LITEON Technology LSP3601
The LSP3601 is a boost topology switching regulator control IC for battery-used applications field. The LSP3601 includes a totem-pole single output stage for driving NPN transistor or N-MOS, high precision reference (0.5V) for comparing output voltage with feedback amplifier, an internal dead-time control for controlling the minimum duty cycle, programmable soft start with short circuit protection function and logic level control for operating mode or standby mode.FEATURES
Wide supply voltage operating range: 1.8 to 15V Reference voltage precision: 4% Low current consumption: Operation Mode 5.5mA Standby Mode: 1µA High speed oscillator frequency: 1MHz max Programmable Soft Start function (SS) Short Circuit Protection function (SCP) Totem-pole output with adjustable on/off current (for NPN transistors or n-channel MOSFET) Logic level control stand-by mode function Package: SOP8/MSOP8/TSSOP8 TYPICAL APPLICATION Digital Camera PDA Portable EquipmentGENERAL DESCRIPTION
PIN ASSIGNMENT SOP8 MSOP8 TSSOP8 PINDESCRIPTION
Name FB SCP VCC BR/CTL OUT GND OSC COMP No. 1 2 3 4 5 6 7 8 I/ODESCRIPTION
I Error amplifier inverting input pin I Connected a capacitor Soft start and SCP function pin P IC Power supply I Output current setting and control pin O Totem-pole output P IC ground I Capacitor and resistor connected for the frequency of oscillation O Error amplifier compensation output 1/14 Rev1.3 Liteon Semiconductor Corporation LSP3601 Step-Up DC/DC Controller FUNCTIONAL BLOCK DIAGRAM 37 Reference voltage supply 0.6V0.1V- 1.25V 1 36kΩ - + Error Amp.