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RP122 Series
Low Noise and Low Supply Current 400mA LDO Regulator
The RP122 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.
Specs & Datasheets
| Consumer | |
|---|---|
| Input Voltage Range | 1.9 V to 5.5 V (6.0 V) |
| Operating Temperature Range | -40°C to 85°C (125°C) |
| 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% (Ta = 25°C, VSET ≥ 1.8 V) |
| Dropout Voltage | Typ. 0.145 V (IOUT = 400 mA, VSET = 2.8 V, RP122Z) Typ. 0.170 V (IOUT = 400 mA, VSET = 2.8 V, RP122K) |
| Output Current | 400 mA |
| Ripple Rejection | Typ. 90 dB (f = 1 kHz)Typ. 85 dB (f = 10 kHz) Typ. 65 dB (f = 100 kHz) |
| Output Noise Voltage | Typ. 8 µVrms (IOUT = 250 mA) |
| Package | WLCSP-4-P8, DFN(PLP)1010-4 |
Protections / Functions
| TSD | Reverse | Current Limit | ISC | Inrush | Constant Slope | ECO mode | Auto Discharge | External Driver |
|---|---|---|---|---|---|---|---|---|
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Technical Documents
Ripple Rejection vs. Frequency
VSET=2.8 V, VIN=3.8 V, COUT=Ceramic 1.0 µF, Ripple=0.2 Vp-p
High Ripple Rejection Demonstration
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| RP122Zxx1x-TR-F |
|
WLCSP-4-P8 | RP122Z | RP122Z-F |
| RP122Kxx1x-TR |
|
DFN(PLP)1010-4 | RP122K | RP122K |
C
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Refer to the datasheets for the details on the product.
The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
Please contact us or our distributors for unpublished reliability information.
Sample / Buy
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Buy, Request for Samples, Request for Information Materials
Authorized Distributors
Please contact your local distributors for any sales-related inquiry such as price, stock, delivery, etc.
Functional Description
| TSD | Thermal Shutdown Function |
|---|---|
| Reverse Current Protection | Reverse Current Protection |
| Current Limit | Overcurrent Protection |
| ISC | Short Current Protection |
| Inrush Current Limit | Inrush Current Protection |
| Constant Slope | Constant Slope Function |
| ECO mode | ECO Function |
| Auto Discharge | Auto Discharge Function |
| External Driver | External Output Driver Transistor |