Solutions
Special Contents for Automotive Applications
Electrification of automobile by RICOH power management IC
The reason RICOH power management IC has been chosen for more than 20 years
Special Contents for IoT Devices
Supporting your IoT system construction
Ultra-low supply current / Low noise / Low electromotive force / Battery monitoring
Special Contents for Industrial Applications
RICOH's 3 approaches to industrial equipment field
Long term supply / Flexible quantity purchase / High quality and reliability
Design Support
Technical Information on Power Management ICs
Small in Size, Efficient in Heat Dissipation and Suitable for Automotive.
Ricoh's Thermal Design Support
You can analyze thermal characteristics at customer's concept design stage
Document Download
About RICOH Electronic Devices
RP122 Series
Low Noise and Low Supply Current 400mA Voltage Regulator (LDO Regulator)
- PLP
- RoHS
Product Specifications
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.
FEATURES
| Input Voltage Range (Max. Rating) | 1.9 V to 5.5 V (6.0V) |
|---|---|
| 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. 0.145 V (IOUT = 400 mA, VSET = 2.8 V, RP122Z) Typ. 0.170 V (IOUT = 400 mA, VSET = 2.8 V, RP122K) |
| Thermal Shutdown Protection | Detection Temp. Typ. 165°C |
| Inrush Current Limit | Typ. 250 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
0.64 mm × 0.64 mm| A1 | VDD |
| A2 | VOUT |
| B1 | CE |
| B2 | GND |
DFN(PLP)1010-4
1.0 mm × 1.0 mm| 1 | VOUT |
| 2 | GND |
| 3 | CE |
| 4 | VDD |
*) The tab is substrate level (GND).
RP122 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
PRODUCT LONGEVITY PROGRAM
RP122K operate PRODUCT LONGEVITY PROGRAM.
This program has been introduced to help customers select the most appropriate part for applications that require long life cycles.
SELECTION GUIDE
The set output voltage and the auto-discharge function are user-selectable.
| Product Name | Package | Quantity per Reel | |
|---|---|---|---|
| RP122Zxx1#-TR-F |  |
WLCSP-4-P8 | 5,000 |
| RP122Kxx1#-TR |  |
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: RP122x181#5 - # … Specify whether with the auto-discharge or not.
B: without the auto-discharge function
D: with the auto-discharge function
DOCUMENT/CONTACT
| Package *1 | Marking | Reliability *2 |
|---|---|---|
| WLCSP-4-P8 | RP122Z | RP122Z |
| DFN(PLP)1010-4 | RP122K | RP122K |
*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.
Inquiry about products
Contact Us by Mail
Contact Us by Phone
Inquiry about purchase
Purchase, Request for Samples and Documents
Sample Online
Related Links for Automotive
Quality Assurance
Copyright © RICOH Electronic Devices Co., Ltd. All Rights Reserved.