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RP123 Series
Low Noise and Low Supply Current 250mA LDO Regulator

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Product Specifications

The RP123 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.

  • 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.

FEATURES

Input Voltage Range (Max. Rating) 1.9 V to 5.5 V (6.0 V)
Supply Current Typ. 9.5 µA
Standby Current Typ. 0.01 µA
Output Voltage Range 1.2 V to 4.8 V (0.1 V step)
Output Voltage Accuracy ±0.8% (VSET ≥ 1.8 V, Ta = 25°C)
Output Noise Typ. 8 μVrms (IOUT = 250 mA)
Ripple Rejection Typ. 90 dB (f = 1 kHz)
Typ. 85 dB (f = 10 kHz)
Typ. 65 dB (f = 100 kHz)
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 Typ. 150 mA for appr. 700 µs period after start-up
Ceramic Capacitor (CIN, COUT) 1.0 µF or more
Packages WLCSP-4-P8, DFN(PLP)1010-4

APPLICATION INFORMATION

CIN,COUT: 1.0 µF

TYPICAL CHARACTERISTICS

Ripple Rejection vs. Frequency

VSET=2.8 V, VIN=3.8 V, COUT=Ceramic 1.0 µF, Ripple=0.2 Vp-p, Ta=25°C

PIN DESCRIPTION

WLCSP-4-P8

WLCSP-4-P80.64 mm × 0.64 mm
A1 VDD
A2 VOUT
B1 CE
B2 GND

DFN(PLP)1010-4

DFN(PLP)1010-41.0 mm × 1.0 mm
1 VOUT
2 GND
3 CE
4 VDD

*) The tab is substrate level (GND).


RP123 Series for Consumer

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

SELECTION GUIDE

The set output voltage and the auto-discharge function are user-selectable.

Product Name   Package Quantity per Reel
RP123Zxx1#-TR-F Consumer WLCSP-4-P8 5,000
RP123Kxx1#-TR Consumer DFN(PLP)1010-4 10,000
  • xx … Specify the set output voltage (VSET) within the range of 1.2 V to 4.8 V in 0.1 V steps.
    The voltage in 0.05 V step is shown as follows.
    Ex. 1.85 V: RP123x181#5
  • # … Specify whether with the auto-discharge or not.
    B: without the auto-discharge function
    D: with the auto-discharge function

* Auto-discharge function quickly lowers the output voltage to 0 V, when the chip enable signal is switched from the active mode to the standby mode, by releasing the electrical charge accumulated in the external capacitor.

DOCUMENT/CONTACT

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Technical Support

Package *1 Marking Reliability *2
WLCSP-4-P8 RP123Z RP123Z
DFN(PLP)1010-4 RP123K RP123K

*1: The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and land pattern (foot pattern).
*2: Reliability file includes a reliability test report and a reflow profile.

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