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Overview
| Topology | Flyback Converter |
| Input voltage | 3-24 V |
| Switching frequency | 100-300 kHz |
Description
The LT®3750A is a flyback converter designed to rapidly charge large capacitors to a user-adjustable target voltage. A patented boundary mode control scheme minimizes transition losses and reduces transformer size. The transformer turns ratio and two external resistors easily adjust the output voltage. A low 78mV current sense accurately limits peak switch current and also helps to maximize efficiency. With a wide input voltage range, the LT3750A can operate from a variety of power sources. A typical application can charge a 100μF capacitor to 300V in less than 300ms.The CHARGE pin gives full control of the LT3750A to the user. The DONE pin indicates when the capacitor has reached its programmed value and the part has stopped charging.
Features
- Charges Any Size Capacitor
- Easily Adjustable Output Voltage
- Drives High Current NMOS FETs
- Primary-Side Sense—No Output Voltage DividerNecessary
- Wide Input Range: 3V to 24V
- Drives Gate to VCC – 2V
- Available in 10-Lead MS Package
Typical applications
- Professional Photoflash Systems, Security/Inventory Control Systems, Emergency Warning Beacons
- High Voltage Power Supply
More information
Products
| Order Code | Datasheet | Downloads | Status | Product series | VIN | VOut1 (V) | IOut1 (mA) | L (µH) | n | ISAT (A) | LS (µH) | VT (V (AC)) | Size | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 750032051 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WE-FB 3751 Flyback Transformer for LT3751 | 3 - 24 V (DC) | 300 | 150 | 10 | 1:10 | 5 | 0.05 | 1000 | EFD20 | |
| 750032052 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WE-FB 3751 Flyback Transformer for LT3751 | 3 - 24 V (DC) | 300 | 150 | 10 | 1:10 | 10 | 0.3 | 1000 | EFD20 | |
| 750032050 | SPEC | – | Active i| Production is active. Expected lifetime: >10 years. | Flyback Transformer | – | – | – | – | – | – | – | – | – |
| Order Code | Datasheet | |
|---|---|---|
| 750032051 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. |
| 750032052 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. |
| 750032050 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Downloads | Status | Product series | VIN | VOut1 (V) | IOut1 (mA) | L (µH) | n | ISAT (A) | LS (µH) | VT (V (AC)) | Size | Samples |
|---|