STMicroelectronics STV8163

Overview

STV8163 from STMicroelectronics is a monolithic triple positive voltage regulator IC delivering fixed 3.3 V ±2% (10 mA), fixed 5 V ±2% (10 mA), and programmable 2.5–16 V ±2% outputs, each supporting ≥0.6 A continuous current, with integrated reset (triggered by Output1 undervoltage) and digital disable (for Outputs 2 & 3), used in multi-rail embedded power systems requiring coordinated rail sequencing and fault monitoring.

For engineers reviewing the STV8163 datasheet, STV8163 pinout, STV8163 application, or STV8163 equivalent, key selection considerations include output dropout voltage (1.0–1.4 V at 0.6 A), reset threshold hysteresis (30–120 mV), thermal shutdown at 150 °C, and PROGRAM pin bias current (5 µA) for precision adjustable output configuration.

Technical Context

The STV8163 integrates three independent linear regulators sharing a single trimmed zener reference supplied from INPUT1 - meaning OUTPUT2 and OUTPUT3 are nonfunctional if INPUT1 is unpowered. Each output uses a Darlington-based pass stage, enabling low dropout (1.0 V typ.) while maintaining stability under load transients up to 0.6 A.

Its reset function monitors OUTPUT1 voltage via dual comparators: one triggers immediate low-going RESET when VOUT1 falls below (VOUT1 − 0.25 V), and a second provides hysteresis (≥30 mV) and controlled delay (25 ms with 100 nF capacitor) to prevent noise-induced glitches during power-up or brownout recovery.

Key Specifications

Pinout & Package

STV8163 is housed in an 11-pin Clipwatt plastic package (SO-11 variant), featuring exposed thermal pad for enhanced heat dissipation; package dimensions comply with STMicroelectronics mechanical drawing 5 (H3 = 19.85 mm, L2 = 10.7–11.2 mm).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple-voltage regulator applications.

Compared with TPS7A4700RGWR and LM2678T-ADJ/NOPB, the STV8163 uniquely integrates three regulated outputs, reset generation, and digital disable in one package - eliminating external supervisors and sequencing logic required by alternatives, at the cost of lower efficiency than switching solutions.

Availability

STV8163 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, set-top box power management, automotive body control units, and medical diagnostic imaging sensors requiring stable component supply and long-term obsolescence mitigation.

Supply support for STV8163 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The STV8163 belongs to ST's legacy power management IC portfolio, engineered specifically for compact, cost-sensitive multi-rail systems where integration of regulation, reset, and enable functions reduces board complexity without requiring switching efficiency.

FAQ

What is the minimum input voltage required for stable 3.3 V output?

The STV8163 requires INPUT1 ≥ 5.3 V to maintain 3.3 V ±2% regulation across 5–600 mA load. Below 5.3 V, dropout occurs and output drops linearly; operation below 5.3 V risks premature reset activation and thermal overload due to excessive power dissipation in the pass transistor.

Can OUTPUT2 and OUTPUT3 be disabled independently?

No - the DISABLE pin controls both OUTPUT2 and OUTPUT3 simultaneously. There is no provision for individual enable/disable of either output. To achieve independent control, external MOSFET switches or separate regulators must be added, as the STV8163 provides only a single digital disable signal shared between the two outputs.

How is the adjustable output voltage calculated from the PROGRAM pin?

VOUT3 = 2.0 V × (1 + R1/R2), where R1 connects OUTPUT3 to PROGRAM and R2 connects PROGRAM to GROUND. The internal 2.0 V reference forces 2.0 V at PROGRAM, so the resistor divider ratio directly scales VOUT3. For example, R1 = 30 kΩ and R2 = 10 kΩ yields VOUT3 = 8.0 V.

Is the RESET output compatible with 3.3 V logic systems?

Yes - RESET is an open-collector output rated for 20 V maximum, allowing direct interface with 3.3 V systems using a 3.3 V pull-up resistor. When active, it pulls low to ≤0.4 V at 5 mA sink current, meeting standard TTL/CMOS low-level thresholds; no level-shifting circuitry is required for 3.3 V microcontrollers.