Texas Instruments TPS3613-01DGSG4

Overview

TPS3613-01DGSG4 from Texas Instruments is an adjustable supply voltage supervisory circuit with backup-battery switchover, dual reset outputs (active-high and active-low), 100-ms fixed power-on reset delay, and chip-enable gating with ≤3 ns propagation delay at 5 V. It monitors VDD via external feedback on the SENSE pin, supports VBAT > VDD operation, and delivers up to 400 mA from VOUT. It is used in portable battery-powered equipment requiring CMOS RAM data retention during brownout.

For engineers reviewing the TPS3613-01DGSG4 datasheet, TPS3613-01DGSG4 pinout, TPS3613-01DGSG4 application, or TPS3613-01DGSG4 equivalent, key selection criteria include adjustable threshold supervision, dual reset polarity, battery switchover timing behavior, CEIN-to-CEOUT propagation delay, and MSOP-10 thermal/power delivery limits under −40°C to +85°C operation.

Technical Context

The TPS3613-01DGSG4 integrates a precision voltage reference (1.15 V ±2 mV), hysteresis-controlled comparator for SENSE input (12 mV typical hysteresis), and a 100-ms internal timer for reset assertion release. Its switchover logic autonomously routes VOUT between VDD and VBAT based on relative voltage levels and threshold crossing sequence - not just instantaneous magnitude.

Chip-enable gating uses a series transmission gate between CEIN and CEOUT, disabled during reset assertion to isolate memory control lines. CEOUT is actively pulled to VOUT in disable mode, and the gate re-enables only after reset deassertion and CEIN stabilization, with a 15 µs timeout to complete ongoing write cycles.

Key Specifications

Pinout & Package

TPS3613-01DGSG4 is housed in a 10-pin VSSOP (DGS) package, 3.0 mm × 3.0 mm × 1.1 mm max height, RoHS-compliant, moisture sensitivity level 1, lead finish NiPdAu.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar supervisory circuit applications.

Compared with TPS3613-01DGSG4, both alternatives omit adjustable threshold supervision and battery switchover - critical for RAM-retention applications - making them unsuitable replacements unless design constraints eliminate those requirements entirely.

Availability

TPS3613-01DGSG4 is available at Aetrix Electronics and suitable for portable battery-powered equipment, set-top boxes, fax machines, and automotive infotainment systems requiring stable component supply with long-lifecycle assurance.

Supply support for TPS3613-01DGSG4 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 specializing in analog, embedded processing, and power management technologies, with decades of experience in high-reliability supervisory and power-integrity solutions.

The TPS3613 family was designed specifically for systems requiring seamless backup-battery switchover and chip-enable gating to protect volatile memory during power transitions - targeting portable, industrial, and automotive applications demanding zero-data-loss reliability.

FAQ

What is the exact reset threshold voltage of the TPS3613-01DGSG4?

The TPS3613-01DGSG4 does not have a fixed internal reset threshold. Its VIT is set externally via resistor divider on the SENSE pin, with nominal trip point at 1.15 V (range 1.13–1.17 V). This allows full adjustability across the 1.65–5.5 V VDD range - unlike fixed-threshold supervisors. The 1.15 V reference is internally trimmed and stable over temperature.

Does the TPS3613-01DGSG4 support VBAT higher than VDD?

Yes, the TPS3613-01DGSG4 explicitly supports VBAT > VDD operation. Its switchover logic disconnects VBAT from VOUT until VDD falls below VIT and VBAT exceeds VDD - enabling use of standard 3.6 V lithium cells with 3.3 V or lower main supplies. No external diode or OR-ing controller is required.

How does the chip-enable gating function during power-down?

During power-down, when VDD crosses VIT, the TPS3613-01DGSG4 disables the CEIN-to-CEOUT path. If CEIN is high, CEIN goes immediately to high-impedance; if CEIN is low, the gate stays enabled for up to 15 µs to complete the current write cycle before disabling - preventing partial memory writes and data corruption.

What is the maximum continuous output current from the VOUT pin of the TPS3613-01DGSG4?

The TPS3613-01DGSG4 supports up to 400 mA continuous output current at VOUT in VDD mode (RDS(on) ≤1 Ω), and up to 7.5 mA in VBAT mode (RDS(on) ≤15 Ω at 3.3 V). Derating applies above +25°C per the dissipation rating table - 220 mW max at +85°C ambient.

Is the TPS3613-01DGSG4 pin-compatible with other members of the TPS3613 family?

Yes, all TPS3613-x variants (e.g., TPS3613-01, TPS3613-02, TPS3613-03) share identical 10-pin VSSOP (DGS) packaging and pinout. Differences lie solely in functional configuration (e.g., reset polarity, threshold version), not physical layout - enabling drop-in replacement where electrical behavior matches system requirements.