Peak 12A, 6.5V, 460kHz Synchronous Step-Down Converter

RTQ2158A-QA

The RTQ2158A is a high-performance, Advanced Constant On-Time (ACOT^®) monolithic synchronous step-down DC-DC converter that can deliver up to peak 12A output current from a 2.85V to 6.5V input supply. The device integrates low R_DS(ON) power MOSFETs, accurate 0.6V reference and an integrated diode of bootstrap circuit to offer a very compact solution.

The RTQ2158A adopts Advanced Constant On-Time (ACOT^®) control architecture that provides ultrafast transient response and further reduces the external-component count. In steady states, the ACOT^® operates in nearly constant switching frequency over line, load and output voltage ranges and makes the EMI filter design easier.

The device offers independent enable control input pin and power good indicator for easily sequence control. To control the inrush current during the startup, the device provides a programmable soft-start up by an external capacitor connected to the SS pin. Fully protection features are also integrated in the device including the cycle-by-cycle current limit control, UVP, input UVLO and OTP. The RTQ2158A-QA is available in a thermally enhanced WET-WQFN-21L 4x4 (FC) package.

Applications

Automotive Systems
Infotainment and Cockpit Systems
Vehicle ADAS ECU
Connected Car Systems
High Density DDR Memory
Broadband Communications and Industrial Systems

Key Spec.

	RTQ2158A-QA
Status	Active
Vin (min) (V)	2.85
Vin (max) (V)	6.5
Number of Outputs	1
Vout (min) (V)	0.6
Vout (max) (V)	3.3
Output Adj. Method	Resistor
Iout (max) (A)	12
Current Limit (typ) (A)	14.3
Freq (typ) (kHz)	460
Ext Sync	No
Ron_HS (typ) (mOhm)	15
Ron_LS (typ) (mOhm)	10
Iq (typ) (mA)	0.5
Features	ACOT Control;AEC-Q100;Adjustable Soft-Start;Built-in Bootstrap Switch;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;Force PWM;Industrial;Internal Compensation;OTP;Power Good;Stable with Ceramic Capacitor;UVP
Package Type	WET-WQFN4x4-21(FC)