Texas Instruments TPS62002DGSG4

Overview

TPS62002DGSG4 from Texas Instruments is a fixed-output, synchronous step-down DC-DC converter delivering 1.2 V at up to 600 mA from a 2–5.5 V input, featuring 95% peak efficiency, 50 μA quiescent current in power-save mode, and internal soft-start. It targets low-power portable systems requiring stable, low-noise voltage regulation with minimal external components.

For engineers reviewing the TPS62002DGSG4 datasheet, TPS62002DGSG4 pinout, TPS62002DGSG4 application, or TPS62002DGSG4 equivalent, key selection considerations include its 1.2 V fixed output, 750 kHz nominal switching frequency, pin-programmable current limit (600 mA/1.2 A), PFM/PWM hybrid operation, and VSSOP-10 package compatibility with space-constrained battery-powered designs.

Technical Context

The TPS62002DGSG4 implements a current-mode, synchronous buck topology with integrated P-channel high-side and N-channel low-side MOSFETs. Its control loop uses internal compensation and supports three functional modes: forced PWM (SYNC = VIN), power-save PFM (SYNC = GND), and external synchronization (500–1000 kHz).

It features antiringing switch circuitry (active only in fixed-output variants), 100% duty-cycle dropout operation, undervoltage lockout (~1.6 V), and a power-good comparator with 92% threshold and 100 μs startup delay. The device operates across –40°C to 85°C ambient temperature.

Key Specifications

Pinout & Package

TPS62002DGSG4 is housed in a 10-pin VSSOP (DGS) package measuring 3.00 mm × 3.00 mm, optimized for high-density PCB layouts in portable electronics.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Compared with TPS62001DGSG4 and TPS62003DGSG4, the TPS62002DGSG4 provides optimal trade-off between core logic compatibility (1.2 V matches ARM9/ARM11 processors) and efficiency at mid-range loads, while retaining identical layout, thermal, and timing behavior across the family.

Availability

TPS62002DGSG4 is available at Aetrix Electronics and suitable for cellular phones, digital cameras, USB-based DSL modems, and handheld PCs requiring stable component supply with consistent parametric performance and long-term manufacturability.

Supply support for TPS62002DGSG4 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 ICs, with decades of expertise in high-efficiency DC-DC conversion.

The TPS6200x product line was designed specifically for battery-powered portable electronics requiring ultra-low quiescent current, small solution size, and seamless transition between high-efficiency PFM and low-noise PWM operation.

FAQ

What is the output voltage tolerance of the TPS62002DGSG4 under full load?

The TPS62002DGSG4 delivers a fixed 1.2 V output with ±3% tolerance across 10–600 mA load current and 2.5–5.5 V input voltage, as specified in the electrical characteristics table. This tolerance holds regardless of operating mode (PFM or PWM) and includes line, load, and temperature variation effects within the –40°C to 85°C ambient range. The TPS62002DGSG4 achieves this stability using an internal precision voltage reference and trimmed feedback divider.

Can the TPS62002DGSG4 operate with a 1.8 V input supply?

No - the TPS62002DGSG4 has a minimum recommended input voltage of 2 V per the datasheet's Recommended Operating Conditions. While the absolute maximum rating allows down to –0.3 V, operation below 2 V risks undervoltage lockout activation (typical threshold 1.6 V) and unstable regulation. For sub-2 V inputs, TI recommends the TPS62040 or TPS621xx families, which support 1.8 V minimum input. The TPS62002DGSG4 is optimized for 2–5.5 V sources like Li-ion or multi-cell alkaline batteries.

How does the ILIM pin configure current limiting on the TPS62002DGSG4?

The ILIM pin on the TPS62002DGSG4 selects between two factory-trimmed current limits: connecting ILIM to GND sets the switch current limit to 600 mA (typical), while connecting ILIM to VIN raises it to 1.2 A (typical). This configuration occurs at power-up and remains static during operation. The setting directly affects maximum sustainable output current and short-circuit robustness but does not alter regulation accuracy or quiescent current. No external resistor is needed - the TPS62002DGSG4 uses internal comparators to detect the ILIM logic level.

Is the TPS62002DGSG4 compatible with ceramic output capacitors?

Yes - the TPS62002DGSG4 is fully compatible with ceramic output capacitors, and the datasheet explicitly specifies 10 μF X5R/X7R ceramics for V_OUT ≥1.8 V (e.g., 1.2 V is covered by the ≥1.8 V condition since 1.2 V < 1.8 V, but the device's internal compensation is stable with standard 10 μF ceramics). The TPS62002DGSG4's internal compensation eliminates the need for ESR-based stabilization, making it robust with low-ESR MLCCs. For best transient response, place the capacitor within 3 mm of the PGND and FB pins.

Does the TPS62002DGSG4 require an external feedback resistor network?

No - the TPS62002DGSG4 is a fixed-output variant with the feedback divider integrated internally. Pin 5 (FB) is internally connected to the 1.2 V reference node and must be left unconnected or tied to AGND per layout guidelines; adding external resistors will disrupt regulation. Only the adjustable TPS62000DGS requires an external R1/R2 divider. The TPS62002DGSG4's fixed 1.2 V output is laser-trimmed at wafer test, ensuring accuracy without user configuration.