Texas Instruments TPS65030YZKT

Overview

TPS65030YZKT from Texas Instruments is a highly integrated power-management IC designed specifically for USB On-The-Go (OTG) systems, delivering four regulated outputs-5 V/100 mA (Vbus), 3.3 V/22 mA (Vout2), 1.5 V/200 mA (Vout3), and 1.8 V/60 mA (Vout4)-using fractional charge pumps and one LDO. It operates from a 3 V–5 V input (single Li-ion or USB bus), supports dynamic power-source switchover between battery and Vbus, and integrates sleep mode reducing quiescent current to 8 µA per enabled rail.

For engineers reviewing the TPS65030YZKT datasheet, TPS65030YZKT pinout, TPS65030YZKT application, or TPS65030YZKT equivalent, this device is selected for compact, low-EMI USB OTG power solutions requiring simultaneous multi-rail generation with minimal external components-including only ceramic capacitors-and precise sequencing control via EN1/EN2/EN3 and SLEEP inputs.

Technical Context

The TPS65030YZKT implements three independent charge-pump regulators (Vbus: fractional x1, Vout2/Vout3: fractional x1/2 + LDO fallback, Vout3 also supports step-down x1/2 mode above 3.5 V input) plus one dedicated 1.8 V LDO (Vout4). Each output features internal soft-start, overcurrent protection, and programmable enable/sleep control.

Its functional architecture includes an internal Vbus comparator enabling automatic switchover between battery (VIN) and USB bus (Vbus) for Vout2 and Vout3, dual SW_ENx pins for source selection, open-drain PGood monitoring across Vout2–Vout4, and TEST/SRP pin supporting both SRP protocol compliance and interconnect test mode with TUSB6010.

Key Specifications

Pinout & Package

TPS65030YZKT is housed in a 25-ball DSBGA (YZK) package measuring 2.51 mm × 2.70 mm, optimized for ultra-compact USB OTG implementations in handheld devices.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB OTG power management applications.

Compared with TPS65023RSBT and TPS65053RGER, the TPS65030YZKT uniquely combines charge-pump-based Vbus generation, ultra-small DSBGA packaging, and native SRP/test support - making it the only option optimized for space-constrained, single-cell USB OTG endpoints requiring full protocol compliance without external magnetics.

Availability

TPS65030YZKT is available at Aetrix Electronics and suitable for USB OTG host/peripheral implementations, portable media players, and handheld PCs requiring stable component supply, consistent parametric performance, and long-term lifecycle availability.

Supply support for TPS65030YZKT 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 connectivity technologies, with decades of expertise in power management IC design for portable and USB applications.

The TPS65030YZKT belongs to TI's USB-OTG–optimized PMIC product line, engineered to replace discrete power solutions in space- and cost-sensitive mobile endpoints while ensuring full USB 2.0 OTG electrical compliance.

FAQ

What is the primary function of the TPS65030YZKT in a USB OTG system?

The TPS65030YZKT serves as a complete power-management solution for USB On-The-Go systems, generating four regulated voltages - 5 V for Vbus, 3.3 V and 1.5 V via charge pumps, and 1.8 V via LDO - all from a single 3 V–5 V input. It enables dual-role operation by supporting automatic switchover between battery and USB bus power for key rails and integrates essential features like SRP compliance, PGood monitoring, and sleep mode. The TPS65030YZKT eliminates the need for multiple discrete regulators in compact OTG designs.

How does the TPS65030YZKT handle Vbus generation and Session Request Protocol (SRP)?

The TPS65030YZKT uses a fractional charge pump to generate 5 V/100 mA for Vbus directly from 3 V–5 V input. Its TEST/SRP pin controls SRP behavior: when pulled low, the Vbus charge pump starts with 1 mA current limit until Vbus reaches 2.5 V, then increases to 100 mA; when pulled high, it starts directly at full current. This ensures compliance with USB OTG SRP timing and current-profile requirements. The TPS65030YZKT's internal comparator and switchover logic further support robust Vbus management during host/peripheral role changes.

Can the TPS65030YZKT operate solely from a USB 5-V source without a battery?

Yes, the TPS65030YZKT supports operation from USB 5-V input alone. VIN accepts 3 V–5 V, and Vbus can serve as both output and input - allowing the device to power Vout2 and Vout3 from Vbus when SW_EN1/SW_EN2 are asserted. However, Vout4 (1.8 V LDO) and internal circuitry remain powered from VIN, so a valid VIN connection is mandatory even when Vbus is present. For true Vbus-only operation, an external path routing Vbus to VIN is required, respecting absolute maximum ratings (VIN ≤ 7 V).

What happens to output voltages during TPS65030YZKT sleep mode?

In sleep mode (SLEEP = high), the TPS65030YZKT disables its charge pumps and switches Vout2, Vout3, and Vout4 to low-quiescent LDO operation. Vout2 and Vout3 maintain their nominal voltages (3.3 V and 1.5 V) but reduce max output current to 100 µA; Vout4 remains a standard 1.8 V LDO with 60 mA capability and is unaffected by sleep mode. All three rails draw only 8 µA quiescent current each. The TPS65030YZKT exits sleep mode in 8 µs, restoring full charge-pump operation upon SLEEP deassertion.

Which external components are mandatory for stable TPS65030YZKT operation?

Mandatory external components for the TPS65030YZKT include: (1) 10-µF input capacitor (CI) on VIN; (2) 4.7-µF output capacitor (CO1) on Vbus; (3) 1-µF capacitor (CO2) on Vout2; (4) 10-µF capacitor (CO3) on Vout3; (5) 1-µF capacitor (CO4) on Vout4; and (6) flying capacitors - two 1-µF (CF1A/CF1B) for Vbus, one 0.1-µF (CF2) for Vout2, and one 1-µF (CF3) for Vout3. All must be X5R/X7R ceramic types. An external pullup resistor on PGood is also required for proper open-drain signaling.