SGM2553/SGM2553D
Precision Adjustable Current
Limited Power Distribution Switches
SG Micro Corp
www.sg-micro.com
JUNE 2018 – RE V. A. 3
GENERAL DESCRIPTION
The SGM2553 and SGM2553D power distribution
switches are intended for applications where precision
current limiting is required or heavy capacitive loads
and short circuits are encountered and provide up to
1.5A of continuous load current. These devices offer a
programmable current limit threshold between 100mA
and 1.7A via an external resistor. The power switch rise
and fall times are controlled to minimize current surges
during turn on/off. The SGM2553D has quick auto-
discharge function in disable status.
SGM2553 and SGM2553D devices limit the output
current to a safe level by using a constant-current mode
when the output load exceeds the current limit
threshold. An internal reverse-voltage comparator
disables the power switch when the output voltage is
driven higher than the input to protect devices on the
input side of the switch. The
FAULT
output asserts low
during over-current, thermal shutdown and reverse-
voltage conditions.
SGM2553 and SGM2553D are available in the Green
TDFN-2×2-6L and SOT-23-6 packages. They are rated
over the -40℃ to +85℃ temperature range.
FEATURES
● Up to 1.5A Maximum Load Current
● Meets USB Current Limiting Requirements
● Adjustable Current Limit: 100mA to 1.7A
● Fast Over-Current Response: 2μs
● 90mΩ High-side MOSFET
● No Reverse Leakage Current of High-side MOSFET
● Reverse Input-Output Voltage Protection
● Operating Range: 2.5V to 5.5V
● Built-In Soft-Start Function
● Quick Auto-Discharge in Disable Status (SGM2553D)
● Evaluated to IEC 60950-1, Ed 2, Am1, Annex CC,
Test Program 1 with CB Report
● Available in the Green TDFN-2×2-6L and
SOT-23-6 Packages
APPLICATIONS
USB Ports/Hubs
Digital TV
Set-Top Boxes
VOIP Phones
TYPICAL APPLICATION
IN
EN
OUT
ILIM
GND
C
IN
0.1
µF
SGM
2553
5V USB
Input
Control Signal
FAULT
R
FAULT
100kΩ
USB Data
R
ILIM
68kΩ
FAULT Signal
USB
Port
1µF ~ 200µF
(120µF as Specified
for USB Standard
Downstream Port.)
Figure 1. Typical Application as USB Power Switch
SGM2553 Precision Adjustable Current
SGM2553D Limited Power Distribution Switches
2
JUNE 2018
SG Micro Corp
www.sg-micro.com
PACKAGE/ORDERING INFORMATION
MODEL
PACKAGE
DESCRIPTION
SPECIFIED
TEMPERATURE
RANGE
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
SGM2553
SOT-23-6
-40℃ to +85℃
SGM2553YN6G/TR SJ7XX Tape and Reel, 3000
TDFN-2×2-6L
-40℃ to +85℃
SGM2553YTDI6G/TR
2553
XXXX
Tape and Reel, 3000
SGM2553D
SOT-23-6
-40℃ to +85℃
SGM2553DYN6G/TR SJ8XX Tape and Reel, 3000
TDFN-2×2-6L
-40℃ to +85℃
SGM2553DYTDI6G/TR
SJ4
XXXX
Tape and Reel, 3000
MARKING INFORMATION
NOTE: XX = Date Code. XXXX = Date Code.
SOT
-23-6
T
DFN-2×2-6L
Date Code - Year
Date Code - Week
Serial Number
YYY X X
Date Code -
Week
Date Code - Year
X XX X
Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If
you have additional comments or questions, please contact your SGMICRO representative directly.
ABSOLUTE MAXIMUM RATINGS
VIN, VOUT, EN, ILIM and
FAULT
to GND ......... -0.3V to 6V
Continuous Output Current ......................... Internally Limited
Continuous
FAULT
Sink Current ................................ 25mA
ILIM Source Current ....................................................... 1mA
Package Thermal Resistance
TDFN-2×2-6L, θ
JA
.................................................... 160℃/W
SOT-23-6, θ
JA
.......................................................... 260℃/W
Junction Temperature ................................................. +150℃
Storage Temperature Range ......................... -65℃ to +150℃
Lead Temperature (Soldering, 10s) ............................ +260℃
ESD Susceptibility
HBM ............................................................................. 2000V
MM ................................................................................. 200V
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range ........................................... 2.5V to 5.5V
Enable Voltage Range ........................................... 0V to 5.5V
Continuous Output Current Range ........................ 0A to 1.5A
Current Limit Threshold Resistor Range ........ 20kΩ to 387kΩ
Continuous
FAULT
Sink Current Range .......... 0mA to 10mA
Minimum Input Decoupling Capacitance ...................... 0.1μF
Operating Temperature Range ...................... -40℃ to +85℃
OVERSTRESS CAUTION
Stresses beyond those listed may cause permanent damage
to the device. Functional operation of the device at these or
any other
conditions beyond those indicated in the operational
section
of the
specification
is not implied.
Exposure
to absolute
maximum rating conditions for extended periods may affect
reliability.
ESD SENSITIVITY CAUTION
This integrated circuit can be damaged by ESD if you don’t
pay attention to ESD protection. SGMICRO recommends that
all integrated circuits be handled with appropriate precautions.
Failure
to observe proper handling
and installation procedures
can cause damage. ESD damage can range from subtle
performance
degradation to
complete device failure. Precision
integrated circuits may be more susceptible to damage
because very small parametric changes could cause the
device not to meet its published specifications.
DISCLAIMER
SG Micro Corp reserves the right to make any change in
circuit
design, specification
or other related things if necessary
without notice at any time.