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1.5µA IQ, Step-Up DC-DC Converters in TSOT and µDFN

Product Details

Key Features

Applications/Uses

Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 0.8
VIN (V) (max) 5.5
VOUT1 (V) (min) 2
VOUT1 (V) (max) 5.5
IOUT1 (A) (max) 0.15
Switch Type Internal
Output Adjust. Method Resistor
Synchronous Switching? Yes
ICC (mA) (typ) 0.0015
Shutdown Mode Supply Current (µA) (typ) 0.1
# DC-DC Outputs 1
Package/Pins TSOT/5
UDFN/6
Budgetary
Price (See Notes)
0.76
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Simplified Block Diagram

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Parameters

Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 0.8
VIN (V) (max) 5.5
VOUT1 (V) (min) 2
VOUT1 (V) (max) 5.5
IOUT1 (A) (max) 0.15
Switch Type Internal
Output Adjust. Method Resistor
Synchronous Switching? Yes
ICC (mA) (typ) 0.0015
Shutdown Mode Supply Current (µA) (typ) 0.1
# DC-DC Outputs 1
Package/Pins TSOT/5
UDFN/6
Budgetary
Price (See Notes)
0.76
Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 0.8
VIN (V) (max) 5.5
VOUT1 (V) (min) 2
VOUT1 (V) (max) 5.5
IOUT1 (A) (max) 0.15
Switch Type Internal
Output Adjust. Method Resistor
Synchronous Switching? Yes
ICC (mA) (typ) 0.0015
Shutdown Mode Supply Current (µA) (typ) 0.1
# DC-DC Outputs 1
Package/Pins TSOT/5
UDFN/6
Budgetary
Price (See Notes)
0.76

Key Features

  • Up to 90% Efficiency
  • No External Diode or FETs Needed
  • 1.5µA Quiescent Supply Current
  • 0.1µA Logic-Controlled Shutdown
  • ±1% Output Voltage Accuracy
  • Fixed Output Voltage (MAX1724) or Adjustable Output Voltage (MAX1722/MAX1723)
  • Up to 150mA Output Current
  • 0.8V to 5.5V Input Voltage Range
  • 0.91V Guaranteed Startup (MAX1722/MAX1724)
  • Internal EMI Suppression (MAX1722/MAX1724)
  • TSOT Package (0.9mm typ Height)
  • µDFN Package (2mm x 2mm x 0.75mm)

Applications/Uses

  • Digital Still Cameras
  • Low-Power Handheld Instruments
  • MP3 Players
  • Pagers
  • PDAs and Other Handheld Devices
  • Personal Medical Devices
  • Remote Controls
  • Remote Wireless Transmitters
  • Single-Cell Battery-Powered Devices

Description

The MAX1722/MAX1723/MAX1724 compact, high-efficiency, step-up DC-DC converters are available in tiny, 5-pin TSOT packages. They feature an extremely low 1.5µA quiescent supply current to ensure the highest possible light-load efficiency. Optimized for operation from one to two alkaline or nickel-metal-hydride (NiMH) cells, or a single Li+ cell, these devices are ideal for applications where extremely low quiescent current and ultra-small size are critical.

Built-in synchronous rectification significantly improves efficiency and reduces size and cost by eliminating the need for an external Schottky diode. All three devices feature a 0.5Ω N-channel power switch. The MAX1722/MAX1724 also feature proprietary noise-reduction circuitry, which suppresses electromagnetic interference (EMI) caused by the inductor in many step-up applications. The family offers different combinations of fixed or adjustable outputs, shutdown, and EMI reduction (see Selector Guide).

Simplified Block Diagram

MAX1722, MAX1723, MAX1724: Typical Operating Circuit MAX1722, MAX1723, MAX1724: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .