RT6575K

High Efficiency Single Synchronous DC-DC Step-Down Controller with 5V LDO

RT6575K is a single-channel step-down controller generating supply voltage for battery-powered systems. It includes a Pulse-Width Modulation (PWM) controller adjustable from 2V to 5.5V, and a fixed 5V linear regulator. The linear regulator provides up to 100mA output current. Other features include on-board power-up sequencing, a power-good output, internal soft-start, and soft-discharge output that prevents negative voltage during shutdown.

A constant current ripple PWM control scheme operates without sense resistors and provides 100ns response to load transient. For maximizing power efficiency, the RT6575K automatically switches to the diode-emulation mode in light load applications. The RT6575K is available in the VQFN-16L 3x3 package.

Applications

Notebook and Sub-Notebook Computers
System Power Supplies

Key Spec.
	RT6575K
Status	Active
Vs (typ) (V)	5
Vin (min) (V)	5
Vin (max) (V)	25
Vout (min) (V)	2
Vout (max) (V)	5.5
Output Adj. Method	Resistor
Freq (typ) (kHz)	400;500
Iq (typ) (mA)	0.25
Features	Adjustable Current Limit;Adjustable Frequency;COT Control;Cycle-by-Cycle Current Limit;Enable Input;OCP;OVP;Power Good;Selectable (PSM or PWM);UVP
Package Type	VQFN3x3-16

Features

CCRCOT Control with 100ns Load Step Response
PWM Maximum Duty Ratio > 98%
5V to 25V Input Voltage Range
2V to 5.5V Output Voltage Range
5V LDO with 100mA Output Current
Two Selectable Frequency Settings
Internal Soft-Start and Soft-Discharge
4700ppm/°C R_DS(ON) Current Sensing
Independent Switcher Enable Control
Built-in OVP/UVP/OCP/OTP
Non-Latch UVLO
Power Good Indicator
RoHS Compliant and Halogen Free

Datasheet
Title	Last Update	Download
High Efficiency Single Synchronous DC-DC Step-Down Controller with 5V LDO	2023/07/27

Please confirm with our distributor or sales representative for actual stock status.