LDO Regulator. RP1222 Datasheet

RP1222 Regulator. Datasheet pdf. Equivalent

RP1222 Datasheet
Recommendation RP1222 Datasheet
Part RP1222
Description 300mA Adjustable Output Voltage CMOS LDO Regulator
Feature RP1222; RP1222 300mA Adjustable Output Voltage CMOS LDO Regulator General Description The RP1222 is designe.
Manufacture RichPower
Datasheet
Download RP1222 Datasheet




RichPower RP1222
RP1222
300mA Adjustable Output Voltage CMOS LDO Regulator
General Description
The RP1222 is designed for portable RF and wireless
applicaiton with demanding performance and space
requirements. The RP1222 performance is optimized for
battery-powered systems to deliver low noise and low
quiescent current. Regulator ground current increase only
slightly in dropout, further prolonging the battery life. The
RP1222 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power
applications, ciritical in hand-held wireless devices. The
RP1222 has soft start time typical 1300µs.The other
features include ultra low dropout voltage, current limiting
protection, and high ripple rejection ratio. Availabe in the
5-lead of SOT-23 package.
Features
Adjustable Output Voltage
Ultra-Fast Response in Line/Load Transient
Long Soft Start Time for Low Inrush Current
(Typically 1300µs)
< 0.1µA Standby Current When Shutdown
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
Only 1µF Output Capacitor Required for Stability
High Power Supply Rejection Ratio
RoHS Compliant and 100% Lead (Pb)-Free
Ordering Information
RP1222
Package Type
B : SOT-23-5
Operating Temperature Range
G : Green (Halogen Free with Comme-
-rcial Standard )
Output Voltage
A : High Enable without Discharge
B : High Enable with Discharge
C : Low Enable without Discharge
D : Low Enable with Discharge
Applications
Power source for battery-powered equipment
Power source for cameras, camcorders, VCRs, PDAs,
pagers, electronic data banks, and hand-held
communication equipment
Power source for appliances, which require higher
voltage than that of batteries used in the appliances
Note :
Richpower Green products are :
RoHS compliant and compatible with the current
requirements of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
For marking information, contact our sales representative
directly or through a Richpower distributor located in your
area.
Pin Configurations
(TOP VIEW)
ADJ VOUT
54
23
EN/EN GND VIN
SOT-23-5
RP1222-02P Feb 2010
1



RichPower RP1222
RP1222
Typical Application Circuit
VIN
CIN
1µF X7R
Chip Enable
VIN VOUT
VOUT
R1 COUT
1µF X7R
RP1222 ADJ
R2
EN/EN
GND
Functional Pin Description
Pin NO. Pin Name
Pin Function
1 EN/EN
Chip Enable (Active High/Low). Note that this pin is high impedance.There should be a
pull low/high 100kΩ resistor connected to GND/VIN when the control signal is floating.
2 GND
Ground.
3 VIN
Power Input Voltage.
4 VOUT
5 ADJ
Output Voltage.
Adjust Output.
Function Block Diagram
EN Shutdown
and
Soft Logic Control
Start
VREF
ADJ
+ MOS Driver
-
Error
Amplifier
Current Limit
and
Thermal Protection
RP1222B/D
Only
VIN
VOUT
GND
2 RP1222-02P Feb 2010



RichPower RP1222
RP1222
Absolute Maximum Ratings (Note 1)
Supply Voltage (VIN) ----------------------------------------------------------------------------------------------- 0.3V to 6V
Chip Enable Input Voltage (VEN) --------------------------------------------------------------------------------- 0.3V to 6V
Output Voltage (VOUT) --------------------------------------------------------------------------------------------- 0.3V to VOUT +0.3V
Adjust Output (VADJ) ----------------------------------------------------------------------------------------------- 0.3V to VOUT +0.3V
Power Dissipation, PD @ TA = 25° C
SOT-23-5 -------------------------------------------------------------------------------------------------------------- 0.4W
Package Thermal Resistance (Note 4)
SOT-23-5, θJA ------------------------------------------------------------------------------------------------------- 250°C/W
Operating Temperature Range ----------------------------------------------------------------------------------- 40°C to 85°C
Storage Temperature Range -------------------------------------------------------------------------------------- 65°C to 150°C
Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------ 260°C
ESD Susceptibility (Note 2)
HBM (Human Body Mode) --------------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ---------------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 3)
Supply Voltage VIN ------------------------------------------------------------------------------------------------------ 2.4V to 5.5V
Junction Temperature Range ------------------------------------------------------------------------------------- 40°C to 125°C
Electrical Characteristics
(VIN = VOUT + 1V, CIN = COUT = 1uF, TA = 25°C, unless otherwise specified)
Parameter
Input Voltage Range
ADJ Reference Voltage
Current Limit
Quiescent Current
Dropout Voltage
Line Regulation
Load Regulation
Standby Current
EN Input Bias Current
EN/EN Threshold
Symbol
VIN
VADJ
IL IM
IQ
VDROP
VLI NE
VLOAD
ISTBY
IIBSD
VIL
VIH
Test Conditions
VIN = 5V, IOUT = 100mA
ROUT = 1Ω
IOUT = 0mA
IOUT = 200mA ,VOUT > 2.8V
IOUT = 300mA ,VOUT > 2.8V
VIN = (VOUT +1V) >2.8V
IOUT = 1mA
1mA < IOUT < 300mA
VEN = GND or Shutdown
VEN = GND or VIN
Min
2.4
0.788
360
--
--
--
Typ Max Units
-- 5.5 V
0.8 0.812 V
-- 650 mA
120 160 µA
170 200 mV
220 300 mV
-- -- 0.3 %
-- -- 0.6 %
-- 0.01 1 µA
-- 0 100 nA
-- -- 0.4 V
1.2 -- -- V
To be continued
RP1222-02P Feb 2010
3





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