LDO Regulator. RP1207 Datasheet

RP1207 Regulator. Datasheet pdf. Equivalent

RP1207 Datasheet
Recommendation RP1207 Datasheet
Part RP1207
Description Ultra-Fast CMOS LDO Regulator
Feature RP1207; Preliminary RP1207 2A, Ultra-Low Dropout, Ultra-Fast CMOS LDO Regulator General Description The R.
Manufacture RichPower
Datasheet
Download RP1207 Datasheet




RichPower RP1207
Preliminary
RP1207
2A, Ultra-Low Dropout, Ultra-Fast CMOS LDO Regulator
General Description
The RP1207 is a high-performance, 2A LDO regulator,
offering extremely high PSRR and ultra-low dropout. Ideal
for portable RF and wireless applications with demanding
performance and space requirements.
The RP1207 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power
applications, critical in hand-held wireless devices.
The RP1207 consumes less than 0.1uA in shutdown mode
and soft start function to prevent inrush current. The other
features include ultra-low dropout voltage, high output
accuracy, current limiting protection, and high ripple
rejection ratio. Available in the SOP-8 (Exposed Pad)
package.
Ordering Information
RP1207
Package Type
SP : SOP-8 (Exposed Pad)
Operating Temperature Range
G : Green (Halogen Free with Commer-
cial Standard)
Features
Low Quiescent Current (Typically 380uA)
Soft Start
< 0.1uA Standby Current When Shutdown
Low Dropout Voltage: 670mV at 2A
Wide Operating Voltage Ranges : 2.5V to 5.5V
Ultra Fast Load Transient
Tight Load and Line Regualtion
Current Limit Protection
Thermal Shutdown Protection
1uF MLCC Output Capacitor Stable
High Power Supply Rejection Ratio
RoHS Compliant and 100% Lead (Pb)-Free
Applications
CDMA/GSM Cellular Handsets
Battery-Powered Equipment
Laptop, Palmtops, Notebook Computers
Hand-Held Instruments
Mini PCI & PCI-Express Cards
PCMCIA & New Cards
Portable Information Appliances
Marking Information
For marking information, contact our sales representative
directly or through a Richpower distributor located in your
area.
Note :
Richpower 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.
Pin Configurations
(TOP VIEW)
POK 8 GND
EN 2
7 FB
GND
VIN 3
9 6 VOUT
NC 4
5 NC
SOP-8 (Exposed Pad)
RP1207-01P April 2009
1



RichPower RP1207
RP1207
Typical Application Circuit
Preliminary
VIN
CIN
1uF
Chip Enable
POK
VIN VOUT
RP1207
FB
EN
GND
POK
100K
VOUT
COUT
R1 1uF
R2
Figure 1. Adjustable Operation
VOUT =
0.8 x
(1 + R1
R2
) Volts
Function Pin Description
Pin No.
Adjustable Output Pin Name
Voltage
Pin Function
1
POK
POK output. Indicates regulation.
2 EN Chip enable (Active-High).
3 VIN Supply input.
4 NC No Internal Connection.
5 NC No Internal Connection.
6 VOUT
7 FB
8 GND
Exposed Pad (9) NC
Regulator Output.
Set the output voltage by external feedback resistors, the output voltage will be:
VOUT
=
0.8
×
(1+
R1)
R2
Volts
Ground.
No Internal Connection. The exposed pad must be soldered to a large PCB and
connected to GND for maximum power dissipation.
RP1207-01P April 2009
2



RichPower RP1207
Function Block Diagram
Preliminary
RP1207
EN
POK
VREF
Shutdown and
Logic Control
-
Error
Amplifier
MOS Driver
Current-Limit
and Thermal
Protection
Power Good
VIN
VOUT
GND
FB
RP1207-01P April 2009
3







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