LM5166DRCT
Active3V-65V INPUT, 500MA SYNCHRONOUS BUCK CONVERTER WITH ULTRA-LOW IQ
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LM5166DRCT
Active3V-65V INPUT, 500MA SYNCHRONOUS BUCK CONVERTER WITH ULTRA-LOW IQ
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Technical Specifications
Parameters and characteristics for this part
| Specification | LM5166DRCT |
|---|---|
| Current - Output | 500 mA |
| Frequency - Switching [Max] | 600 kHz |
| Frequency - Switching [Min] | 50 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 10-VFDFN Exposed Pad |
| Supplier Device Package | 10-VSON (3x3) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 65 V |
| Voltage - Input (Min) [Min] | 3 V |
| Voltage - Output (Max) [Max] | 65 V |
| Voltage - Output (Min/Fixed) | 1.23 V |
LM5166 Series
3V-65V Input, 500mA Synchronous Buck Converter With Ultra-Low Iq
| Part | Main Purpose | Board Type | Current - Output | Frequency - Switching | Voltage - Input [Min] | Voltage - Input [Max] | Voltage - Output | Regulator Topology | Utilized IC / Part | Supplied Contents | Outputs and Type | Outputs and Type | Voltage - Output (Min/Fixed) | Function | Output Type | Voltage - Input (Max) [Max] | Voltage - Output (Max) [Max] | Package / Case | Synchronous Rectifier | Number of Outputs | Frequency - Switching [Max] | Frequency - Switching [Min] | Voltage - Input (Min) [Min] | Operating Temperature [Max] | Operating Temperature [Min] | Topology | Output Configuration | Supplier Device Package | Mounting Type | Output Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Texas Instruments | DC/DC Step Down | Fully Populated | 500 mA | 200 kHz | 4.5 V | 65 V | 3.3 V | Buck | LM5166 | Board(s) | Non-Isolated | 1 | ||||||||||||||||||
Texas Instruments | 500 mA | 1.23 V | Step-Down | Adjustable | 65 V | 65 V | 10-VFDFN Exposed Pad | 1 | 600 kHz | 50 kHz | 3 V | 150 °C | -40 °C | Buck | Positive | 10-VSON (3x3) | Surface Mount | |||||||||||||
Texas Instruments | DC/DC Step Down | Fully Populated | 500 mA | 100 kHz | 6 V | 65 V | 5 V | Buck | LM5166 | Board(s) | Non-Isolated | 1 | ||||||||||||||||||
Texas Instruments | 500 mA | 5 V | Step-Down | 65 V | 10-VFDFN Exposed Pad | 1 | 600 kHz | 50 kHz | 3 V | 150 °C | -40 °C | Buck | Positive | 10-VSON (3x3) | Surface Mount | 1.81 mOhm |
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 | $ 4.49 | |
| 10 | $ 4.03 | |||
| 25 | $ 3.81 | |||
| 100 | $ 3.30 | |||
| Digi-Reel® | 1 | $ 4.49 | ||
| 10 | $ 4.03 | |||
| 25 | $ 3.81 | |||
| 100 | $ 3.30 | |||
| Tape & Reel (TR) | 250 | $ 2.20 | ||
| 500 | $ 2.10 | |||
| Texas Instruments | SMALL T&R | 1 | $ 3.39 | |
| 100 | $ 2.97 | |||
| 250 | $ 2.08 | |||
| 1000 | $ 1.68 | |||
Description
General part information
LM5166 Series
TheLM5166is a compact, easy-to-use, 3-V to 65-V, ultra-low IQsynchronous buck converter with high efficiency over wide input voltage and load current ranges. With integrated high-side and low-side power MOSFETs, up to 500 mA of output current can be delivered at fixed output voltages of 3.3 V or 5 V, or an adjustable output. The converter is designed to simplify implementation while providing options to optimize the performance for the target application. Pulse frequency modulation (PFM) mode is selected for optimal light-load efficiency or constant on-time (COT) control for nearly constant operating frequency. Both control schemes do not require loop compensation while providing excellent line and load transient response and short PWM on-time for large step-down conversion ratios.
The high-side P-channel MOSFET can operate at 100% duty cycle for lowest dropout voltage and does not require a bootstrap capacitor for gate drive. Also, the current limit setpoint is adjustable to optimize inductor selection for a particular load current requirement. Selectable and adjustable start-up timing options include minimum delay (no soft start), internally fixed (900 µs), and externally programmable soft start using a capacitor. An open-drain PGOOD indicator can be used for sequencing, fault reporting, and output voltage monitoring. The LM5166 is available in a 10-pin VSON package with 0.5-mm pin pitch.
TheLM5166is a compact, easy-to-use, 3-V to 65-V, ultra-low IQsynchronous buck converter with high efficiency over wide input voltage and load current ranges. With integrated high-side and low-side power MOSFETs, up to 500 mA of output current can be delivered at fixed output voltages of 3.3 V or 5 V, or an adjustable output. The converter is designed to simplify implementation while providing options to optimize the performance for the target application. Pulse frequency modulation (PFM) mode is selected for optimal light-load efficiency or constant on-time (COT) control for nearly constant operating frequency. Both control schemes do not require loop compensation while providing excellent line and load transient response and short PWM on-time for large step-down conversion ratios.
Documents
Technical documentation and resources