Features

• 2.5V to 5.5V Supply Voltage Range at IN

• 29V Abs. Max. Rating at OUT

 80V Surge Protection (IEC61000-4-5)

 8kV ESD Contact Discharge (IEC61000-4-2)

 15kV ESD Air Gap Discharge (IEC61000-4-2)

• 30m typ. On-Resistance from IN to OUT

• Adjustable Current Limit Protection (CLP)

 400mA to 3.7A via RISET

• Over-Current Protection (OCP)

• Short-Circuit Protection (SCP)

• “Ideal Diode” Reverse Current Protection (RCP)

• Over Temperature Protection (OTP)

• Soft-Start (SS) Limits Inrush Current

• Fast Turn ON supports USB Fast Role Swap (FRS)

 Open-Drain ̅F̅̅L̅̅T̅ Flag

• Safety approvals

 UL 2367, file no. E515099

• -40°C to 85°C Operating Temperature Range

• 16-bump WLCSP 1.98 x 1.98mm (0.5mm pitch)

• Pin-to-Pin with NX5P3290A & NX5P3363

Applications

• Notebooks, Ultra-Books, Desktop PCs

• Smartphones, Tablets, Gaming Consoles

• Set-Top Box, Networking, any USB ISOURCE Port

Brief Description

The KTS1690A is a low-resistance load switch with

adjustable current limit, soft-start, fast turn ON mode,

“ideal diode” reverse current protection, and integrated

TVS. It is optimized to protect systems with USB type-

C ports that source up to 15W at 5V and must withstand

up to 29V on VBUS (OUT pin).

The KTS1690A uses an external resistor to set the

current limit from 400mA to 3.7A.

Soft-start limits inrush current, while the FON logic input

enables fast turn ON mode for USB fast role swap

(FRS). Automatic “ideal diode” reverse current

protection (RCP) isolates the system’s 5V internal rail

whenever VBUS (OUT pin) is driven to a higher voltage,

as when charging. The integrated TVS provides IEC

Standards 8kV ESD contact, 15kV ESD air gap, and

80V surge ratings for robust system protection. A ̅F̅L̅̅T̅̅

flag indicates an over-current or over-temperature fault

condition.

The KTS1690A is available in advanced, fully “green”

compliant, 1.98 x 1.98mm, 16-bump Wafer-Level Chip-

Scale Package (WLCSP).