Maxim MAX1607ESA Datasheet
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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 protection limits power dissipation and junction temperature. The device also has accurate internal currentlimiting 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-saving
10-pin µMAX package (MAX1693) and can be used for
next-generation designs. The MAX1694 is similar 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.
Applications
Notebook Computers
USB Ports
USB Hubs
Docking Stations
Features
♦ 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 Recognition Pending
MAX1607
USB Current-Limited Switch
in Pin-Compatible Package
________________________________________________________________
Maxim Integrated Products
1
Typical Operating Circuit
19-1544; Rev 0; 10/99
PART
MAX1607ESA -40°C to +85°C
TEMP. RANGE PIN-PACKAGE
8 SO
Pin Configuration
Ordering Information
TOP VIEW
GND
IN
EN
1
2
MAX1607
3
4
SO
87OUT
OUTIN
OUT
6
OC
5
INPUT
+2.7V TO +5.5V
OFF
ON
IN OUTPUTOUT
MAX1607
OC
EN
GND
MAX1607
USB Current-Limited Switch
in Pin-Compatible Package
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VIN= +5V, TA= 0°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
IN, EN, OC to GND.....................................................-0.3 to +6V
OUT to GND ................................................-0.3V to (V
IN
+ 0.3V)
Maximum Switch Current.........................1.2A (internally limited)
OUT Short-Circuit to GND..........................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
Operating Temperature Range (extended).........-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
TA= 0°C to +85°C
VEN= VIN= 5.5V,
V
OUT
= GND
Timer running
VEN= VIN= V
OUT
= 5.5V
OUT shorted to GND
Force V
OUT
to 4.5V
VIN= 3.7V to 5.5V
VIN= 2.7V to 3.6V
VIN= 5V, C
OUT
= 150µF from EN driven
low to 50% full V
OUT
I
LOAD
= 400mA
TA= +25°C
TA= 0°C to +85°C
VEN= VINor GND
I
LOAD
= 400mA
VIN= 2.7V to 5.5V
CONDITIONS
µA
15
Supply Leakage Current
0.01 2
µA
35
I
Q
Supply Current, High-Level
Input
14 25
µA
0.001 1
Supply Current, Low-Level Input
mA
500 700
I
SC
Short-Circuit Output Current
mA
700 850 1000
I
LIMIT
Overload Output Current
ms
1
Start-Up Time
µA
-1 1
EN Input Current
V
0.8
V
IL
EN Low-Level Input Voltage
V
2.7 5.5
V
IN
Input Voltage
V
2.4
V
IH
EN High-Level Input Voltage
2.0
µs
3620
t
OFF
Switch Turn-Off Time
60 90
125
mΩ
72 150
R
DS(
ON)
Switch Static Drain-Source
On-State Resistance
µs
80 200
t
ON
Switch Turn-On Time
UNITSMIN TYP MAXSYMBOLPARAMETER
VIN= VOC= 5V
I
SINK
= 1mA, VIN= 3V
Rising edge, 100mV hysteresis
From overcurrent condition to OC assertion
°C
+165
Thermal Shutdown Threshold
ms
71013
t
BL
OC Blanking Timeout Period
µA
1
OC Off-State Current
V
0.4
V
OL
OC Output Low Voltage
V
2.0 2.4 2.6
UVLOUndervoltage Lockout
VIN= 4.4V to 5.5V
VIN= 4.4V to 5.5V
VIN= 3V
Timer not running
VEN= GND, I
OUT
= 0
TA= +25°C
OPERATING CONDITION
POWER SWITCH
ENABLE INPUT (EN)
CURRENT LIMIT
SUPPLY CURRENT
UNDERVOLTAGE LOCKOUT
OVERCURRENT (OC)
THERMAL SHUTDOWN
MAX1607
USB Current-Limited Switch
in Pin-Compatible Package
_______________________________________________________________________________________ 3
Note 1: Specifications to -40°C are guaranteed by design, not production tested.
ELECTRICAL CHARACTERISTICS
(VIN= +5V, TA= -40°C to +85°C, unless otherwise noted.) (Note 1)
VIN= VOC= 5V
I
SINK
= 1mA, VIN= 3V
Rising edge, 100mV hysteresis
VEN= V
IN
= 5.5V, V
OUT
= GND
VEN= GND, I
OUT
= 0, timer not running
VEN= VIN= V
OUT
= 5.5V
VIN= 3.0V to 5.5V
VIN= 3.7V to 5.5V
OUT shorted to GND
Force V
OUT
to 4.5V
VIN= 3.0V to 3.6V
VIN= 4.4V to 5.5V
VIN= 3V
I
LOAD
= 400mA
I
LOAD
= 400mA
VEN= VINor GND
CONDITIONS
µA
1
OC Off-State Current
V
0.4
V
OL
OC Output Low Voltage
V
2.0 2.9
UVLOUndervoltage Lockout
µA
15
Supply Leakage Current
µA
25
I
Q
Supply Current, High-Level
Input
µA
2
Supply Current, Low-Level Input
mA
750
I
SC
Short-Circuit Output Current
mA
640 1060
I
LIMIT
Overload Output Current
µA
-1 1
EN Input Current
V
3.0 5.5
V
IN
Input Voltage
V
0.8
V
IL
EN Low-Level Input Voltage
V
2.4
V
IH
EN High-Level Input Voltage
2.0
125
mΩ
150
R
DS(
ON)
Switch Static Drain-Source
On-State Resistance
µs
200
t
ON
Switch Turn-On Time
µs
120
t
OFF
Switch Turn-Off Time
UNITSMIN TYP MAXSYMBOLPARAMETER
OC Blanking Timeout Period
t
BL
From overcurrent condition to OC assertion
614
ms
OPERATING CONDITION
POWER SWITCH
ENABLE INPUT (EN)
CURRENT LIMIT
SUPPLY CURRENT
UNDERVOLTAGE LOCKOUT
OVERCURRENT (OC)
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