ML3406 Datasheet | MDC

Description The ML3406 is a high efficiency monolithic synchronous step-down regulator using a constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages of 1.5V and 1.8V Supply current during operation is only 20µA and drops to ≤1µA in shutdown. The 2.5V to 5.5V input voltage range makes the ML3406 ideally suited for single LI-Ion battery-powered applications. 100% duty cycle provides low dropout operation extending battery life in portable systems. Automatic Burst Mode operation increases efficiency at light loads, further extending battery life. Switching frequency is internally set at 1.5MHZ, allowing the use of small surface mount inductors and capacitors. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.6V feed-back reference voltage. The ML3406 is available in a low profile SOT-23-5L package. .. Features 2.5V to 5.5V Input Voltage Range 600m A Output Current 1.5MHz Constant Frequency Operation Low Quiescent Current: Only 20µA During Operation High Efficiency: Up to 96% Low Dropout Operation:100% Duty Cycle No Schottky Diode Required 0.6 V Reference Allows Low Output Voltages Shutdown Mode Draws ≤ 1µA Supply Current Current Mode Operation for Excellent Line and Load Transient Response Over temperature Protected Mini Package SOT-23-5L Application Cellular Telephones Personal Information Appliances Wireless and DSL Modems Digital Still Cameras MP3 Players Portable Instruments Ordering Information Item Package Shipping 3000/Reel&Tape 3000/Reel&Tape 3000/Reel&Tape ML3406NFBMRG SOT-23-5 ML3406N15MRG SOT-23-5 ML3406N18MRG SOT-23-5 Efficiency - Load current Typical Information Figure 1 Figure 2 1 / 12 Rev. E, Sep 2005 Pin Configuration Pin Functions Run (Pin1): Run control Input. Forcing this pin above 1.5V enables the part. Forcing this pin below 0.3V shuts down the...