RT8004

3A, 4MHz, Synchronous Step-Down Regulator

The RT8004 is a high efficiency synchronous, step-down DC/DC converter. Its input voltage range is from 2.65V to 5.5V and provides an adjustable regulated output voltage from 0.8V to 5V while delivering up to 3A of output current.

The internal power switch with 75mΩ on-resistance increases efficiency and eliminates the need for an external Schottky diode. Switching frequency is set by an external resistor or can be synchronized to an external clock. 100% duty cycle provides low dropout operation extending battery life in portable systems. External compensation allows the transient response to be optimized over a wide range of loads and output capacitors.

The RT8004 operates in Forced Continuous Mode which reduces noise and RF interference. 100% duty cycle in Low Dropout Operation further maximize battery life.

應用

Portable Instruments
Battery-Powered Equipment
Notebook Computers
Distributed Power Systems
IP Phones
Digital Cameras

關鍵參數

主要規格
	RT8004
Status	EOL
Vin (min) (V)	2.65
Vin (max) (V)	5.5
Number of Outputs	1
Vout (min) (V)	0.8
Vout (max) (V)	5
Output Adj. Method	Resistor
Iout (max) (A)	3
Current Limit (typ) (A)	5.2
Freq (typ) (kHz)	1000
Freq (min) (kHz)	300
Freq (max) (kHz)	4000
Ext Sync	Yes
Ron_HS (typ) (mOhm)	75
Ron_LS (typ) (mOhm)	69
Iq (typ) (mA)	0.1
Features	100% Duty Cycle;Adjustable Frequency;Adjustable Soft-Start;Current Mode Control;Enable Input;External Synchronization;OCP;Power Good;Selectable (PSM or PWM);Stable with Ceramic Capacitor;UVP
Package Type	VQFN4x4-16;TSSOP-16(PP)

關鍵特性

High Efficiency : Up to 95%
Low Quiescent Current : 100μA
Low R_DS(ON) Internal Switches : 75mΩ
Programmable Frequency : 300kHz to 4MHz
No Schottky Diode Required
0.8V Reference Allows Low Output Voltage
Low Dropout Operation : 100% Duty Cycle
Synchronizable Switching Frequency
Power Good Output Voltage Monitor
Over Temperature Protection
Thermally Enhanced TSSOP-16 (Exposed Pad) and 16-Lead VQFN 4x4 Packages
RoHS Compliant and 100% Lead (Pb)-Free