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Technical Specifications
Parameters and characteristics for this part
| Specification | LM5161PWPBKEVM |
|---|---|
| Board Type | Fully Populated |
| Current - Output | 1 A |
| Frequency - Switching | 300 kHz |
| Main Purpose | DC/DC, Step Down |
| Outputs and Type | Non-Isolated |
| Outputs and Type | 1 |
| Regulator Topology | Buck |
| Supplied Contents | Board(s) |
| Utilized IC / Part | LM5161-Q1 |
| Voltage - Input [Max] | 80 V |
| Voltage - Input [Min] | 15 V |
| Voltage - Output | 12 V |
LM5161-Q1 Series
Wide Input 4.5-V to 100-V, 1-A Synchronous Buck / Fly-Buck Converter
| Part | Outputs and Type | Outputs and Type | Utilized IC / Part | Regulator Topology | Board Type | Current - Output | Voltage - Input [Min] | Voltage - Input [Max] | Frequency - Switching | Main Purpose | Voltage - Output | Supplied Contents | Voltage - Input (Max) [Max] | Mounting Type | Synchronous Rectifier | Voltage - Input (Min) [Min] | Voltage - Output (Min/Fixed) [Min] | Qualification | Frequency - Switching [Min] | Frequency - Switching [Max] | Number of Outputs | Grade | Output Type | Function | Operating Temperature [Max] | Operating Temperature [Min] | Output Configuration | Package / Case | Package / Case [y] | Package / Case [x] | Voltage - Output (Max) | Supplier Device Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments | Non-Isolated | 1 | LM5161-Q1 | Buck | Fully Populated | 1 A | 15 V | 80 V | 300 kHz | DC/DC Step Down | 12 V | Board(s) | ||||||||||||||||||||
 Texas Instruments | Non-Isolated | 1 | LM5161-Q1 | Buck | Fully Populated | 800 mA | 36 V | 72 V | 300 kHz | DC/DC Step Down | 12 V | Board(s) | ||||||||||||||||||||
 Texas Instruments | 1 A | 100 V | Surface Mount | 4.5 V | 2 V | AEC-Q100 | 50 kHz | 1 MHz | 1 | Automotive | Adjustable | Step-Down | 150 °C | -40 °C | Isolation Capable Positive | 14-PowerTSSOP | 4.4 mm | 0.173 in | 92 V | 14-HTSSOP | ||||||||||||
 Texas Instruments | 1 A | 100 V | Surface Mount | 4.5 V | 2 V | 50 kHz | 1 MHz | 1 | Adjustable | Step-Down | 125 ¯C | -40 °C | Isolation Capable Positive | 14-PowerTSSOP | 4.4 mm | 0.173 in | 92 V | 14-HTSSOP |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Bulk | 1 | $ 58.80 | |
Description
General part information
LM5161-Q1 Series
The LM5161-Q1 is a 100-V, 1-A synchronous step-down converter with integrated high-side and low-side MOSFETs. The constant-ON-time control scheme requires no loop compensation and supports high step-down ratios with fast transient response. An internal feedback amplifier maintains ±1% output voltage regulation over the entire operating temperature range. The ON-time varies inversely with input voltage resulting in nearly constant switching frequency. Peak and valley current limit circuits protect against overload conditions. The under-voltage lockout (EN/UVLO) circuit provides independently adjustable input undervoltage threshold and hysteresis. The FPWM input pin in LM5161-Q1 selects either the forced continuous conduction mode (CCM) under all load levels or the discontinuous conduction mode (DCM) under light or no load conditions. When operating in forced CCM, the LM5161-Q1 supports the multiple output and isolated Fly-Buck applications. When programmed for the DCM operation, the LM5161-Q1 provides a tightly regulated buck output without any additional external feedback ripple injection circuit.
The LM5161-Q1 is a 100-V, 1-A synchronous step-down converter with integrated high-side and low-side MOSFETs. The constant-ON-time control scheme requires no loop compensation and supports high step-down ratios with fast transient response. An internal feedback amplifier maintains ±1% output voltage regulation over the entire operating temperature range. The ON-time varies inversely with input voltage resulting in nearly constant switching frequency. Peak and valley current limit circuits protect against overload conditions. The under-voltage lockout (EN/UVLO) circuit provides independently adjustable input undervoltage threshold and hysteresis. The FPWM input pin in LM5161-Q1 selects either the forced continuous conduction mode (CCM) under all load levels or the discontinuous conduction mode (DCM) under light or no load conditions. When operating in forced CCM, the LM5161-Q1 supports the multiple output and isolated Fly-Buck applications. When programmed for the DCM operation, the LM5161-Q1 provides a tightly regulated buck output without any additional external feedback ripple injection circuit.
Documents
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