Features: Ultra-low 12µA Quiescent Current
700mA Output Current at 2.6VIN, 3.3VOUT
94% Efficiency Possible
Wide Input Voltage Range: 0.85V to 4.5V
3.3V Fixed Output and adjustable 2.5V to 5.0V Output Range
Internal Synchronous Rectifier for High Efficiency
0.3 Charging Switch, 0.3 Synchronous Rectifier
Anti-Ringing Inductor Switch
Programmable Inductor Peak Current
Logic Shutdown Control
Under Voltage Lock-Out, 0.62V
Programmable Low Battery Detect
Small 10 pin MSOP PackageApplication Digital Still Cameras
MP3 Players
PDA's
Pagers
Handheld Portable Devices
Medical MonitorsPinout
SpecificationsLX, Vo, VBATT , LBON, FB to GND pin .................................. -0.3 to 6.0V
SHDN, LBI ............................................................ -0.3V to VBATT +0.5V
Vo, GND, LX Current ...................................................................... 1.3A
Reverse VBATT Current .............................................................. 220mA
Forward VBATT Current .............................................................. 500mA
Storage Temperature .................................................... -65 to 150
Operating Temperature .................................................. -40 to +85
Lead Temperature (Soldering, 10 sec) ........................................ 300
ESD Rating ............................................................................... 2kV HBM
DescriptionThe SP6649 is an ultra-low quiescent current, high efficiency step-up DC-DC converter ideal for single and dual cell alkaline, or Li-Ion battery applications such as digital still cameras, PDA's, MP3 players, and other portable devices. The SP6649 combines the high delivery associated with PWM control, and the low quiescent current and excellent light-load efficiency of PFM control. The SP6649 features 12µA quiescent current, synchronous rectification, a 0.3 charging switch, anti-ringing inductor switch, programmable low battery detect, under-voltage lockout and programmable inductor peak current. The device can be controlled by a 1nA active LOW shutdown pin.
SP6649 Data Sheet
