MAX14575CETA+T Maxim Integrated, MAX14575CETA+T Datasheet

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MAX14575CETA+T

Manufacturer Part Number
MAX14575CETA+T
Description
Power Switch ICs - Power Distribution 250mA-2.5A Adj Current-Limit Switch
Manufacturer
Maxim Integrated
Datasheet

Specifications of MAX14575CETA+T

Rohs
yes
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
250mA to 2.5A Adjustable Current-Limit Switches
The MAX14575A/MAX14575AL/MAX14575B/MAX14575C
programmable current-limit switches feature internal
current limiting to prevent damage to host devices due
to faulty load conditions. These current-limit switches
feature a low 32mI (typ) on-resistance and operate from
a +2.3V to +5.5V input voltage range. The current limit
is adjustable from 250mA to 2.5A, making these devices
ideal for charging a large load capacitor as well as for
high-current load switching applications.
Each device in the family handles an overcurrent event
differently depending on the option selected. The
MAX14575A/MAX14575AL feature an autoretry mode,
the MAX14575A has active high, and the MAX14575AL
has active-low EN polarity. The MAX14575B has latch-
off mode, and the MAX14575C features a continuous
current-limit mode. Additional safety features include
thermal shutdown protection to prevent overheating and
reverse current blocking to prevent current from being
driven back into the source (see the Selector Guide).
The MAX14575A/MAX14575AL/MAX14575B/MAX14575C
are available in a small 8-pin, 2mm x 2mm TDFN pack-
age and operate over the -40NC to +85NC extended
temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
*EP = Exposed pad.
MAX14575AETA+T
MAX14575ALETA+T
MAX14575BETA+T
MAX14575CETA+T
PART
SUPPLY
POWER
µP
V
PULLUP
General Description
10kΩ
PIN-PACKAGE
8 TDFN-EP*
8 TDFN-EP*
8 TDFN-EP*
8 TDFN-EP*
R
1µF
SETI
*() FOR THE MAX14575AL ONLY
IN
SETI
FLAG
EN(EN)*
MAX14575A/MAX14575AL*
MAX14575B/MAX14575C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
MAX14575A/MAX14575AL/
MAX14575B/MAX14575C
Ordering Information/Selector Guide
S
S
S
S
S
S
S
S
S
S
REFERENCE
GND
CURRENT
Adjustable Current Limit (250mA to 2500mA)
Accurate ±10% Overload Current Limit (500mA to
2.5A)
32mI (typ) Low R
+2.3V to +5.5V Supply Voltage Range
Reverse Current Protection
Short-Circuit Protection
Thermal Shutdown Protection
130µA (typ) Low Supply Current
1µA (max) Shutdown Reverse Current
Small, 8-Pin, 2mm x 2mm TDFN Package
RF Power Amplifier in
Cell Phones
USB Ports
Data Modem Cards
EN POLARITY
Active-High
Active-High
Active-High
Active-Low
Typical Operating Circuit
CONTROL
VOLTAGE
CHARGE
LOGIC
PUMP
BIAS
ON
OVERCURRENT
OUT
RESPONSE
Continuous
Autoretry
Autoretry
Latch-off
Portable Media Players
UTCA/ATCA Platforms
SDXC Card Power-Supply
Protection
1µF
Applications
LOAD
19-6458; Rev 0; 9/12
Features
TOP MARK
BMW
BMV
BMX
BMY

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MAX14575CETA+T Summary of contents

Page 1

... TDFN pack- age and operate over the -40NC to +85NC extended temperature range. PART PIN-PACKAGE MAX14575AETA+T 8 TDFN-EP* 8 TDFN-EP* MAX14575ALETA+T MAX14575BETA+T 8 TDFN-EP* MAX14575CETA+T 8 TDFN-EP* +Denotes a lead(Pb)-free/RoHS-compliant package Tape and reel. *EP = Exposed pad. POWER SUPPLY 1µF V PULLUP µP ...

Page 2

... C IN MIN TYP 2 130 6 = 5.5V, IN 0.1 = 0V, IN 0.07 = 100mA, OUT 32 2250 2500 450 500 200 250 135 1. 172 215 IN OUT 25 100 345 = 3.3V 1FF 1FF, IN OUT MAX UNITS 5.5 V 275 3 2750 550 mA 300 kV kI 258 145 mV mV Maxim Integrated ...

Page 3

... Note 3: Blanking time and retry time are generated by the same internal oscillator. The ratio of EN(EN)* V OUT *() THE POLARITY OF THE SIGNAL IS REVERSED FOR THE MAX14575AL ONLY. Figure 1. Timing Diagram for Measuring Turn-On Time (t Maxim Integrated MAX14575A/MAX14575AL/ MAX14575B/MAX14575C SYMBOL CONDITIONS I EN GND ...

Page 4

... CURRENT LIMIT LOAD CURRENT FLAG Figure 2. Autoretry Fault Diagram THE DEVICE GOES TO THERMAL-SHUTDOWN MODE Figure 3. Latchoff Fault Diagram BLANK RETRY BLANK RETRY t BLANK OUT CURRENT LIMIT LOAD CURRENT FLAG t t BLANK BLANK THE DEVICE GOES TO THERMAL-SHUTDOWN MODE t BLANK Maxim Integrated ...

Page 5

... TEMPERATURE (°C) SHUTDOWN REVERSE CURRENT vs. TEMPERATURE 1 0 5.5V OUT V = 2.3V 0.8 IN 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -40 - TEMPERATURE (°C) Maxim Integrated MAX14575A/MAX14575AL/ MAX14575B/MAX14575C Typical Operating Characteristics = 94.2kI +25NC, unless otherwise noted.) SETI A NORMALIZED CURRENT LIMIT vs. TEMPERATURE 1.3 1.2 1.1 1.0 0.9 0.8 0.7 5.5 -40 - TEMPERATURE (°C) SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE 1 ...

Page 6

... NO OUTPUT CAPACITOR + 3. -40 - TEMPERATURE (°C) CURRENT-LIMIT RESPONSE MAX14575A toc13 20ms/div SHORT TO GROUND APPLIED +3. FLAG 2V/div I OUT 1A/div 200mA OUT TO SHORT APPLIED +3. OUT 2V/div I OUT 1A/div Maxim Integrated ...

Page 7

... Adjustable Current-Limit Switches PIN MAX14575AL MAX14575_ — — — — Maxim Integrated MAX14575A/MAX14575AL/ MAX14575B/MAX14575C TOP VIEW GND EN(EN)** MAX14575A MAX14575AL MAX14575B MAX14575C EP FLAG SETI OUT TDFN (2mm × 2mm) *CONNECT EXPOSED PAD TO GND ...

Page 8

... Functional Diagram OUT FLAG SETI ) has elapsed. A retry BLANK ) starts immediately after the blanking , the switch turns on again. If the RETRY , when the switch is RETRY t BLANK × I LIM + t t BLANK RETRY = 15ms and t = 500ms, the RETRY Maxim Integrated BLANK ...

Page 9

... Table 1. Switch Truth Table MAX14575A/B/C MAX14575AL Maxim Integrated MAX14575A/MAX14575AL/ MAX14575B/MAX14575C • The reverse current protection has tripped • The die temperature exceeds +160NC • SETI is connected to ground has elapsed. The switch Thermal shutdown circuitry protects the devices from overheating. The switch turns off and FLAG goes low immediately when the junction temperature exceeds +160NC (typ) ...

Page 10

... Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE EP 8 TDFN-EP ~100I* Layout and Thermal Dissipation V × I IN(MAX) OUT(MAX (MAX RETRY BLANK Chip Information Package Information PACKAGE OUTLINE TYPE CODE NO. T822+2 21-0168 × t BLANK LAND PATTERN NO. 90-0065 Maxim Integrated ...

Page 11

... Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 2012 Maxim Integrated Products, Inc. © MAX14575A/MAX14575AL/ MAX14575B/MAX14575C DESCRIPTION Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. Revision History PAGES CHANGED — 11 ...

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