General Description

The RTQ2102A and RTQ2102B are 1.5A, high-efficiency,

Advanced Constant-On-Time (ACOT®

) synchronous stepdown converters. The device operates with input

voltages from 3V to 6V. The device can program the

output voltage between 0.45V to VIN. The low quiescent

current design with the integrated low RDS(ON) power

MOSFETs achieves high efficiency over the wide load

range. The advanced COT operation allows transient

responses to be optimized over a wide range of loads,

and output capacitors to efficiently reduce external

component count. The RTQ2102A and RTQ2102B

provide up to 2.7MHz switching frequency to minimize

the size of output inductor and capacitors.

The RTQ2102A and RTQ2102B provide complete

protection functions such as input undervoltage lockout,

output undervoltage protection, overcurrent protection,

and thermal shutdown.

The cycle-by-cycle current limit provides protection

against shorted outputs and soft-start eliminates input

current surge during start-up. The RTQ2102A and

RTQ2102B are available in WDFN-8L 3x3 package.

Features

⚫ AEC-Q100 Grade 1 Qualified

⚫ Input Supply Voltage Range: 3V to 6V

⚫ Output Voltage Range: 0.45V to VIN

⚫ 1.5A Converter Integrated 110m and 90m FETS

in WDFN-8L 3x3 Package

⚫ Advanced Constant On-Time (ACOT®

) Control

 Ultrafast Transient Response

 No Needs for External Compensations

 Optimized for Low-ESR Ceramic Output

Capacitors

⚫ Low Quiescent Current: 30A

⚫ Steady Switching Frequency: 2.7MHz

 Automatic Power Saving Mode (PSM)

⚫ Input Undervoltage Lockout (UVLO)

⚫ Output Undervoltage Protection (UVP) with

Hiccup Mode

⚫ Over-Temperature Protection (OTP)

⚫ Power Good Indication

Applications

⚫ Mobile Phones and Handheld Devices

⚫ STB, Cable Modem, and xDSL Platforms

⚫ WLAN ASIC Power/Storage (SSD and HDD)

⚫ General Purpose for POL LV Buck Converter

⚫ Automotive Infotainment

⚫ Automotive Instrument Clusters & HUD

⚫ Car Connectivity