MAX1541ETL datasheet(1/49 Pages) MAXIM

Part #	MAX1541ETL

Description	Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator

Download	49 Pages

Scroll/Zoom	100%

Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

Logo

1 / 49 page

General Description

The MAX1540A/MAX1541 dual pulse-width modulation

(PWM) controllers provide the high efficiency, excellent

transient response, and high DC-output accuracy nec-

essary for stepping down high-voltage batteries to gen-

erate low-voltage chipset and RAM power supplies in

notebook computers.

The Maxim proprietary Quick-PWM™ controllers are

free running, constant on-time with input feed forward.

This configuration provides ultra-fast transient

response, wide input-output (I/O) differential range, low

supply current, and tight load-regulation characteris-

tics. The controllers can accurately sense the inductor

current across an external current-sense resistor in

series with the output to ensure reliable overload and

inductor saturation protection. Alternatively, the con-

trollers can use the synchronous rectifier itself or loss-

less inductor current-sensing methods to provide

overload protection with lower power dissipation.

For a single step-down PWM controller with inductor-

saturation protection, external-reference input voltage,

and dynamically selectable output voltages, refer to the

MAX1992/MAX1993 data sheet.

Applications

Notebook Computers

Core/I/O Supplies as Low as 0.7V

0.7V to 5.5V Supply Rails

CPU/Chipset/GPU with Dynamic Voltage Core

Supplies (MAX1541)

DDR Memory Termination (MAX1541)

Active Termination Buses (MAX1541)

Features

♦ Inductor-Saturation Protection

♦ Accurate Differential Current-Sense Inputs

♦ Dual Ultra-High-Efficiency Quick-PWMs with

100ns Load-Step Response

♦ MAX1540A

1.8V/1.2V Fixed or 0.7V to 5.5V Adjustable

Output (OUT1)

2.5V/1.5V Fixed or 0.7V to 5.5V Adjustable

Output (OUT2)

Fixed 5V, 100mA Linear Regulator

♦ MAX1541

External Reference Input (REFIN1)

Dynamically Selectable Output Voltage—0.7V

to 5.5V (OUT1)

2.5V/1.8V Fixed or 0.7V to 5.5V Adjustable

Output (OUT2)

Optional Power-Good and Fault Blanking

During Transitions

Fixed 5V or Adjustable 100mA Linear Regulator

♦ 1% VOUT Accuracy over Line and Load

♦ 2V to 28V Battery Input Range

♦ 170kHz to 620kHz Selectable Switching

Frequency

♦ Overvoltage/Undervoltage-Protection Option

♦ 1.7ms Digital Soft-Start

♦ Drives Large Synchronous-Rectifier FETs

♦ 2V ±0.7% Reference Output

♦ Separate Power-Good Window Comparators

Dual Step-Down Controllers with Saturation

Protection, Dynamic Output, and Linear Regulator

________________________________________________________________ Maxim Integrated Products

1

THIN QFN

TOP VIEW

MAX1540A

32

31

30

29

28

27

26

ON1

ON2

CSP1

CSN1

FB1

OUT1

PGOOD1

25

DH1

9

10

11

12

13

14

15

CSP2

CSN2

FB2

OUT2

PGOOD2

DH2

LX2

16

BST2

A "+" SIGN WILL REPLACE THE FIRST PIN INDICATOR ON LEAD-FREE PACKAGES.

Pin Configurations

19-2861; Rev 3; 2/07

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

EVALUATION

KIT

AVAILABLE

Quick-PWM is a trademark of Maxim Integrated Products, Inc.

Ordering Information

PART

TEMP RANGE

PIN-

PACKAGE

PKG

CODE

MAX1540AETJ

-40

°C to +85°C

32 Thin QFN

5mm x 5mm

T3255-4

MAX1540AETJ+

-40

°C to +85°C

32 Thin QFN

5mm x 5mm

T3255-4

MAX1541ETL

-40

°C to +85°C

40 Thin QFN

6mm x 6mm

T4066-5

MAX1541ETL+

-40

°C to +85°C

40 Thin QFN

6mm x 6mm

T4066-5

Pin Configurations continued at end of data sheet.

+Denotes a lead-free package.

Similar Part No. - MAX1541ETL

Manufacturer	Part #	Datasheet	Description
Maxim Integrated Produc...	MAX1541ETL	834Kb / 49P	Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator Rev 2; 1/05
Maxim Integrated Produc...	MAX1541ETL	780Kb / 49P	Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator Rev 3; 2/07

More results

Similar Description - MAX1541ETL

Manufacturer	Part #	Datasheet	Description
Maxim Integrated Produc...	MAX1540	834Kb / 49P	Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator Rev 2; 1/05
	MAX1540AETJ	780Kb / 49P	Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator Rev 3; 2/07
	MAX1992	543Kb / 36P	Quick-PWM Step-Down Controllers with Inductor Saturation Protection and Dynamic Output Voltages Rev 0; 10/02
Anpec Electronics Corop...	APW7060	179Kb / 16P	Dual Controllers - Step Down Synchronous PWM and Linear Controller
Maxim Integrated Produc...	MAX1816	983Kb / 49P	Dual Step-Down Controllers Plus Linear- Regulator Controller for Notebook Computers 19-2569; Rev 0; 10/02
Skyworks Solutions Inc.	AAT2505	3Mb / 23P	Dual Channel, Step-Down Converter/Linear Regulator
Advanced Analogic Techn...	AAT2505	843Kb / 26P	Dual Channel, Step-Down Converter/Linear Regulator
Texas Instruments	LP3907	3Mb / 58P	[Old version datasheet] Dual High-Current Step-Down DC-DC and Dual Linear Regulator
	LP3907-Q1	3Mb / 53P	[Old version datasheet] Dual High-Current Step-Down DC-DC And Dual Linear Regulator
	LP3906SQ-JXXI	3Mb / 47P	[Old version datasheet] Dual High-Current Step-Down DC/DC and Dual Linear Regulator with I2C ompatible

More results

MAX1541ETL Datasheet(PDF) 1 Page - Maxim Integrated Products

MAX1541ETL Datasheet(HTML) 1 Page - Maxim Integrated Products

Similar Part No. - MAX1541ETL

Similar Description - MAX1541ETL

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49

Datasheet Download

Link URL