1 Features

• AEC-Q100 qualified for automotive applications

– Device temperature grade 1: –40°C to 125°C

ambient operating temperature range

• Wide input voltage and output operation range

– Input voltage range: 2V to 36V

– 2.4V minimum for startup

– Boost mode output voltage range : 5V to 30V

– Pass-through mode output voltage up to 36V

– Fixed output options: 10V, 8.5V, and 6.5V

• Pass-through operation when VIN>VOUT_SET

– Typical 65μA quiescent current in Pass-through

– Constant frequency when entering and exiting

pass-through (TPS61388-Q1)

– Frequency foldback when entering and exiting

pass-through (TPS613881-Q1)

• Avoid AM band interference and crosstalk

– Optional switching 400kHz or 2.2MHz by FSW

pin

– Optional clock synchronization

– Spread spectrum frequency modulation

• High efficiency and power capability

– Peak current limit: 8A

– Low-side FET: 30mΩ, high-side FET: 25mΩ

• Minimized light load current consumption

– Typical 30μA quiescent current into VIN pin

– Typical 2μA quiescent current into VOUT pin

– Maximum 1.25μA shutdown current into VIN pin

– Selectable forced PWM mode, auto PFM mode

• Lead-less HotRod™ Lite package

• Integrated protection features

– Cycle-by-cycle peak current limit

– Output overvoltage protection

– Power good indicator

– Thermal shutdown protection at 170°C

2 Applications

• Pre-Boost for automotive Start-Stop/Cold crank

• Automotive infotainment and cluster

• Automotive camera ultrasonic cleaning system

• Land mobile

3 Description

The TPS61388-Q1 is a 36V, 8A automotive fullyintegrated

synchronous boost converter with passthrough

feature. The converter supports absmax

voltage up to 40V while the max boost output voltage

covers up to 30V.

The TPS61388-Q1 employs peak current mode

control scheme with frequency options of 400kHz

and 2.2MHz, and is capable of synchronized to an

external clock. There are two optional modes at

light load through MODE/SYNC pin configuring: Auto

PFM mode and Forced PWM mode to balance the

efficiency and noise immunity.

The device features low shutdown current and low

quiescent current Pass-through operation, eliminates

the need for an external bypass switch when the

supply voltage is greater than output target.

The TPS61388-Q1 has various fixed output

voltage versions to save the external components.

TPS61388-Q1 supports the external loop

compensation so that the stability and transient

response is optimized.

The device has built-in protection features like peak

current limit, overvoltage protection, and thermal

shutdown. External clock synchronization, spread

spectrum modulation, and a lead-less package with

minimal parasitic help to reduce EMI. The TPS61388-

Q1 is available in a 3.0mm × 2.5mm HotRod™ Lite

WQFN package with wettable flank.