ML3406 Datasheet, PDF (1/12 Pages) List of Unclassifed Manufacturers – Synchronous Step-Down DC-DC Controller

ML3406
ML3406
Synchronous Step-Down DC-DC Controller
Vout=1.5V, 1.8V Iout=600mA f=1.5MHz
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.
Ordering Information
Item
Package
ML3406NFBMRG SOT-23-5
ML3406N15MRG SOT-23-5
ML3406N18MRG SOT-23-5
Shipping
3000/Reel&Tape
3000/Reel&Tape
3000/Reel&Tape
Features
2.5V to 5.5V Input Voltage Range
600mA 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
Typical Information
Efficiency – Load current
ML3406
Figure 1
1 / 12
Figure 2
Rev. E, Sep 2005