BD50C0AFP-CE2 - 5V 1A 35V LDO Regulator, AEC-Q100 | ROHM
部品番号: BD50C0AFP-CE2 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1.75 | $1.75 |
| 10 | $1.55 | $15.50 |
| 100 | $1.33 | $133.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.05 | $1,050.00 |
BD50C0AFP-CE2 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. As a member of the linear regulator family within voltage regulators and the broader power management IC hierarchy, the BD50C0AFP-CE2 trades efficiency for simplicity: it dissipates (VIN - VOUT) x IOUT as heat rather than switching, which yields extremely low output noise - a benefit for analog and automotive sensor rails.
Key features include a fixed 5.0 V output (no external resistor divider needed), 1 A continuous output current, internal over-current and thermal-shutdown protection circuits, and a low-saturation regulator topology that minimizes dropout loss. The TO-252-3 (DPAK) tab provides a low thermal resistance path, and the part is AEC-Q100 qualified, making it suitable for harsh automotive environments such as engine-control units and body electronics.
The architecture uses a PNP/DMOS pass element with a precision bandgap reference and error amplifier, achieving tight line/load regulation while keeping quiescent current low. Because there is no switching node, EMI emissions are near-zero compared to a DC-DC converter, eliminating the need for shielding or complex LC filtering near sensitive analog or RF circuitry.
Typical applications include automotive body-control modules, instrument-cluster power rails, sensor supplies (camera, radar, LiDAR peripherals), infotainment subsystems, and 24 V industrial bus regulation where a clean 5 V rail is needed. The AEC-Q100 qualification supports under-hood and chassis-mounted designs.
When designing with this part, ensure adequate copper pour on the DPAK tab to keep junction temperature within safe limits. At VIN = 24 V and VOUT = 5 V at 1 A the regulator dissipates about 19 W, so derate IOUT or VIN significantly for continuous operation without a heatsink.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
ドロップイン代替品: BD50C0AFP-CE2 — 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:
BD50C0AFP-C
✅ ドロップイン📋 参考代替品（カタログ未掲載）
BD33C0AFP-CE2
✅ ドロップイン📋 参考代替品（カタログ未掲載）
BA05CC0FP-E2
✅ ドロップイン📋 参考代替品（カタログ未掲載）
NCP1117DT50G
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LM1117MP-5.0/NOPB
✅ ドロップイン📋 参考代替品（カタログ未掲載）
BD50C0AFP-CE2 最大定格＆電気的特性
| 出力タイプ | Fixed, Positive |
| 出力電圧 | 5.0 V |
| 最大出力電流 | 1 A |
| 入力電圧範囲 | 6 V to 26.5 V |
| Maximum Input Voltage (Transient) | 35 V |
| 動作温度 | -40 C to +125 C |
| パッケージ | TO-252-3 (DPAK, SC-63) |
| 実装タイプ | Surface Mount |
| Protection Features | Over-current, Thermal Shutdown |
| Automotive Qualification | AEC-Q100 (per part suffix -CE2 / -C) |
| RoHS ステータス | Compliant |
BD50C0AFP-CE2 ピン構成
| ピン 1 | VIN — Input supply voltage (6 V to 26.5 V continuous, 35 V transient) |
| ピン 2 | VOUT — Regulated 5.0 V output |
| ピン 3 | GND — Ground reference |
| ピン TAB | TAB — Thermal tab - tie to GND plane for heatsinking (also internally connected to GND on most variants) |
主な用途
BD50C0AFP-CE2 の用途: 6 件s: Automotive Body Control Module (BCM), Automotive Instrument Cluster Power, Automotive Camera/Sensor 5 V Rail, Industrial 24 V Bus Regulation, Infotainment Head Unit Auxiliary Rail, HVAC Control Module Power.
Automotive Body Control Module (BCM)
The BD50C0AFP-CE2's 5 V fixed output at 1 A and AEC-Q100 qualification make it a strong fit for automotive body control modules that source power from the 12 V battery rail. With 6 V to 26.5 V continuous input (35 V transient), the regulator tolerates cold-crank and load-dump events without external TVS protection. Placed near the BCM MCU with 10 uF ceramic input/output capacitors, it provides a clean rail for CAN transceivers, relay drivers, and indicator logic. Unlike a switching converter it adds no EMI to the BCM's CAN bus, simplifying CISPR-25 emissions compliance. At 12 V nominal VIN and 5 V/0.5 A typical BCM load, dissipation is around 3.5 W - manageable with a 1 sq. in. copper pour on the DPAK tab.
おすすめ
Automotive Instrument Cluster Power
Instrument clusters require a clean 5 V rail to drive stepper-motor gauges, LCD backlights, and indicator LEDs without audible or visible noise. The BD50C0AFP-CE2's linear topology eliminates switching ripple that could couple into analog gauge drivers and audio warning chimes. Its 1 A capacity comfortably powers multiple gauge windings and the cluster microcontroller. With AEC-Q100 qualification and -40 C to +125 C operation, the regulator survives under-dash thermal environments. Place a 22 uF low-ESR output capacitor to absorb motor inrush; the 35 V transient rating protects against alternator field collapse events common in automotive electrical systems.
おすすめ
Automotive Camera/Sensor 5 V Rail
Surround-view cameras, radar modules, and ultrasonic sensors often run on a regulated 5 V supply derived from the 12 V battery rail. The BD50C0AFP-CE2 provides 1 A at 5 V with low output noise, preventing image-sensor pixel contamination from power-rail ripple that could degrade low-light performance. With 35 V transient tolerance, it survives the harsh automotive environment directly attached to the battery feed. The DPAK tab allows compact PCB placement adjacent to the camera connector. For 4-camera systems, parallel multiple BD50C0AFP-CE2 outputs with small ferrite beads to maintain isolation while keeping each regulator within its 1 A rating.
おすすめ
Industrial 24 V Bus Regulation
Many factory-automation PLCs and sensor hubs accept 24 V nominal (19 V to 30 V actual) and require an intermediate 5 V rail for logic and communication ICs. The BD50C0AFP-CE2's 26.5 V continuous and 35 V transient input makes it a direct drop-in for this conversion. At VIN = 24 V, VOUT = 5 V, IOUT = 0.5 A, dissipation is ~9.5 W - requiring a heatsink or significant copper area. The LDO's near-zero EMI output simplifies CE/UL industrial emissions compliance compared to a switching pre-regulator. Industrial temperature grade operation and integrated protection features support long-life factory deployments.
おすすめ
Infotainment Head Unit Auxiliary Rail
In automotive infotainment, the head unit requires clean auxiliary rails for Bluetooth, Wi-Fi, and audio DSP subsystems. The BD50C0AFP-CE2 supplies 5 V at 1 A from the main 12 V battery feed, with linear regulation that adds no high-frequency noise to sensitive RF and audio stages. AEC-Q100 qualification and load-dump immunity make it a robust choice for under-dash mounting. Pair the LDO with a downstream 3.3 V or 1.8 V regulator for the DSP and RF SoCs. The DPAK footprint is small enough to place near each audio codec, minimizing PCB trace impedance.
おすすめ
HVAC Control Module Power
HVAC modules in vehicles combine blower-motor drivers, temperature sensors, and a microcontroller - all needing a stable 5 V supply from the 12 V battery. The BD50C0AFP-CE2's 1 A output and AEC-Q100 rating suit this compact, thermally-constrained environment. Its low-saturation (low-dropout) topology maximizes efficiency at low battery voltages (cold-crank at 6 V minimum). The thermal-shutdown and over-current protection features protect against blower-motor inrush faults. Place a 22 uF output capacitor to handle the brief surge when the blower PWM driver switches on, ensuring the LDO stays in regulation.
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: BD50C0AFP-CE2 — 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 | BD50C0AFP-C | BD33C0AFP-CE2 | BA05CC0FP-E2 | NCP1117DT50G | LM1117MP-5.0/NOPB |
|---|---|---|---|---|---|---|
| Package | TO-252-3 (DPAK) | TO-252-3 (DPAK) - same | TO-252-3 (DPAK) - same | TO-252-3 (DPAK) - same | TO-252-3 (DPAK) - same | TO-252-3 (DPAK) - same |
| Brand | ROHM Semiconductor | ROHM Semiconductor | ROHM Semiconductor | ROHM Semiconductor | onsemi | Texas Instruments |
| Output Voltage | 5.0 V (fixed) | 5.0 V (fixed) | 3.3 V (fixed) | 5.0 V (fixed) | 5.0 V (fixed) | 5.0 V (fixed) |
| Maximum Output Current | 1 A | 1 A | 1 A | 1 A | 1 A | 1 A |
| Protection Features | OCP + Thermal Shutdown | OCP + Thermal Shutdown | OCP + Thermal Shutdown | OCP + Thermal Shutdown | OCP + Thermal Shutdown | Thermal Shutdown |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | 0 C to +125 C | 0 C to +125 C |
主な差別化要因
- Automotive-grade 35 V transient tolerance （vs NCP1117DT50G)
- Integrated over-current protection with thermal shutdown （vs LM1117MP-5.0/NOPB)
- Wide operating temperature range (-40 C to +125 C) （vs NCP1117DT50G)
設計ノート
Estimated: At VIN = 24 V, VOUT = 5 V, IOUT = 1 A, the BD50C0AFP-CE2 dissipates (24-5) x 1 = 19 W. The TO-252-3 (DPAK) tab typically achieves around 30-40 C/W junction-to-ambient on 1 sq. in. of 2-oz copper. Junction temperature rise = 19 W x 35 C/W = 665 C - far exceeding the 150 C limit. For continuous 1 A operation, VIN must be limited to roughly 8 V or substantial external heatsinking is required. At 12 V nominal VIN and 0.5 A typical automotive loads, dissipation is about 3.5 W - well within thermal limits with adequate copper pour.
Use a star-ground topology tying the DPAK tab, pin 3, and load ground to a single low-impedance ground plane. Place the input capacitor (10 uF X7R ceramic recommended) within 5 mm of the VIN pin and the output capacitor (22 uF low-ESR ceramic or tantalum) within 5 mm of the VOUT pin. The DPAK thermal tab must be soldered to a copper pour of at least 1 sq. in. (approximately 645 sq. mm) for proper heatsinking. Avoid routing high-current load traces through small vias - use multiple parallel vias to the ground plane to minimize inductance.
Do not exceed the 26.5 V continuous / 35 V transient VIN rating - 12 V automotive battery rails can produce load-dump transients above 35 V without external TVS protection. Ensure output capacitor ESR remains within the stable operating region (typically 0.01 ohm to 1 ohm for this part family) - very low-ESR ceramics may cause instability in some LDO topologies. Always confirm the AEC-Q100 grade on the specific part suffix ordered - the -CE2 suffix indicates the automotive-grade reel orientation, not necessarily the qualification itself.
コンプライアンス情報
AEC-Q100 qualified per the -C suffix in the base part number. RoHS compliant per ROHM product page. Halogen-free status not explicitly stated in retrieved data.
