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General Description

The MAX1607 is a current-limited 60mΩ switch with

built-in fault blanking. Its accurate, preset 0.7A to 1.0A

current limit makes it ideal for USB applications. Its low

quiescent supply current (14µA) and standby current

(1µA) conserve battery power in portable applications.

The MAX1607 operates with inputs from +2.7V to

+5.5V, making it ideal for both 3V and 5V systems.

An overcurrent signal (OC) notifies the microprocessor

that the internal current limit has been reached. A 10ms

overcurrent-blanking feature allows momentary faults

(such as those caused when hot-swapping into a

capacitive load) to be ignored, thus preventing false

alarms to the host system. This blanking also prevents

an OC signal from being issued when the device is

powering up.

The MAX1607 has several safety features to ensure that

the USB port is protected. Built-in thermal-overload pro-

tection limits power dissipation and junction temperature.

The device also has accurate internal current-limiting

circuitry to protect the input supply against overload.

The MAX1607 is a pin-compatible upgrade to Texas

Instruments’ TPS2014, TPS2015, and TPS2041 for USB

applications. The same die is available in a space-sav-

ing 10-pin µMAX

package (MAX1693) and can be

used for next-generation designs. The MAX1694 is sim-

ilar to the MAX1693, but it has a built-in latch that turns

off the power switch in case of a long-term short-

circuit condition.

The MAX1607 is also offered in a 10-pin TDFN package

(not pin compatible with Texas Instruments TPS2014,

TPS2015, and TPS2041 for USB applications).

Applications

Features

♦ SO Package is Pin Compatible with TPS2014,

TPS2015, and TPS2041

♦ Accurate Current Limit (0.7A min, 1.0A max)

♦ Guaranteed 0.75A Short-Circuit Protection

♦ 10ms Internal OC Blanking Timeout

♦ No Overcurrent (OC) Signal During Power-Up

♦ 125mΩ max High-Side MOSFET

♦ 500mA Continuous Current

♦ Short-Circuit and Thermal Protection with

Overcurrent Logic Output

♦ 1ms Start-Up Time

♦ Undervoltage Lockout

♦ 14µA Quiescent Supply Current

♦ 1µA max Standby Supply Current

♦ +2.7V to +5.5V Supply Range

♦ UL Recognized #E211935

MAX1607

USB Current-Limited Switch

in Pin-Compatible Package

________________________________________________________________ Maxim Integrated Products 1

OUT

OUTIN

GND

TOP VIEW

MAX1607

IN OUTPUTOUT

INPUT

+2.7V TO +5.5V

OFF

GND

Typical Operating Circuit

19-1544; Rev 2; 09/07

Pin Configurations

Ordering Information

Notebook Computers

USB Ports

USB Hubs

Docking Stations

Pin Configurations continued at end of data sheet.

PART

TEMP RANGE

PIN-

PACKAGE

PKG

CODE

MAX1607ESA

-40°C to +85°C

8 SO

S8-5

MAX1607ETB+

-40°C to +85°C 10 TDFN-EP*

T1033-1

*EP = Exposed paddle.

+Denotes a lead-free package.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

Summary of content (10 pages)

PAGE 1
9-1544; Rev 2; 09/07 USB Current-Limited Switch in Pin-Compatible Package The MAX1607 is a current-limited 60mΩ switch with built-in fault blanking. Its accurate, preset 0.7A to 1.0A current limit makes it ideal for USB applications. Its low quiescent supply current (14µA) and standby current (1µA) conserve battery power in portable applications. The MAX1607 operates with inputs from +2.7V to +5.5V, making it ideal for both 3V and 5V systems.
PAGE 2
MAX1607 USB Current-Limited Switch in Pin-Compatible Package ABSOLUTE MAXIMUM RATINGS IN, EN, OC to GND .....................................................-0.3 to +6V OUT to GND ................................................-0.3V to (VIN + 0.3V) Maximum Switch Current.........................1.2A (internally limited) OUT Short-Circuit to GND ..........................................Continuous Continuous Power Dissipation (TA = +70°C) 8-Pin SO (derate 5.88mW/°C above +70°C)................
PAGE 3
USB Current-Limited Switch in Pin-Compatible Package MAX1607 ELECTRICAL CHARACTERISTICS (VIN = +5V, TA = -40°C to +85°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 5.5 V OPERATING CONDITION Input Voltage 3.0 VIN POWER SWITCH Switch Static Drain-Source On-State Resistance RDS(ON) VIN = 4.4V to 5.
PAGE 4
Typical Operating Characteristics (VIN = +5V, TA = +25°C, unless otherwise noted.) 10 8 6 4 14 VIN = 3V 13 12 11 9 1 3 4 5 6 1 0.1 0.01 -40 -20 0 20 40 60 80 100 INPUT VOLTAGE (V) TEMPERATURE (°C) 0 20 40 60 TEMPERATURE (°C) OFF SWITCH CURRENT vs. TEMPERATURE NORMALIZED ON-RESISTANCE vs. TEMPERATURE NORMALIZED OUTPUT CURRENT vs. OUTPUT VOLTAGE 1.4 IOUT = 425mA 1.2 NORMALIZED RON 100 10 1 1.0 0.8 0.6 0.4 0.1 -40 0.2 -20 0 20 40 60 80 -40 100 0.
PAGE 5
USB Current-Limited Switch in Pin-Compatible Package CURRENT-LIMIT AND OC RESPONSE MAX1607-12 MAX1607-11 MAX1607-10 CH1 SWITCH TURN-ON TIME CURRENT-LIMIT RESPONSE CH1 CH1 CH2 CH2 CH2 CH3 CH3 CH3 CH4 CH4 CH4 2ms/div 20μs/div 10μs/div CH1 = VOUT, 5V/div CH2 = VEN, 5V/div CH3 = VOC, 5V/div CH4 = IOUT, 200mA/div CH1 = VIN, 200mV/div, AC-COUPLED CH2 = VOUT, 5V/div CH3 = VOC, 5V/div CH4 = IOUT, 1A/div START-UP TIME (TYPICAL USB APPLICATION) MAX1607-13 SWITCH TURN-OFF TIME MAX1607-14 CH1 =
PAGE 6
USB Current-Limited Switch in Pin-Compatible Package MAX1607 Pin Description PIN NAME FUNCTION SO TDFN 1 6 GND 2, 3 1, 3, 9 IN Input. P-channel MOSFET source. Connect all IN pins together and bypass with a 1µF capacitor to ground. 4 5 EN Active-Low Switch Enable Input. A logic-low turns on the switch. 5 7 OC Overcurrent Indicator Output. This open-drain output goes low when the device is in thermal shutdown or undervoltage lockout, or during a sustained (> 10ms) current-limit condition.
PAGE 7
USB Current-Limited Switch in Pin-Compatible Package Applications Information Input Capacitor To limit the input voltage drop during momentary output short-circuit conditions, connect a capacitor from IN to GND. A 1µF ceramic capacitor will be adequate for most applications; however, higher capacitor values will further reduce the voltage drop at the input (Figure 2). Output Capacitor Connect a 0.1µF capacitor from OUT to GND.
PAGE 8
Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) DIM A A1 B C e E H L N E H INCHES MILLIMETERS MAX MIN 0.069 0.053 0.010 0.004 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.016 0.050 MAX MIN 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 SOICN .EPS MAX1607 USB Current-Limited Switch in Pin-Compatible Package 1.
PAGE 9
USB Current-Limited Switch in Pin-Compatible Package 6, 8, &10L, DFN THIN.EPS _______________________________________________________________________________________ 9 MAX1607 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.
PAGE 10
MAX1607 USB Current-Limited Switch in Pin-Compatible Package Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) COMMON DIMENSIONS PACKAGE VARIATIONS SYMBOL MIN. MAX. PKG. CODE N D2 E2 e JEDEC SPEC b [(N/2)-1] x e A 0.70 0.80 T633-2 6 1.50±0.10 2.30±0.10 0.95 BSC MO229 / WEEA 0.40±0.05 1.90 REF D 2.90 3.10 T833-2 8 1.50±0.10 2.