LM25115AMT/NOPB
Active42V, SECONDARY SIDE POST REGULATOR/SYNCHRONOUS BUCK CONTROLLER WITH POWER-UP/POWER-DOWN TRACKING
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LM25115AMT/NOPB
Active42V, SECONDARY SIDE POST REGULATOR/SYNCHRONOUS BUCK CONTROLLER WITH POWER-UP/POWER-DOWN TRACKING
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Technical Specifications
Parameters and characteristics for this part
| Specification | LM25115AMT/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-TSSOP |
| Package / Case [x] | 0.173 in |
| Package / Case [y] | 4.4 mm |
| Supplier Device Package | 16-TSSOP |
| Voltage - Input [Max] | 42 V |
| Voltage - Input [Min] | 0 V |
| Voltage - Supply [Max] | 30 VDC |
| Voltage - Supply [Min] | 4.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 460 | $ 2.14 | |
| Texas Instruments | TUBE | 1 | $ 2.58 | |
| 100 | $ 2.26 | |||
| 250 | $ 1.59 | |||
| 1000 | $ 1.28 | |||
Description
General part information
LM25115A Series
The LM25115A controller contains all of the features necessary to produce multiple tracking outputs using the Secondary Side Post Regulation (SSPR) technique. The SSPR technique develops a highly efficient and well regulated auxiliary output from the secondary side switching waveform of an isolated power converter. LM25115A can be also used as a standalone DC/DC synchronous buck controller (Refer to section). 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 LM25115A 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 LM25115A controller contains all of the features necessary to produce multiple tracking outputs using the Secondary Side Post Regulation (SSPR) technique. The SSPR technique develops a highly efficient and well regulated auxiliary output from the secondary side switching waveform of an isolated power converter. LM25115A can be also used as a standalone DC/DC synchronous buck controller (Refer to section). 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 LM25115A 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
