DZDH0401DW-7 - 40V Ideal Diode Controller SOT-363 | Diodes Inc
部品番号: DZDH0401DW-7 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1.3 | $1.30 |
| 10 | $1.17 | $11.70 |
| 100 | $1.04 | $104.00 |
| 500 | $0.94 | $470.00 |
| 1,000 | $0.85 | $850.00 |
DZDH0401DW-7 概要
An ideal diode controller is a power management IC that replaces a conventional rectifier diode with a MOSFET-based switch, eliminating the fixed ~0.7V forward voltage drop of silicon diodes. In the power management hierarchy, it sits between power sources and loads, enabling ORing of supplies, battery feeding, and reverse-polarity protection with millivolt-level forward losses instead of diode drops, greatly improving power efficiency in low-voltage, high-current rails.
Key features include the internal differential amplifier and P-MOS gate controller that compare IN and OUT voltages; when the forward differential exceeds approximately 34mV (typical), the gate drive turns the MOSFET fully on to minimize conduction losses. When VIN falls below VOUT, the controller rapidly pulls the gate high to block reverse current, providing high isolation and reverse discharge protection. The -50V negative rating makes it suitable for input protection against reverse-battery and inductive kickback events.
Technically, the DZDH0401DW operates as a precision comparator plus gate driver loop: forward mode regulates the MOSFET to behave like a low-loss diode, while reverse mode turns the P-channel MOSFET off. A VBIAS pin supports local biasing of the MOSFET gate. Maximum power dissipation is 300mW, adequate for the controller itself since power is handled by the external MOSFET.
Typical applications include N+1 redundant power supply ORing, battery-backup feeds in industrial and telecom equipment, reverse-battery protection in automotive and portable devices, solar-panel blocking diodes, and high-side power-path management.
Design tip: select a P-channel MOSFET whose VGS(max) exceeds the worst-case supply differential and keep the IN-OUT sense traces short for fast reverse-current shutdown.
This page synthesizes distributor pricing, stock data, and engineering design notes not found in the manufacturer datasheet alone.
ドロップイン代替品: DZDH0401DW-7 — 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:
DZDH0401DWQ-7
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
DZDH0401DW-7 最大定格＆電気的特性
| 機能 | Ideal Diode Controller (drives external P-channel MOSFET) |
| Operating Voltage Range | 0 V to 40 V |
| Reverse Voltage Protection | -50 V |
| Forward Regulation Threshold | ~34 mV (typ) |
| トポロジー | N+1 ORing / 1:1 OR Controller |
| パッケージ | SOT-363 (SC-70-6) |
| ピン数 | 6 |
| Maximum Power Dissipation | 300 mW |
| 動作温度範囲 | -65 C to +150 C |
| Package Dimensions | 2.15 mm x 1.3 mm x 0.95 mm |
| 実装タイプ | Surface Mount |
| Packaging | Tape and Reel (T&R), 3000 units |
| RoHS ステータス | Compliant |
| Application | Power ORing, reverse battery protection, redundant supply feeds |
| External MOSFET | P-channel enhancement MOSFET (user supplied) |
DZDH0401DW-7 2.15 mm x 1.3 mm x 0.95 mm ピン配置ガイド
DZDH0401DW-7 (2.15 mm x 1.3 mm x 0.95 mm パッケージ) のピン配置。 このパワーデバイスは、ゲート、ドレイン、ソース端子を備えています。非極性パッケージの場合、正確なピン1の向きとフットプリントの詳細については、メーカーのデータシートを参照してください。主な用途には、電源設計、モータ駆動、負荷スイッチングがあります。
詳細なピン配置データはありません: DZDH0401DW-7.
詳細は データシート をご参照ください。
主な用途
DZDH0401DW-7 の用途: 6 件s: N+1 Redundant Power Supply ORing, Reverse Battery Protection, Battery Backup / UPS Power Feeds, Solar Panel Blocking Diode Replacement, Industrial PLC and Control Cabinet Power Paths, Portable and Wearable Device Power Switching.
N+1 Redundant Power Supply ORing
In server, telecom, and industrial racks with N+1 redundant power supplies, each supply output feeds a common bus through an ideal diode built from the DZDH0401DW-7 and a P-channel MOSFET. The controller's ~34mV typical forward regulation keeps conduction loss far below a Schottky diode's 0.3-0.5V drop, so at 5A the MOSFET solution wastes under 0.2W instead of 2W or more. When one supply fails or its voltage sags, the controller turns its MOSFET off within microseconds, isolating the faulted rail and letting the healthy supplies carry the load. The 0V-40V range covers common 12V, 24V, and 28V bus architectures.
おすすめ
Reverse Battery Protection
Portable, automotive, and industrial devices exposed to battery mis-insertion or reversed wiring benefit from the DZDH0401DW-7's -50V reverse voltage rating. Placed in series with the battery input driving a P-channel MOSFET, the controller passes power normally at ~34mV forward drop during correct polarity, then blocks reverse current when input polarity flips. Unlike a conventional series diode that dissipates P = I x 0.7V continuously, the MOSFET solution keeps losses negligible, extending battery runtime and eliminating heatsinks. The -65C to +150C operating range handles engine-bay and outdoor industrial environments where reverse-connection faults occur in the field.
おすすめ
Battery Backup / UPS Power Feeds
Battery-backup feeds in security panels, meters, and small UPS systems use the DZDH0401DW-7 to seamlessly OR a battery with a mains-derived supply. The controller's fast comparator loop senses the IN-OUT differential and blocks reverse discharge the instant the main supply collapses, preventing the battery from feeding back into a failed charger - the reverse discharge protection described in the Diodes Incorporated datasheet. The 34mV typical forward drop maximizes usable battery capacity on 12V and 24V sealed-lead-acid or LiFePO4 stacks. The tiny SOT-363 (2.15mm x 1.3mm) footprint suits compact controller boards where a power diode's thermal pad would not fit.
おすすめ
Solar Panel Blocking Diode Replacement
In solar harvesting circuits for IoT gateways, street lights, and remote sensors, a blocking diode prevents nighttime battery discharge into the panel. Replacing that diode with a DZDH0401DW-7 plus P-channel MOSFET recovers the panel's diode drop: at 2A, a Schottky wastes about 0.8W while the ideal diode wastes roughly 68mW at the ~34mV typical threshold. The 40V maximum input covers typical 12V and 24V panel open-circuit voltages with margin, and the -65C to +150C range tolerates rooftop thermal swings. The SOT-363's small footprint eases integration into MPPT or charge-controller PCBs.
おすすめ
Industrial PLC and Control Cabinet Power Paths
Programmable logic controllers and control cabinets often merge a 24V DIN-rail supply with a backup or secondary feed. The DZDH0401DW-7's 0V to 40V operating range directly covers 24V industrial buses with transient margin, and its ideal diode action avoids the 1.5-2W per rail dissipation of series Schottky diodes at multi-amp loads, reducing cabinet heat. Its differential-amplifier gate control regulates the MOSFET smoothly during supply switchover, minimizing bus disturbance to sensitive I/O modules. The 3,000-piece tape and reel suits volume industrial builds, and the -65C to +150C rating covers unconditioned cabinet environments.
おすすめ
Portable and Wearable Device Power Switching
Handheld instruments, wearable electronics, and portable test gear juggle USB, battery, and adapter inputs. The DZDH0401DW-7's SOT-363 package (2.15mm x 1.3mm x 0.95mm, 6 pins) fits dense power-path layouts, ORing sources with ~34mV typical forward loss - critical for battery runtime versus a 0.4V Schottky drop that can consume several percent of a 3.7V cell voltage. Its 300mW dissipation rating is sufficient since load current passes through the external MOSFET, not the controller. Fast reverse-current blocking prevents adapter unplug glitches from back-feeding the battery rail, a common failure mode in dual-source portable designs.
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: DZDH0401DW-7 — 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 | DZDH0401DWQ-7 |
|---|---|---|
| Package | SOT-363 (SC-70-6) | SOT-363 (SC-70-6) - same |
| Brand | Diodes Incorporated | Diodes Incorporated |
| Operating Voltage Range | 0 V to 40 V | 0 V to 40 V |
| Forward Threshold | ~34 mV (typ) | ~34 mV (typ) |
| Qualification Grade | Standard (commercial/industrial) | Automotive qualified |
主な差別化要因
- -50V reverse voltage withstand （vs Generic Schottky ORing diode)
- Ultra-compact 6-pin SOT-363 footprint （vs DZDH0401DWQ-7)
- Standard grade vs automotive variant trade-off （vs DZDH0401DWQ-7)
設計ノート
Select the external P-channel MOSFET so that its VGS(max) rating exceeds the worst-case IN-to-OUT differential at turn-off; the DZDH0401DW-7 drives the gate between IN and the MOSFET source, so gate-source stress is bounded by the supply swing. Also ensure the MOSFET's continuous drain current comfortably exceeds your load with derating, since the controller itself dissipates almost nothing (300mW limit applies to the SOT-363 controller die). Verify VBIAS pin connection per the datasheet application schematic - an incorrect bias network is the most common bring-up failure.
Keep the IN and OUT sense traces short and route them directly to the MOSFET drain and source pads rather than sharing high-current copper runs, so the comparator sees the true MOSFET terminal voltages without IR-drop error. Place a small ceramic bypass capacitor (typically 0.1uF to 1uF, per the datasheet typical application) close to the IC. Provide a solid ground return for the controller; noisy grounds can cause chatter near the 34mV regulation threshold.
Estimated: for a 24V ORing rail at 5A through a P-MOSFET with 20mOhm RDS(on), forward drop is I x RDS(on) = 0.1V and MOSFET dissipation is 0.5W - far better than a Schottky diode at roughly 2.5W. The DZDH0401DW-7 controller dissipates only milliwatts in the SOT-363, so thermal design effort should focus on the external MOSFET and its copper pour, not the controller. Confirm transient load currents stay within the MOSFET's SOA.
コンプライアンス情報
RoHS compliance per Diodes Incorporated standard product listing (DZDH0401DW family, -7 suffix). Other compliance attributes not stated in the provided web data.
