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Status

Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 464kB) Download   E-Mail

Description

The MAX1960/MAX1961/MAX1962 high-current, high-efficiency voltage-mode step-down DC-DC controllers operate from a 2.35V to 5.5V input and generate output voltages down to 0.8V at up to 20A. An on-chip charge pump generates a regulated 5V for MOSFET drive. Additionally, adaptive dead-time drivers allow a wide variety of MOSFETs to be used without risking shoot-through. Fixed-frequency PWM operation and external synchronization make these controllers suitable for telecom and datacom applications. The operating frequency is programmable to either 500kHz or 1MHz, or from 450kHz to 1.2MHz with an external clock. A clock output is provided to synchronize another converter for 180° out-of-phase operation. A high closed-loop bandwidth provides excellent transient response for applications with dynamic loads. Lossless current sensing in the MAX1960 and MAX1961 is achieved by monitoring the drain-to-source voltage of the low-side external FET. The current limit is scalable to accommodate a wide variety of MOSFETs and load currents. The MAX1962 has 10% accurate sense-resistor-based current limiting. The MAX1960 and MAX1962 have an adjustable output voltage from 0.8V to 4.95V. The MAX1961 and MAX1962 have four preset output voltages (1.5V, 1.8V, 2.5V, and 3.3V) and feature 0.5% voltage accuracy over temperature, line, and load variations. The MAX1960 and MAX1961 also feature voltage-margining control inputs that shift the output voltage up or down by 4% for system testing.

An evaluation kit is available:  MAX1960EVKIT  

Key Features		Applications/Uses
0.5% Accurate Output Operates from 2.35V to 5.5V Supply Generates Low Output Voltage Down to 0.8V On-Chip Charge Pump Provides 5V Gate Drive Ceramic or Electrolytic Capacitors 94% Efficiency External Synchronization from 450kHz to 1.2MHz 500kHz/1MHz Fixed-Frequency PWM Operation Fast Transient Response Two Converters Can Operate 180° Out-of-Phase ±4% Voltage Margining for System Test 10% Accurate Current Sensing (MAX1962) Adaptive Dead Time Prevents Shoot-Through		ASIC, FPGA, DSP, and CPU Core and I/O Voltages Cellular Base Stations Server and Storage Systems Telecom and Network Equipment

Diagram

Functional Diagram

Application Notes

Application Note 3443: Line and Load Transient Testing for Power Supplies - MAX1960 Application Note 3453: Testing a Power Supply for Line and Load Transients - MAX1960

Evaluation Kits

MAX1960EVKIT

Reliability Reports

Reliability Report: MAX1960.pdf MAX1961.pdf Show FIT data for: MAX1960 MAX1961 MAX1962 Request Reliability Report for: MAX1962

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

MAX1960	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1960EEP			Active	QSOP;20 pin;54.2 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0168 (PDF) Use pkgcode/variation: E20-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1960EEP-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1960EEP+			Active	QSOP;20 pin;54.2 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0168 (PDF) Use pkgcode/variation: E20+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1960EEP+T			Active	QSOP;20 pin;54.2 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0168 (PDF) Use pkgcode/variation: E20+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1961	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1961EEP+			Active	QSOP;20 pin;54.2 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0168 (PDF) Use pkgcode/variation: E20+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1961EEP+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1961EEP			Active	QSOP;20 pin;54.2 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0168 (PDF) Use pkgcode/variation: E20-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1961EEP-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1962	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1962EEP+			Active	QSOP;20 pin;54.2 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0168 (PDF) Use pkgcode/variation: E20+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1962EEP+T			Active	QSOP;20 pin;54.2 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0168 (PDF) Use pkgcode/variation: E20+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1962EEP			Active	QSOP;20 pin;54.2 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0168 (PDF) Use pkgcode/variation: E20-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1962EEP-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet

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