Dropout : 220mV @ 300mA
Wide Operating Voltage Ranges : 2.5V to 5.5V
TTL-Logic-Controlled Shutdown Input
Low Temperature Coefficient
Current Limiting Protection
Thermal Shutdown Protection
μ
Only 1μF Output Capacitor Required for Stability
High Power Supply Rejection Ratio
Custom Voltage Available
RoHS Compliant and 100% Lead (Pb)-Free
Applications
CDMA/GSM Cellular Handsets
Battery-Powered Equipment
Laptop, Palmtops, Notebook Computers
Hand-Held Instruments
PCMCIA Cards
Portable Information Appliances
Ordering Information
RP1202-
Package Type
U5: SC-70-5
B : SOT-23-5
Operating Temperature Range
P : Pb Free with Commercial Standard
G: Green ( Halogen Free with Commer-
Marking Information
cial Standard
For marking information, contact our sales representative
Output Voltage
15 : 1.5V
16 : 1.6V
:
34 : 3.4V
35 : 3.5V
1H : 1.85V
2H : 2.85V
Note :
RichPower Pb-free and Green products are :
−RoHS
compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
−Suitable
for use in SnPb or Pb-free soldering processes.
−100%matte
tin (Sn) plating.
EN
3
4
BP
GND
2
directly or through a RichPower distributor located in your
area.
Pin Configurations
(TOP VIEW)
VIN
1
5
VOUT
SC-70-5/SOT-23-5
RP1202-03 February 2009
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
