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Status

Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 512kB) Download   E-Mail

Description

The MAX782 is a system-engineered power-supply controller for notebook computers or similar battery-powered equipment. It provides two high-performance step-down (buck) pulse-width modulators (PWMs) for +3.3V and +5V, and dual PCMCIA VPP outputs powered by an integral flyback winding controller. Other functions include dual, low-dropout, micropower linear regulators for CMOS/RTC backup, and three precision low-battery-detection comparators. High efficiency (95% at 2A; greater than 80% at loads from 5mA to 3A) is achieved through synchronous rectification and PWM operation at heavy loads, and Idle-Mode™ operation at light loads. It uses physically small components, thanks to high operating frequencies (300kHz/200kHz) and a new current-mode PWM architecture that allows for output filter capacitors as small as 30µF per ampere of load. Line- and load-transient response are terrific, with a high 60kHz unity-gain crossover frequency allowing output transients to be corrected within four or five clock cycles. Low system cost is achieved through a high level of integration and the use of low-cost, external N-channel MOSFETs. The integral flyback winding controller provides a low-cost, +15V high-side output that regulates even in the absence of a load on the main output. Other features include low-noise, fixed-frequency PWM operation at moderate to heavy loads and a synchronizable oscillator for noise-sensitive applications such as electromagnetic pen-based systems and communicating computers. The MAX782 is a monolithic BiCMOS IC available in fine-pitch, SSOP surface-mount packages.

Key Features		Applications/Uses
Dual PWM Buck Controllers (+3.3V and +5V) Dual PCMCIA VPP Outputs (0V/5V/12V) Three Precision Comparators or Level Translators 95% Efficiency 420µA Quiescent Current; 70µA in Standby (linear regulators alive) 5.5V to 30V Input Range Small SSOP Package Fixed Output Voltages Available: 3.3 (standard) 3.45 (High-Speed Pentium™) 3.6 (PowerPC™)		Communication Systems Notebook Computers Pen-Entry Systems Portable Data Terminals

Diagram

Typical Application Circuit

Reliability Reports

Show FIT data for: MAX782 Request Reliability Report for: MAX782 MAX782R MAX782S

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-12 of 12

MAX782	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX782C/D			Active	DICE SALES;NA pin;0 mm² Land Pattern: Not Applicable Use pkgcode/variation: DICE*		See data sheet
MAX782EVKIT-SO			Active	Land Pattern: Not Available		See data sheet
MAX782CBX+			Active	SSOP;36 pin;163.4 mm² Outline Drawing: 21-0040 (PDF) Land Pattern: 90-0098 (PDF) Use pkgcode/variation: A36+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX782CBX+T			Active	SSOP;36 pin;163.4 mm² Outline Drawing: 21-0040 (PDF) Land Pattern: 90-0098 (PDF) Use pkgcode/variation: A36+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX782CBX			Active	SSOP;36 pin;163.4 mm² Outline Drawing: 21-0040 (PDF) Land Pattern: 90-0098 (PDF) Use pkgcode/variation: A36-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX782CBX-T			Active	SSOP;36 pin;163.4 mm² Outline Drawing: 21-0040 (PDF) Land Pattern: 90-0098 (PDF) Use pkgcode/variation: A36-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX782EBX			Active	SSOP;36 pin;163.4 mm² Outline Drawing: 21-0040 (PDF) Land Pattern: 90-0098 (PDF) Use pkgcode/variation: A36-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX782EBX-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX782S	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX782SCBX			Active	SSOP;36 pin;163.4 mm² Outline Drawing: 21-0040 (PDF) Land Pattern: 90-0098 (PDF) Use pkgcode/variation: A36-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX782SCBX-T			Active	Land Pattern: Not Available	0°C to +70°C	See data sheet
MAX782SEBX			Active	SSOP;36 pin;163.4 mm² Outline Drawing: 21-0040 (PDF) Land Pattern: 90-0098 (PDF) Use pkgcode/variation: A36-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX782SEBX-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet

Notes and Comments

Fixed output voltages available 3.3V , 3.45V , 3.6V

Related Products

MAX783, MAX783EVKIT Triple-Output Power Supply Controller for Notebook Computers MAX786, MAX786R, MAX786S Dual-Output Power Supply Controller for Notebook Computers

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