


Note: The purchased components are stored in your JLCPCB parts library for future PCBA orders only, and cannot be shipped separately.
| Attributes | Value | |
|---|---|---|
| Category | Power Management (PMIC)/AC-DC Controllers and Regulators | |
| Manufacturer | STMicroelectronics | |
| Package | SOIC-16 | |
| Operating Temperature | -40℃~+150℃ | |
| Frequency - Switching | 1MHz | |
| Voltage - Supply | 7.6V~20V | |
| Output Current | 1.5A | |
| Duty Cycle(Max) | 93% | |
| Feedback System | Secondary-Side Feedback | |
| Working Mode | PWM Modulation | |
| Isolation | Isolation | |
| Features | Under Voltage Protection、Over Current Protection、Soft-start | |
| Topology | Flyback | |
| Pd - Power Dissipation | 0.83W |

* Images are for reference only
Note: The purchased components are stored in your JLCPCB parts library for future PCBA orders only, and cannot be shipped separately.

* Images are for reference only
Note: The purchased components are stored in your JLCPCB parts library for future PCBA orders only, and cannot be shipped separately.
L5991AD technical specifications, attributes, and parameters.
| Attributes | Value | |
|---|---|---|
| Category | Power Management (PMIC)/AC-DC Controllers and Regulators | |
| Manufacturer | STMicroelectronics | |
| Package | SOIC-16 | |
| Operating Temperature | -40℃~+150℃ | |
| Frequency - Switching | 1MHz | |
| Voltage - Supply | 7.6V~20V | |
| Output Current | 1.5A | |
| Duty Cycle(Max) | 93% | |
| Feedback System | Secondary-Side Feedback | |
| Working Mode | PWM Modulation | |
| Isolation | Isolation | |
| Features | Under Voltage Protection、Over Current Protection、Soft-start | |
| Topology | Flyback | |
| Pd - Power Dissipation | 0.83W |
From components to fully assembled PCBs. JLCPCB supports PCB assembly for the L5991AD. Sign up to receive and start your assembly today →
Step 1 - Pre-order the parts you need from JLCPCB.
Step 2 - Place a PCBA order to have those parts assembled onto your boards.
Step 3 - JLCPCB manufactures and assembles your boards in as fast as 3 days.

L5991AD datasheets or manufacturer documentation.
Datasheet: L5991AD Datasheet (PDF)
The L5991AD schematic symbol and PCB footprint are available in the EasyEDA PCB design tool.