L5991D
IC OFFLINE SWITCH MULT TOP 16SO
Pmic Ac Dc Converters Offline Switchers
16-SOIC (0.154", 3.90mm Width)
Active
$2.80 / unit (market reference)
MOQ: 1 pcs
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Parameters
| Parameter | Value |
|---|---|
| Brand | STMicroelectronics |
| Model | L5991D |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Topology | Boost, Flyback |
| Frequency - Switching | Up to 1MHz |
| Supplier Device Package | 16-SO |
| RoHS | RoHS |
| Part Status | Active |
Application & Notes
L5991D by STMicroelectronics is a Boost, Flyback IC commonly used in power supply designs, battery-powered devices, and DC-DC conversion modules. Input voltage up to N/A, output adjustable. The 16-SOIC (0.154", 3.90mm Width) package with surface mount mounting is standard for compact designs. Pay attention to input/output capacitor selection and PCB layout — switching regulators are sensitive to trace inductance.
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All Technical Specifications
| Topology | Boost, Flyback |
| Duty Cycle | 93% |
| Control Features | Frequency Control, Soft Start, Sync |
| Fault Protection | Current Limiting, Over Voltage |
| Output Isolation | Isolated |
| Internal Switch(s) | No |
| Voltage - Start Up | 15 V |
| Frequency - Switching | Up to 1MHz |
| Voltage - Supply (Vcc/Vdd) | 10V ~ 20V |
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