38V High Efficiency, Boost White LED Driver with PWM Dimming Control
With a 40V rated integrated switch FET, the SGM3733B is a boost converter that drives LEDs in series. The boost converter runs at 650kHz fixed switching frequency to reduce output ripple, improve conversion efficiency, and allows for the use of small external components.
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 duty cycle of pulse width modulation (PWM) signal determines the feedback reference voltage. In PWM mode, the SGM3733B 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 SGM3733B to prevent the output voltage from exceeding the IC’s absolute maximum voltage ratings during open LED conditions.
The SGM3733B is available in Green TDFN-2×2-6L and TSOT-23-6 packages. It operates over an ambient temperature range of -40℃ to +85℃.
Input Voltage Range: 2.7V to 20V
38V Open LED Protection
200mV Reference Voltage
500kΩ Pull-Down Resistor on CTRL Pin
PWM Brightness Control
5kHz to 100kHz PWM Dimming Frequency Range
Soft-Start Function
Up to 90% Efficiency
-40℃ to +85℃ Operating Temperature Range
Available in Green TDFN-2×2-6L and TSOT-23-6 Packages
Cellular Phones
Portable Media Players
Ultra Mobile Devices
GPS Receivers
White LED Backlighting for Media Form Factor Display
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) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGM3733BYTDI6G/TR | 新規設計に推奨しません | TDFN-2×2-6L | 6 | Yes | Yes | Yes | Yes | MSL1 | -40℃ to +85℃ | 閲覧 | 閲覧 | 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 | |
SGM3733BYTN6G/TR | 新規設計に推奨しません | TSOT-23-6 | 6 | Yes | Yes | Yes | Yes | -40℃ to +85℃ | 閲覧 | 閲覧 |
* 再販価格は參考価格です。正式な見積もりについては、代理店にお問い合わせください。
** 提供されるリードタイムは參考情報であり、異なる狀況に応じて変更される可能性があります。
