MAX5096 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX5096

40V, 600mA Buck Converters with Low Quiescent-Current Linear Regulator Mode

Maxim Integrated 

MAX5096/MAX5097

EVALUATION KIT AVAILABLE

40V, 600mA Buck Converters with Low-

Quiescent-Current Linear Regulator Mode

General Description

The MAX5096/MAX5097 easy-to-use, Dual Mode™,

DC-DC converters operate as LDO (low dropout) or

switch-mode buck converters. At a high output load,

the converters operate as high-efficiency pulse-width

modulated (PWM) switch-mode converters and reduce

the power dissipation. The devices switch to a low-

quiescent-current (IQ) LDO mode of operation at light

load. During the key-off condition, the system’s microcon-

troller drives the LDO/BUCK input on the fly and forces

the MAX5096/MAX5097 into LDO mode, thereby reduc-

ing the quiescent current significantly.

In Buck mode, the MAX5096/MAX5097 operate from a

5V to 40V input voltage range and deliver up to 600mA

of load current with excellent load and line regulation.

The fixed-switching frequency versions of 135kHz and

330kHz are available. The MAX5096/MAX5097 DC-DC

internal oscillator can be synchronized to an external

clock. External compensation and a current-mode control

scheme make it easy to design with.

In LDO mode, the MAX5096/MAX5097 operate from a 4V

to 40V input voltage. The LDO mode operation is intended

for a lower output load current of up to 100mA. The quies-

cent current at 100μA load in LDO mode is only 41μA (typ).

The MAX5096/MAX5097 feature an enable input that

shuts down the device, reducing the current consump-

tion to 6μA (typ). Additional features include a power-on-

reset output with a capacitor-adjustable timeout period,

programmable soft-start, output tracking, output overload,

short-circuit, and thermal-shutdown protections.

The MAX5096/MAX5097 operate over the -40°C to

+125°C automotive temperature range and are available

in thermally enhanced 20-pin TSSOP or 16-pin TQFN

packages.

Applications

●● Industrial

Dual Mode is a trademark of Maxim Integrated Products, Inc.

Features

●● High-Efficiency Switcher Mode (Buck Mode) or Low-

Quiescent-Current Linear Regulator (LDO Mode)

Operation

●● Wide Operating Input Voltage Range

• +5V to +40V Buck Mode

• +4V to +40V LDO Mode

●● Fixed 3.3V or 5V and Adjustable (1.24V to 11V)

Output Voltage Versions

●● 6μA (typ) Shutdown Current

●● Fixed 135kHz or 330kHz Switching Frequency

●● External Frequency Synchronization

●● Programmable Soft-Start

●● Integrated Microprocessor-Reset (RESET) Circuit

with Programmable Timeout Period

●● Thermal and Short-Circuit Protection

●● -40°C to +125°C Automotive Temperature Range

●● Thermally Enhanced Package Dissipates 2.6W at

TA = +70°C (16-Pin TQFN) and 1.7W at TA = +70°C

(20-Pin TSSOP)

Ordering Information

PART

TEMP RANGE PIN-PACKAGE

MAX5096AATE+ -40°C to +125°C 16 TQFN-EP*

MAX5096BATE+ -40°C to +125°C 16 TQFN-EP*

MAX5096AAUP+ -40°C to +125°C 20 TSSOP-EP*

MAX5096BAUP+ -40°C to +125°C 20 TSSOP-EP*

MAX5097AATE+ -40°C to +125°C 16 TQFN-EP*

MAX5097BATE+ -40°C to +125°C 16 TQFN-EP*

MAX5097AAUP+ -40°C to +125°C 20 TSSOP-EP*

MAX5097BAUP+ -40°C to +125°C 20 TSSOP-EP*

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

*EP = Exposed pad.

Pin Configurations

TOP VIEW

16 15 14 13

+

PGND 1

SGND 2

RESET 3

MAX5096

MAX5097

BP 4

5

6

7

8

TQFN

TOP VIEW

+

IN 1

12 EN

11 OUT

IN 2

IN 3

PGND 4

10 ADJ

SGND 5

RESET 6

9 LDO/BUCK

BP 7

MAX5096

MAX5097

N.C. 8

SYNC 9

SS 10

TSSOP

20 LX

19 LX

18 N.C.

17 EN

16 OUT

15 ADJ

14 N.C.

13 LDO/BUCK

12 COMP

11 CT

19-0603; Rev 4; 1/15

Share Link: