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60mA、SOT23封装、反相电荷泵,带有关断

具有EMI兼容性的超小型电荷泵

产品详情

主要特征

Parametric specs for Charge Pumps
Topology Inverter
Unregulated
VIN (V) (min) 1.25
VIN (V) (max) 5.5
IOUT (A) (typ) 0.06
Unadj. VOUT (V) -VIN
ICC (mA) (max) 0.3
Switching Frequency (kHz) 250
Oper. Temp. (°C) -40 to +85
Package/Pins SOT23/6
Budgetary
Price (See Notes)
1.1
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参量

Parametric specs for Charge Pumps
Topology Inverter
Unregulated
VIN (V) (min) 1.25
VIN (V) (max) 5.5
IOUT (A) (typ) 0.06
Unadj. VOUT (V) -VIN
ICC (mA) (max) 0.3
Switching Frequency (kHz) 250
Oper. Temp. (°C) -40 to +85
Package/Pins SOT23/6
Budgetary
Price (See Notes)
1.1

主要特征

  • 60mA Output Current
  • Low 12Ω Output Resistance
  • 150µA Supply Current (MAX1697R)
  • Requires Only Two 1µF Capacitors (MAX1697U)
  • Start-Up Current Limited
  • +1.25V to +5.5V Input Voltage Range
  • Slew-Rate Limited to Reduce EMI

应用/用途

  • 电池供电设备
  • GaAsFET偏置电源
  • 手持终端、PDA
  • 从+5V或+3.3V逻辑电源产生负电源
  • 小型LCD板

描述

The MAX1697 ultra-small, monolithic, CMOS charge-pump voltage inverter accepts an input voltage ranging from +1.25V to +5.5V. This device features an ultra-low 12Ω output resistance, permitting loads of up to 60mA with maximum efficiency. The MAX1697 is available with operating frequencies of 12kHz, 35kHz, 125kHz, or 250kHz, allowing optimization of supply current or external component size. Its small external components and micropower shutdown mode make this device ideal for both battery-powered and board-level voltage conversion applications.

Oscillator control circuitry and four power MOSFET switches are included on-chip. Applications include generating a negative supply from a +5V or +3.3V logic supply to power analog circuitry. All versions come in a 6-pin SOT23 package and deliver 60mA.

For applications with lower current requirements, the MAX1719/MAX1720/MAX1721 are pin-compatible SOT23 charge pumps that supply up to 25mA.

简化框图

MAX1697:典型工作电路 MAX1697:典型工作电路 Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心