QuickView

Technical Documents

Ordering Info

More Information

All

Data Sheet

FULL DATA SHEET (PDF, 216kB) Download   E-Mail

Description

The MAX770-MAX773 step-up switching controllers provide 90% efficiency over a 10mA to 1A load. A unique current-limited pulse-frequency-modulation (PFM) control scheme gives these devices the benefits of pulse-width-modulation (PWM) converters (high efficiency at heavy loads), while using less than 110µA of supply current (vs. 2mA to 10mA for PWM converters). These ICs use tiny external components. Their high switching frequencies (up to 300kHz) allow surface-mount magnetics of 5mm height and 9mm diameter. The MAX770/MAX771/MAX772 accept input voltages from 2V to 16.5V. Output voltages are preset at 5V, (MAX770), 12V (MAX771), and 15V (MAX772); they can also be adjusted using two resistors. The MAX773 accepts inputs from 3V to 16.5V. For a wider input range, it features an internal shunt regulator that allows unlimited higher input voltages. The MAX773's output can be set to 5V, 12V, or 15V, or it can be adjusted with two resistors. The MAX770-MAX773 drive external N-channel MOSFET switches, allowing them to power loads up to 15W. If less power is required, use the MAX756/MAX757 or MAX761/MAX762 step-up switching regulators with on-board MOSFETs.

Key Features		Applications/Uses
90% Efficiency for 10mA to 1A Load Currents Up to 15W Output Power 110µA Max Supply Current 5µA Max Shutdown Current 2V to 16.5V Input Range (MAX770/MAX771/MAX772) Internal Shunt Regulator for High Input Voltages (MAX773) Preset or Adjustable Output Voltages MAX770: 5V or Adjustable MAX771: 12V or Adjustable MAX772: 15V or Adjustable MAX773: 5V, 12V, 15V, or Adjustable Current-Limited PFM Control Scheme 300kHz Switching Frequency		Battery-Powered Applications Flash Memory Programming High-Efficiency DC-DC Converters Palmtops, Handy Terminals Portable Communicators Positive LCD-Bias Generators

Diagram

Typical Operating Circuit

Application Notes

Application Note 113: Boost DC-DC Voltage Regulator Converts To Current Source for Battery Charging - MAX771 Application Note 179: Step-Up/Step-Down Current Source Charges Batteries - MAX770 Application Note 523: Quick-Charge IC Routes Step-Up Switcher Output To Battery - MAX770 Application Note 544: Boost/Linear Regulator Derives 5V From Four Cells - MAX770 Application Note 621: Simple Circuit Charges Lead-Acid Batteries - MAX773 Application Note 998: 5V Step-Down Converter Has Transformer-Isolated Feedback - MAX770 Application Note 1054: Simple Change Improves PFM Boost-Controller Efficiency - MAX770 Application Note 1170: Circuit Connection Adds Current-Mode Operation To PFM Boost Converters - MAX770, MAX771, MAX772, MAX773

Evaluation Kits

MAX770EVKIT

Reliability Reports

Show FIT data for: MAX770 MAX771 MAX772 MAX773 Request Reliability Report for: MAX770 MAX771 MAX772 MAX773

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: 1-53 of 53
MAX770	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX770MJA			Ceramic DIP;8 pin;81 mm² Dwg: 21-0045 Use pkgcode/variation: J8-2*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX770C/D			DICE SALES;0 pin; Use pkgcode/variation: DICE*		See data sheet
MAX770CPA+			PDIP;8 pin;82 mm² Dwg: 21-0043 Use pkgcode/variation: P8+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX770EPA+			PDIP;8 pin;82 mm² Dwg: 21-0043 Use pkgcode/variation: P8+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX770CPA			PDIP;8 pin;82 mm² Dwg: 21-0043 Use pkgcode/variation: P8-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX770EPA			PDIP;8 pin;82 mm² Dwg: 21-0043 Use pkgcode/variation: P8-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX770CSA+			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8+5*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX770CSA+T			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8+5*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX770CSA			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8-5*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX770CSA-T			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8-5*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX770ESA+			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX770ESA+T			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX770ESA			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX770ESA-T			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX771	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX771MJA			Ceramic DIP;8 pin;81 mm² Dwg: 21-0045 Use pkgcode/variation: J8-2*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX771C/D			DICE SALES;0 pin; Use pkgcode/variation: DICE*		See data sheet
MAX771CPA+			PDIP;8 pin;82 mm² Dwg: 21-0043 Use pkgcode/variation: P8+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX771EPA+			PDIP;8 pin;82 mm² Dwg: 21-0043 Use pkgcode/variation: P8+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX771CPA			PDIP;8 pin;82 mm² Dwg: 21-0043 Use pkgcode/variation: P8-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX771EPA			PDIP;8 pin;82 mm² Dwg: 21-0043 Use pkgcode/variation: P8-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX771CSA+T			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8+5*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX771CSA			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8-5*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX771CSA-T			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8-5*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX771CSA+			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8+5*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX771ESA			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX771ESA+T			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX771ESA+			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX771ESA-T			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX772	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX772MJA			Ceramic DIP;8 pin;81 mm² Dwg: 21-0045 Use pkgcode/variation: J8-2*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX772C/D			DICE SALES;0 pin; Use pkgcode/variation: DICE*		See data sheet
MAX772CPA			PDIP;8 pin;82 mm² Dwg: 21-0043 Use pkgcode/variation: P8-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX772EPA			PDIP;8 pin;82 mm² Dwg: 21-0043 Use pkgcode/variation: P8-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX772CSA+			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8+5*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX772CSA+T			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8+5*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX772CSA			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8-5*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX772CSA-T			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8-5*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX772ESA			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX772ESA+			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX772ESA+T			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX772ESA-T			SOIC;8 pin;31 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S8-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX773	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX773MJD			Ceramic DIP;14 pin;162 mm² Dwg: 21-0045A (PDF) Use pkgcode/variation: J14-3*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX773C/D			DICE SALES;0 pin; Use pkgcode/variation: DICE*		See data sheet
MAX773CPD+			PDIP;14 pin;160 mm² Dwg: 21-0043 Use pkgcode/variation: P14+3*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX773CPD			PDIP;14 pin;160 mm² Dwg: 21-0043 Use pkgcode/variation: P14-3*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX773EPD			PDIP;14 pin;160 mm² Dwg: 21-0043 Use pkgcode/variation: P14-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX773CSD+			SOIC;14 pin;54 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S14+4*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX773CSD+T			SOIC;14 pin;54 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S14+4*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX773CSD-T			SOIC;14 pin;54 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S14-4*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX773CSD			SOIC;14 pin;54 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S14-4*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX773ESD+T			SOIC;14 pin;54 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S14+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX773ESD			SOIC;14 pin;54 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S14-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX773ESD-T			SOIC;14 pin;54 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S14-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX773ESD+			SOIC;14 pin;54 mm² Dwg: 21-0041B (PDF) Use pkgcode/variation: S14+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

Related Products

MAX608 5V or Adjustable, Low-Voltage, Step-Up DC-DC Controller

Didn't Find What You Need?

Next Day Product Selection Assistance from Applications Engineers Parametric Search Applications Help

QuickView

Technical Documents

Ordering Info

More Information

Description   Key Features   Applications/Uses   Key Specifications   Diagram

Data Sheet   Application Notes   Design Guides   Engineering Journals   Reliability Reports   Software/Models   Evaluation Kits

Price and Availability   Samples   Buy Online   Package Information   Lead-Free Information

Related Products   Notes and Comments   Evaluation Kits