Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - LDO voltage regulator Positive, fixed or adjustable TQFN 16 (5x5)

General Description

The MAX5086 high-voltage linear regulator operates

from a 6.5V to 45V input voltage and delivers up to

a 250mA output current. The device consumes only

70µA of quiescent current with no load and 13µA in

shutdown. The device includes a SET input, that when

connected to ground, selects a preset output voltage of

3.3V (MAX5086A) or 5.0V (MAX5086B). Alternatively,

the output voltage can be adjusted from 2.5V to 11V by

simply connecting SET to the regulator’s output through a

resistive divider network. The MAX5086 also provides an

open-drain, active-low microprocessor reset output that

asserts when the regulator output drops below the preset

output voltage threshold. An external capacitor programs

the reset timeout period. Other features include an enable

input, thermal shutdown, and short-circuit protection.

The MAX5086 operates over the automotive temperature

range of -40°C to +125°C and is available in a 16-pin

TQFN thermally enhanced package.

Applications

● Industrial

● Home Security/Safety

● Networking

Features

● Wide Operating Input Voltage Range (6.5V to 45V)

● Thermally Enhanced Package Dissipates

2.6W at T

= +70°C (16-Pin TQFN)

● Guaranteed 250mA Output Current

● 70µA Quiescent Supply Current

● Preset 3.3V, 5.0V, or Adjustable 2.5V to 11V

Output Voltage

● Remote Load Sense

● Integrated Microprocessor Reset Circuit with

Programmable Timeout Period

● Thermal and Short-Circuit Protection

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

19-3878; Rev 3; 5/14

Note: All devices are specified over the -40°C to +125°C oper-

ating temperature range.

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

*EP = Exposed pad.

PART

OUTPUT

VOLTAGE (V)

PIN-PACKAGE

MAX5086AATE+ 3.3 16 TQFN-EP*

MAX5086AATE 3.3 16 TQFN-EP*

MAX5086BATE+ 5.0 16 TQFN-EP*

MAX5086BATE 5.0 16 TQFN-EP*

11 10 9

OUT

OUTSENSE

GND

TOP VIEW

N.C.

1 2 3 4

N.C.

MAX5086

N.C.

RESET

SET

TQFN

MAX5086 45V, 250mA, Low-Quiescent-Current

Linear Regulator with Adjustable Reset Delay

Pin Conguration

Ordering Information

EVALUATION KIT AVAILABLE

Summary of content (12 pages)

PAGE 1
EVALUATION KIT AVAILABLE MAX5086 45V, 250mA, Low-Quiescent-Current Linear Regulator with Adjustable Reset Delay General Description The MAX5086 high-voltage linear regulator operates from a 6.5V to 45V input voltage and delivers up to a 250mA output current. The device consumes only 70µA of quiescent current with no load and 13µA in shutdown. The device includes a SET input, that when connected to ground, selects a preset output voltage of 3.3V (MAX5086A) or 5.0V (MAX5086B).
PAGE 2
MAX5086 45V, 250mA, Low-Quiescent-Current Linear Regulator with Adjustable Reset Delay Absolute Maximum Ratings IN to GND (do not exceed package power dissipation)................................-0.3V to +50V IN to GND (T ≤ 300ms, IOUT ≤ 250mA).................-0.3V to +42V EN to GND.............................................................-0.3V to +50V RESET, OUT, OUTSENSE to GND.......................-0.3V to +12V CT, SET to GND....................................................-0.3V to +3.
PAGE 3
MAX5086 45V, 250mA, Low-Quiescent-Current Linear Regulator with Adjustable Reset Delay Electrical Characteristics (continued) (VIN = 14V, IOUT = 1mA, CIN = 47µF (low ESR), COUT = 15µF, VEN = 2.4V, 10kΩ from RESET to OUT, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical specifications are at TA = +25°C.) (Note 2) PARAMETER Enable Input Current SYMBOL IEN CONDITIONS MIN TYP VEN = 2.4V 0.38 VEN = 14V 3.75 MAX UNITS µA SET Reference Voltage VSET 1.20 1.235 1.
PAGE 4
MAX5086 45V, 250mA, Low-Quiescent-Current Linear Regulator with Adjustable Reset Delay Typical Operating Characteristics = VEN = 14V, CIN = 47µF (low ESR), COUT = 15µF, VOUT = 5V, SET = GND, TA = +25°C, unless otherwise specified.) 140 120 3.5 100 IGND (A) 4.0 3.0 2.5 60 1.5 40 1.0 15 20 25 30 35 40 0 45 TEMPERATURE (°C) TEMPERATURE (°C) OUTPUT VOLTAGE vs. TEMPERATURE GROUND CURRENT vs. TEMPERATURE OUTPUT VOLTAGE vs. LOAD CURRENT AND TEMPERATURE 5.15 3.0 IGND (mA) VOUT (V) 5.
PAGE 5
MAX5086 45V, 250mA, Low-Quiescent-Current Linear Regulator with Adjustable Reset Delay Typical Operating Characteristics (continued) (VIN = VEN = 14V, CIN = 47µF (low ESR), COUT = 15µF, VOUT = 5V, SET = GND, TA = +25°C, unless otherwise specified.) INPUT VOLTAGE STEP RESPONSE STARTUP RESPONSE MAX5086 toc10 IOUT = 50mA ENABLE STARTUP RESPONSE MAX5086 toc12 MAX5086 toc11 IOUT = 5mA VOUT AC-COUPLED 500mV/div 0V 26V VIN 10V/div 6.
PAGE 6
MAX5086 45V, 250mA, Low-Quiescent-Current Linear Regulator with Adjustable Reset Delay Pin Description PIN NAME 1, 12–16 N.C. 2 EN Enable Input. Drive EN high to turn on the regulator. Force EN low to place the device in shutdown mode. 3, 4 IN Regulator Input. Supply voltage ranges from 6.5V to 45V. Bypass IN to GND with a low ESR 47µF capacitor (electrolytic 50VL). 5, 6 OUT 7 OUTSENSE 8 GND Ground 9 SET Feedback Regulation Set Point. Connect SET to GND for a fixed 3.
PAGE 7
MAX5086 45V, 250mA, Low-Quiescent-Current Linear Regulator with Adjustable Reset Delay IN ERROR AMPLIFIER MAX5086 OUT VREF OUTSENSE CONTROL LOGIC, THERMAL SHUTDOWN, AND OVERCURRENT PROTECTION MUX EN INTERNAL SUPPLY VOLTAGE SET 2µA CT DELAY COMPARATOR CT COMPARATOR RESET 0.92 x VREF GND Figure 1. Functional Diagram www.maximintegrated.
PAGE 8
MAX5086 45V, 250mA, Low-Quiescent-Current Linear Regulator with Adjustable Reset Delay Detailed Description The MAX5086 high-voltage linear regulator includes an integrated microprocessor reset circuit with an adjustable reset timeout period (see the Adjustable Reset Timeout Period (CT) section). The device guarantees a 250mA load current and is available with a preset output voltage of 3.3V (MAX5086A) or 5V (MAX5086B). Both devices can be configured to provide an adjustable output voltage from 2.
PAGE 9
MAX5086 45V, 250mA, Low-Quiescent-Current Linear Regulator with Adjustable Reset Delay Applications Information Output Voltage Selection MAXIMUM POWER DISSIPATION vs. TEMPERATURE MAX5086 fig03 4.0 3.5 3.0 2.5 PD (W) The MAX5086 features dual-mode operation, in either a preset voltage mode or an adjustable mode. In preset voltage mode, internal feedback resistors set the MAX5086’s output voltage to +3.3V or +5V. Select preset voltage mode by connecting SET to ground.
PAGE 10
MAX5086 45V, 250mA, Low-Quiescent-Current Linear Regulator with Adjustable Reset Delay Example 2: TA = +125°C 0.30 Calculate package dissipation at the given temperature as follows: 0.25 = PD 2.666W − 0.0333 W (125°C − 70= °C) 0.8345W °C And establish the maximum current: = I OUT(MAX) (0.8345W) = 92mA (14V) − (5V) Example 3: IOUT(MAX) (A) VOUT = +5V VOUT = +5V MAX5086 fig04 MAXIMUM OUTPUT CURRENT vs. INPUT VOLTAGE VIN = +14V TA = +70°C TA = +85°C TA = +125°C 0.20 0.15 0.10 0.
PAGE 11
MAX5086 45V, 250mA, Low-Quiescent-Current Linear Regulator with Adjustable Reset Delay Package Information For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.
PAGE 12
MAX5086 45V, 250mA, Low-Quiescent-Current Linear Regulator with Adjustable Reset Delay Revision History REVISION NUMBER REVISION DATE PAGES CHANGED 1 7/06 Updated data sheet with improved output voltage parameters 2 2/08 Corrected errors in data sheet, reduced operating range, and removed unreleased product from the Ordering Information table 3 5/14 Removed “Automotive” from the Applications section DESCRIPTION 2 1–15 1 For pricing, delivery, and ordering information, please contact Maxim Di