Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsDiodesMAX14588ETE+

MAX14588 1A Adjustable Overcurrent and Overvoltage

Protector with High Accuracy

General Description

The MAX14588 adjustable overvoltage and overcurrent

protection device is ideal for protecting systems against

positive and negative input voltage faults up to ±40V, and

feature low 190mΩ (typ) R

integrated FETs.

The adjustable overvoltage range is between 6V and 36V,

while the adjustable undervoltage range is between 4.5V

and 24V. The overvoltage lockout (OVLO) and undervoltage

lockout (UVLO) thresholds are set using optional external

resistors. The factory preset internal OVLO threshold is 33V

(typ), and the preset internal UVLO threshold is 19V (typ).

The MAX14588 also features programmable current-limit

protection up to 1A. The device can be set for autoretry,

latch-off, or continuous fault response when an overcur-

rent event occurs. Once current reaches the threshold, the

MAX14588 turns off after 21ms (typ) blanking time, and

stays off during the retry period when set to autoretry mode.

The device latches off after the blanking time when set to

latch-off mode. The device limits the current continuously

when set to continuous mode. The MAX14588 also features

reverse current and thermal shutdown protection.

The MAX14588 is available in a small, 16-pin (3mm x 3mm)

TQFN package. The MAX14588 operates over the -40°C to

+125°C extended temperature range.

Benets and Features

● Robust Industrial Power Protection

• Wide Input Supply Range: +4.5V to +36V

• Negative Input Tolerance to -36V

• Low R

190mΩ (typ)

• Reverse Current Flow Control Input

• Thermal Overload Protection

• Extended -40ºC to +125ºC Temperature Range

● Flexible Design Options

• Adjustable OVLO and UVLO Thresholds

• Programmable Forward-Current Limit: 0.15A to 1A

• Programmable Overcurrent Fault Response:

Autoretry, Latch-Off, and Continuous

• Dual Enable Inputs: EN and High Voltage HVEN

● Saves Space

• 16-Pin, 3mm x 3mm, TQFN Package

Applications

● Sensor Systems

● Condition Monitoring

● Factory Sensors

● Process Analytics

● Process Instrumentation

● Weighing and Batching Systems

19-6551; Rev 0; 12/12

Ordering Information appears at end of data sheet.

For related parts and recommended products to use with this part, refer

to www.maximintegrated.com/MAX14588.related.

Typical Application Circuit

EVALUATION KIT AVAILABLE

UVLO

OVLO

SETI

OUT

CLHS

CLTS1

CLTS2

CLTS_MODE

GND

HVEN

R2R4

SYSTEM

POWER

SUPPLY

OPTIONAL FOR

HIGH INPUT

SURGE

APPLICATIONS

SYSTEM

POWER

0.47µF

RIEN

4.7µF

FLAG

HVEN

MAX14588

100kΩ

Summary of content (15 pages)

PAGE 1
EVALUATION KIT AVAILABLE MAX14588 1A Adjustable Overcurrent and Overvoltage Protector with High Accuracy General Description The MAX14588 adjustable overvoltage and overcurrent protection device is ideal for protecting systems against positive and negative input voltage faults up to ±40V, and feature low 190mΩ (typ) RON integrated FETs. The adjustable overvoltage range is between 6V and 36V, while the adjustable undervoltage range is between 4.5V and 24V.
PAGE 2
MAX14588 1A Adjustable Overcurrent and Overvoltage Protector with High Accuracy Absolute Maximum Ratings (All voltages referenced to GND.) IN to GND................................................................-40V to +40V IN to OUT................................................................-40V to +40V OUT........................................................................-0.3V to +40V HVEN......................................................................
PAGE 3
MAX14588 1A Adjustable Overcurrent and Overvoltage Protector with High Accuracy Electrical Characteristics (continued) (VIN = 4.5V to 36V, TA = -40ºC to +125ºC, unless otherwise noted. Typical values are at VIN = 24V, RSETI = 12kΩ, TA = +25ºC.) (Note 3) PARAMETER External UVLO Leakage BG Reference Voltage CLHS Voltage SYMBOL IUVLO_LEAK CONDITIONS VUVLO < 1.2V VBG VCLHS Source 100µA MIN TYP -100 1.196 1.220 23 3.5 MAX UNITS +100 nA 1.
PAGE 4
MAX14588 1A Adjustable Overcurrent and Overvoltage Protector with High Accuracy Electrical Characteristics (continued) (VIN = 4.5V to 36V, TA = -40ºC to +125ºC, unless otherwise noted. Typical values are at VIN = 24V, RSETI = 12kΩ, TA = +25ºC.
PAGE 5
MAX14588 1A Adjustable Overcurrent and Overvoltage Protector with High Accuracy Timing Diagrams (continued) LATCH VERSION tBLANK tBLANK OUT CURRENT LIMIT LOAD CURRENT THE DEVICE GOES TO THERMAL SHUTDOWN MODE THE DEVICE COMES OUT OF THERMAL SHUTDOWN MODE INPUT OR EN CYCLE FLAG NOTE: TIME NOT IN SCALE Figure 2.
PAGE 6
MAX14588 1A Adjustable Overcurrent and Overvoltage Protector with High Accuracy Timing Diagrams (continued) < tDEB < tDEB tDEB UVLO THRESHOLD VIN ON OFF SWITCH STATUS NOTE: TIME NOT IN SCALE Figure 4. Debounce Timing Typical Operating Characteristics (CIN = 1µF, COUT = 1µF, TA = +25°C, unless otherwise noted.) 700 600 500 400 300 200 400 VIN = 12V VIN = 24V 300 200 100 100 0 500 0 10 20 30 IN VOLTAGE (V) www.maximintegrated.com 40 0 NORMALIZED ON-RESISTANCE vs. SUPPLY VOLTAGE 1.
PAGE 7
MAX14588 1A Adjustable Overcurrent and Overvoltage Protector with High Accuracy Typical Operating Characteristics (continued) (CIN = 1µF, COUT = 1µF, TA = +25°C, unless otherwise noted.) 0.9 VIN = 12V 0.8 0.7 1.01 1.00 0.99 0.98 0.97 0.6 0.96 0.5 0.95 -40 -25 -10 5 20 35 50 65 80 95 110 125 0 10 8 6 VIN = 24V 4 2 0 VIN = 12V -40 -25 -10 5 20 35 50 65 80 95 110 125 0.3 0.2 VIN = 32V VIN = 24V VIN = 12V 0.1 45 VIN = 24V RL = 24Ω 35 30 25 20 15 10 MAX14588 toc06 0.99 0.98 0.
PAGE 8
MAX14588 1A Adjustable Overcurrent and Overvoltage Protector with High Accuracy Typical Operating Characteristics (continued) (CIN = 1µF, COUT = 1µF, TA = +25°C, unless otherwise noted.
PAGE 9
MAX14588 1A Adjustable Overcurrent and Overvoltage Protector with High Accuracy GND SETI UVLO TOP VIEW FLAG Pin Configuration 12 11 10 9 EN 13 OUT 14 MAX14588 OUT 15 *EP 2 3 CLTS1 OVLO 7 IN 6 IN 5 HVEN 4 CLTS2 1 CLHS + CLTS_MODE RIEN 16 8 TQFN *CONNECT EP TO GND Pin Description PIN NAME FUNCTION 1 CLTS_MODE 2 CLHS Current-Limit-Type-Select Logic-High Voltage. Connect CLTS_MODE/CLTS1/CLTS2 to CLHS for logic-high. 3 CLTS1 Current-Limit-Type Select 1. See Table 1.
PAGE 10
MAX14588 1A Adjustable Overcurrent and Overvoltage Protector with High Accuracy Pin Description (continued) PIN NAME FUNCTION 12 FLAG Open-Drain Fault Indicator Output. FLAG goes low when the fault duration exceeds the blanking time, reverse current is detected, thermal shutdown mode is active, OVLO threshold is reached, or SETI is connected to GND. 13 EN 14,15 OUT Output Voltage. Output of internal FETs. Bypass OUT to GND with a 1µF ceramic capacitor placed as close to the device as possible.
PAGE 11
MAX14588 1A Adjustable Overcurrent and Overvoltage Protector with High Accuracy Detailed Description The MAX14588 is an adjustable overvoltage and overcurrent protection device designed to protect systems against positive and negative input voltage faults up to ±40V, and features a low 190mΩ (typ) on-resistance FET. If the input voltage exceeds the OVLO threshold or falls below the UVLO, the internal FETs are turned off to prevent damage to the protected components.
PAGE 12
MAX14588 1A Adjustable Overcurrent and Overvoltage Protector with High Accuracy Thermal Shutdown Protection The MAX14588 has a thermal-shutdown feature to protect the device from overheating. The device turns off and the FLAG asserts when the junction temperature exceeds +150ºC (typ). The devices exit thermal shutdown and resume normal operation after the junction temperature cools by 30ºC (typ), except when in latch off mode, the device remains latched off.
PAGE 13
MAX14588 1A Adjustable Overcurrent and Overvoltage Protector with High Accuracy OUT Bypass Capacitor For stable operation over the full temperature range and over the entire programmable current-limit range, connect a 4.7µF ceramic capacitor from OUT to ground. Excessive output capacitance can cause a false overcurrent condition due to decreased dv/dt across the capacitor.
PAGE 14
MAX14588 1A Adjustable Overcurrent and Overvoltage Protector with High Accuracy Package Information Ordering Information PART TEMP RANGE TOP MARK PINPACKAGE MAX14588ETE+T -40ºC to +125ºC AJZ 16 TQFNEP* + Denotes a lead(Pb)-free package/RoHS-compliant package. T = Tape and reel *EP = Exposed Pad 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.
PAGE 15
MAX14588 1A Adjustable Overcurrent and Overvoltage Protector with High Accuracy Revision History REVISION NUMBER REVISION DATE 0 12/12 DESCRIPTION Initial release PAGES CHANGED — For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product.