SGM37892 is a single-channel LED flash driver, which includes a controlled constant current source with a maximum output of 720mA (SGM37892A supports up to 1240mA) and necessary protection and control circuits. SGM37892 is based on NMOSFET current control structure, with a new low forward voltage drop LED, it is not necessary to match the boost circuit to maintain constant current within the platform voltage range of lithium rechargeable batteries, which reduces system cost and avoids switching electromagnetic interference. Its internal constant current source structure allows the negative pole of the LED to be grounded, which is conducive to heat dissipation.
SGM37892 sets the output current according to the number of input pulses. The flash mode limits the maximum continuous output time through the flash timeout protection timer (650ms, typical value), thereby preventing the LED lamp from overheating. During this process, if a low pulse (50μs, typical value) appears on the ON pin, the internal timer of the chip is reset. When the power supply voltage is lower than 3.25V or the chip temperature is higher than 165℃, the SGM37892 automatically reduces the drive current proportionally until the power supply voltage is stable or the chip temperature drops.
The SGM37892 adopts UTDFN-1.5×2-6L and TSOT-23-6 green packages, and the rated operating temperature range is -40℃ to +85℃.
- Input supply voltage range: 2.7V to 5.5V
- Maximum flash drive current:
- 720mA (SGM37892)
- 1240mA (SGM37892A)
- Flash timeout protection time: 650ms (typical)
- Flexible reset of flash timeout protection timer to better support continuous shooting applications
- 6-level dimming (SGM37892), 8-level dimming (SGM37892A)
- The ratio of flash mode to flashlight mode drive current is about 4:1
- Collision avoidance monitoring
- Proportional reduction of flash drive current under low supply voltage and overtemperature conditions (100%, 66%, 33%, 0%)
- Green UTDFN-1.5×2-6L and TSOT-23-6 packages
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Part Number | Status | Package | Pins | Pd-Free | RoHS | REACH | Green | MSL Rating | Operating Temperature Range | Material Content | Reliability Report | Unit Resale Price* (Volume Range: in USD) | Lead Time** (Volume Range: Days) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGM37892AYTN6G/TR | Active | TSOT-23-6 | 6 | Yes | Yes | Yes | Yes | MSL3 | -40℃ to +85℃ | View | View | 1-24 units : $0.7/unit 25-99 units : $0.6/unit 100-249 units : $0.5/unit 250-499 units : $0.4/unit 500-999 units : $0.35/unit 1000-9999 units : $0.26/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 91 days | |
SGM37892AYUDT6G/TR | Active | UTDFN-1.5×2-6L | 6 | Yes | Yes | Yes | Yes | MSL1 | -40℃ to +85℃ | View | View | 1-24 units : $0.7/unit 25-99 units : $0.6/unit 100-249 units : $0.5/unit 250-499 units : $0.4/unit 500-999 units : $0.35/unit 1000-9999 units : $0.26/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 98 days | |
SGM37892YTN6G/TR | Active | TSOT-23-6 | 6 | Yes | Yes | Yes | Yes | MSL3 | -40℃ to +85℃ | View | View | 1-24 units : $0.7/unit 25-99 units : $0.6/unit 100-249 units : $0.5/unit 250-499 units : $0.4/unit 500-999 units : $0.35/unit 1000-9999 units : $0.26/unit | 3K-9K : 14 days 10K-99K : 28 days 100K-999K : 70 days 1000K and above : 112 days | |
SGM37892YUDT6G/TR | Active | UTDFN-1.5×2-6L | 6 | Yes | Yes | Yes | Yes | MSL1 | -40℃ to +85℃ | View | View | 1-24 units : $0.7/unit 25-99 units : $0.6/unit 100-249 units : $0.5/unit 250-499 units : $0.4/unit 500-999 units : $0.35/unit 1000-9999 units : $0.26/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 98 days |
* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.
** The lead time provided is for reference purposes only and is subject to change based on different circumstances.
