Document
RP111x Series
Good Transient Response Low Voltage 500mA LDO
NO.EA-241-150204
OUTLINE
The RP111x Series are CMOS-based LDO regulators featuring 500mA output current. The input voltage is as low as 1.4V and the output voltage can be set from 0.7V. Due to a built-in 0.46Ω (at VOUT=2.8V) on-resistor, RP111x can provide a low dropout voltage. RP111x also features an excellent line transient response, ripple rejection at 75dB, and low noise. The output voltage accuracy is as high as ±0.8% and the temperature drift coefficient of output voltage is low at ±30ppm/C. The accuracy of the output voltage of RP111x includes the temperature characteristics and the load transient response has been improved. The typ. and max value of under/overshoot for various output current are shown in the typical characteristics in the datasheet, therefore the accuracy of the output voltage estimation will be easy on the actual operating cases.
In addition to a fold-back protection circuit built into conventional regulators, RP111x contains a thermal shutdown circuit and an inrush current limit circuit. SOT-23-5 and SOT-89-5 packages, a 1.2mm square DFN1212-6 package are available.
FEATURES
Supply Current ......................................................Typ. 80A Standby Current....................................................Typ. 0.1A Dropout Voltage ....................................................Typ. 0.23V (IOUT500mA, VOUT2.5V) Ripple Rejection....................................................Typ. 75dB (f1kHz)
Typ. 70dB (f10kHz) Output Voltage Accuracy.......................................0.8% (VOUT ≥1.8V) Output Voltage Temperature Coefficient ...............Typ. 30ppm/C (VOUT ≥1.8V) Line Regulation .....................................................Typ. 0.02%/V Packages ..............................................................DFN1212-6, SOT-23-5, SOT-89-5, Input Voltage Range .............................................1.4V to 5.25V Output Voltage Range...........................................0.7V to 3.6V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.) Built-in Foldback Protection Circuit.......................Typ. 50mA (Current at short mode) Thermal Shutdown Temperature...........................165C Inrush Current Limit ..............................................Typ.400mA (for 180s after start-up) Ceramic capacitors are recommended to be used with this IC .....1.0F or more
APPLICATIONS
Power source for portable communication equipment. Power source for electrical appliances such as cameras, VCRs and camcorders. Power source for battery-powered equipments. Power source for electrical home appliances.
1
RP111x
NO.EA-241-150204
BLOCK DIAGRAMS
RP111xxx1B VDD
Vref Current Limit
Thermal Shutdown
CE
VOUT VDD VFB
GND CE
RP111xxx1D
Vref Current Limit
Thermal Shutdown
VOUT VFB
GND
SELECTION GUIDE
The output voltage, auto discharge function, package for the ICs can be selected at the user’s request.
Product Name
Package
Quantity per Reel
Pb Free
Halogen Free
RP111Lxx1-TR
DFN1212-6
5,000 pcs
Yes
Yes
RP111Nxx1-TR-FE
SOT-23-5
3,000 pcs
Yes
Yes
RP111Hxx1-T1-FE
SOT-89-5
1,000 pcs
Yes
xxx: The output voltage can be designated in the range of 0.7V(07)to 3.6V(36)in 0.1V steps. (For other voltages, please refer to MARK INFORMATIONS.)
Yes
: Auto discharge function at off state are options as follows. (B) without auto discharge function at off state
(D) with auto discharge function at off state
2
PIN CONFIGURATIONS
DFN1212-6
Top View
654
Bottom View
456
SOT-23-5
54
(mark side)
RP111x
NO.EA-241-150204
SOT-89-5
54
123
321
123
123
PIN DESCRIPTIONS
DFN1212-6
Pin No.
Symbol
Description
1
VOUT
Output Pin
2 VFB Feed Back Pin
3
GND
Ground Pin
4 CE Chip Enable Pin ("H" Active)
5 NC No connection
6 VDD Input Pin
) Tab is GND level. (They are connected to the reverse side of this IC.) The tab is better to be connected to the GND, but leaving it open is also acceptable.
SOT-23-5
Pin No 1 2 3 4 5
Symbol VDD GND CE VFB VOUT
Pin Description Input Pin Ground Pin Chip Enable Pin ("H" Active) Feed Back Pin Output Pin
SOT-89-5
Pin No
Symbol
Pin Description
1 VFB Feed Back Pin
2
GND
Ground Pin
3 CE Chip Enable Pin ("H" Active)
4 VDD Input Pin
5
VOUT
Output Pin
Under normal conditions, please connect the VOUT pin to the VFB pin. However, in the case of using the Adjustable Output Voltage Type, please follow the " Notes on the Adjustable Output Voltage Type Settings".
3
RP111x
NO.EA-241-150204
ABSOLUTE MAXIMUM RATINGS
Symbol VIN VCE VOUT IOUT
PD
Topt Tstg
Item Input Voltage Input Voltage (CE Pin) Output Voltage Output Current Power Dissipation (DFN1212-6) Power Dissipation (SOT-23-5) Power Dissipation (SOT-89-5) Operating Temperature Range Storage Temperature Range
) For Power Dissipation, please refer to PACKAGE INFORMATION.
Rating 6.0
-0.3~6.0 0.3 to VIN0.3
510 600 420 .