MAX14573EUD+T Maxim Integrated, MAX14573EUD+T Datasheet

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MAX14573EUD+T

Manufacturer Part Number
MAX14573EUD+T
Description
Supervisory Circuits Adj Over-V/C Protector
Manufacturer
Maxim Integrated
Series
MAX14571, MAX14572, MAX14573r
Datasheet

Specifications of MAX14573EUD+T

Rohs
yes
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.
The MAX14571/MAX14572/MAX14573 adjustable over-
voltage- and overcurrent-protection devices are ideal
to protect systems against positive and negative input
voltage faults up to Q40V and feature low 100mI (typ)
R
The overvoltage-protector (OVP) feature protects voltages
between 6V and 36V, while the undervoltage-protector
(UVP) feature protects voltages 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 19.2V (typ).
The ICs also feature programmable current-limit protec-
tion up to 4.2A. Once current reaches the threshold,
the MAX14571 turns off after the 20.7ms (typ) blanking
time and stays off during the retry period. The MAX14572
latches off after the blanking time, and the MAX14573
limits the current continuously. In addition, these devices
feature reverse current and thermal-shutdown protection.
The ICs are available in a small 14-pin TSSOP (5mm x
6.5mm) package and are specified over the extended
-40NC to +85NC temperature range.
ON
FETs.
Industrial Equipment
Consumer Electronics
Marine Equipment
Battery-Powered Applications
SYSTEM
INPUT
V
Adjustable Overvoltage and Overcurrent
POWER
General Description
C
IN
Applications
MAX14571/MAX14572/MAX14573
NOTE: R1, R2, R3, AND R4 ARE ONLY REQUIRED FOR ADJUSTABLE
R3
R4
OVLO/UVLO; OTHERWISE, CONNECT UVLO/OVLO TO GND.
Protectors with High Accuracy
R1
R2
IN
IN
IN
UVLO
OVLO
SET1
S Wide 4.5V to 36V Operating Input Range
S Adjustable OVLO and UVLO Thresholds
S Programmable Forward Current Limit
S 100mω (typ) On-Resistance FET
S Dual-Enable Inputs
S Reverse Current Flow Control Input, RIEN
S Thermal-Shutdown Protection
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
*EP = Exposed pad.
MAX14571EUD+T
MAX14572EUD+T
MAX14573EUD+T
MAX14571
MAX14572
MAX14573
GND
±3% Accurate Preset Thresholds
Automatic Internal and External Selection
Adjustable Current Limit Up to 4.2A
±15% Accuracy Limit
High-Voltage-Capable Input, HVEN
Microprocessor Input, EN
PART
HVEN
FLAG
RIEN
OUT
OUT
OUT
EN
Typical Operating Circuit
-40NC to
-40NC to
-40NC to
RANGE
TEMP
+85NC
+85NC
+85NC
Ordering Information
EVALUATION KIT AVAILABLE
V
PULLUP
C OUT
PIN-
PACKAGE
14 TSSOP-
EP*
14 TSSOP-
EP*
14 TSSOP-
EP*
SYSTEM
19-6470; Rev 1; 12/12
OVERCURRENT
PROTECTION
Features
Continuous
Autoretry
Latchoff

Related parts for MAX14573EUD+T

MAX14573EUD+T Summary of contents

Page 1

... Accuracy Limit S 100mω (typ) On-Resistance FET S Dual-Enable Inputs High-Voltage-Capable Input, HVEN Microprocessor Input Reverse Current Flow Control Input, RIEN S Thermal-Shutdown Protection PART MAX14571EUD+T MAX14572EUD+T Applications MAX14573EUD+T +Denotes a lead(Pb)-free/RoHS-compliant package Tape and reel. *EP = Exposed pad MAX14571 R3 R1 MAX14572 ...

Page 2

... OVLO_LEAK OVLO V OVLOSEL I (Note 5) UVLO_LEAK +70NC 24V 12kI ISET MIN TYP 4 -35 GND 490 17.5 18.5 18.2 19 0.3 -100 4.5 0.3 -100 1.186 1.210 = +25°C.) (Note 3) A MAX UNITS 700 19 0.50 V +100 0.50 V +100 nA 1.234 V Maxim Integrated ...

Page 3

... THERMAL PROTECTION Thermal Shutdown Thermal-Shutdown Hysteresis TIMING CHARACTERISTICS (Note 7) Switch Turn-On Time Switch Turn-Off Time Overvoltage Switch Turn-Off Time Overcurrent Switch Turn-Off Time IN Debounce Time Blanking Time Autoretry Time Maxim Integrated MAX14571/MAX14572/MAX14573 Protectors with High Accuracy SYMBOL CONDITIONS 100mA LOAD IN ...

Page 4

... Limits over the operating temperature range are guaranteed by A AUTORETRY VERSIONS RETRY BLANK RETRY = 24V 12kI ISET MIN TYP Q15 Timing Diagrams t t BLANK BLANK t RETRY THE DEVICE COMES OUT OF THERMAL SHUTDOWN MODE THE DEVICE GOES TO THERMAL SHUTDOWN MODE = +25°C.) (Note 3) A MAX UNITS kV Maxim Integrated ...

Page 5

... NOTE: TIME NOT IN SCALE Figure 2. Latch-Off Fault Diagram t BLANK OUT CURRENT LIMIT LOAD CURRENT FLAG NOTE: TIME NOT IN SCALE Figure 3. Continuous Fault Diagram Maxim Integrated MAX14571/MAX14572/MAX14573 Protectors with High Accuracy LATCH VERSION t BLANK THE DEVICE GOES THE DEVICE COMES TO THERMAL OUT OF THERMAL ...

Page 6

... STATUS Typical Operating Characteristics IN SUPPLY CURRENT vs. TEMPERATURE 1.0 SETI UNCONNECTED 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0 -40 -15 10 TEMPERATURE (°C) Timing Diagrams (continued) t DEB ON NORMALIZED ON-RESISTANCE vs. SUPPLY VOLTAGE 1.3 1 +85°C A 1.1 1.0 0 -40° +24V IN 0 SUPPLY VOLTAGE ( +25° 100mA OUT Maxim Integrated ...

Page 7

... SHUTDOWN REVERSE CURRENT vs. TEMPERATURE -24V LOW HVEN = 100kI PULLUP OUT = OVLO = UVLO = GND 0 -40 - TEMPERATURE (°C) Maxim Integrated MAX14571/MAX14572/MAX14573 Protectors with High Accuracy Typical Operating Characteristics (continued) NORMALIZED CURRENT LIMIT vs. SUPPLY VOLTAGE 1.10 1.08 1.06 1.04 1.02 1.00 0.98 0.96 0.94 0.92 0. ...

Page 8

... Do not use EP as the single GND connection. 8 TOP VIEW + MAX14571 UVLO 4 MAX14572 MAX14573 OVLO 5 SETI 6 GND 7 *EP TSSOP *CONNECT EXPOSED PAD TO GND FUNCTION Pin Configuration 14 OUT 13 OUT OUT 12 11 FLAG RIEN 8 HVEN Pin Description Maxim Integrated ...

Page 9

... Adjustable Overvoltage and Overcurrent UVLO V SEL OVLO V SEL Maxim Integrated MAX14571/MAX14572/MAX14573 Protectors with High Accuracy MAX14571 MAX14572 MAX14573 REVERSE-INPUT REVERSE-CURRENT PROTECTION V BG SETI Functional Diagram N CONTROL LOGIC THERMAL SHUTDOWN GND OUT OUT OUT RIEN FLAG EN HVEN 9 ...

Page 10

... BLANK and 600ms (typ) t BLANK Latch-Off (MAX14572) The timer resets when BLANK . Continuous Current Limit (MAX14573) and deasserts when the overload condition is BLANK Reverse-Current Enable (RIEN) Fault Flag Output    RETRY , the RETRY timer BLANK BLANK Maxim Integrated ...

Page 11

... EN) for the devices. HVEN is a high-voltage-capable input. Toggle HVEN reset the fault condition once a short circuit is detected and the devices shut down (Table 1). Maxim Integrated MAX14571/MAX14572/MAX14573 Protectors with High Accuracy The ICs feature input debounce protection. When the input voltage is higher than the UVLO threshold voltage for a period greater than the debounce time (t internal FETs are turned on ...

Page 12

... UNDER TEST Figure 5b. Human Body Current Waveform × IN(MAX) OUT(MAX (MAX RETRY ESD Test Conditions HBM ESD Protection I 100 90% AMPERES 36.8% 10% 0 TIME CURRENT WAVEFORM × t BLANK BLANK PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) Maxim Integrated ...

Page 13

... Adjustable Overvoltage and Overcurrent Chip Information PROCESS: BiCMOS Maxim Integrated MAX14571/MAX14572/MAX14573 Protectors with High Accuracy For the latest package outline information and land patterns (foot- prints www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. ...

Page 14

... Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed ...

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