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
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.
Key Features
Applications/Uses
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
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 prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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