RP123x Series
250 mA Low Noise and Low Supply Current LDO Regulator
No.EA-508-190326
OVERVIEW
The RP123x is a LDO regulator that provides low output noise, high ripple rejection and fast response
characteristics, achieved by low supply current. This device is suitable not only for noise-sensitive
applications such as high-performance analog circuits, but also for various applications.
KEY BENEFITS
Achieves Low Noise, High PSRR and Fast Response.
Provides Saving Space by Adopting of 4-pin Small Package without Noise Bypass Capacitor.
Provides Long-Duration of Operation for Battery-powered Equipment by Low Supply Current of 9.5 µA
(Typ.), despite the low-noise LDO.
KEY SPECIFICATIONS
Input Voltage Range (Max.Rating):1.9 V to 5.5 V (6.0 V)
Output Voltage Range:
Output Voltage Accuracy:
Supply Current:
1.2 V to 4.8 V (0.1 V step)
±0.8% (VSET ≥ 1.8 V, Ta = 25°C)
Typ. 9.5 µA
Output Noise:
Typ. 8 µVrms (IOUT = 250 mA)
Ripple Rejection:
Typ. 90 dB (f = 1kHz)
Typ. 85 dB (f = 10kHz)
Typ. 65 dB (f = 100kHz)
Dropout Voltage:
Typ. 0.090 V (IOUT = 250 mA, VSET = 2.8 V, RP123Z)
Typ. 0.105 V (IOUT = 250 mA, VSET = 2.8 V, RP123K)
Thermal Shutdown Protection (Detection Temp. Typ.165°C)
Inrush Current Limit at Typ.150 mA for appr.700μs period after startup
1.0 µF or more (No Need of Noise Bypass Capacitor)
Protection Features:
Ceramic Capacitor (CIN, COUT):
PACKAGE
TYPICAL APPLICATIONS
VOUT
VDD
VOUT
RP123x
VIN
CIN
COUT
CE GND
CE Control
WLCSP-4-P8
DFN(PLP)1010-4
0.64 x 0.64 x 0.36 (mm)
1.0 x 1.0 x 0.6 (mm)
Without a bypass capacitor for noise
APPLICATIONS
● Mobile Phones and Tablets, Digital Cameras, Audio Devices, and Battery-powered Equipment
● RF Modules
● Clock Generator: VCO, PLL, etc.
● Noise-sensitive Devices: ADC, DAC
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