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Shengbang Microelectronics

SGM3780 Datasheet Preview

SGM3780 Datasheet

1.5A Flash LED Driver

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SGM3780
2MHz, 1.5A Flash LED Driver
in TDFN-3×2-14L Package
GENERAL DESCRIPTION
The SGM3780 is the ideal power solution for
high-power flash LEDs used with cell phone camera
modules or digital still cameras. It is a highly integrated
step-up DC/DC converter with very high switching
frequency, fixed at 2MHz, providing a very small total
solution for portable photo flash. The SGM3780 has
separate Flash mode and Movie/Torch mode enable
pins for maximum flexibility. Flash mode is usually used
with 660ms timer control to generate a high intensity
flash. The Flash mode and Movie/Torch mode LED
current is programmed by external resistors
respectively, making the flash LED solution simple to
control. If both enable pins are at logic high, the LED
current will be programmed by the Movie/Torch mode
setting resistor.
The two LED output sinks can be shorted together
externally for higher power single flash LEDs, up to
1.5A continuous LED current. Thermal regulation is
integrated in Flash mode to limit the IC’s temperature
and continuously provide the maximum allowed output
current.
Various protection features are built into the SGM3780,
including cycle-by-cycle input current limit protection,
output over-voltage protection, LED fault (open or short)
protection and thermal shutdown protection. The
leakage current in shutdown is less than 1μA.
FEATURES
Input Voltage Range: 3V to 5V
Dual Flash LED Outputs
Drive Up to Total 1.5A or 0.75A per Channel
High Efficiency LED Driver (Up to 90%)
2MHz Step-Up Converter
Very Small Inductor: 1.0μH
Independent Flash Mode Enable and Movie/Torch
Mode Enable Pins
Movie/Torch Mode Dimming via PWM Control
One Resistor Sets Flash Mode LED Current
One Resistor Sets Movie/Torch Mode LED Current
Integrated Thermal Regulation Control
660ms Flash Timer Control
330kΩ Pull-Down Resistor on ENM or ENF Pin
LED Open or Short Protection
Output Over-Voltage Protection
Cycle-by-Cycle Inductor Current Limit
Less than 1μA Shutdown Current
Available in Green TDFN-3×2-14L Package
Temperature Range: -40to +85
APPLICATIONS
Portable Equipments
The SGM3780 is available in Green TDFN-3×2-14L
package. It operates over an ambient temperature
range of -40to +85.
SG Micro Corp
www.sg-micro.com
REV. A




Shengbang Microelectronics

SGM3780 Datasheet Preview

SGM3780 Datasheet

1.5A Flash LED Driver

No Preview Available !

SGM3780
2MHz, 1.5A Flash LED Driver
in TDFN-3×2-14L Package
PACKAGE/ORDERING INFORMATION
MODEL
SGM3780
ORDER NUMBER
SGM3780YTDP14G/TR
PACKAGE
DESCRIPTION
TDFN-3×2-14L
SPECIFIED
TEMPERATURE
RANGE
-40to +85
MARKING
INFORMATION
3780DP
XXXXX
PACKAGE
OPTION
Tape and Reel, 3000
NOTE: XXXXX = Date Code and Vendor Code.
ABSOLUTE MAXIMUM RATINGS
VIN, VOUT, D1 and D2 Voltages............................. -0.3V to 6V
ENF, ENM, RSETF, RSETM ........................-0.3V to VIN + 0.3V
SW Voltage............................................................ -0.3V to 6.5V
Storage Temperature Range..............................-65to +150
Junction Temperature........................................................150
Operating Temperature Range............................-40to +85
Lead Temperature (Soldering 10 sec)
..........................................................................................260
ESD Susceptibility
HBM..................................................................................2000V
MM......................................................................................200V
NOTE:
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.
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.
SGMICRO reserves the right to make any change in circuit
design, specification or other related things if necessary without
notice at any time. Please contact SGMICRO sales office to get
the latest datasheet.
SG Micro Corp
www.sg-micro.com
2


Part Number SGM3780
Description 1.5A Flash LED Driver
Maker Shengbang Microelectronics
Total Page 16 Pages
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