SGM2553E
Precision Adjustable Current
Limited Power Distribution Switch
SG Micro Corp
www.sg-micro.com
APRIL 2018 – REV. A
GENERAL DESCRIPTION
The SGM2553E power distribution switch is intended
for applications where precision current limiting is
required or heavy capacitive loads and short circuits
are encountered and provides up to 0.2A of continuous
load current. This device offers a programmable current
limit threshold between 100mA and 200mA via an
external resistor. The power switch rise and fall times
are controlled to minimize current surges during turn
on/off. The SGM2553E has quick auto-discharge
function in disable status.
SGM2553E device limits 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 device on the input side of the switch. The
nFAULT output asserts low during over-current, thermal
shutdown and reverse-voltage conditions.
SGM2553E is available in the Green TDFN-2×2-6L
package. It is rated over the -40℃ to +85℃ temperature
range.
FEATURES
● Up to 0.2A Maximum Load Current
● Meets USB Current Limiting Requirements
● Adjustable Current Limit: 100mA to 200mA
● 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
● Evaluated to IEC 60950-1, Ed 2, Am1, Annex CC,
Test Program 1 with CB Report
● Available in the Green TDFN-2×2-6L Package
APPLICATIONS
USB Ports/Hubs
Digital TV
Set-Top Boxes
VOIP Phones
TYPICAL APPLICATION
IN
EN
OUT
ILIM
GND
C
IN
0.1µF
SGM2553E
5V USB
Input
Control Signal
nFAULT
R
nFAULT
100kΩ
USB Data
R
ILIM
260kΩ
nFAULT Signal
USB
Port
1µF ~ 200µF
(120µF as Specified
for USB Standard
Downstream Port.)
Figure 1. Typical Application as USB Power Switch
Precision Adjustable Current
SGM2553E Limited Power Distribution Switch
2
APRIL 2018
SG Micro Corp
www.sg-micro.com
PACKAGE/ORDERING INFORMATION
MODEL
PACKAGE
DESCRIPTION
SPECIFIED
TEMPERATURE
RANGE
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
SGM2553E TDFN-2×2-6L
-40℃ to +85℃
SGM2553EYTDI6G/TR
SJ6
XXXX
Tape and Reel, 3000
MARKING INFORMATION
NOTE: XXXX = Date Code.
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 nFAULT to GND .......... -0.3V to 6V
Continuous Output Current ......................... Internally Limited
Continuous nFAULT Sink Current ................................. 25mA
ILIM Source Current ....................................................... 1mA
Package Thermal Resistance
TDFN-2×2-6L, θ
JA
.................................................... 160℃/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 0.2A
Current Limit Threshold Resistor Range ...... 200kΩ to 390kΩ
Continuous nFAULT Sink Current Range ......... 0mA to 10mA
Minimum Input Decoupling Capacitance ...................... 0.1μF
Operating Temperature Range ...................... -40℃ to +85℃
OVERSTRESS CAUTION
Stresses beyond those listed in Absolute Maximum Ratings
may cause permanent damage to the device. Exposure
to
absolute maximum rating conditions for extended periods
may affect reliability. Functional operation of the device at any
conditions beyond those indicated in the Recommended
Operating Conditions section
is not implied.
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, or specifications
without prior notice.