RT6296B

2A, 17V Current Mode Synchronous Step-Down Converter

The RT6296B is a high-efficiency, 2A current mode synchronous step-down DC-DC converter with a wide input voltage range from 4.5V to 17V. The device integrates 100mΩ high-side and 40mΩ low-side MOSFETs to achieve high efficiency conversion. The current mode control architecture supports fast transient response and internal compensation. A cycle-by-cycle current limit function provides protection against shorted output. The RT6296B provides complete protection functions such as input under-voltage lockout, output under-voltage protection, over-current protection, and thermal shutdown. The PWM frequency is adjustable by the EN/SYNC pin. The RT6296B is available in the TSOT-23-8 (FC) package.

Applications

Industrial and Commercial Low Power Systems
Computer Peripherals
LCD Monitors and TVs
Set-top Boxes

Key Spec.
	RT6296B
Status	Active
Vin (min) (V)	4.5
Vin (max) (V)	17
Number of Outputs	1
Vout (min) (V)	0.807
Vout (max) (V)	5
Output Adj. Method	Resistor
Iout (max) (A)	2
Current Limit (typ) (A)	4
Freq (typ) (kHz)	500
Freq (min) (kHz)	200
Freq (max) (kHz)	2000
Ext Sync	Yes
Ron_HS (typ) (mOhm)	100
Ron_LS (typ) (mOhm)	40
Iq (typ) (mA)	0.8
Features	Adjustable Soft-Start;Built-in Bootstrap Switch;Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;External Synchronization;Force PWM;Internal Compensation;OCP;OTP;Stable with Ceramic Capacitor;UVP
Package Type	TSOT-28(FC)

Features

4.5V to 17V Input Voltage Range
2A Output Current
Internal N-Channel MOSFETs
Current Mode Control
Fixed Switching Frequency : 500kHz
Synchronous to External Clock : 200kHz to 2MHz
Cycle-by-Cycle Current Limit
External Soft-Start Function
Input Under-Voltage Lockout
Output Under-Voltage Protection
Thermal Shutdown

Datasheet
Title	Version	Last Update	Download
RT6296B: 2A, 17V Current Mode Synchronous Step-Down Converter	V3.0	2015/05/19

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	2600

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

Part Number	Package Type	Package Qty.	Free Sample	Distributor	Stock	Buy From Authorized Distributor
RT6296BGJ8F	TSOT-28(FC)	3,000	Request	Digikey	2,913	Buy
				Mouser	Lead-Time: 14 weeks	Not Available
				WPG	Lead-Time: 14 weeks	Not Available

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