L7987LTR
ActiveDC-DC SWITCHING (STEP DOWN) REGULATOR, ADJUSTABLE, 1.5MHZ, 4.5V-61VIN, 0.8V-61V/2A OUT, HTSSOP-16
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L7987LTR
ActiveDC-DC SWITCHING (STEP DOWN) REGULATOR, ADJUSTABLE, 1.5MHZ, 4.5V-61VIN, 0.8V-61V/2A OUT, HTSSOP-16
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Technical Specifications
Parameters and characteristics for this part
| Specification | L7987LTR |
|---|---|
| Current - Output | 2 A |
| Frequency - Switching [Max] | 1.5 MHz |
| Frequency - Switching [Min] | 250 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 | Exposed Pad, 16-TSSOP |
| Package / Case [custom] | 0.173 " |
| Package / Case [custom] | 4.4 mm |
| Supplier Device Package | 16-HTSSOP |
| Synchronous Rectifier | False |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 61 V |
| Voltage - Input (Min) [Min] | 4.5 V |
| Voltage - Output (Max) | 61 V |
| Voltage - Output (Min/Fixed) | 0.8 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 | $ 2.77 | |
| 10 | $ 2.49 | |||
| 25 | $ 2.36 | |||
| 100 | $ 2.04 | |||
| 250 | $ 1.94 | |||
| 500 | $ 1.74 | |||
| 1000 | $ 1.47 | |||
| Digi-Reel« | 1 | $ 2.77 | ||
| 10 | $ 2.49 | |||
| 25 | $ 2.36 | |||
| 100 | $ 2.04 | |||
| 250 | $ 1.94 | |||
| 500 | $ 1.74 | |||
| 1000 | $ 1.47 | |||
| Tape & Reel (TR) | 2500 | $ 1.39 | ||
| 5000 | $ 1.34 | |||
| Newark | Each (Supplied on Cut Tape) | 1 | $ 2.85 | |
| 10 | $ 2.31 | |||
| 25 | $ 2.26 | |||
| 50 | $ 2.22 | |||
| 100 | $ 2.17 | |||
| 250 | $ 2.11 | |||
| 500 | $ 2.08 | |||
| 1000 | $ 2.05 | |||
Description
General part information
L7987L Series
The L7987L device is a step-down monolithic switching regulator able to deliver up to 2 A DC. The output voltage adjustability ranges from 0.8 V to almost VIN. The embedded switchover feature on the VBIASpin maximizes the efficiency at light load. The adjustable current limitation, designed to select the inductor RMS current accordingly with the nominal output current, and the high switching frequency capability make the size of the application compact. Pulse-by-pulse current sensing with digital frequency foldback implements an effective constant current protection over the different application conditions. The peak current foldback decreases the stress of the power components in heavy short-circuit condition. The PGOOD open collector output can also implement output voltage sequencing during the power-up phase. Multiple devices can be synchronized sharing the SYNCH pin to prevent beating noise in low noise applications like sensors with A/D conversion.