Overview
The TPS7B86-Q1, produced by Texas Instruments, is a 500-mA, 40-V, adjustable, low-dropout linear regulator designed specifically for automotive applications. This device is AEC-Q100 qualified, ensuring it meets stringent automotive standards with a temperature range of –40°C to +125°C and a junction temperature of –40°C to +150°C. It features a low quiescent current of 17 µA at light loads, making it ideal for powering always-on components such as microcontrollers and CAN transceivers in standby systems. The regulator boasts state-of-the-art transient response and minimizes output overshoot during recovery from dropout, ensuring stable operation under various load and line conditions.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| VIN (Input Voltage) | 3 | - | 40 | V |
| VOUT (Output Voltage) | 1.2 | - | 18 | V |
| IOUT (Output Current) | 0 | - | 500 | mA |
| IQ (Quiescent Current) | - | 17 | - | µA |
| TJ (Operating Junction Temperature) | –40 | - | 150 | °C |
| RθJA (Junction-to-Ambient Thermal Resistance) | - | 29.7 (KVU), 41.8 (DDA) | - | °C/W |
| Line Regulation | - | 0.2% | - | % |
| Load Regulation | - | 0.45% (VOUT ≥ 3.3V), 0.625% (VOUT < 3.3V) | - | % |
Key Features
- AEC-Q100 qualified for automotive applications with temperature grade 1: –40°C to +125°C.
- Low quiescent current of 17 µA at light loads.
- Adjustable output voltage with tight DC accuracy of ±0.85% over line, load, and temperature.
- Power-good with programmable delay period.
- Stable with a 2.2-µF or larger capacitor.
- Functional Safety-Capable with documentation available to aid functional safety system design.
- Available in thermally conductive packaging options: 5-pin TO-252 and 8-pin HSOIC-8 with thermal pad.
- State-of-the-art transient response and minimized output overshoot during recovery from dropout.
Applications
- Reconfigurable instrument clusters.
- Body control modules (BCM).
- Always-on battery-connected applications:
- Automotive gateways.
- Remote keyless entries (RKE).
Q & A
- What is the input voltage range of the TPS7B86-Q1?
The input voltage range is from 3 V to 40 V.
- What is the maximum output current of the TPS7B86-Q1?
The maximum output current is 500 mA.
- What is the quiescent current of the TPS7B86-Q1 at light loads?
The quiescent current is 17 µA at light loads.
- What are the available package options for the TPS7B86-Q1?
The device is available in 5-pin TO-252 and 8-pin HSOIC-8 packages with thermal pads.
- Is the TPS7B86-Q1 AEC-Q100 qualified?
- What is the operating junction temperature range of the TPS7B86-Q1?
The operating junction temperature range is from –40°C to +150°C.
- Does the TPS7B86-Q1 have a power-good feature?
- What is the recommended output capacitor value for stability?
The recommended output capacitor value is 2.2 µF or larger.
- What are some typical applications of the TPS7B86-Q1?
Typical applications include reconfigurable instrument clusters, body control modules (BCM), automotive gateways, and remote keyless entries (RKE).
- Does the TPS7B86-Q1 support functional safety?
