LM2592HVS-5.0/NOPB - 2A 60V Step-Down Switching Regulator | Texas Instruments
部品番号: LM2592HVS-5.0/NOPB ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $4.18 | $4.18 |
| 10 | $3.76 | $37.60 |
| 100 | $3.07 | $307.00 |
| 500 | $2.59 | $1,295.00 |
| 1,000 | $2.3 | $2,300.00 |
LM2592HVS-5.0/NOPB 概要
A buck (step-down) switching regulator is a switch-mode power supply topology that converts a higher DC input voltage to a lower DC output voltage by chopping the input with a power switch and smoothing the resulting pulsed waveform through an LC filter. Compared with linear regulators, buck converters achieve much higher efficiency (typically 80-90% here) because they do not dissipate VIN-VOUT as heat; the LM2592HV family sits in the hierarchy: buck regulator > switching regulator > DC-DC converter > power management IC > semiconductor.
Key specifications include ±4% output voltage tolerance over line and load, ±15% oscillator frequency tolerance, an internal current limit, and thermal shutdown. The high-voltage (HV) variant extends the maximum input to 60V, making it tolerant of 48V telecom rails and load-dump transients in 24V industrial buses. The exposed tab of the TO-263 (KTT) package provides a low thermal resistance path, supporting continuous 2A output without external heatsinking in many layouts.
Typical applications include 24V/48V industrial bus regulation, distributed power systems, battery chargers, and point-of-load conversion after a front-end AC-DC supply. The wide VIN range and integrated switch simplify designs where designers previously needed external MOSFETs, current-sense amplifiers, and gate drivers.
When designing, choose an inductor around 33 µH for 5V/2A output to minimize ripple, and use a Schottky catch diode with reverse voltage rating above VIN(MAX). Place input capacitors as close as possible to the VIN and GND pins to suppress high-frequency switching noise.
This page synthesizes distributor pricing, pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet.
ドロップイン代替品: LM2592HVS-5.0/NOPB — 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。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: LM2592HVS-5.0/NOPB （同一形状・フットプリント） — 相違点: Input Voltage Range, MSL Level, Package, RoHS Status, Switching Frequency.
クイック比較ツール — 並列比較する代替部品を選択:
LM2592HVS-5.0
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LM2592HVS-5.0/Q1
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
LM2596S-5.0/NOPB
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LM2596S-5.0
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
LM2675S-5.0/NOPB
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
LM2592HVS-5.0/NOPB 最大定格＆電気的特性
| トポロジー | Step-Down (Buck) |
| 出力タイプ | Fixed 5V |
| 入力電圧範囲 | 4.5 V to 60 V |
| 出力電圧 | 5 V |
| Output Current | 2 A |
| スイッチング周波数 | 150 kHz |
| Output Voltage Tolerance | ±4% |
| Oscillator Frequency Tolerance | ±15% |
| Standby Current (Shutdown) | 90 µA typical |
| 動作温度範囲 | -40 °C to +125 °C |
| パッケージ | TO-263-5 (KTT) / D2PAK 5-Lead + Tab |
| 実装タイプ | Surface Mount |
| 同期整流器 | No (external Schottky required) |
| 出力数 | 1 |
| Shutdown Pin | Yes (TTL-compatible) |
| Internal Current Limit | Yes |
| 熱シャットダウン | Yes |
| MSLレベル | 3 |
| RoHS ステータス | Compliant (NOPB suffix) |
| External Components Required | 4 (L, Cin, Cout, Schottky diode) |
LM2592HVS-5.0/NOPB ピン構成
| ピン 1 | VIN — Input supply voltage (4.5V to 60V) |
| ピン 2 | Output — Switched output node - connect to inductor and Schottky cathode |
| ピン 3 | Ground — Ground reference and tab connection |
| ピン 4 | Feedback — Voltage feedback (not used on fixed -5.0 version; connect to VOUT for fixed parts) |
| ピン 5 | ON/OFF — TTL-compatible shutdown pin; tie high (>1.3V) for enable, low for shutdown (~90 µA standby) |
主な用途
LM2592HVS-5.0/NOPB の用途: 6 件s: 24V Industrial Bus Point-of-Load Regulation, 48V Telecom and Distributed Power Systems, Automotive 12V Battery Rail Conditioning, Battery-Powered Portable Equipment Chargers, Appliance and White Goods Motor Control Rails, Solar Power Optimizer and MPPT Auxiliary Rails.
24V Industrial Bus Point-of-Load Regulation
The LM2592HVS-5.0/NOPB is ideally suited for stepping down a 24V industrial bus (nominal 18-32V, with load-dump transients up to 60V) to a clean 5V rail for logic, sensors, and microcontrollers. Its 4.5-60V VIN range safely absorbs 24V load-dump transients without a pre-regulator, and the 2A output current easily supplies PLC I/O cards and HMI panels. The 150 kHz switching frequency allows use of a compact 33 µH inductor, while the external Schottky diode keeps BOM cost low. Place the input capacitor as close as possible to VIN and GND pins to suppress switching noise that could couple into adjacent analog circuitry.
おすすめ
48V Telecom and Distributed Power Systems
In 48V telecom and distributed-power architectures the LM2592HVS-5.0/NOPB serves as a primary isolated or non-isolated step-down stage delivering 5V at up to 2A to downstream POL converters. Its 60V input tolerance comfortably handles 48V nominal rails with their associated transients, while the integrated thermal shutdown and current limit protect against overload conditions. The SIMPLE SWITCHER 4-component BOM (inductor, two capacitors, Schottky diode) simplifies layout and minimizes board area compared with a controller-based buck design. For battery-backed systems, the 90 µA shutdown current minimizes quiescent drain during standby.
おすすめ
Automotive 12V Battery Rail Conditioning
For automotive 12V battery rail applications, the LM2592HVS-5.0/NOPB's automotive-grade Q1 variant delivers a regulated 5V supply tolerant of cranking transients and load-dump events up to 60V. With 2A output capability it can power infotainment head units, telematics modules, and body controllers directly from the 12V battery without pre-regulation. The fixed 150 kHz switching frequency falls outside the AM broadcast band, simplifying EMI filtering. The exposed tab on the TO-263 package provides excellent thermal performance for sustained 2A operation in the engine compartment.
おすすめ
Battery-Powered Portable Equipment Chargers
The LM2592HVS-5.0/NOPB works well as a charger-stage regulator in 12-48V battery-powered portable equipment, where its wide VIN range accommodates varying battery voltages during charge/discharge cycles. The TTL shutdown pin enables low-power standby modes, drawing only 90 µA when disabled - critical for extending battery life. With 2A output it can charge multi-cell Li-ion packs through a downstream CC/CV controller. The TO-263 surface-mount package suits space-constrained handheld designs, while the exposed tab enables efficient heat dissipation during continuous charging.
おすすめ
Appliance and White Goods Motor Control Rails
The LM2592HVS-5.0/NOPB's wide 4.5-60V input and 2A output make it well-suited for generating the 5V logic rail in appliance motor controllers from rectified mains or 24V/36V bus voltages. White goods such as washing machines, dishwashers, and HVAC blowers commonly use 24V rectified rails with significant transients; the LM2592HV absorbs these without damage. The 2A continuous output supplies gate drivers, microcontrollers, and sensor conditioning circuits. The TO-263 package's exposed tab allows heat sinking to the chassis or a small aluminum clip heatsink for continuous-duty operation.
おすすめ
Solar Power Optimizer and MPPT Auxiliary Rails
In solar power optimizers and MPPT charge controllers, the LM2592HVS-5.0/NOPB generates auxiliary 5V rails for gate drivers, microcontrollers, and communication interfaces from the high-voltage panel-side bus (typically 30-60V). Its 60V VIN tolerance directly accepts panel voltages up to 60V without requiring a separate buck stage for the control electronics. The 2A output easily powers digital control loops, OLED displays, and isolated communication interfaces. Its 90 µA shutdown current supports low-power night-time standby modes where the optimizer must consume minimal panel current to prevent reverse drain.
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: LM2592HVS-5.0/NOPB — 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 | LM2592HVS-5.0 | LM2592HVS-5.0/Q1 | LM2596S-5.0/NOPB | LM2596S-5.0 | LM2675S-5.0/NOPB |
|---|---|---|---|---|---|---|
| Package | TO-263-5 (KTT) | TO-263-5 (KTT) - same | TO-263-5 (KTT) - same | TO-263-5 (KTT) - same | TO-263-5 (KTT) - same | TO-263-5 (KTT) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Input Voltage Range | 4.5V to 60V | 4.5V to 60V | 4.5V to 60V | 4.5V to 40V | 4.5V to 40V | 6.5V to 40V |
| Output Current | 2A | 2A | 2A | 3A | 3A | 1A |
| Switching Frequency | 150 kHz | 150 kHz | 150 kHz | 150 kHz | 150 kHz | 260 kHz |
| Output Voltage | Fixed 5V | Fixed 5V | Fixed 5V | Fixed 5V | Fixed 5V | Fixed 5V |
| Automotive Grade (AEC-Q100) | No | No | Yes | No | No | No |
| RoHS / Lead Finish | NOPB (lead-free) | Leaded (SnPb) | NOPB (lead-free) | NOPB (lead-free) | Leaded (SnPb) | NOPB (lead-free) |
主な差別化要因
- 60V maximum input voltage (HV variant) （vs LM2596S-5.0/NOPB)
- Automotive grade option in same package （vs LM2592HVS-5.0/NOPB (commercial))
- Higher output current than similar parts （vs LM2675S-5.0/NOPB)
- Lower switching frequency than newer alternatives （vs LM2675S-5.0/NOPB (260 kHz))
設計ノート
Choose an inductor around 33 µH for the 5V/2A output at 150 kHz; this minimizes ripple current while keeping physical size manageable. The catch diode must be a Schottky with reverse voltage rating above VIN(MAX) of 60V (use 80V-100V rated parts for safety margin) and forward current rating above 2A continuous. A 220 µF low-ESR electrolytic or 100 µF solid polymer on the output, paired with a 0.1 µF ceramic, keeps output ripple below the ±4% VOUT tolerance window.
Estimated: At VIN = 24V, VOUT = 5V, and IOUT = 2A, conduction loss is ~3W plus ~0.5W switching loss for ~3.5W total. The TO-263 (KTT) tab has theta_JA of ~50°C/W on 1 sq inch of 2-oz copper, resulting in a ~175°C junction temperature rise above ambient - exceeding the 125°C max. For continuous 2A operation at VIN above 15V, either reduce VIN, use an LM2596HV variant, or add a clip-on heatsink to the tab. Below 15V VIN at 2A, no heatsink is required.
Place input capacitors as close as possible to the VIN and GND pins to suppress high-frequency switching noise that could couple into adjacent analog circuits. Use a ground plane under the entire switching loop (VIN → internal switch → inductor → output cap → ground) to minimize EMI; the exposed tab of the TO-263 should have multiple thermal vias to inner copper layers. Keep the feedback trace (pin 4 on ADJ version) away from the inductor and switch node to avoid noise injection into the regulation loop.
Do not exceed the absolute maximum input voltage of 60V on the LM2592HV variant - the standard LM2592 (non-HV) is limited to 40V and will be destroyed by 48V telecom rails or 24V load-dump transients above 40V. The ON/OFF pin (pin 5) is TTL-compatible; do not leave it floating as behavior is undefined. For fixed -5.0 versions, the feedback pin (pin 4) should be tied directly to VOUT; leaving it floating causes erratic output regulation.
The 150 kHz fundamental switching frequency and its harmonics fall in the AM broadcast band - if your application is sensitive to AM-band EMI, add a small LC pi-filter on the output or shield the inductor. Synchronous buck converters at higher frequencies (500 kHz-2 MHz) avoid the AM band entirely, but at higher cost. For CE/EMC compliance, place the inductor at 90° to sensitive signal traces and use a ground-plane stitching via fence around the switching node.
コンプライアンス情報
NOPB suffix denotes lead-free matte-tin finish, RoHS compliant per TI datasheet. The Q1 variant is AEC-Q100 qualified - this standard -5.0/NOPB is commercial/industrial grade only.
