TPS65321AQPWPRQ1
ActiveAUTOMOTIVE 3.6V TO 36V, 3.2A BUCK CONVERTER WITH WIDE VIN 280MA LDO REGULATOR
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TPS65321AQPWPRQ1
ActiveAUTOMOTIVE 3.6V TO 36V, 3.2A BUCK CONVERTER WITH WIDE VIN 280MA LDO REGULATOR
Technical Specifications
Parameters and characteristics for this part
| Specification | TPS65321AQPWPRQ1 |
|---|---|
| Frequency - Switching [Max] | 2.5 MHz |
| Frequency - Switching [Min] | 100 kHz |
| Grade | Automotive |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 14-PowerTSSOP |
| Package / Case [x] | 0.173 in |
| Package / Case [y] | 4.4 mm |
| Qualification | AEC-Q100 |
| Supplier Device Package | 14-HTSSOP |
| Topology | Step-Down (Buck) (1), Linear (LDO) (1) |
| Voltage - Supply [Max] | 36 V |
| Voltage - Supply [Min] | 3 V |
| Voltage/Current - Output 1 [custom] | 3.2 A |
| Voltage/Current - Output 1 [Max] [custom] | 20 V |
| Voltage/Current - Output 1 [Min] [custom] | 1.1 V |
| Voltage/Current - Output 2 | 280 mA |
| Voltage/Current - Output 2 [Max] | 5.5 V |
| Voltage/Current - Output 2 [Min] | 1.1 V |
| w/LED Driver | False |
| w/Sequencer | False |
| w/Supervisor | True |
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 | $ 2.68 | |
| 10 | $ 2.41 | |||
| 25 | $ 2.27 | |||
| 100 | $ 1.94 | |||
| 250 | $ 1.82 | |||
| 500 | $ 1.59 | |||
| 1000 | $ 1.32 | |||
| Digi-Reel® | 1 | $ 2.68 | ||
| 10 | $ 2.41 | |||
| 25 | $ 2.27 | |||
| 100 | $ 1.94 | |||
| 250 | $ 1.82 | |||
| 500 | $ 1.59 | |||
| 1000 | $ 1.32 | |||
| Tape & Reel (TR) | 2000 | $ 1.13 | ||
| Texas Instruments | LARGE T&R | 1 | $ 2.02 | |
| 100 | $ 1.67 | |||
| 250 | $ 1.20 | |||
| 1000 | $ 0.90 | |||
Description
General part information
TPS65321A-Q1 Series
The TPS65321A-Q1 device is a combination of a high-VIN DC-DC step-down converter, referred to as the buck regulator, with an adjustable switch-mode frequency from 100-kHz to 2.5-MHz, and a high-VIN 280-mA low-dropout (LDO) regulator. The input range is 3.6 V to 36 V for the buck regulator, and 3 V to36 V for the LDO regulator. The buck regulator has an integrated high-side MOSFET with an active-low, open-drain power-good output-pin (nRST). The LDO regulator features a low-input supply current of 45-µA typical in no-load, also has an integrated MOSFET. Low-voltage tracking feature enables TPS65321A-Q1 to track the input supply during cold-crank conditions.
The buck regulator provides a flexible design to fit system needs. The external loop compensation circuit allows for optimization of the converter response for the appropriate operating conditions. A low-ripple pulse-skip mode reduces the no-load input-supply current to maximum 140 µA.
The device has built-in protection features such as soft start, current-limit, thermal sensing and shutdown due to excessive power dissipation. Furthermore, the device has an internal undervoltage-lockout (UVLO) function that turns off the device when the supply voltage is too low.
Documents
Technical documentation and resources
