Automotive 500-mA, 40-V, low dropout (LDO) regulator with power good
Product details
Parameters
Package | Pins | Size
Features
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Junction temperature: –40°C to +150°C, TJ
- Input voltage range: 3 V to 40 V (42 V max)
- Output voltage range: 3.3 V and 5 V (fixed)
- Maximum output current: 500 mA
- Output voltage accuracy: ±0.85% (max)
- Low dropout voltage:
- 475 mV (max) at 450 mA
- Low quiescent current:
- 17 µA (typ) at light loads
- Excellent line transient response:
- ±2% VOUT deviation during cold-crank
- ±2% VOUT deviation (1-V/µs VIN slew rate)
- Power-good with programmable delay period
- Stable with a 2.2-µF or larger capacitor
- Package options:
- 5-pin TO-252 package: 29.7°C/W RθJA
- 8-pin HSOIC-8 package with thermal pad: 41.8°C/W RθJA
All trademarks are the property of their respective owners.
Description
The TPS7B87-Q1 is a low-dropout linear regulator designed to connect to the battery in automotive applications. The device has an input voltage range extending to 40 V, which allows the device to withstand transients (such as load dumps) that are anticipated in automotive systems. With only a 17-µA quiescent current at light loads, the device is an optimal solution for powering always-on components such as microcontrollers (MCUs) and controller area network (CAN) transceivers in standby systems.
The device has state-of-the-art transient response that allows the output to quickly react to changes in load or line (for example, during cold-crank conditions). Additionally, the device has a novel architecture that minimizes output overshoot when recovering from dropout. During normal operation, the device has a tight DC accuracy of ±0.85% over line, load, and temperature.
The power-good delay can be adjusted by external components, allowing the delay time to be configured to fit application-specific systems.
The device is available in thermally conductive packaging to allow the device to efficiently transfer heat to the circuit board.
Similar but not functionally equivalent to the compared device:
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TPS7B87-Q1 500-mA, 40-V, Low-Dropout Regulator With Power-Good datasheet | Dec. 07, 2020 |
User guide | MLTLDO2EVM-037 Evaluation Module User's Guide | May 22, 2020 | |
Technical articles | LDO basics: capacitor vs. capacitance | Aug. 01, 2018 | |
Technical articles | LDO Basics: Preventing reverse current | Jul. 25, 2018 | |
Technical articles | LDO basics: introduction to quiescent current | Jun. 20, 2018 | |
Technical articles | LDO basics: noise – part 1 | Jun. 14, 2017 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The MLTLDO2EVM-037 multipackage low-dropout (LDO) evaluation module (EVM) allows design engineers to evaluate the operation and performance of several common packages of linear regulators for possible use in their own circuit application. This EVM configuration contains a DDA, 3-pin and 5-pin KVU (...)
Features
- Supports most LDO linear regulators in
- DDA package
- 3-pin and 5-pin KVU package
- DCY package
Design tools & simulation
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SO PowerPAD (DDA) | 8 | View options |
TO-252 (KVU) | 5 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.