TPS61040DBVR


28V 400mA boost converter, 1.8-6V in, 1MHz, 28μA Iq, SOT-23-5

9862

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制造商零件:

TPS61040DBVR

包装:

SOT-23-5 / DBV (2.9 x 1.6 x 1.15mm)

品牌:
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说明

产品概览

The TPS61040DBVR from Texas Instruments is a 28V, 400mA switch boost converter in a SOT-23-5 package. Designed for LCD bias supply and white LED backlight applications, it operates from 1.8V to 6V input with up to 1MHz switching frequency, enabling compact solution size with small external components.

主要规格

输入电压范围 1.8V to 6V
Output Voltage Range Up to 28V
Internal Switch Current Limit 400mA
开关频率 Up to 1MHz
静态电流 28μA typ.
关机电流 1μA typ.
Internal Soft Start Yes
包装 SOT-23-5 (2.9 x 1.6mm)
工作温度 -40°C to +125°C

特点

  • 1.8V to 6V input voltage range
  • Adjustable output up to 28V
  • 400mA internal switch current limit
  • Up to 1MHz switching frequency for small inductors
  • 28μA typical no-load quiescent current
  • 1μA shutdown current
  • Internal soft start limits inrush current
  • Available in SOT-23-5 and WSON packages
  • Supports ceramic and tantalum output capacitors

应用

  • White LED backlight for small to medium LCDs
  • LCD bias supply generation
  • 3.3V or 5V to 12V boost conversion
  • Battery-powered portable equipment
  • OLED display power supplies

The TPS61040DBVR from Texas Instruments is a high-frequency boost converter dedicated for small to medium LCD bias supply and white LED backlight applications. Operating from 1.8V to 6V input, it generates output voltages up to 28V, making it ideal for dual-cell NiMH/NiCd or single-cell Li-Ion battery powered systems. The 1MHz switching frequency allows the use of small external components, while the 28μA quiescent current and optimized control scheme enable high efficiency over the entire load range.

The TPS61040 uses a current-mode pulse-frequency modulation (PFM) control scheme. When the output voltage drops below the regulation threshold set by the external resistor divider, the internal N-channel MOSFET switch turns on, storing energy in the external inductor. When the switch turns off, the inductor current flows through the external Schottky diode to the output capacitor and load. The device operates in discontinuous conduction mode (DCM) at light loads for high efficiency. The internal soft start gradually increases the switch current limit during startup to prevent excessive inrush current.

针脚 名称 类型 功能
1 SW 电源 Switch pin (connect to inductor and Schottky diode)
2 接地 电源 地面
3 FB 输入 Feedback voltage input (set output via resistor divider)
4 EN 输入 Enable input (high = on, low = shutdown)
5 VIN 电源 Input supply voltage (1.8V to 6V)
  • White LED backlight driver for 2.8-7 inch LCD panels
  • LCD positive and negative bias voltage generation
  • Single-cell Li-Ion to 12V boost for portable devices
  • OLED display power supply from battery input
  • 3.3V to 5V or 12V step-up conversion in IoT devices
制造商 部件编号 包装 说明
TI TPS61041DBVR SOT-23-5 250mA switch version, lower ripple
TI TPS61040YFFR WSON-6 2x2mm WSON package version
onsemi NCP1402SN50T1 SOT-23-5 5V fixed output boost, 200mA
微型芯片 MCP1640D-I/SN SOIC-8 Low-voltage boost, 0.65V start
Richtek RT9271AGQW SOT-23-5 25V boost for LED backlight
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认证
我们获得了多项专业认证,并建立了自己的专业检测实验室,确保交付给客户的每一件产品都符合最高质量要求。我们严格按照流程进行检测,确保产品质量稳定、参数准确。为保证原装正品,我们还与可靠的第三方检测机构合作,进行严格的质量检测。我们始终高度重视质量,完全符合行业标准、相关法规和 ISO 9001:2015 的要求。.

服务与包装

我们从合作供应链采购的所有电子元件都经过严格的进货检验。通过仔细的测试,我们确保交付给客户的所有产品都是原装正品,符合质量要求。此外,我们还保存完整的检验记录,使整个供应链流程清晰可查。.

认证
我们获得了多项专业认证,并建立了自己的专业检测实验室,确保交付给客户的每一件产品都符合最高质量要求。我们严格按照流程进行检测,确保产品质量稳定、参数准确。为保证原装正品,我们还与可靠的第三方检测机构合作,进行严格的质量检测。我们始终高度重视质量,完全符合行业标准、相关法规和 ISO 9001:2015 的要求。.