LP87745101RXVRQ1
ActiveAUTOMOTIVE THREE 3-A LOW-NOISE BUCK CONVERTER, IO LDO & 5-V BOOST CONVERTER PMIC FOR RADAR MMICS
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LP87745101RXVRQ1
ActiveAUTOMOTIVE THREE 3-A LOW-NOISE BUCK CONVERTER, IO LDO & 5-V BOOST CONVERTER PMIC FOR RADAR MMICS
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Technical Specifications
Parameters and characteristics for this part
| Specification | LP87745101RXVRQ1 |
|---|---|
| Frequency - Switching | 8.8 MHz, 17.6 MHz, 4.4 MHz |
| Grade | Automotive |
| Mounting Type | Wettable Flank, Surface Mount |
| Number of Outputs | 5 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 28-PowerVFQFN |
| Qualification | AEC-Q100 |
| Supplier Device Package | 28-VQFN-HR |
| Supplier Device Package [x] | 4.5 |
| Supplier Device Package [y] | 5 |
| Topology | Step-Up (Boost) (1), Linear (LDO) (1), Step-Down (Buck) (3) |
| Voltage - Supply [Max] | 4 V |
| Voltage - Supply [Min] | 3 V |
| Voltage/Current - Output 1 | 3 A |
| Voltage/Current - Output 1 [Max] | 1.9 V |
| Voltage/Current - Output 1 [Min] | 0.9 V |
| Voltage/Current - Output 2 | 3 A |
| Voltage/Current - Output 2 [Max] | 1.9 V |
| Voltage/Current - Output 2 [Min] | 0.9 V |
| Voltage/Current - Output 3 | 3 A |
| Voltage/Current - Output 3 [Max] | 1.9 V |
| Voltage/Current - Output 3 [Min] | 0.9 V |
| w/LED Driver | False |
| w/Sequencer | False |
| w/Supervisor | False |
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 | $ 5.33 | |
| 10 | $ 4.78 | |||
| 25 | $ 4.52 | |||
| 100 | $ 3.92 | |||
| 250 | $ 3.72 | |||
| 500 | $ 3.34 | |||
| 1000 | $ 2.81 | |||
| Digi-Reel® | 1 | $ 5.33 | ||
| 10 | $ 4.78 | |||
| 25 | $ 4.52 | |||
| 100 | $ 3.92 | |||
| 250 | $ 3.72 | |||
| 500 | $ 3.34 | |||
| 1000 | $ 2.81 | |||
| Tape & Reel (TR) | 3000 | $ 2.67 | ||
| Texas Instruments | LARGE T&R | 1 | $ 4.02 | |
| 100 | $ 3.52 | |||
| 250 | $ 2.47 | |||
| 1000 | $ 1.99 | |||
Description
General part information
LP87745-Q1 Series
The LP8774x-Q1 device is designed to meet the power management requirements of the AWR and IWR MMICs in various automotive and industrial radar applications. The device has three step-down DC/DC converters, a 5V boost converter and a 1.8V or 3.3V LDO. The LDO is powered from the boost and intended for xWR I/O supply. An SPI serial interface and enable signals control the device.
The step-down DC/DC converters support programmable switching frequency of 4.4MHz, 8.8MHz, or 17.6MHz. High switching frequency and low noise across wide frequency range enable LDO-free power solution with minimal or no passive filtering. The high switching frequency improves thermals and transient settling for the MMIC RF rails. The device forces the switching clock into PWM mode for optimal RF performance and can also be synchronized to an external clock. The device supports remote voltage sensing to compensate IR drop between the regulator output and the point-of-load (POL) which improves the accuracy of the output voltage.
The LP8774x-Q1 device supports programmable start-up and shutdown delays and sequences which are synchronized to the ENABLE signal. The sequences can also include GPO signals to control external regulators, load switches, and processor reset. The default settings for the device are programmed into nonvolatile memory (NVM). The device controls the output slew rate to minimize output voltage overshoot and in-rush current during device start-up.
Documents
Technical documentation and resources