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Status

Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 724kB) Download   E-Mail

Description

The MAX1519/MAX1545 are dual-phase, Quick-PWM™, step-down controllers for desktop and mobile Pentium® 4 (P4) CPU core supplies. Dual-phase operation reduces input ripple current requirements and output voltage ripple while easing component selection and layout difficulties. The Quick-PWM control scheme provides instantaneous response to fast load-current steps. The MAX1519/MAX1545 include active voltage positioning with adjustable gain and offset, reducing power dissipation and bulk output capacitance requirements. The MAX1519/MAX1545 are intended for two different notebook CPU core applications: stepping down the battery directly or stepping down the 5V system supply to create the core voltage. The single-stage conversion method allows these devices to directly step down high-voltage batteries for the highest possible efficiency. Alternatively, two-stage conversion (stepping down the 5V system supply instead of the battery) at a higher switching frequency provides the minimum possible physical size. The MAX1519/MAX1545 comply with Intel's P4 specifications. The switching regulator features soft-start, power-up sequencing, and soft-shutdown. The MAX1519/MAX1545 also feature independent four-level logic inputs for setting the suspend voltage (S0-S1). The MAX1519/MAX1545 include output undervoltage protection (UVP), thermal protection, and voltage regulator power-OK (VROK) output. When any of these protection features detect a fault, the controller shuts down. Additionally, the MAX1519/MAX1545 include overvoltage protection. The MAX1519/MAX1545 are available in low-profile, 40-pin, 6mm x 6mm thin QFN packages. For other CPU platforms, refer to the pin-to-pin compatible MAX1544 and MAX1532/MAX1546/MAX1547 data sheets.

An evaluation kit is available:  MAX1544EVKIT, MAX1545EVKIT  

Key Features		Applications/Uses
Dual-Phase, Quick-PWM Controllers ±0.75% VOUT Accuracy Over Line, Load, and Temperature (1.3V) Active Voltage Positioning with Adjustable Gain and Offset 5-Bit On-Board DAC Mobile: 0.60V to 1.75V Output Range Desktop: 1.10V to 1.85V Output Range Selectable 100kHz/200kHz/300kHz/550kHz Switching Frequency 4V to 28V Battery Input Voltage Range Adjustable Slew-Rate Control Drive Large Synchronous Rectifier MOSFETs Output Overvoltage Protection (MAX1545 Only) Undervoltage and Thermal-Fault Protection Power Sequencing and Timing Selectable Suspend Voltage (0.675V to 1.45V) Soft-Shutdown Selectable Single- or Dual-Phase Pulse Skipping		Desktop and Mobile P4 Computers Low-Voltage, Digitally Programmable Power Supplies Multiphase CPU Core Supplies Servers/Desktop Computers Voltage-Positioned Step-Down Converters

Key Specifications:  Step-Down Switching Regulators

Part Number

VIN (V)

VIN (V)

VOUT (V)

VOUT (V)

Max. IOUT (A)

Max. IOUT (A)

Output Adjust. Method

DC-DC Outputs

Oper. Freq. (kHz)

Package/Pins

Smallest Available Pckg. (mm2)

Price

min

max

min

max

≥

≤

max w/pins

See Notes

MAX1519

2

28

0.6

1.85

40

40

Digital/VID

1

100 200 300 550

TQFN/40

37

-

MAX1545

TQFN/40

$6.63 @1k

See All Step-Down Switching Regulators (264)

Diagram

Pin Configuration

Evaluation Kits

MAX1544EVKIT, MAX1545EVKIT

Reliability Reports

Show FIT data for: MAX1519 MAX1545 Request Reliability Report for: MAX1519 MAX1545

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: 1-8 of 8

MAX1519	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1519ETL			Active	TQFN;40 pin;37 mm² Outline Drawing: 21-0141 (PDF) Land Pattern: 90-0055 (PDF) Use pkgcode/variation: T4066-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1519ETL-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1519ETL+			Active	TQFN;40 pin;37 mm² Outline Drawing: 21-0141 (PDF) Land Pattern: 90-0055 (PDF) Use pkgcode/variation: T4066+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1519ETL+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1545	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1545ETL			Active	TQFN;40 pin;37 mm² Outline Drawing: 21-0141 (PDF) Land Pattern: 90-0055 (PDF) Use pkgcode/variation: T4066-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1545ETL-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1545ETL+			Active	TQFN;40 pin;37 mm² Outline Drawing: 21-0141 (PDF) Land Pattern: 90-0055 (PDF) Use pkgcode/variation: T4066+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1545ETL+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet

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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

Document Ref.: 19-2734; Rev 1; 2003-09-27
This page last modified: 2009-10-13