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Buck/boost稳压电荷泵,µMAX封装

业内尺寸最小的100mA buck/boost方案

产品详情

主要特征

Parametric specs for Charge Pumps
Topology Regulated
VIN (V) (min) 1.6
VIN (V) (max) 5.5
IOUT (A) (typ) 0.1
Unadj. VOUT (V) 3.3
Adj. VOUT (V) (min) 2.5
Adj. VOUT (V) (max) 5.5
ICC (mA) (max) 0.18
Switching Frequency (kHz) 1500
Oper. Temp. (°C) -40 to +85
Package/Pins UMAX/10
Budgetary
Price (See Notes)
3.11
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参量

Parametric specs for Charge Pumps
Topology Regulated
VIN (V) (min) 1.6
VIN (V) (max) 5.5
IOUT (A) (typ) 0.1
Unadj. VOUT (V) 3.3
Adj. VOUT (V) (min) 2.5
Adj. VOUT (V) (max) 5.5
ICC (mA) (max) 0.18
Switching Frequency (kHz) 1500
Oper. Temp. (°C) -40 to +85
Package/Pins UMAX/10
Budgetary
Price (See Notes)
3.11

主要特征

  • Regulated Output Voltage (Fixed 3.3V or Adjustable 2.5V to 5.5V)
  • 100mA Guaranteed Output Current
  • +1.6V to +5.5V Input Voltage Range
  • Low 50µA Quiescent Supply Current
  • 1µA Shutdown Mode
  • Load Disconnected from Input in Shutdown
  • High 1.5MHz Operating Frequency
  • Uses Small Ceramic Capacitors
  • Short-Circuit Protection and Thermal Shutdown
  • Small 10-Pin µMAX Package

应用/用途

  • 备用电池升压转换器
  • Li+电池供电应用
  • 微型设备
  • 转换器

描述

The MAX1759 is a buck/boost regulating charge pump that generates a regulated output voltage from a single lithium-ion (Li+) cell, or two or three NiMH or alkaline cells for small hand-held portable equipment. The MAX1759 operates over a wide +1.6V to +5.5V input voltage range and generates a fixed 3.3V or adjustable (2.5V to 5.5V) output (Dual Mode™). Maxim's unique charge-pump architecture allows the input voltage to be higher or lower than the regulated output voltage. Despite its high 1.5MHz operating frequency, the MAX1759 maintains low 50µA quiescent supply current.

Designed to be an extremely compact buck/boost converter, this device requires only three small ceramic capacitors to build a complete DC-DC converter capable of generating a guaranteed 100mA (min) output current from a +2.5V input. For added flexibility, the MAX1759 also includes an open-drain power-OK (POK) output that signals when the output voltage is in regulation.

The MAX1759 is available in a space-saving 10-pin µMAX package that is 1.09mm high and half the size of an 8-pin SO.

简化框图

MAX1759:典型工作电路 MAX1759: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