TPS61240DRVR - 5V 450mA 3.5MHz Synchronous Boost Converter | TI
部品番号: TPS61240DRVR ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $2.18 | $2.18 |
| 10 | $1.92 | $19.20 |
| 100 | $1.55 | $155.00 |
| 500 | $1.28 | $640.00 |
| 1,000 | $1.05 | $1,050.00 |
| 3,000 | $0.86 | $2,580.00 |
TPS61240DRVR 概要
A step-up (boost) converter is a switched-mode power supply topology that produces an output voltage higher than its input voltage by storing energy in an inductor and releasing it into a capacitor through a switching element. The synchronous variant replaces the conventional Schottky rectifier with a low-side MOSFET, achieving higher efficiency at light loads and removing the need for an external diode. The TPS61240DRVR specifically targets portable battery-powered applications such as those powered by one-cell Li-Ion / Li-Polymer or three-cell alkaline/NiCd/NiMH chemistries.
Key differentiating features include a 500 mA input valley current limit, ultra-low 30 µA quiescent current for extended battery life, internal soft-start to limit inrush, and a power-good indicator with input-to-output isolation. The DRV package is only 2 mm × 2 mm in footprint, which is critical for wearables, mobile phones, and USB-OTG supplies where PCB area is at a premium. The exposed pad provides a low thermal-resistance path to dissipate up to ~1 W continuously.
The quasi-constant on-time valley current-mode control loop provides fast transient response and excellent load regulation while minimizing output ripple. The high-side P-FET synchronous switch eliminates the rectifier forward drop, pushing peak efficiency beyond 90% at moderate loads. The internal compensation is designed to work with a 1 µH nominal inductor and 10 µF input/output capacitors.
Typical applications include USB-OTG supplies from a Li-Ion cell, 5 V bias for GPS modules, RFID readers, audio codec pre-amps in portable media players, low-power MCU cores in IoT sensor nodes, and white-LED drive rails. The wide input range (2.3 V to 5.5 V) covers all common single-cell battery chemistries including deeply discharged Li-Ion (2.5 V) and fresh alkaline (3 × 1.5 V = 4.5 V).
When designing with the TPS61240DRVR, choose a 1 µH shielded inductor with low DCR to preserve efficiency. Place the input capacitor within 2 mm of the VIN and PGND pins, and route the output capacitor return directly to the exposed pad to minimize switching noise coupling into sensitive analog circuits downstream.
This page synthesizes distributor pricing, drop-in WSON-6 alternatives, and practical layout notes not collected on the manufacturer datasheet alone, giving procurement and design engineers a single reference for cross-functional review.
ドロップイン代替品: TPS61240DRVR — 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: TPS61240DRVR （同一形状・フットプリント） — 相違点: Efficiency, MSL Level, Output Voltage, Package, Switching Frequency.
クイック比較ツール — 並列比較する代替部品を選択:
TPS61241DRVR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS61240DRVT
✅ ドロップイン✓ 在庫あり
$0.92 / 個
データシートを見る →TPS61040DRVTG4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS61161ADRVR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS61240DRVR 最大定格＆電気的特性
| トポロジー | Synchronous Step-Up (Boost) |
| 出力電圧 | 5 V (fixed) |
| 入力電圧範囲 | 2.3 V to 5.5 V |
| 最大出力電流 | 450 mA |
| Input Valley Current Limit | 500 mA |
| スイッチング周波数 | 3.5 MHz (typical, up to 4 MHz listed in marketing copy) |
| 静止電流 | 30 µA (typical) |
| 効率 | Up to 90% (typical at VIN 3.3V, IOUT 200mA) |
| Control Scheme | Quasi-constant on-time valley current mode |
| 動作温度範囲 | -40 °C to +125 °C |
| パッケージ | 6-pin WSON (DRV) 2 mm × 2 mm with exposed thermal pad |
| 実装タイプ | Surface Mount |
| MSLレベル | 1 (per JEDEC J-STD-020) |
| ソフトスタート | Internal, fixed |
| Power Good Indicator | Yes |
| RoHS ステータス | Compliant |
| Lead-Free | Yes (Pb-Free) |
TPS61240DRVR ピン構成
| ピン 1 | VIN — Input supply voltage (2.3 V to 5.5 V) |
| ピン 2 | NC — Not connected internally; leave floating or tie to GND |
| ピン 3 | EN — Enable input (active high); pull low to disable the converter |
| ピン 4 | PGND — Power ground; connect to the exposed thermal pad and the input/output capacitor returns |
| ピン 5 | VOUT — 5 V regulated output; connect to COUT and to the load |
| ピン 6 | SW — Switch node; connect to the 1 µH boost inductor between VIN and VOUT |
| ピン PAD | EP — Exposed thermal pad (PGND); must be soldered to the PCB ground plane for thermal dissipation |
主な用途
TPS61240DRVR の用途: 7 件s: USB-OTG 5 V Supply from Li-Ion Battery, Portable Audio Codec Pre-Amp Power Rail, IoT Sensor Node and BLE Beacon Supply, GPS Module Bias Supply, Handheld RFID Reader Power, Industrial Sensor / 4-20 mA Loop Isolator Bias, White-LED Driver Bias for Wearable Displays.
USB-OTG 5 V Supply from Li-Ion Battery
The TPS61240DRVR is the canonical solution for USB-OTG 5 V supply generation from a single-cell Li-Ion / Li-Polymer battery (3.0-4.2 V). The 5 V fixed output, 450 mA continuous load capability, and 2.3 V to 5.5 V input range cover both the lowest discharged Li-Ion (2.5 V) and the highest fully charged (4.2 V) conditions. The 3.5 MHz switching frequency allows a 1 µH chip inductor small enough to fit beside the USB connector in a mobile phone or tablet reference design, and the 30 µA quiescent current keeps standby drain negligible when no USB device is plugged in. Compared with a discrete boost + LDO solution, the TPS61240DRVR eliminates the LDO and reduces BOM count to 3 external components (L, CIN, COUT). Designers should place the input capacitor within 2 mm of the VIN pin to suppress the input ripple that would otherwise feed back into the battery protection IC.
おすすめ
Portable Audio Codec Pre-Amp Power Rail
The TPS61240DRVR's synchronous topology and 5 V fixed output make it well suited to powering portable audio codec pre-amplifiers and headphone amplifiers from a 3.7 V Li-Polymer cell. The 3.5 MHz switching frequency lies far above the 20 Hz to 20 kHz audio band, so the converter's fundamental and harmonics are easily filtered by the audio chain's inherent bandwidth; no audible whistle is generated. The exposed thermal pad allows continuous 1 W dissipation in the 2 mm × 2 mm footprint, sufficient for sustained playback of a 32 Ω headphone load at moderate volume. The internal soft-start prevents an inrush pop at the audio output when the headphone amp is enabled. For best PSRR, pair the TPS61240DRVR with a small ferrite bead + 10 µF post-filter on the 5 V rail feeding the codec AVDD pin.
おすすめ
IoT Sensor Node and BLE Beacon Supply
Battery-powered IoT sensor nodes and Bluetooth Low Energy beacons demand always-on 5 V rails for sensors, while sipping microamps when the radio is asleep. The TPS61240DRVR's 30 µA quiescent current enables months of standby runtime from a CR2032 or small Li-Po cell when the host MCU powers down the rest of the system. The synchronous boost generates the 5 V rail needed by many sensor modules (e.g. VOC gas sensors, PM2.5 optical particle counters) from a single Li-Ion cell without the losses of a charge pump. The internal power-good signal can wake the host MCU when the rail is stable, eliminating the need for an external supervisor. For ultra-low-power sensor designs, disable the converter with the EN pin and wake the host every few seconds to take a measurement.
おすすめ
GPS Module Bias Supply
Active GPS antennas and many GPS receiver modules (u-blox, Quectel, MediaTek-based) require a clean 5 V bias-tee rail or a 5 V module supply that is often derived from the host system's 3.7 V Li-Ion battery. The TPS61240DRVR delivers a regulated 5 V from 3.0-4.2 V input with low output ripple, ensuring that the GPS L1 / L5 band noise figure is not degraded by power-rail switching spurs. The 450 mA continuous load handles the peak current draw during GPS fix acquisition (often 50-80 mA) with substantial headroom. The DRV package's 2 mm × 2 mm footprint fits beside the GPS module on a typical wearable or asset-tracker layout. Route the 5 V bias output directly to the GPS antenna SMA connector with a 100 Ω feed resistor for active-antenna bias-tee operation.
おすすめ
Handheld RFID Reader Power
UHF and HF RFID reader modules typically require a 5 V supply at 200-400 mA peak during tag interrogation, while the host handheld is powered from a 3.7 V Li-Ion battery. The TPS61240DRVR's 450 mA continuous current rating supports sustained RFID read bursts without entering thermal shutdown. The exposed pad dissipates the ~0.7 W continuous dissipation (3.7 V → 5 V at 400 mA ≈ 0.52 W) within the 2 mm × 2 mm footprint. The synchronous rectification achieves above 90% efficiency at 3.7 V input, which translates directly to extended battery runtime across thousands of tag reads. The internal power-good output can be tied to the RFID module's enable input to ensure clean startup sequencing.
おすすめ
Industrial Sensor / 4-20 mA Loop Isolator Bias
In 4-20 mA current-loop measurement systems, isolated sensor front-ends often require a small, regulated 5 V bias rail generated locally from a 3.3 V logic rail or a 3.6 V Li-SoCl2 primary cell. The TPS61240DRVR provides this isolated 5 V bias in a footprint small enough to fit on a 6 mm × 8 mm loop-powered sensor PCB. The 3.5 MHz switching frequency avoids interference with the 4-20 mA loop's measurement bandwidth, and the synchronous topology eliminates the rectifier diode drop that would otherwise cost 200-300 mV of headroom. The exposed pad allows continuous operation at elevated industrial ambient temperatures up to +85 °C without thermal de-rating. Pair with a digital isolator and a 16-bit ADC for a complete IEC 61000-compliant loop transmitter.
おすすめ
White-LED Driver Bias for Wearable Displays
Wearable displays (smart-watch OLEDs, AR glasses microLEDs) require a 5 V bias rail to drive the backlight LED string current. The TPS61240DRVR generates this rail from a 3.7 V Li-Polymer cell, while its small 2 mm × 2 mm DRV package leaves room for the LED string driver IC and inductor on a flex PCB. The 30 µA quiescent current minimizes standby drain when the display is off, and the internal soft-start prevents an inrush current spike that could brown-out the host MCU. For brightness modulation, drive the EN pin with a PWM signal from the host MCU at 1 kHz to achieve >1000:1 dimming ratio; the TPS61240DRVR's internal soft-start absorbs the resulting converter cycling without audible noise.
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: TPS61240DRVR — 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 | TPS61241DRVR | TPS61240DRVT | TPS61240YFFR | TPS61040DRVTG4 |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 6-WSON (DRV) 2x2 mm | 6-WSON (DRV) 2x2 mm - same | 6-WSON (DRV) 2x2 mm - same | 6-DSBGA (YFF) - different package, not pin-compatible | 6-WSON (DRV) 2x2 mm - same |
| Output Voltage | 5 V fixed | 5 V fixed | 5 V fixed | 5 V fixed | 5 V fixed |
| Output Current (max) | 450 mA | 450 mA (600 mA valley limit) | 450 mA | 450 mA | ~400 mA |
| Input Voltage Range | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 6.0 V |
| Switching Frequency | 3.5 MHz (4 MHz marketing) | 3.5 MHz | 3.5 MHz | 3.5 MHz | Up to 1 MHz |
| Quiescent Current | 30 µA | 30 µA | 30 µA | 30 µA | ~40 µA |
| Reel Quantity | 3000 (DRVR) | 3000 | 250 (DRVT) | 3000 (YFFR) | 250 |
主な差別化要因
- Higher input valley current limit headroom （vs TPS61241DRVR)
- Footprint compatibility with TPS61240DRVT (same package, different reel code) （vs TPS61240DRVT)
- Higher switching frequency enables smaller inductor （vs TPS61040DRVTG4)
- Synchronous rectification eliminates external Schottky diode （vs TPS61161ADRVR (LED driver boost))
設計ノート
Place the 1 µH boost inductor within 2 mm of the SW pin (Pin 6), and place the 10 µF input and output ceramic capacitors within 2 mm of their respective pins (VIN on Pin 1, VOUT on Pin 5). The exposed thermal pad must be soldered to a continuous top-layer ground pour to achieve the rated thermal performance and to provide the lowest-impedance return path for switching currents. Avoid routing analog signal traces under the inductor or SW node; route them on the opposite side of the PCB on inner layers. Use X5R or X7R 10 µF / 10 V ceramic capacitors (e.g. GRM188R61A106K from Murata) to minimize DC-bias derating.
Estimated: At VIN = 3.0 V, VOUT = 5 V, IOUT = 300 mA continuous, the converter dissipates approximately (5 V - 3.0 V) × 0.3 A × (1 - efficiency) ≈ 0.6 W assuming 90% efficiency. The DRV package has a θJA of approximately 65 °C/W on a 1 oz copper 4-layer JEDEC test board, resulting in a junction-temperature rise of ~39 °C above ambient. Continuous operation at +85 °C ambient yields a junction temperature of ~124 °C - within the 125 °C absolute maximum. Reduce load or VIN to keep TJ below 110 °C for reliable long-term operation. The exposed pad must be soldered for these numbers to hold.
Do not omit the input capacitor - the TPS61240DRVR requires a minimum 4.7 µF ceramic at VIN (10 µF recommended) to suppress switching noise that would otherwise feed back into the source battery and cause the input rail to ring at the SW node. Do not use an inductor with DCR above 100 mΩ or efficiency will drop 5-8% at full load. Do not pull EN above VOUT + 0.3 V or the internal ESD diode will clamp and source current from VOUT back into EN. Do not operate above the absolute-maximum VIN of 6.0 V or the device will permanently damage. Do not load VOUT above 500 mA continuous or the valley current limit will trip and VOUT will droop.
The TPS61240DRVR's SW node has fast edges (typical 1-2 ns rise/fall time) which can couple into nearby analog traces through parasitic capacitance. Keep a keep-out zone of at least 3 mm around the SW node and inductor on all layers. If the SW node must be routed through inner layers, use a guard ground trace on both sides. For USB-OTG applications, route the 5 V output directly to the USB connector with a ferrite bead + 10 µF post-filter to clean up the 3.5 MHz fundamental ripple to below 20 mVpp, which is required by USB 2.0 specifications.
コンプライアンス情報
RoHS and lead-free status per TI product page; halogen-free status not explicitly stated by TI for this part number; not AEC-Q100 qualified (industrial / consumer grade). For automotive applications requiring AEC-Q100, consult TI for the TPS61240-Q1 family.
