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SG Micro

SGM3726 Datasheet Preview

SGM3726 Datasheet

White LED Driver

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SGM3726
White LED Driver with PWM
Brightness Control in Small Packages
GENERAL DESCRIPTION
With a 40V rated integrated switch FET, the SGM3726
is a boost converter that drives up to 10 LEDs in series.
The boost converter runs at a 1.25MHz fixed switching
frequency with 1.1A switch current limit, and allows for
the use of a high brightness LED in general lighting.
The default white LED current is set with the external
sensor resistor RSET, and the feedback voltage is
regulated to 200mV, as shown in the typical application.
During the operation, the LED current can be controlled
using PWM signal through the CTRL pin, the pulse
width modulation (PWM) signal determines the
feedback reference voltage. In PWM mode, the
SGM3726 does not burst the LED current; therefore, it
does not generate audible noises on the output
capacitor. For maximum protection, the device features
integrated open LED protection that disables the
SGM3726 to prevent the output voltage from exceeding
the IC’s absolute maximum voltage ratings during open
LED conditions.
The SGM3726 is available in Green TDFN-2×2-6L and
TSOT-23-6 packages. It operates over an ambient
temperature range of -40to +85.
FEATURES
Input Voltage Range: 3V to 20V
38V Open LED Protection for 10 LEDs
200mV Reference Voltage
500kΩ Pull-Down Resistor on CTRL Pin
1.1A Switch FET with 1.25MHz Switching
Frequency
PWM Brightness Control
5kHz to 100kHz PWM Dimming Frequency Range
Soft-Start Function
Up to 90% Efficiency
-40to +85Operating Temperature Range
Available in Green TDFN-2×2-6L and TSOT-23-6
Packages
APPLICATIONS
High Brightness LED Lighting
White LED Backlighting for Media Form Factor Display
TYPICAL APPLICATION
Input
5V
CIN
22μF
Enable and PWM Dimming Control
CCOMP
47nF
L
10μH
VIN
SW
CTRL SGM3726 FB
COMP
GND
D1
C1
1μF
350mA
RSET
0.57Ω
Figure 1. Typical Application Circuit
SG Micro Corp
www.sg-micro.com
JULY 2016 – REV. B




SG Micro

SGM3726 Datasheet Preview

SGM3726 Datasheet

White LED Driver

No Preview Available !

SGM3726
White LED Driver with PWM
Brightness Control in Small Packages
PACKAGE/ORDERING INFORMATION
MODEL
SGM3726
PACKAGE
DESCRIPTION
TDFN-2×2-6L
TSOT-23-6
SPECIFIED
TEMPERATURE
RANGE
ORDERING
NUMBER
-40to +85SGM3726YTDI6G/TR-V1
-40to +85SGM3726YTN6G/TR-V1
PACKAGE
MARKING
3726
VXXX
SKBXX
PACKING
OPTION
Tape and Reel, 3000
Tape and Reel, 3000
NOTE: XX = Date Code. XXX = 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.
MARKING INFORMATION
3726
V X XX
Date code - Week (01, 02, 03)
Date code - Year ("A" = 2010, "B" = 2011 )
Device (SGM3726YTDI6G/TR-V1)
For example: 3726
VF21 (2015, 21st Week)
SKB X X
Date code - Month ("A" = Jan. "B" = Feb. "L" = Dec.)
Date code - Year ("A" = 2010, "B" = 2011 )
Chip I.D.
For example: SKBEA (2014, January)
ABSOLUTE MAXIMUM RATINGS
Supply Voltage on VIN....................................... -0.3V to 22V
Voltage on CTRL ................................................. -0.3V to 6V
Voltages on FB and COMP.................................. -0.3V to 3V
Voltage on SW ................................................... -0.3V to 40V
Package Thermal Resistance
TDFN-2×2-6L, θJA .................................................... 120/W
TSOT-23-6, θJA ........................................................ 190/W
Storage Temperature Range ........................ -65to +150
Junction Temperature.................................................+150
Operating Temperature Range ....................... -40to +85
Lead Temperature (Soldering 10 sec) ........................+260
ESD Susceptibility
HBM............................................................................. 4000V
MM................................................................................. 300V
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range ...............................................3V to 20V
Operating Temperature Range ....................... -40to +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.
SG Micro Corp
www.sg-micro.com
JULY 2016
2



Part Number SGM3726
Description White LED Driver
Maker SG Micro
Total Page 3 Pages
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SGM3726 Datasheet PDF





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