MAX1722

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


Please check latest availability status for a specific part variant.

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).
MAX1722, MAX1723, MAX1724: Typical Operating Circuit MAX1722, MAX1723, MAX1724: Typical Operating Circuit Enlarge+

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

See parametric specs for Step-Up Switching Regulators (101)


Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
IOUT1
(A)
Output Adjust. MethodSwitch TypeSynchronous SwitchingICC
(mA)
Shutdown Mode Supply Current
(µA)
DC-DC OutputsPackage/PinsBudgetary
Price
minmaxminmaxmaxtyptypSee Notes
MAX1722 0.85.525.5-0.15ResistorInternalYes0.00150.11
TSOT/5
UDFN/6
$0.76 @1k
MAX1723 25.5-Resistor
TSOT/5
UDFN/6
MAX1724 2.75
2.7
3
3.3
5
Preset
TSOT/5
UDFN/6

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX1724EVKIT: Evaluation Kit for the MAX1722, MAX1723, MAX1724
Product Reliability Reports: MAX1722.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

 
Status:
Package:
Temperature:

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