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MAX1566

Maxim
Part Number MAX1566
Manufacturer Maxim
Description Six-Channel / High-Efficiency / Digital Camera Power Supplies
Published May 6, 2005
Detailed Description 19-2882; Rev 1; 4/04 KIT ATION EVALU E L B AVAILA Six-Channel, High-Efficiency, Digital Camera Power Supplies General ...
Datasheet PDF File MAX1566 PDF File

MAX1566
MAX1566

Overview
19-2882; Rev 1; 4/04 KIT ATION EVALU E L B AVAILA Six-Channel, High-Efficiency, Digital Camera Power Supplies General Description 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 MAX1566/MAX1567 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 DCto-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 ava...


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