SP6650

Features:

95% High Efficiency
Proprietary Control Loop
2.7V to 6.5V Input Voltage Range
3.3V or Adjustable Output VoltageRange
2% Output Voltage Accuracy
600mA Output Current
100% Duty Cycle Operation
Programmable Inductor Peak CurrentLimit (0.95A or 0.5A)
No External FET's Required
3V Battery Low Indicator
2.7V Undervoltage Lockout
Shutdown Control
Small 10-Pin MSOP




Application

PDA
CD Player
ADSL Modem
Digital Still Camera




Pinout






Specifications

These are stress ratings only and functional operation of the device at these ratings or any other above those
indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect reliability.
PV_IN, V_IN...............................................................7V
All other pins................................-0.3V to V_IN+0.3V
PV_IN, PGND, LX current.........................................2A
Storage Temperature.......................-65°C to 150°C
Lead Temperature (Soldering 10sec)..............300°C

Specifications
Iout(mA)	600
Vin MIN. (V)	2.6
Vin MAX. (V)	6.5
IQ (A)	70
Vout MIN. (V)	1.3
Vout MAX. (V)	6
Freq (kHz)	PFM
Efficiency(%)	95
Comments	PFM, Fixed 3.3V output

Description

The SP6650 is ideal for portable applications that use a Li-Ion or 3 to 4 cell alkaline/NiCd/NiMHinput. The SP6650 extends battery life with it'sunique control loop scheme (patent pending),which maintains high efficiency levels (> than 90%) over a wide range of output currents. Features such as Inductor peak current control, protects the power supply from overload or short circuitconditions, controls the startup current to prevent output overshoot and excessive battery drop,and gives the user more flexibility in choosing an appropriate coil to optimize solution cost, size and performance. Other features include a dedicated pin for manual shutdown, a battery lowindicator, and thermal protection.