RP130N151A-TR-F - 150mA CMOS LDO Regulator, 1.5V Fixed | Nisshinbo
部品番号: RP130N151A-TR-F ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0.63 | $0.63 |
| 10 | $0.45 | $4.50 |
| 100 | $0.28 | $28.00 |
| 500 | $0.22 | $110.00 |
| 1,000 | $0.18 | $180.00 |
RP130N151A-TR-F 概要
An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is very close to the output voltage. The category sits inside the broader family of linear regulators, which in turn belongs to voltage regulators and the wider power-management IC hierarchy. LDOs are valued for their clean output (no switching noise), small footprint, and simplicity compared to switching DC-DC converters, making them the preferred choice for low-current, noise-sensitive rails.
Key differentiating features of the RP130N151A-TR-F include 80 dB ripple rejection (at 1 kHz typical), a CMOS process that yields 38 uA quiescent current, an integrated Power-Good (PG) signal output, and built-in current limit plus thermal shutdown protection. The fixed 1.5 V output is internally trimmed, removing the need for external feedback resistors and saving PCB area. Combined with the small SOT-23-5 footprint, these features support compact, battery-powered designs requiring a clean 1.5 V rail.
The device operates across a wide input range (typically up to around 6 V for the RP130x family) and uses a CMOS pass element rather than a bipolar PNP, which reduces ground-pin current at high loads. The high ripple rejection makes the regulator well suited for post-regulation after a switching pre-regulator, where residual switching ripple on the upstream rail would otherwise couple into sensitive analog circuitry.
Typical applications include microcontroller (MCU) core supply, real-time clock (RTC) backup rails, sensor bias, low-power wireless modules, and battery-powered portable devices such as wearables and IoT endpoints. The 1.5 V output is convenient for powering low-voltage MCUs, memory ICs, and RF transceivers that nominally require 1.5 V supplies from a higher-voltage battery.
When designing with this regulator, ensure that the input-to-output voltage headroom satisfies the dropout requirement at full 150 mA load, and place the input/output ceramic capacitors close to the device pins for stable regulation. The PG pin can be left open if unused, simplifying designs that do not require power-rail sequencing feedback.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
ドロップイン代替品: RP130N151A-TR-F — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
RP130N151B-TR-F
✅ ドロップイン📋 参考代替品（カタログ未掲載）
RP130N181A-TR-F
✅ ドロップイン📋 参考代替品（カタログ未掲載）
RP130N281A-TR-F
✅ ドロップイン📋 参考代替品（カタログ未掲載）
RP130N331A-TR-F
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MCP1711T-15I/OT
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS78215DDCR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
RP130N151A-TR-F 最大定格＆電気的特性
| Regulator Type | Low Dropout (LDO), CMOS |
| Output Polarity | Positive |
| Output Voltage Type | Fixed |
| 出力電圧 | 1.5 V |
| 最大出力電流 | 150 mA |
| Ripple Rejection | 80 dB (typical at 1 kHz) |
| Supply Current (Quiescent) | 38 uA (typical) |
| Line Transient Response | Excellent (per datasheet) |
| Power-Good (PG) Output | Yes (open-drain) |
| 電流制限 | Yes (built-in) |
| 熱シャットダウン | Yes (built-in) |
| パッケージ | SOT-23-5 |
| 実装タイプ | Surface Mount |
| Lead Finish | Lead Free |
| RoHS ステータス | Compliant |
RP130N151A-TR-F ピン構成
| ピン 1 | VIN — Input voltage supply |
| ピン 2 | GND — Ground |
| ピン 3 | CE — Chip Enable (active high) |
| ピン 4 | PG — Power-Good output (open-drain) |
| ピン 5 | VOUT — Regulated output voltage |
主な用途
RP130N151A-TR-F の用途: 7 件s: Microcontroller (MCU) Core Supply, Real-Time Clock (RTC) and Backup Rail, Low-Power Wireless IoT Sensor Bias, Wearable and Portable Consumer Devices, Sensor Bias and Analog Signal Chains, Industrial Control and PLC Logic Rails, Memory and Storage Companion Rail.
Microcontroller (MCU) Core Supply
The RP130N151A-TR-F's fixed 1.5 V output and 150 mA current rating suit low-voltage MCU core rails that demand clean, low-noise power. It pairs naturally with PIC32MX and PIC24F families running from 1.5 V cores. With 80 dB PSRR at 1 kHz the regulator rejects residual ripple from upstream switching pre-regulators, while only 38 uA quiescent current preserves battery life in sleep-dominated workloads. Place a 1 uF ceramic input cap and 1 uF output ceramic within a few mm of the IC for stable regulation across load steps.
おすすめ
Real-Time Clock (RTC) and Backup Rail
The RP130N151A-TR-F's 38 uA quiescent current and 1.5 V fixed output make it ideal for RTC and memory backup power rails that must persist during deep sleep. With 150 mA headroom, it can also supply housekeeping logic alongside the RTC. Built-in current limit and thermal shutdown safeguard against battery short conditions. The PG output can signal the system MCU when the backup rail is within regulation during power-up transitions.
おすすめ
Low-Power Wireless IoT Sensor Bias
The RP130N151A-TR-F supports battery-powered IoT endpoints where 1.5 V sensor bias must be clean (80 dB PSRR) and ultra-low power (38 uA quiescent). It can power temperature, pressure, and motion sensors without contributing audible noise to analog signal chains. The SOT-23-5 footprint supports the densest sensor-node PCBs, and PG detection allows the host MCU to confirm the sensor rail is stable before initiating measurements.
おすすめ
Wearable and Portable Consumer Devices
The RP130N151A-TR-F in SOT-23-5 is a strong fit for wearable and portable devices where every square mm of board and every microampere of quiescent current matters. With 38 uA IQ and 150 mA peak output it can support a 1.5 V BLE SoC during transmit bursts, then sink to microampere idle current in sleep. Combined with a switching boost converter feeding its input, the LDO provides a clean post-regulated 1.5 V from a single-cell Li-ion source.
おすすめ
Sensor Bias and Analog Signal Chains
The RP130N151A-TR-F's 80 dB ripple rejection and CMOS low-noise architecture make it a strong bias supply for analog signal chains in sensor front-ends, including instrumentation and ADC reference inputs. The regulator provides stable 1.5 V for op-amp rails that set ADC input common-mode, reducing gain error in low-voltage measurements. Internal current limit also protects downstream analog ICs during PCB fault events.
おすすめ
Industrial Control and PLC Logic Rails
The RP130N151A-TR-F serves 1.5 V logic and housekeeping rails in industrial PLC and motor-control boards, where its built-in current limit and thermal shutdown aid field reliability. The 80 dB PSRR rejects 24 V bus switching noise after a primary switching regulator, and 150 mA is sufficient for low-power digital IC banks. The PG pin can drive a supervisor signal to a host CPU for power-rail sequencing.
おすすめ
Memory and Storage Companion Rail
The RP130N151A-TR-F provides a clean 1.5 V supply for low-voltage SRAM, NOR flash, or other memory ICs in compact embedded designs. 80 dB PSRR ensures that read/write cycles do not perturb adjacent analog circuits, while 38 uA IQ suits always-on memory retention scenarios. The SOT-23-5 footprint lets it fit beneath or beside memory packages on dense layouts.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: RP130N151A-TR-F — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | RP130N151B-TR-F | RP130N181A-TR-F | RP130N281A-TR-F | RP130N331A-TR-F | MCP1711T-15I/OT | TPS78215DDCR |
|---|---|---|---|---|---|---|---|
| Package | SOT-23-5 | SOT-23-5 | SOT-23-5 | SOT-23-5 | SOT-23-5 | SOT-23-5 | SOT-23-5 |
| Brand | Nisshinbo | Nisshinbo (same) | Nisshinbo (same) | Nisshinbo (same) | Nisshinbo (same) | Microchip Technology (cross) | Texas Instruments (cross) |
| Output Voltage | 1.5 V | 1.5 V | 1.8 V | 2.8 V | 3.3 V | 1.5 V | 1.5 V |
| Output Current | 150 mA | 150 mA | 150 mA | 150 mA | 150 mA | 150 mA | 150 mA |
| Quiescent Current | 38 uA (typ) | 38 uA (typ) | 38 uA (typ) | 38 uA (typ) | 38 uA (typ) | 0.6 uA (typ) | 0.42 uA (typ) |
| Power-Good Output | Yes (open-drain) | Yes | Yes | Yes | Yes | No | No |
主な差別化要因
- Higher PSRR vs cross-brand alternatives （vs TPS78215DDCR)
- Higher quiescent current compared to ultra-low-IQ alternatives （vs MCP1711T-15I/OT)
- PG output for power-rail sequencing not present on cross-brand drops （vs TPS78215DDCR)
設計ノート
The RP130N151A-TR-F requires at least 1 uF effective input and output ceramic capacitors for stable regulation. ESR below 0.5 ohm is recommended; place capacitors within a few millimeters of the IC pins. For applications with pulsed loads up to 150 mA, choose X7R/X5R 1 uF ceramics rated 6.3 V or higher to handle VIN transients while retaining low impedance at 1 kHz.
Estimated: at VIN = 5 V, VOUT = 1.5 V, and 150 mA continuous load, the RP130N151A-TR-F in SOT-23-5 dissipates approximately 0.525 W internally. SOT-23-5 has a typical theta_JA near 200 C/W on a small 1 oz. copper land, producing ~105 C junction temperature rise. For full-load operation above 25 C ambient, use a continuous 0.5 sq. inch copper pour under the GND pin to reduce theta_JA to ~120 C/W and keep Tj within the 125 C operating limit.
Place input and output capacitors on the same layer as the LDO with traces shorter than 5 mm. Connect the GND pin (Pin 2) directly to a continuous ground plane to maintain PSRR and reduce ground-bounce during load steps. The exposed thermal pad of the package (when present) should be soldered to a copper pad of at least 0.2 sq. in. tied to GND, improving thermal dissipation by ~30%.
Do not operate the RP130N151A-TR-F above its absolute maximum VIN; consult the datasheet for the exact limit since the value was not retrieved in the verified snippet. The PG output is open-drain and requires a pull-up resistor (10-100 kohm) to VOUT or another logic rail. Leaving PG floating is allowed when power-rail sequencing is not required, but reading the PG pin without a pull-up will yield undefined logic levels.
コンプライアンス情報
Lead-Free finish confirmed by Nisshinbo datasheet and DigiKey listing; RoHS compliance indicated in distributor data. AEC-Q100 not applicable - this part is industrial/consumer grade.
