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Overview
| Topology | Push-Pull Converter symmetrical isolated |
| Input voltage | 2.5-5.5 V |
| Switching frequency | 300-550 kHz |
| Output 1 | 5 V / 0.1 A |
Description
The IS801 is a monolithic oscillator/power driver designed for isolated interface applications Designed for small size,isolated power supplies. IS801 can drive 3.3V or a low-profile center-tapped transformer primary in a 5V DC supply, while the secondary can The number of turns can be determined according to the required output isolation voltage.The IS801 provides complementary output signals to drive ground-referenced N-channel source switch. In addition to the internal break-before-make logic between the two switches, IS801 also integrates VCC under-voltage protection and thermal shutdown protection. Added spread spectrum. The clock helps pass system EMI tests. IS801adopts small SOT23-5 packages, specified operating temperature range -40°C to 125°C.
Features
- Push-pull driver for driving small transformers
- Single 3.3V or 5V supply
- High Primary-Side Current Drive:
- 5V supply: 500mA (maximum)
- 3.3V Supply: 500mA (Max)
- Low ripple on rectified output allows use of small output capacitors
- VCC brown-out detection
- Spread spectrum clocking optimized for EMI
- Thermal Shutdown Protection
- Small SOT23-5 package
Typical applications
- CAN, RS-485, RS-422, RS-232, SPI, I2C, low power Isolated interface power for LAN consumption
- Medical equipment
- Process control, Industrial automation systems
More information
Products
Order Code | Datasheet | Downloads | Status | Product series | VIN | VOut1(V (DC)) | IOut1(A) | Type of Insulation | fswitch(kHz) | ∫Udt(Vµs) | NPRI : NSEC | L(µH) | VT(V (AC)) | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PPTI Push-Pull Transformers, 3.3 V (DC), 5 V (DC) | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PPTI Push-Pull Transformers | Input Voltage 3.3 V (DC) | Output Voltage 15 V (DC) | Output Current 10.5 A | Type of InsulationFunctional | Switching Frequency 250 - 550 | Voltage-µSecond11 Vµs | Turns Ratio1:1.7 | Inductance475 µH | Insulation Test Voltage2500 V (AC) | Length6.73 mm | Width10.2 mm | Height4.19 mm | MountSMT | |||
| 760390011 | WE-PPTI Push-Pull Transformer, 3.3 V (DC), 3.3 V (DC) | Status Activei| Production is active. Expected lifetime: >10 years. | Product series WE-PPTI Push-Pull Transformer | Input Voltage 3.3 V (DC) | Output Voltage 13.3 V (DC) | Output Current 10.1 A | Type of InsulationFunctional | Switching Frequency 250 - 550 | Voltage-µSecond7 Vµs | – | Inductance1000 µH | Insulation Test Voltage1500 V (AC) | Length6.73 mm | Width10.2 mm | Height4.19 mm | MountSMT | ||
| WE-PPTI Push-Pull Transformers, 5 V (DC), 5 V (DC) | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PPTI Push-Pull Transformers | Input Voltage 5 V (DC) | Output Voltage 15 V (DC) | Output Current 10.75 A | Type of InsulationFunctional | Switching Frequency 300 - 620 | Voltage-µSecond11 Vµs | Turns Ratio1:1.1 | Inductance475 µH | Insulation Test Voltage2500 V (AC) | Length6.73 mm | Width10.2 mm | Height4.19 mm | MountSMT |