LMR64010XMFX/NOPB - 40V 1A Boost Converter SOT-23 | TI
MPN： LMR64010XMFX/NOPB ✓ 啟用中LMR64010XMFX/NOPB 概覽
A boost converter, also called a step-up regulator, is a type of DC-DC converter that produces an output voltage higher than its input. Within the power management hierarchy (boost converter -> DC-DC converter -> switching regulator -> power management IC -> semiconductor), it is a fundamental building block for generating higher voltage rails from battery or low-voltage bus inputs.
Key features include a fixed 1.6 MHz switching frequency that allows very small external inductors and capacitors, an internal 40V-rated switch supporting outputs of 16V or greater, and current-mode control providing fast transient response and simple loop compensation. The minimal power loss of the internal switch enables SOT-23 packaging, delivering industry-leading power density without heatsinking.
Technically, the current-mode architecture senses switch current cycle-by-cycle, simplifying compensation and enabling robust enable-based shutdown. Thermal shutdown and switch current-limit protection guard against fault conditions. The high 1.6 MHz operating frequency keeps switching ripple above sensitive audio and analog bands, easing output filtering.
Typical applications include OLED display bias supplies, portable battery-powered devices, LCD bias and backlight rails, and general-purpose step-up regulation to 16V-40V rails for sensors, photodiode bias, and RF circuits. Pricing is referenced as of 2026-08-29.
Design tip: keep the switch node, output diode, and output capacitor loops short to minimize EMI, use a Schottky diode rated above 40V, and select an inductor with saturation current above the 1A peak switch current.
直接替換替代品，適用於 LMR64010XMFX/NOPB — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LMR64010XMFX/NOPB （相同外形與佔位） — 差異在於 Package, RoHS Status, Output Voltage Range, Switching Frequency, Topology.
LMR64010XMF/NOPB
✅ 直接替換📋 參考替代品（不在目錄中）
LMR64010XMFX/NOPB-Q1
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →LMR62014XMFX
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TPS61040DBVR
⚡ 相同封裝 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
FAN5331SX
⚡ 相同封裝 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LMR64010XMFX/NOPB 最大額定值與電氣特性
| 拓撲 | Boost (step-up), current-mode |
| 輸入電壓範圍 | 2.7 V to 14 V |
| 輸出電壓範圍 | 3 V to 40 V (adjustable) |
| Switch Current | 1 A (internal switch) |
| Internal Switch Rating | 40 V |
| 切換頻率 | 1.6 MHz (fixed) |
| 輸出數量 | 1 |
| Control Scheme | Current-mode PWM |
| 封裝 | SOT-23-5 (DBV / SC-74A / SOT-753) |
| Pins | 5 |
| 工作溫度 | -40C to +125C |
| 安裝類型 | Surface Mount |
| 功能特色 | Enable pin, thermal shutdown, current limit |
| Supplier Device Package | SOT-23-5 |
| RoHS 狀態 | Compliant (NOPB - no Pb, RoHS) |
| Family | SIMPLE SWITCHER |
LMR64010XMFX/NOPB 腳位配置
| 腳位 1 | SW — Internal power switch node - connect inductor here |
| 腳位 2 | GND — Ground |
| 腳位 3 | FB — Feedback input from output voltage divider (1.26V reference typical) |
| 腳位 4 | EN — Enable input - logic high enables regulator |
| 腳位 5 | VIN — Input supply, 2.7V to 14V |
典型應用
LMR64010XMFX/NOPB 適用於 6 應用s: OLED Display Bias Supply, Portable Battery-Powered Devices, Photodiode and APD Bias, LCD Backlight and Panel Rails, Industrial Sensor Excitation, Automotive Front-End Bias (Q1 Variant).
OLED Display Bias Supply
OLED anode rails typically need 16V to 40V generated from a 3.7V Li-ion cell or 5V rail. The LMR64010 fits because its internal 40V-rated switch supports the full output range without an external MOSFET, and the 1.6 MHz fixed frequency permits a small 2.2 uH inductor plus compact output capacitors, fitting inside thin display modules. Placed after the battery rail with a Schottky diode and feedback divider to the FB pin, it delivers a regulated anode voltage with ripple far above the visible flicker band. Trade-off: keep load current modest since the 1A switch limits boost power at large step-up ratios.
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Portable Battery-Powered Devices
Handheld instruments and portable radios often need a 12V-24V rail from 2-4 alkaline or a Li-ion cell. The LMR64010 operates from 2.7V, so it keeps regulating as the battery discharges to end-of-life. Its SOT-23-5 package and small external components conserve PCB area, while the EN pin allows firmware power-gating to save battery in standby. Because the 1.6 MHz switching frequency reduces inductor size and keeps audible-band ripple low, it avoids acoustic noise in handheld enclosures. Design consideration: at 2.7V input, input current rises sharply for high output power, so check battery discharge capability and input trace resistance.
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Photodiode and APD Bias
Photodiode and avalanche photodiode receivers need stable 20V-40V bias rails derived from low-voltage supplies. The LMR64010's 40V internal switch covers this range directly, and the current-mode loop responds quickly to burst-mode optical traffic. Adding an RC post-filter after the boost output attenuates the 1.6 MHz switching ripple to microvolt levels suitable for sensitive TIA front ends. Because bias current is typically under a few milliamps, the converter runs at light load with high efficiency headroom. Ensure the feedback divider uses high-value resistors (e.g., 1M ohm range) to keep quiescent drain negligible on the bias node.
推薦
LCD Backlight and Panel Rails
LCD panels require 12V to 18V AVDD rails from a 5V or 12V system supply. The LMR64010 boosts efficiently to these levels with its 1A internal switch, and the fixed 1.6 MHz operation allows sub-3 mm inductor heights common in panel power boards. The current-mode control gives good line transient response when the source switches between adapter and battery. Pairing the output with a small LC filter or a linear post-regulator further cleans the analog supply for the source driver. Watch the thermal budget: at 5V-to-15V boost near full 1A switch current, verify junction temperature stays below 125C with copper pours.
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Industrial Sensor Excitation
Industrial transmitters and 4-20 mA loop instruments frequently need 24V-class excitation from a 5V or 12V local supply. The LMR64010 produces up to 40V from a 14V maximum input, bridging this gap in a 5-pin package that survives -40C to +125C industrial ambient conditions. The EN pin supports power sequencing or duty-cycled measurement schemes that reduce average system current. The internal current limit and thermal shutdown add robustness against wiring faults in the field. Because loop instruments are noise-sensitive, add a ferrite bead plus 10 uF output capacitor to attenuate switching ripple before the loop conditioning circuitry.
推薦
Automotive Front-End Bias (Q1 Variant)
For automotive subsystems such as sensor bias and small actuator supplies, the LMR64010XMFX/NOPB-Q1 offers the same 2.7V-14V input and 40V/1A switch with AEC-Q100 qualification. Cold-crank conditions drop battery voltage near 3V, inside the converter's input range, while the 40V switch tolerates load-dump-filtered 24V-class outputs. The 1.6 MHz frequency keeps EMI filtering compact, helping meet CISPR-adjacent component-level emission targets with a small LC filter. Use the Q1 suffix for new automotive designs; the standard LMR64010XMFX/NOPB serves industrial and consumer equivalents with the same footprint and schematic.
推薦
推薦產品摘要
工程參考資料，適用於 LMR64010XMFX/NOPB — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LMR64010XMF/NOPB | LMR64010XMFX/NOPB-Q1 | LMR62014XMFX | FAN5331SX |
|---|---|---|---|---|---|
| Package | SOT-23-5 (DBV / SC-74A) | SOT-23-5 (DBV) - same | SOT-23-5 (DBV) - same | SOT-23-5 (DBV) - same | SOT-23-5 (SC-74A) - same footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | onsemi |
| Input Voltage Range | 2.7V to 14V | 2.7V to 14V | 2.7V to 14V | 2.7V to 14V | 2.5V to 6V |
| Max Output Voltage | 40 V | 40 V | 40 V | 20 V | 35 V |
| Switch Current | 1 A | 1 A | 1 A | 1.4 A | 0.8 A |
| Switching Frequency | 1.6 MHz | 1.6 MHz | 1.6 MHz | 1.6 MHz | 1.4 MHz |
| Automotive Grade (AEC-Q100) | No (standard grade) | No | Yes | No | No |
| Pin Compatibility | Reference (SW/GND/FB/EN/VIN) | Pin-to-pin identical | Pin-to-pin identical | Same family pinout - verify datasheet | Different pin functions - schematic change |
主要差異化特點
- Industry-leading power density (對比FAN5331SX)
- Automotive drop-in option (對比LMR64010XMF/NOPB)
- Lower input voltage floor at full function (對比TPS61040DBVR)
設計說明
Keep the boost power loop (VIN capacitor, SW pin, Schottky diode, and output capacitor) as compact as possible. At 1.6 MHz, even a few nH of loop inductance creates switch-node ringing that radiates EMI. Place the input capacitor within 2-3 mm of VIN and GND, and route the feedback trace away from the SW node and inductor to avoid corrupting the FB signal. Use a solid ground plane under the IC with multiple via connections to the GND pin.
Select an inductor with a saturation current rating above the 1A peak switch current limit, with margin of at least 20-30%. A 2.2 uH to 10 uH shielded inductor typically suits the 1.6 MHz operation. Use a Schottky rectifier rated above 40V (e.g., 60V class) with low reverse leakage at high temperature, since leakage directly degrades light-load efficiency. Set the output voltage with a precision 1% feedback divider per the datasheet FB equation.
The SOT-23-5 package has no exposed pad, so most heat exits through the pins. At large boost ratios and high load, switch and diode conduction losses raise junction temperature; verify the junction stays below 125C with worst-case VIN, VOUT, load, and ambient. Provide generous copper area on all five pads and consider 1 oz or 2 oz copper for high-power designs. Above roughly 0.5A output-class loads at large step-up ratios, evaluate a buck-boost or discrete-FET controller instead.
合規資訊
NOPB suffix denotes No Pb (lead-free). RoHS compliant per TI product page and distributor listings. Standard grade is not AEC-Q100 qualified; the LMR64010XMFX/NOPB-Q1 variant is the automotive option.
