LM3648YFFR
ActiveLM3648 SYNCHRONOUS BOOST LED FLASH DRIVER WITH 1.5-A HIGH-SIDE CURRENT SOURCE
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LM3648YFFR
ActiveLM3648 SYNCHRONOUS BOOST LED FLASH DRIVER WITH 1.5-A HIGH-SIDE CURRENT SOURCE
Technical Specifications
Parameters and characteristics for this part
| Specification | LM3648YFFR |
|---|---|
| Applications | Camera Flash |
| Current - Output / Channel | 1.5 A |
| Frequency | 4 MHz |
| Internal Switch(s) | True |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 12-UFBGA, DSBGA |
| Supplier Device Package | 12-DSBGA |
| Topology | Step-Up (Boost) |
| Type | DC DC Regulator |
| Voltage - Supply (Max) | 5.5 V |
| Voltage - Supply (Min) [Min] | 2.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tape & Reel (TR) | 3000 | $ 0.45 | |
| 6000 | $ 0.43 | |||
| 15000 | $ 0.41 | |||
| Texas Instruments | LARGE T&R | 1 | $ 0.79 | |
| 100 | $ 0.61 | |||
| 250 | $ 0.45 | |||
| 1000 | $ 0.32 | |||
Description
General part information
LM3648 Series
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.
Documents
Technical documentation and resources
