LM5115SDX/NOPB
Active75V, SECONDARY SIDE POST REGULATOR/ SYNCHRONOUS BUCK CONTROLLER
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LM5115SDX/NOPB
Active75V, SECONDARY SIDE POST REGULATOR/ SYNCHRONOUS BUCK CONTROLLER
Technical Specifications
Parameters and characteristics for this part
| Specification | LM5115SDX/NOPB |
|---|---|
| Applications | Secondary-Side Controller |
| Current - Supply | 4 mA |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 16-WFDFN Exposed Pad |
| Supplier Device Package | 16-WSON (5x5) |
| Voltage - Input [Max] | 30 V |
| Voltage - Input [Min] | 5 V |
| Voltage - Supply [Max] | 7.5 V |
| Voltage - Supply [Min] | 5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 4.27 | |
| Digi-Reel® | 1 | $ 4.27 | ||
| Tape & Reel (TR) | 4500 | $ 2.14 | ||
| Texas Instruments | LARGE T&R | 1 | $ 3.22 | |
| 100 | $ 2.82 | |||
| 250 | $ 1.98 | |||
| 1000 | $ 1.59 | |||
Description
General part information
LM5115A Series
The LM5115 is a versatile switching regulator controller. It has two main application configurations. The first is utilizing the Secondary Side Post Regulation (SSPR) technique to implement multiple output power converters. In the second configuration, it can be used as a standalone synchronous buck controller (Please see for more details). The SSPR technique develops a highly efficient and well regulated auxiliary output from the secondary side switching waveform of an isolated power converter. Regulation of the auxiliary output voltage is achieved by leading edge pulse width modulation (PWM) of the main channel duty cycle. Leading edge modulation is compatible with either current mode or voltage mode control of the main output. The LM5115 drives external high side and low side NMOS power switches configured as a synchronous buck regulator. A current sense amplifier provides overload protection and operates over a wide common mode input range. Additional features include a low dropout (LDO) bias regulator, error amplifier, precision reference, adaptive dead time control of the gate signals and thermal shutdown.
The LM5115 is a versatile switching regulator controller. It has two main application configurations. The first is utilizing the Secondary Side Post Regulation (SSPR) technique to implement multiple output power converters. In the second configuration, it can be used as a standalone synchronous buck controller (Please see for more details). The SSPR technique develops a highly efficient and well regulated auxiliary output from the secondary side switching waveform of an isolated power converter. Regulation of the auxiliary output voltage is achieved by leading edge pulse width modulation (PWM) of the main channel duty cycle. Leading edge modulation is compatible with either current mode or voltage mode control of the main output. The LM5115 drives external high side and low side NMOS power switches configured as a synchronous buck regulator. A current sense amplifier provides overload protection and operates over a wide common mode input range. Additional features include a low dropout (LDO) bias regulator, error amplifier, precision reference, adaptive dead time control of the gate signals and thermal shutdown.
Documents
Technical documentation and resources
