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AC/DC 和 DC/DC 轉換器 (整合式 FET)

LM3262

現行

具旁路功能的 6MHz、800mA 微型可調式降壓 DC-DC 轉換器

立即訂購
產品規格表

LM3262

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -30 to 90 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 2.5 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 5700 Switching frequency (max) (kHz) 6300 Features Fixed Output Control mode Voltage mode Vout (min) (V) 0.4 Vout (max) (V) 3.6 Iq (typ) (µA) 60 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -30 to 90 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 2.5 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 5700 Switching frequency (max) (kHz) 6300 Features Fixed Output Control mode Voltage mode Vout (min) (V) 0.4 Vout (max) (V) 3.6 Iq (typ) (µA) 60 Duty cycle (max) (%) 100
DSBGA (YFQ) 9 1.96000000000000028000000000000001 mm² 1.4000000000000001 x 1.4000000000000001
  • Operates from a Single Li-Ion Cell (2.5 V to 5.5 V)
  • 6-MHz (Typical) PWM Switching Frequency
  • Adjustable Output Voltage (0.4 V to 3.6 V)
  • 800-mA Maximum Load Capability (up to 1 A in Bypass Mode)
  • High Efficiency (93% Typical at 3.8 VIN, 3.4 VOUT at 500 mA)
  • Automatic ECO/PWM/BP Mode Change
  • Current and Thermal Overload Protection
  • Multi-Function VCON Pin
    (Eliminates Need for Separate BPEN Control)
  • Soft-Start Function
  • Small Chip Inductor in 0805 (2012) Case Size
  • 25-µA (Typical) IQ in Sleep Mode
  • 5-µs (Typical) Rise Time and Fall Time for
    2-V Step
  • 9-Pin DSBGA Package
  • Operates from a Single Li-Ion Cell (2.5 V to 5.5 V)
  • 6-MHz (Typical) PWM Switching Frequency
  • Adjustable Output Voltage (0.4 V to 3.6 V)
  • 800-mA Maximum Load Capability (up to 1 A in Bypass Mode)
  • High Efficiency (93% Typical at 3.8 VIN, 3.4 VOUT at 500 mA)
  • Automatic ECO/PWM/BP Mode Change
  • Current and Thermal Overload Protection
  • Multi-Function VCON Pin
    (Eliminates Need for Separate BPEN Control)
  • Soft-Start Function
  • Small Chip Inductor in 0805 (2012) Case Size
  • 25-µA (Typical) IQ in Sleep Mode
  • 5-µs (Typical) Rise Time and Fall Time for
    2-V Step
  • 9-Pin DSBGA Package

The LM3262 is a DC-DC converter optimized for powering RF power amplifiers (PAs) from a single lithium-ion cell; however, it may be used in many other applications such as USB-powered portable applications. The device 2.5-V to 5.5-V input voltage can be stepped down to an adjustable output voltage range from 0.4 V to 3.6 V. Output voltage is set using a VCON analog input which enables improved RF-stage PA efficiencies.

The LM3262 offers five modes of operation. In pulse width modulation (PWM) mode the device operates at a fixed frequency of 6 MHz (typical), which minimizes RF interference at medium-to-low loads. At light load, the device enters into ECO mode automatically and operates with reduced switching frequency. In ECO mode, the quiescent current is reduced and extends the battery life. Shutdown mode turns the device off and reduces battery consumption to 0.1 µA (typical). At low-battery condition, bypass mode reduces the voltage dropout to less than 50 mV (typical). The device also features a sleep mode.

The LM3262 is available in a 9-pin, lead-free DSBGA package. A high-switching frequency (6 MHz) allows use of only three tiny surface-mount components: one inductor and two ceramic capacitors.

For all available packages, see the orderable addendum at the end of the data sheet.

The LM3262 is a DC-DC converter optimized for powering RF power amplifiers (PAs) from a single lithium-ion cell; however, it may be used in many other applications such as USB-powered portable applications. The device 2.5-V to 5.5-V input voltage can be stepped down to an adjustable output voltage range from 0.4 V to 3.6 V. Output voltage is set using a VCON analog input which enables improved RF-stage PA efficiencies.

The LM3262 offers five modes of operation. In pulse width modulation (PWM) mode the device operates at a fixed frequency of 6 MHz (typical), which minimizes RF interference at medium-to-low loads. At light load, the device enters into ECO mode automatically and operates with reduced switching frequency. In ECO mode, the quiescent current is reduced and extends the battery life. Shutdown mode turns the device off and reduces battery consumption to 0.1 µA (typical). At low-battery condition, bypass mode reduces the voltage dropout to less than 50 mV (typical). The device also features a sleep mode.

The LM3262 is available in a 9-pin, lead-free DSBGA package. A high-switching frequency (6 MHz) allows use of only three tiny surface-mount components: one inductor and two ceramic capacitors.

For all available packages, see the orderable addendum at the end of the data sheet.
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類型 標題 日期
* Data sheet LM3262 6-MHz, 800-mA Miniature, Adjustable, Step-Down DC-DC Converter With Auto Bypass for RF Power Amplifiers datasheet (Rev. O) PDF | HTML 2015年 12月 30日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
User guide LM3262 DSBGA Evaluation Board (Rev. B) 2013年 4月 30日

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