0
ACTIVE
Input voltage type |
DC/DC |
Topology |
Boost, current mode |
Vin (min) (V) |
2.5 |
Vin (max) (V) |
5.5 |
Vout (max) (V) |
5.5 |
Vout (min) (V) |
2.5 |
Iout (max) (A) |
1.5 |
Iq (typ) (mA) |
0.3 |
Features |
I2C control, IR Mode, LED Thermal Monitor, OVP, Over Current Protection, Synchronous Rectification |
Operating temperature range (°C) |
-40 to 85 |
Dimming method |
Analog, PWM |
Number of channels |
1 |
Rating |
Catalog |
DSBGA (YFF)-12-2.52000000000000018 mm² 1.4000000000000001 x 1.8
The LM3648 is an LED flash driver that provides a high level of adjustability within a small solution size. The LM3648 utilizes a 2-MHz or 4-MHz fixed-frequency synchronous boost converter to provide power to the 1.5-A constant current LED source. An adaptive regulation method ensures the current source remains in regulation and maximizes efficiency.
Features of the LM3648 are controlled via an I2C-compatible interface. These features include: hardware flash and hardware torch pins (STROBE and TORCH/TEMP), a TX interrupt, and an NTC thermistor monitor. The device offers 64 programmable currents in Flash and 128 levels in Movie Mode (Torch) condition.
The 2-MHz or 4-MHz switching frequency options, overvoltage protection (OVP), and adjustable current limit allow for the use of tiny, low-profile inductors and (10-µF) ceramic capacitors. The device operates over a –40°C to +85°C ambient temperature range.
For all available packages, see the orderable addendum at the end of the data sheet.WELL LINK CHIPS GROUP CO.,LIMITED FLAT/RM 1802 BEVERLY HOUSE 93-107 LOCKHART ROAD WANCHAI HK
