ホーム パワー・マネージメント AC/DC & DC/DC converters (integrated FET)

スリープ・モード搭載、高効率、スイッチト・キャパシタ、降圧 DC/DC レギュレータ

製品詳細

Iout (max) (A) 0.25 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Type Charge pump Switching frequency (min) (kHz) 475 Switching frequency (max) (kHz) 925 Features Dynamic Voltage Scaling Vout (min) (V) 1.2 Vout (max) (V) 1.575 Rating Catalog Operating temperature range (°C) -30 to 105
Iout (max) (A) 0.25 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Type Charge pump Switching frequency (min) (kHz) 475 Switching frequency (max) (kHz) 925 Features Dynamic Voltage Scaling Vout (min) (V) 1.2 Vout (max) (V) 1.575 Rating Catalog Operating temperature range (°C) -30 to 105
WSON (DSC) 10 9 mm² 3 x 3
  • High Efficiency Multi-Gain Architecture: Peak Power Efficiency >85%
  • Output Voltage Pairs: 1.2V/1.5V and 1.2V/1.575V
  • Dynamic Output Voltage Selection
  • ±3% Output Voltage Accuracy
  • Output Currents up to 250mA
  • 2.7V to 5.5V Input Range
  • Low-Supply-Current Sleep Mode
  • 55µA Quiescent Supply Current in Full-Power Mode
  • Soft-Start
  • Short-Circuit Protection in Full-Power Mode
  • Current-Limit Protection in Sleep Mode
  • WSON-10 Package (3mm × 3mm × 0.8mm)

All trademarks are the property of their respective owners.

  • High Efficiency Multi-Gain Architecture: Peak Power Efficiency >85%
  • Output Voltage Pairs: 1.2V/1.5V and 1.2V/1.575V
  • Dynamic Output Voltage Selection
  • ±3% Output Voltage Accuracy
  • Output Currents up to 250mA
  • 2.7V to 5.5V Input Range
  • Low-Supply-Current Sleep Mode
  • 55µA Quiescent Supply Current in Full-Power Mode
  • Soft-Start
  • Short-Circuit Protection in Full-Power Mode
  • Current-Limit Protection in Sleep Mode
  • WSON-10 Package (3mm × 3mm × 0.8mm)

All trademarks are the property of their respective owners.

The LM2770 is a switched capacitor step-down regulator that is ideal for powering low-voltage applications in portable systems. The LM2770 can supply load currents up to 250mA and operates over an input voltage range of 2.7V to 5.5V. This makes the LM2770 a great choice for systems powered by 1-cell Li-Ion batteries and chargers. The output voltage of the LM2770 can be dynamically switched between two output levels with a logic input pin. Output voltage pairs currently available include 1.2V/1.5V and 1.2V/1.575V. Other pairs of voltage options can be developed upon request.

LM2770 efficiency is superior to both fixed-gain switched capacitor buck regulators and low-dropout linear regulators (LDO's). Multiple fractional gains maximize power efficiency over the entire input voltage and output current ranges. The LM2770 can also be switched into a low-power sleep mode when load currents are light (≤ 20mA). In sleep mode, the charge pump is off, and the output is driven with a low-noise, low-power linear regulator.

Soft-start, short-circuit protection, current-limit protection, and thermal-shutdown protection are also included. The LM2770 is available in TI’s small 10-pin Leadless Leadframe Package (WSON-10).

The LM2770 is a switched capacitor step-down regulator that is ideal for powering low-voltage applications in portable systems. The LM2770 can supply load currents up to 250mA and operates over an input voltage range of 2.7V to 5.5V. This makes the LM2770 a great choice for systems powered by 1-cell Li-Ion batteries and chargers. The output voltage of the LM2770 can be dynamically switched between two output levels with a logic input pin. Output voltage pairs currently available include 1.2V/1.5V and 1.2V/1.575V. Other pairs of voltage options can be developed upon request.

LM2770 efficiency is superior to both fixed-gain switched capacitor buck regulators and low-dropout linear regulators (LDO's). Multiple fractional gains maximize power efficiency over the entire input voltage and output current ranges. The LM2770 can also be switched into a low-power sleep mode when load currents are light (≤ 20mA). In sleep mode, the charge pump is off, and the output is driven with a low-noise, low-power linear regulator.

Soft-start, short-circuit protection, current-limit protection, and thermal-shutdown protection are also included. The LM2770 is available in TI’s small 10-pin Leadless Leadframe Package (WSON-10).

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種類 タイトル 最新の英語版をダウンロード 日付
* データシート LM2770 High Efficiency Switched Cap Step-Down DC/DC Regulator w/Sleep Mode データシート (Rev. E) 2013年 5月 1日

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パッケージ ピン数 ダウンロード
WSON (DSC) 10 オプションの表示

購入と品質

記載されている情報:
  • RoHS
  • REACH
  • デバイスのマーキング
  • リード端子の仕上げ / ボールの原材料
  • MSL 定格 / ピーク リフロー
  • MTBF/FIT 推定値
  • 材質成分
  • 認定試験結果
  • 継続的な信頼性モニタ試験結果
記載されている情報:
  • ファブの拠点
  • 組み立てを実施した拠点

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