Texas Instruments LM9076BMA-5.0/NOPB

Overview

LM9076BMA-5.0/NOPB from Texas Instruments is a ±3% accuracy, 150 mA ultra-low-quiescent-current LDO regulator with integrated delayed reset output and shutdown control. It features 5.0 V fixed output, 25 μA typical ground current at 100 μA load, 200 mV typical dropout at 150 mA, and operates from 5.35 V to 40 V input. It is designed for automotive and industrial battery-connected systems requiring reliable power sequencing and microprocessor reset signaling.

For engineers reviewing the LM9076BMA-5.0/NOPB datasheet, LM9076BMA-5.0/NOPB pinout, LM9076BMA-5.0/NOPB application, or LM9076BMA-5.0/NOPB equivalent, key selection considerations include its 5.0 V regulated output tolerance, programmable reset delay via external capacitor, shutdown-controlled off-state ground current (15–25 μA), and −40°C to +125°C operating junction temperature range.

Technical Context

The LM9076BMA-5.0/NOPB uses a PNP pass transistor architecture enabling low-dropout operation while maintaining stability with ≥10 μF output capacitance. Its internal circuitry includes thermal shutdown, reverse-battery protection (−50 V transient), and +70 V positive input transients - all specified per AEC-Q100 stress requirements.

Reset functionality is implemented as an open-collector output activated when VOUT falls below 89% of nominal (4.45 V), with delay time determined by CDELAY pin charging at 0.42 μA. Shutdown logic is exclusive to the BMA variant: VSHUTDOWN <1.5 V enables regulation; >1.5 V disables output and forces RESET low after VOUT decay.

Key Specifications

Pinout & Package

LM9076BMA-5.0/NOPB is housed in an 8-pin SOIC (Package D), 1.75 mm max height, RoHS-compliant with Sn lead finish and MSL Level-1 rating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator with reset applications.

Compared with LM9076BMA-3.3/NOPB, the LM9076BMA-5.0/NOPB delivers higher output voltage for legacy 5 V peripherals while retaining identical automotive qualification and protection. Versus TLV73350PDBVR, it adds critical system-level functions - reset supervision, shutdown control, and ±50 V transient immunity - at the cost of larger SOIC-8 footprint.

Availability

LM9076BMA-5.0/NOPB is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and telematics control units requiring stable component supply across extended temperature and long product lifecycles.

Supply support for LM9076BMA-5.0/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with decades of automotive-qualified power management expertise.

The LM9076 product line targets battery-connected automotive and industrial systems needing robust, low-I_Q regulation with built-in power-good signaling and fault response - eliminating external supervision components.

FAQ

What is the maximum input voltage the LM9076BMA-5.0/NOPB can withstand during transients?

The LM9076BMA-5.0/NOPB supports +70 V for positive transients lasting ≤10 ms (duty cycle <1%) and −50 V for negative transients ≤1 ms (duty cycle <1%), per AEC-Q100 stress testing. Continuous DC operation is rated up to +40 V. These ratings are achieved through on-die protection circuitry - no external TVS diode is required for standard automotive load-dump or reverse-battery events. The LM9076BMA-5.0/NOPB maintains functional integrity across this full transient range.

How is the reset delay time calculated for the LM9076BMA-5.0/NOPB?

The reset delay time for LM9076BMA-5.0/NOPB is calculated using t_DELAY = V_OUT × C_DELAY / I_DELAY, where V_OUT = 5.0 V, I_DELAY = 0.42 μA typical, and C_DELAY is the external capacitor value. For example, with 0.001 μF, t_DELAY = 5.0 × 0.001 / 0.00042 ≈ 11.9 ms. This delay begins when VOUT rises above the valid-reset threshold (~1.3 V) and ends when the CDELAY pin voltage reaches VOUT. The LM9076BMA-5.0/NOPB implements this timing entirely internally - no external timer IC is needed.

Does the LM9076BMA-5.0/NOPB require an external pull-up resistor on the RESET pin?

Yes, the RESET pin of LM9076BMA-5.0/NOPB is open-collector and requires an external pull-up resistor to a valid logic-high voltage (typically VOUT or another system rail). Texas Instruments specifies a range of 10 kΩ to 200 kΩ. A 100 kΩ resistor is commonly used, providing sufficient rise time while minimizing current draw. Without this pull-up, the RESET signal remains floating and cannot assert a valid high level. This design allows flexible voltage-level translation and is integral to the LM9076BMA-5.0/NOPB's supervisor functionality.

What is the shutdown behavior of the LM9076BMA-5.0/NOPB?

When the SHUTDOWN pin voltage exceeds 1.5 V (typical), the LM9076BMA-5.0/NOPB disables its output stage, driving VOUT to near 0 V. During shutdown, ground current drops to 15–25 μA, and the RESET pin is forced low once VOUT decays below ~4.45 V. The SHUTDOWN pin draws only 6–35 μA depending on applied voltage. This behavior is exclusive to the BMA variant (SOIC-8) - the LM9076S-5.0 lacks shutdown. The LM9076BMA-5.0/NOPB thus enables precise system-level power gating without external FETs.

Can the LM9076BMA-5.0/NOPB be used in place of the LM9076S-5.0/NOPB?

No - LM9076BMA-5.0/NOPB and LM9076S-5.0/NOPB are not pin-compatible or functionally interchangeable. The LM9076BMA-5.0/NOPB is an 8-pin SOIC device with SHUTDOWN and CDELAY pins; the LM9076S-5.0/NOPB is a 5-pin TO-263 package without SHUTDOWN or CDELAY, and uses a different pinout. While both provide 5.0 V output and reset, the LM9076BMA-5.0/NOPB adds shutdown control and programmable delay, requiring distinct PCB layout and system integration. Substitution would necessitate board redesign and firmware adaptation for shutdown signaling.