MAX1567

Six-Channel, High-Efficiency, Digital Camera Power Supplies

Six-Channel, High-Efficiency, Digital Camera Power Supplies Improve Performance, Component Count, and Size Compared to Conventional Multichannel Controllers in 2-Cell AA, 1-Cell Li+, and Dual-Battery Designs


Please check latest availability status for a specific part variant.

Description

The MAX1566/MAX1567 provide a complete powersupply solution for digital cameras. They improve performance, component count, and size compared to conventional multichannel controllers in 2-cell AA, 1-cell lithium-ion (Li+), and dual-battery designs. On-chip MOSFETs provide up to 95% efficiency for critical power supplies, while additional channels operate with external FETs for optimum design flexibility. This optimizes overall efficiency and cost, while also reducing board space.

The MAX1566/MAX1567 include six high-efficiency DC-to-DC conversion channels:

  • Step-up DC-to-DC converter with on-chip power FETs
  • Main DC-to-DC converter with on-chip FETs, configurable to step either up or down
  • Step-down core DC-to-DC converter with on-chip FETs
  • DC-to-DC controller for white LEDs or other output
  • Extra DC-to-DC controller (typically for LCD); two extra controllers on the MAX1566
  • Transformerless inverting DC-to-DC controller (typically for negative CCD bias) on the MAX1567
All DC-to-DC channels operate at one fixed frequency settable from 100kHz to 1MHz to optimize size, cost, and efficiency. Other features include soft-start, power-OK outputs, and overload protection. The MAX1566/MAX1567 are available in space-saving 40-pin thin QFN packages. An evaluation kit is available to expedite designs.
MAX1566, MAX1567: Typical Operating Circuit MAX1566, MAX1567: Typical Operating Circuit Enlarge+

Key Features

  • 95% Efficient Step-Up DC-to-DC Converter
  • 0.7V Minimum Input Voltage
  • Main DC-to-DC Configurable as Either Step-Up or Step-Down
  • Combine Step-Up and Step-Down for 90% Efficient Boost-Buck
  • 95% Efficient Step-Down for DSP Core
  • Regulate LED Current for Four, Six, or More LEDs
  • Open LED Overvoltage Protection
  • Transformerless Inverting Controller (MAX1567)
  • Three Extra PWM Controllers (Two on the MAX1567)
  • Up to 1MHz Operating Frequency
  • 1µA Shutdown Mode
  • Soft-Start and Overload Protection
  • Compact 40-Pin 6mm x 6mm Thin QFN Package

Applications/Uses

  • Digital Cameras
  • PDAs
Part NumberPrimary TopologyMonitor/Control FeaturesDC-DC/Power FeaturesLCD/LED/Flash/CCD FeaturesVIN
(V)
VIN
(V)
VOUT
(V)
VOUT
(V)
Max. IOUT
(A)
Max. IOUT
(A)
Oper. Freq.
(kHz)
Inverting OutputsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX1566 
Step-Down
Step-Up
Step-Up/Down
Low Batt./POK Output
Shutdown
Adj. Frequency
Current Limit
Fixed Freq./PWM
Internal Switch
Soft Start
Sync. Rectifier
CCD Bias
TFT Bias
White LED
0.75.51.255.50.750.751000-
TQFN/40
$2.90 @1k
MAX1567 
Adj. Frequency
Current Limit
Internal Switch
Soft Start
Sync. Rectifier
CCD Bias
TFT Bias
1
TQFN/40
See All Multifunction PMICs (85)
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.


MAX1567SUMEVKIT: Step-Up Main Evaluation Kit for the MAX1566, MAX1567
MAX1567EVKIT: MAX1567 Evaluation Kit

Technical Documents

App Note 3226 High-Level Integration Needed for Compact Digital-Camera Power

Quality and Environmental Data

Product Reliability Reports: MAX1567.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX1567ETL+
  • MAX1567ETL+T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    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 >

     
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    Related Resources


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