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1 Features

1? Qualified for Automotive Applications

? 1.8-V to 6-V Input Voltage Range

? Adjustable Output Voltage Range Up to 28 V

? 400-mA (TPS61040-Q1) and 250-mA (TPS61041-

Q1) Internal Switch Current

? Up to 1-MHz Switching Frequency

? 28-μA Typical No Load Quiescent Current

? 1-μA Typical Shutdown Current

? Internal Soft Start

? Space-Saving, 5-Pin SOT-23 Package

2 Applications

? Automotive Telematics, eCall, and Tolling

? Infotainment and Clusters

? Advanced Driver Assistance System (ADAS)

? LCD Bias Supplies

? White-LED Supplies for LCD Backlights

? Dual-CELL NiMH/NiCd or Single-CELL Li-Ion

Battery-Powered Systems

? Standard 3.3-V or 5-V to 12-V Conversions

3 Description

The TPS6104x-Q1 devices are high-frequency boost

converters for automotive applications. The devices

are ideal for generating output voltages up to 28 V

from a pre-regulated low voltage rail, dual-cell

NiMH/NiCd or a single-cell Li-Ion battery, supporting

input voltages from 1.8 V to 6 V.

The TPS6104x-Q1 devices operate with a switching

frequency up to 1 MHz, allowing the use of small

external components such as ceramic as well as

tantalum output capacitors. Combined with the spacesaving,

5-pin SOT-23 package, the TPS6104x-Q1

devices accomplish a small overall solution size. The

TPS61040-Q1 device has an internal 400-mA switch

current limit, while the TPS61041-Q1 device has a

250-mA switch current limit, offering lower output

voltage ripple and allowing the use of a smaller form

factor inductor for lower-power applications.

The TPS6104x-Q1 devices operate in a pulse

frequency modulation (PFM) scheme with constant

peak current control. The combination of low

quiescent current (28 μA typical) and the optimized

control scheme enable operation of the devices at

high efficiencies over the entire load current range.