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SGM2551C Datasheet Preview

SGM2551C Datasheet

Power Distribution Switche

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SGM2551A/SGM2551C
Precision Adjustable Current
Limited Power Distribution Switches
GENERAL DESCRIPTION
The SGM2551A and SGM2551C 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 SGM2551C has quick auto-
discharge function in disable status.
SGM2551A and SGM2551C 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.
SGM2551A and SGM2551C are available in the Green
TDFN-2×2-6L and SOT-23-5 packages. They are rated
over the -40to +85temperature 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
(SGM2551C)
UL Recognized Component (UL File E481541)
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-23-5 Packages
APPLICATIONS
USB Ports/Hubs
Digital TV
Set-Top Boxes
VOIP Phones
TYPICAL APPLICATION
5V USB
Input
CIN
0.1µF
IN
OUT
USB Data
USB
Port
1µF ~ 200µF
(120µF as Specified
SGM2551A
for USB Standard
Downstream Port.)
Control Signal
EN
ILIM
GND
RILIM
68kΩ
Figure 1. Typical Application as USB Power Switch
SG Micro Corp
www.sg-micro.com
JUNE 2018 – REV. A. 3




SG Micro

SGM2551C Datasheet Preview

SGM2551C Datasheet

Power Distribution Switche

No Preview Available !

SGM2551A
SGM2551C
Precision Adjustable Current
Limited Power Distribution Switches
PACKAGE/ORDERING INFORMATION
MODEL
SGM2551A
PACKAGE
DESCRIPTION
SOT-23-5
TDFN-2×2-6L
SPECIFIED
TEMPERATURE
RANGE
-40to +85
ORDERING
NUMBER
SGM2551AYN5G/TR
-40to +85SGM2551AYTDI6G/TR
SGM2551C
SOT-23-5
TDFN-2×2-6L
-40to +85SGM2551CYN5G/TR
-40to +85SGM2551CYTDI6G/TR
PACKAGE
MARKING
SKEXX
SK5
XXXX
SLEXX
SL2
XXXX
PACKING
OPTION
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
MARKING INFORMATION
NOTE: XX = Date Code. XXXX = Date Code.
SOT-23-5
YYY X X
Date Code - Month
Date Code - Year
Serial Number
TDFN-2×2-6L
Y Y Y Serial Number
XXXX
Date Code - Week
Date Code - Year
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 and ILIM to GND ........................ -0.3V to 6V
Continuous Output Current ......................... Internally Limited
ILIM Source Current ....................................................... 1mA
Package Thermal Resistance
TDFN-2×2-6L, θJA .................................................... 160/W
SOT-23-5, θJA .......................................................... 250/W
Junction Temperature .................................................+150
Storage Temperature Range........................ -65to +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........ 20to 387
Minimum Input Decoupling Capacitance ...................... 0.1μF
Operating Temperature Range ...................... -40to +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.
SG Micro Corp
www.sg-micro.com
JUNE 2018
2



Part Number SGM2551C
Description Power Distribution Switche
Maker SG Micro
Total Page 3 Pages
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