onsemi CS8156YTVA5G

Overview

CS8156YTVA5G from onsemi is a low-dropout dual linear regulator delivering regulated 12 V ±5.0% at up to 750 mA and 5.0 V ±2.0% at up to 100 mA from a single input, with CMOS-compatible ENABLE control and integrated fault protection for automotive and industrial power rails.

For engineers reviewing the CS8156YTVA5G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage (0.4–1.0 V), sleep-mode quiescent current (0.2–50 µA), thermal shutdown, reverse-battery tolerance (−30 V DC), and TO-220 vertical-mount package compatibility with heatsinking.

Technical Context

The CS8156YTVA5G integrates two independent LDO regulators sharing a common VIN and GND, each with dedicated anti-saturation current limiting and thermal shutdown. The 12 V output uses pre-regulation and bandgap reference stabilization, while the 5.0 V standby output features separate ripple rejection (≥42 dB at 120 Hz) and tighter line/load regulation (≤50 mV).

ENABLE logic controls both outputs simultaneously: high enables both regulators; low forces SLEEP mode with ≤50 µA total quiescent draw. Overvoltage shutdown triggers at 28–45 V, and reverse-polarity protection sustains −30 V DC input without damage.

Key Specifications

Pinout & Package

The CS8156YTVA5G is housed in a 5-lead TO-220 vertical-mount package (Case 314K) with copper tab electrically connected to Pin 3 (GND); the tab serves as thermal path to heatsink and must be isolated from chassis ground if system grounding requires separation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output LDO regulator applications.

Compared with TLV70712PDP and NCP1117ST50T3G, the CS8156YTVA5G uniquely integrates dual regulated outputs, reverse-battery tolerance, and ENABLE-controlled sleep mode in a thermally capable TO-220 package-making it the only single-device solution for automotive dual-rail power management meeting ISO 16750 and AEC-Q100 requirements.

Availability

CS8156YTVA5G is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and telematics systems requiring stable component supply, long-lifecycle support, and AEC-Q100-compliant power regulation.

Supply support for CS8156YTVA5G 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.

The CS8156YTVA5G belongs to onsemi's automotive-grade linear regulator product line, engineered specifically for under-hood and safety-critical power delivery in vehicles compliant with ISO 16750 and AEC-Q100 standards.

FAQ

What is the maximum input voltage the CS8156YTVA5G can withstand during load dump events?

The CS8156YTVA5G is rated for +60 V peak transient voltage per ISO 7637-2 Pulse 1 and Pulse 2a, enabling reliable operation during automotive load dump events without external clamping. This specification is verified across −40°C to +125°C ambient and applies directly to the CS8156YTVA5G in its TO-220 vertical-mount package with proper PCB layout and grounding.

Does the CS8156YTVA5G require external capacitors for stability, and what type is recommended?

Yes, the CS8156YTVA5G requires external output capacitors: 22 µF tantalum or aluminum electrolytic on both VOUT1 and VOUT2. Ceramic or film capacitors are not recommended due to near-zero ESR, which risks instability. The CS8156YTVA5G datasheet specifies these values for guaranteed stability across temperature and load, and deviations require full transient and oscillation testing per Application Note AN-1029.

How does the ENABLE pin function in the CS8156YTVA5G, and what logic levels activate the outputs?

The ENABLE pin on the CS8156YTVA5G is CMOS-compatible and active-high: outputs activate when ENABLE ≥ 2.0 V (typical threshold), and disable into SLEEP mode when ENABLE ≤ 0.8 V. In SLEEP mode, total quiescent current drops to ≤50 µA. The CS8156YTVA5G draws no more than ±10 µA on ENABLE across temperature, ensuring compatibility with standard MCU GPIOs without level-shifting.

Is the copper tab on the CS8156YTVA5G electrically isolated, and how should it be connected?

No, the copper tab on the CS8156YTVA5G is electrically connected to Pin 3 (GND) per the internal construction of the TO-220 vertical-mount package (Case 314K). It must be thermally attached to a heatsink but electrically tied to system ground. If isolation is required, an insulating pad and shoulder washer must be used-though this degrades thermal performance by adding ~1.5°C/W junction-to-ambient resistance.

What is the thermal resistance (RθJA) of the CS8156YTVA5G in its standard TO-220 vertical-mount configuration?

The CS8156YTVA5G has a typical junction-to-ambient thermal resistance (RθJA) of 50°C/W when mounted on a 1-inch² FR-4 PCB with 2 oz copper and no heatsink. With a 10°C/W heatsink attached to the GND tab, RθJA improves to ~12°C/W, enabling continuous 750 mA output at 12 V with VIN = 14.5 V and ambient ≤85°C-verified in the CS8156YTVA5G thermal characterization data on page 5 of the datasheet.