MAX15014 datasheet(1/25 Pages) MAXIM

tên linh kiện	MAX15014

Giải thích chi tiết về linh kiện	1A, 4.5V to 40V Input Buck Converters with 50mA Auxiliary LDO Regulators

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General Description

The MAX15014–MAX15017 combine a step-down DC-DC

converter and a 50mA, low-quiescent-current low-dropout

(LDO) regulator. The LDO regulator is ideal for powering

always-on circuitry. The DC-DC converter input voltage

range is 4.5V to 40V for the MAX15015/MAX15016, and

7.5V to 40V for the MAX15014/MAX15017.

The DC-DC converter output is adjustable from 1.26V

to 32V and can deliver up to 1A of load current. These

devices utilize a feed-forward voltage-mode-control

scheme for good noise immunity in the high-voltage

switching environment and offer external compensation

allowing for maximum flexibility with a wide selection

of inductor values and capacitor types. The switching

frequency is internally fixed at 135kHz and 500kHz,

depending on the version chosen. Moreover, the switch-

ing frequency can be synchronized to an external clock

signal through the SYNC input. Light-load efficiency

is improved by automatically switching to a pulse-skip

mode. The soft-start time is adjustable with an external

capacitor. The DC-DC converter can be disabled inde-

pendent of the LDO, thus reducing the quiescent current

to 47μA (typ).

The LDO linear regulators operate from 5V to 40V and

deliver a guaranteed 50mA load current. The devices

feature a preset output voltage of 5V (MAX1501_A) or

3.3V (MAX1501_B). Alternatively, the output voltage

can be adjusted from 1.5V to 11V by using an external

resistive divider. The LDO section also features a RESET

output with adjustable timeout period.

Protection features include cycle-by-cycle current limit,

hiccup-mode output short-circuit protection, and thermal

shutdown. All devices are available in a space-saving,

high-power (2.86W), 36-pin TQFN package and are rated

for operation over the -40°C to +125°C automotive tem-

perature range.

Applications

● Mobile Radios

● Navigation Systems

Features

● Combined DC-DC Converters and Low-Quiescent-

Current LDO Regulators

● 1A DC-DC Converters Operate from 4.5V to 40V

(MAX15015/MAX15016) or 7.5V to 40V

(MAX15014/MAX15017)

● Switching Frequency of 135kHz

(MAX15014/MAX15016) or 500kHz

(MAX15015/MAX15017)

● 50mA LDO Regulator Operates from 5V to 40V

Independent of the DC-DC Converter

● 47μA Quiescent Current with DC-DC Converter

Off and LDO On

● 6μA System Shutdown Current

● Frequency Synchronization Input

● Shutdown/Enable Inputs

● Adjustable Soft-Start Time

● Active-Low Open-Drain RESET Output with

Programmable Timeout Delay

● Thermal Shutdown and Output Short-Circuit

Protection

● Space-Saving (6mm x 6mm) Thermally Enhanced

36-Pin TQFN Package

19-0734; Rev 1; 11/14

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad.

PART

TEMP RANGE

PIN-PACKAGE

MAX15014AATX+

-40°C to +125°C

36 TQFN-EP*

MAX15014BATX+

-40°C to +125°C

36 TQFN-EP*

MAX15015AATX+

-40°C to +125°C

36 TQFN-EP*

MAX15015BATX+

-40°C to +125°C

36 TQFN-EP*

MAX15016AATX+

-40°C to +125°C

36 TQFN-EP*

MAX15016BATX+

-40°C to +125°C

36 TQFN-EP*

MAX15017AATX+

-40°C to +125°C

36 TQFN-EP*

MAX15017BATX+

-40°C to +125°C

36 TQFN-EP*

MAX15014–MAX15017

1A, 4.5V to 40V Input Buck Converters with

50mA Auxiliary LDO Regulators

Ordering Information

EVALUATION KIT AVAILABLE

Số phần tương tự - MAX15014

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Maxim Integrated Produc...	MAX15014AATX+	815Kb / 26P	1A, 4.5V to 40V Input Buck Converters with 50mA Auxiliary LDO Regulators 19-0734; Rev 0; 1/07
	MAX15014BATX+	815Kb / 26P	1A, 4.5V to 40V Input Buck Converters with 50mA Auxiliary LDO Regulators 19-0734; Rev 0; 1/07
	MAX15014	815Kb / 26P	1A, 4.5V to 40V Input Buck Converters with 50mA Auxiliary LDO Regulators 19-0734; Rev 0; 1/07

More results

Mô tả tương tự - MAX15014

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Maxim Integrated Produc...	MAX8516	181Kb / 9P	1.425V to 3.6V Input, 1A, 0.2V Dropout LDO Regulators Rev 1; 4/04
	MAX8516	190Kb / 10P	1.425V to 3.6V Input, 1A, 0.2V Dropout LDO Regulators 19-3188; Rev 2; 9/09
	MAX15014	815Kb / 26P	1A, 4.5V to 40V Input Buck Converters with 50mA Auxiliary LDO Regulators 19-0734; Rev 0; 1/07
	MAX8516EUB-T	190Kb / 10P	1.425V to 3.6V Input, 1A, 0.2V Dropout LDO Regulators Rev 2; 9/09
	MAX17673	1Mb / 27P	Integrated 4.5V to 60V Synchronous 1.5A HV Buck and Dual 2.7V to 5.5V, 1A Buck Regulators Rev 2; 11/19
Diodes Incorporated	AP64102	1Mb / 21P	3.8V TO 40V INPUT, 1A LOW IQ SYNCHRONOUS BUCK WITH INTERNAL COMPENSATION Rev. 2 - 2 July 2021
	AP64060	1Mb / 18P	4.5V TO 40V INPUT, 600mA SYNCHRONOUS BUCK WITH ENHANCED EMI REDUCTION Rev. 2 - 2 August 2022
	AP64060Q	1Mb / 19P	4.5V TO 40V INPUT, 600mA SYNCHRONOUS BUCK WITH ENHANCED EMI REDUCTION Rev. 3 - 2 September 2022
	AP64100	1Mb / 26P	3.8V TO 40V INPUT, 1A LOW IQ SYNCHRONOUS BUCK WITH ADJUSTABLE FREQUENCY Rev. 1 - 2 March 2021
Renesas Technology Corp	RAA212421	1Mb / 34P	3V to 40V Input, 1.1A Synchronous Buck Regulator with Integrated 500mA LDO Jul 8, 2019

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