RT6215E

2A, 24V, 500kHz, ACOT® Step-Down Converter

The RT6215E is a high-efficiency, monolithic synchronous step-down DC-DC converter that can deliver up to 2A output current from a 4.5V to 24V input supply. The RT6215E adopts advanced constant on-time (ACOT®) architecture to provides a very fast transient response with few external components and keep in constant frequency. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. Input under-voltage lock-out, output under-voltage protection, over-current protection, and over-temperature protection offer completely safe and smooth operation in all applied conditions.

Applications

Set Top Box
Portable TV
Access Point Router
DSL Modem
LCD TV

Key Spec.
	RT6215E
Status	Active
Vin (min) (V)	4.5
Vin (max) (V)	24
Number of Outputs	1
Vout (min) (V)	0.791
Vout (max) (V)	5
Output Adj. Method	Resistor
Iout (max) (A)	2
Current Limit (typ) (A)	2.7
Freq (typ) (kHz)	500
Ext Sync	No
Ron_HS (typ) (mOhm)	100
Ron_LS (typ) (mOhm)	85
Iq (typ) (mA)	0.17
Features	ACOT Control;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OCP;OTP;PSM;Stable with Ceramic Capacitor;UVP
Package Type	TSOT-28(FC)

Features

4.5V to 24V Input Voltage Range
2A Output Current
500kHz Switching Frequency
Advanced Constant On-Time Control
Fast Transient Response
Stable with Low ESR Ceramic Output Capacitors
Adjustable Output Voltage from 0.791V to 5V
Integrated 100mΩ/85mΩ MOSFETs
Monotonic Start-Up into Pre-Biased Outputs
Enable Control
Cycle-by-Cycle Over Current Limit Protection
Input Under-Voltage Lockout
Output Under-Voltage Protection with Hiccup Mode
Over-Temperature Protection
RoHS Compliant and Halogen Free

Datasheet
Title	Last Update	Download
2A, 24V, 500kHz, ACOT® Step-Down Converter	2018/05/25

Technical Documents
Title	Item Type	Last Update	Download
Richtek Product Selection Guide [Jan., 2024]	Selection Guide	2024/01/18
Richtek Featured Product Tree [Aug., 2023]	Selection Guide	2023/08/07

Videos
Title	Last Update	Views
How to estimate control loop bandwidth from the transient response time?	2017/03/30	2149

Reference Design
Title	Last Update	Download
Richtek Load Transient Tool	2022/07/25

Part Number	Package Type	Package Qty.	Free Sample	Buy From Authorized Distributor
RT6215EHGJ8F	TSOT-28(FC)	3000	Request	Buy from Distributor

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