MAX8858

PRODUCTION

Smallest, All-Internal MOSFET, 6-Channel DSC PMIC in a 5mm x 5mm TQFN

Low-Cost, High-Performance, 6-Channel DSC PMIC

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: price unavailable

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Overview

95% Efficient Synchronous-Rectified DC-DC Converters
Up to 90% Efficient Boost-Buck Operation
Up to 85% Efficient, High-Voltage DC-DC Converters
Transformerless Inverting Converter with Active Discharge for CCD
Preset Power-Up Sequencing for MAIN, SDZ, and SD Converters
Inverter Operates Directly from Two AA Batteries
Internal Compensation on All Channels
True Shutdown™ on All Step-Up Converters
Overload Protection
Startup into Short Protection
Soft-Start for Controlled Inrush Current
100% Duty Cycle on Step-Down Converters
2MHz ±5% Switching Frequency
0.1µA Shutdown Supply Current
All Internal Power MOSFETs

The MAX8858 PMIC provides a complete power-supply solution for digital still cameras (DSCs) and digital video cameras (DVCs). The MAX8858 improves performance, component count, and board space utilization compared to currently available solutions for two AA cell and dual-battery designs. On-chip power MOSFETs provide up to 95% efficiency for critical power supplies. The CCD inverter can operate directly from two AA/NiMH batteries without the use of any additional external components.

Step-up synchronous-rectified DC-DC converter (SU). The MAX8858 is bootstrapped from V_VSU.
MAIN synchronous-rectified step-up DC-DC converter (M) with active discharge for DSP I/O supply voltage.
SDZ synchronous-rectified step-down DC-DC converter (SDZ) with active discharge for DSP DDR supply voltage.
Low-voltage (down to 1V) synchronous-rectified step-down DC-DC converter (SD) with active discharge for DSP core supply voltage.
High-voltage step-up DC-DC converter (CCDBST) for CCD imagers or positive LCD bias supplies.
Transformerless inverting DC-DC converter (CCDINV) with active discharge for CCD imagers or negative LCD bias supplies. This converter can connect directly to two AA batteries.

Individual ON_ inputs provide independent on/off control for the SU, CCDBST, and CCDINV converters, while dual-function inputs allow independent on/off control or power-up sequencing of the MAIN, SDZ, and SD converters.

The MAX8858 is available in a 5mm x 5mm x 0.8mm, 32-pin thin QFN package and operates over the -40°C to +85°C extended temperature range.

Applications

DSCs and DVCs
PDAs and Portable Media Players

Part Models: 2
1ku List Price: price unavailable

Documentation

Data Sheet 1

MAX8858: Smallest, All-Internal MOSFET, 6-Channel DSC PMIC in a 5mm x 5mm TQFN Data Sheet (Rev.0) 10/24/2008

Reliability Data 1

MAX8858 Reliability Data 01/12/2023

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX8858ETJ+	32-LFCSP-5X5X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX8858ETJ+T	32-LFCSP-5X5X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Mar 9, 2023 - 2276A WAFER FAB
		pcn_2276a
MAX8858ETJ+	PRODUCTION
MAX8858ETJ+T	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Evaluation Kits

Evaluation Kit for the MAX8858

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Features and Benefits

95% Efficient Synchronous-Rectified DC-DC Converters
90% Efficient Boost-Buck Operation
Up to 85% Efficient, High-Voltage DC-DC Converters
Inverter Operates Directly from Two AA Batteries
Active Discharge for CCD Inverter Supply
Preset Power-Up Sequencing for MAIN, SDZ, and SD Converters
Internal Compensation on All Channels
True Shutdown™ on All Step-Up Converters
Overload Protection
Startup into Short Protection
Soft-Start for Controlled Startup Current
100% Duty Cycle on Step-Down Converters
2MHz ±5% Switching Frequency
0.1µA Shutdown Supply Current
All Internal Power MOSFETs
Lead(Pb)-Free and RoHS Compliant
Fully Assembled and Tested

Product Details

The MAX8858 evaluation kit (EV kit) is a fully assembled and tested PCB for evaluating the MAX8858 power-management IC (PMIC). The MAX8858 PMIC provides a compact and complete power-supply solution for digital still cameras (DSCs) and digital video cameras (DVCs). The MAX8858 improves performance, component count, and board space utilization compared to currently available solutions for 2AA cell and dual-battery designs. On-chip power MOSFETs provide up to 95% efficiency for critical power supplies. The CCD inverter operates directly from two AA/NiMH batteries without the use of any additional external components.