Technical Specifications
Parameters and characteristics commom to parts in this series
| Specification | A6985FTR | A6985 Series |
|---|---|---|
| - | - | |
| Current - Output | 500 mA | 500 mA |
| Frequency - Switching [Max] | 2 MHz | 2 MHz |
| Frequency - Switching [Min] | 250 kHz | 250 kHz |
| Function | Step-Down | Step-Down |
| Grade | Automotive | Automotive |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Outputs | 1 | 1 |
| Operating Temperature [Max] | 150 °C | 150 °C |
| Operating Temperature [Min] | -40 °C | -40 °C |
| Output Configuration | Positive | Positive |
| Output Type | Adjustable | Adjustable |
| Package / Case | 16-PowerTSSOP | 16-PowerTSSOP |
| Package / Case | 0.173 in, 4.4 mm Width | 0.173 - 4.4 in |
| Qualification | AEC-Q100 | AEC-Q100 |
| Supplier Device Package | 16-HTSSOP | 16-HTSSOP |
| Synchronous Rectifier | True | True |
| Topology | Buck | Buck |
| Voltage - Input (Max) [Max] | 38 V | 38 V |
| Voltage - Input (Min) [Min] | 4 V | 4 V |
| Voltage - Output (Max) | 38 V | 38 V |
| Voltage - Output (Min/Fixed) | 0.85 V | 0.85 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tape & Reel (TR) | 2500 | $ 1.71 | |
| 5000 | $ 1.67 | |||
A6985 Series
Automotive 38 V, 500 mA synchronous step-down switching regulator with 30 µA quiescent current
| Part | Operating Temperature [Max] | Operating Temperature [Min] | Output Type | Output Configuration | Topology | Qualification | Mounting Type | Number of Outputs | Current - Output | Package / Case | Package / Case | Frequency - Switching [Max] | Frequency - Switching [Min] | Grade | Synchronous Rectifier | Voltage - Output (Min/Fixed) | Voltage - Output (Max) | Supplier Device Package | Voltage - Input (Min) [Min] | Function | Voltage - Input (Max) [Max] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
STMicroelectronics A6985FTR | |||||||||||||||||||||
STMicroelectronics A6985FTR | 150 °C | -40 °C | Adjustable | Positive | Buck | AEC-Q100 | Surface Mount | 1 | 500 mA | 16-PowerTSSOP | 0.173 in, 4.4 mm Width | 2 MHz | 250 kHz | Automotive | 0.85 V | 38 V | 16-HTSSOP | 4 V | Step-Down | 38 V |
Description
General part information
A6985 Series
The A6985F automotive grade device is a step-down monolithic switching regulator able to deliver up to 0.5 A DC. The output voltage adjustability ranges from 0.85 V to VIN. The 100% duty cycle capability and the wide input voltage range meet the cold crank and load dump specifications for automotive systems. The "Low Consumption Mode" (LCM) is designed for applications active during car parking, so it maximizes the efficiency at light-load with controlled output voltage ripple. The "Low Noise Mode" (LNM) makes the switching frequency constant and minimizes the output voltage ripple overload current range, meeting the low noise application specification like car audio. The output voltage supervisor manages the reset phase for any digital load (μC, FPGA). The RST open collector output can also implement output voltage sequencing during the power-up phase. The synchronous rectification, designed for high efficiency at medium - heavy load, and the high switching frequency capability make the size of the application compact. Pulse by pulse current sensing on both power elements implements an effective constant current protection.
Documents
Technical documentation and resources