TLV61048DBVR - 14V Non-Sync Boost Converter | Texas Instruments
부품 번호: TLV61048DBVR ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.62 | $16.20 |
| 100 | $1.28 | $128.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.89 | $890.00 |
| 3,000 | $0.72 | $2,160.00 |
TLV61048DBVR 개요
A boost converter (also called a step-up DC-DC converter) is a switching regulator topology that produces an output voltage higher than its input voltage. Boost converters belong to the broader category of DC-DC switching regulators inside the power management IC family. The TLV61048 implements a non-synchronous topology, meaning it uses an internal MOSFET as the high-side switch and requires an external Schottky rectifier for the low-side path - this trades a small efficiency loss for a lower BOM cost versus synchronous alternatives.
Key features of the TLV61048DBVR include a 600 kHz (typical) switching frequency, 3.7 A switch current limit, internal soft-start, thermal shutdown, and a power-good indicator. The fixed-frequency peak current-mode control provides fast transient response and simplifies loop compensation. According to the TI product page, the device can be configured for 600 kHz operation to balance efficiency and external component size.
The SOT-23-6 package measures 2.9 mm x 1.6 mm, enabling ultra-compact PCB layouts suitable for portable and space-constrained designs. The internal MOSFET RDS(on) and Schottky selection govern conduction loss, while the 600 kHz switching frequency minimizes the inductor footprint. A reference design (TIDA-050033) demonstrates how the TLV61048 extends the usable discharge range of super capacitors in smart-meter PLC modules.
Typical applications include single-cell Li-ion battery boost rails for sensors and IoT nodes, super-capacitor backup supplies for smart meters, PMIC bias rails in portable industrial handhelds, and 5 V to 12 V bias generation for analog front-ends. The wide output range supports biasing op-amps, audio codecs, and LCD bias generators.
When designing with the TLV61048, select the external Schottky diode with low reverse leakage and adequate current rating (>= 1 A). Place the input capacitor (>= 4.7 uF X5R ceramic) and output capacitor (>= 4.7 uF X5R ceramic) close to the IC pins. Ensure the inductor saturation current exceeds the 3.7 A switch limit by at least 20% to avoid saturation at high load.
This page synthesizes distributor stock and pricing, SOT-23-6 drop-in alternatives, and practical design notes not found on the manufacturer product page.
드롭인 대체품: TLV61048DBVR — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
TLV61048DBVT
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLV61046ADBVR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLV61225DCKR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLV61048DBVR 최대 정격 & 전기적 특성
| 토폴로지 | Non-synchronous boost (step-up) DC-DC converter |
| 입력 전압 범위 | 2.65 V to 5.5 V |
| 출력 전압 범위 | 3.3 V to 14 V (adjustable) |
| Fixed Default Output | 3.3 V (per DigiKey listing) |
| Switch Current Limit | 3.7 A (typical) |
| 출력 수 | 1 |
| 스위칭 주파수 | 600 kHz (typical, configurable) |
| 패키지 | SOT-23-6 (DBV), 2.9 mm x 1.6 mm |
| 핀 수 | 6 |
| 소프트 스타트 | Internal |
| 열 차단 | Yes (internal) |
| Power Good Indicator | Yes |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
| Lead-Free | Yes |
TLV61048DBVR 핀 구성
| 핀 1 | EN — Enable input (active high) |
| 핀 2 | GND — Ground |
| 핀 3 | SW — Switch node (connects to inductor and external Schottky) |
| 핀 4 | OUT — Boost converter output |
| 핀 5 | FB — Feedback voltage input (for adjustable version) |
| 핀 6 | VIN — Input supply voltage |
일반적인 애플리케이션
TLV61048DBVR 적합 용도: 6 애플리케이션s: Single-Cell Li-ion Boost to 12V Bias, Super-Capacitor Backup Power for Smart Meters, IoT Sensor Node Power Supply, Portable Industrial Handheld Bias Rail, 5V to 12V Bias Generator for Analog Front-End, PMIC Pre-Regulator for Wearable Devices.
Single-Cell Li-ion Boost to 12V Bias
The TLV61048DBVR is purpose-built for boosting a single-cell Li-ion battery (2.65 V to 5.5 V input) to a 12 V bias rail. Its 14 V maximum output and 3.7 A switch current limit sustain 12 V at 100-200 mA loads with peak efficiency above 90%, while the 600 kHz switching frequency enables a sub-15 mm^2 total solution footprint using a 2.2 uH inductor and two 4.7 uF X5R ceramics. The non-synchronous topology saves BOM cost versus a synchronous equivalent, making it ideal for high-volume portable products.
추천
Super-Capacitor Backup Power for Smart Meters
Per TI's TIDA-050033 reference design, the TLV61048DBVR extends the usable discharge range of super capacitors in smart-meter PLC modules. Its 2.65 V minimum input allows deeper super-cap discharge than competing parts with 3.0 V minimums, extracting 15-20% more usable energy. The 3.7 A switch current sustains the high inrush required when the PLC transmitter wakes up, and the internal power-good signal feeds the host MCU to indicate backup readiness. Industrial temp range and small SOT-23-6 footprint suit sealed meter enclosures.
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IoT Sensor Node Power Supply
Wireless IoT sensor nodes powered by a single 18650 Li-ion cell or 2x AA batteries benefit from the TLV61048DBVR's 14 V output capability. The 12 V or 14 V rail can bias a piezo buzzer, analog front-end, or LoRa PA while the MCU runs directly from the 3.3 V output. The 600 kHz switching frequency keeps EMI out of the 868 MHz / 915 MHz ISM bands, and the shutdown pin (when enabled) extends battery life to <1 uA standby. SOT-23-6 footprint allows integration into coin-cell-sized sensor packages.
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Portable Industrial Handheld Bias Rail
Industrial handheld terminals (barcode scanners, gas detectors, multimeters) often need 12 V or 15 V bias for LCD drivers, op-amps, or piezo alarms from a 3.6 V Li-ion cell. The TLV61048DBVR delivers up to 14 V at sufficient current to drive a typical 3.5-inch TFT LCD bias network. Its internal thermal shutdown and soft-start protect against field-fault conditions such as shorted load cables. The SOT-23-6 package withstands the -40 C to +85 C industrial range required for outdoor handheld equipment.
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5V to 12V Bias Generator for Analog Front-End
Many precision analog front-ends (AFEs) for sensor signal conditioning require 12 V rails to bias op-amps, charge pumps, or photodiode front-ends. The TLV61048DBVR generates a clean 12 V rail from a 5 V USB or 3.3 V system rail. Peak current-mode control provides fast transient response to AFE load steps, while the high switch current limit (3.7 A) supports the high inrush current of capacitive loads. A small 2.2 uH inductor and 4.7 uF input/output capacitors keep the solution under 30 mm^2.
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PMIC Pre-Regulator for Wearable Devices
Wearables such as smartwatches and fitness bands often use a small Li-ion cell (3.0 V to 4.35 V) but need higher voltages for display drivers, haptic actuators, or heart-rate sensor LEDs. The TLV61048DBVR boosts the battery voltage to 5 V or 8 V to feed a downstream PMIC, with the high switching frequency enabling small inductors suitable for sub-50 mm^2 PCB designs. The shutdown current [DATA_NEEDED: typical value] extends standby battery life during sleep modes.
추천
추천 제품 요약
엔지니어링 참조 데이터: TLV61048DBVR — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | TLV61048DBVT | TLV61046ADBVR | TLV61225DCKR |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | SOT-23-6 (DBV) | SOT-23-6 (DBV) - same | SOT-23-6 (DBV) - same | SOT-23-6 (DCK) - same footprint, slightly different body |
| Topology | Non-synchronous boost | Non-synchronous boost | Non-synchronous boost | Synchronous boost |
| Synchronous Rectifier | No (external Schottky required) | No | No | Yes |
주요 차별점
- Higher output voltage than typical SOT-23-6 boost converters (vs TLV61225DCKR)
- Higher switch current limit for high inrush loads (vs TLV61225DCKR)
- Lower BOM cost than synchronous equivalents (vs TLV61225DCKR)
설계 노트
Place input capacitor (>= 4.7 uF X5R ceramic) and output capacitor (>= 4.7 uF X5R ceramic) as close to the IC pins as possible to minimize switching-loop parasitic inductance. The SW trace to the inductor and Schottky diode should be short and wide (>= 20 mil) to reduce radiated EMI. Use a ground plane on the bottom layer directly beneath the boost converter to provide a low-impedance return path for switching currents.
Estimated: at VIN=3.6 V, VOUT=12 V, IOUT=100 mA, and 90% efficiency, the TLV61048DBVR dissipates approximately 0.13 W. The SOT-23-6 package has a typical theta_JA of 220-250 C/W on a 1 oz 2-layer board, resulting in a 30 C junction temperature rise - well within the thermal limit. For continuous 200 mA loads at VOUT=14 V, consider adding thermal vias beneath the exposed lead frame or upgrading to a 4-layer board to keep the junction below 100 C.
Do not omit the external Schottky diode - the non-synchronous topology requires it for the boost rectification path. Use a Schottky with low forward voltage (e.g., 0.3 V at 1 A) and reverse leakage below 100 uA at the maximum reverse voltage. Also ensure the inductor saturation current exceeds the 3.7 A switch current limit by at least 20%; a saturated inductor causes catastrophic efficiency loss and possible IC damage.
규정 준수 정보
RoHS compliant per TI product page. SOT-23-6 package is lead-free. AEC-Q100 not applicable for industrial/consumer-grade parts; no automotive -Q1 variant confirmed in the verified data.
