SSPP3344006633AA 11..55AA BBuucckk//BBoooosstt//IInnvveerrttiinngg DDCC--DDCC RReegguullaattoorr February 2014 Rev. 2.1.1 GENERAL DESCRIPTION APPLICATIONS The SP34063A is a monolithic switching Battery Charger Circuit regulator control circuit containing the primary NICs/Switches/Hubs functions required for DC-DC converters. ADSL Modems This device consists of an internal temperature Negative Voltage Power Supply compensated reference, voltage comparator, controlled duty cycle oscillator with active current limit circuit, driver and high current FEATURES output switch. This device was specifically designed to be used in buck, boost, and Supply Voltage: 3V - 36V Voltage-Inverting applications with a minimum Current Limiting number of external components. Output Switch Current to 1.5A The SP34063A is available in the 8 pin NSOIC package. Adjustable Output Voltage Operation frequency up to 180KHz Low Quiescent Current Precision 2% Reference Available in 8 pin NSOIC Package TYPICAL APPLICATION DIAGRAM Fig. 1: SP34063A Application Diagram Exar Corporation www.exar.com 48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 Fax. +1 510 668-7001 SSPP3344006633AA 11..55AA BBuucckk//BBoooosstt//IInnvveerrttiinngg DDCC--DDCC RReegguullaattoorr ABSOLUTE MAXIMUM RATINGS OPERATING RATINGS Input Voltage Range V ................................ 3.0V to 36V These are stress ratings only and functional operation of IN the device at these ratings or any other above those Power Dissipation (T =25C - NSOIC) ..................780mW A indicated in the operation sections of the specifications Junction Temperature Range .................... -40C to 150C below is not implied. Exposure to absolute maximum Thermal Resistance .....................................160C/W JA rating conditions for extended periods of time may affect reliability. Power Supply Voltage V ........................................ 40V CC Comparator Input Voltage ........................... -0.3V to 40V Switch Collector Voltage .......................................... 40V Switch Emitter Voltage (V =40V)........................... 40V PIN1 Switch Collector to Emitter Voltage ........................... 40V Driver Collector Voltage........................................... 40V Driver Collector Current (Note 2) .......................... 100mA Switch Current ...................................................... 1.5A Storage Temperature .............................. -65C to 150C ESD Rating (HBM - Human Body Model) .................... 2kV ELECTRICAL SPECIFICATIONS Specifications with standard type are for an Operating Temperature of T = 25C only. Minimum and Maximum limits are A guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at T = A 25C, and are provided for reference purposes only. Unless otherwise indicated, V = 5.0V, T = 40C to 85C. CC A Parameter Min. Typ. Max. Units Conditions Oscillator Frequency F 30 38 45 KHz V = 0V, CT = 1.0nF, T = 25C OSC PIN5 A Charge Current I 30 38 45 A V = 5.0V to 36V, T = 25C CHG CC A Discharge Current I 180 240 290 A V = 5.0V to 36V, T = 25C DISCHG CC A Discharge to Charge Current 5.2 6.5 7.5 Pin 7 to V , T = 25C CC A Ration I /I DISCHG CHG Current Limit Sense Voltage 250 300 350 mV I = I , T = 25C DISCHG CHG A V IPK(sense) Output Switch (Note 1) Saturation Voltage, 1.0 1.3 V I =1A, pin1,8 connected SW Darlington Connection V CE(sat) I =1A, R pin8 = 82ohms to V , SW CC Saturation Voltage (note 2) 0.45 0.7 V forced =20 DC Current Gain 50 75 I =1A, V = 5V, T = 25C SW CE A Collector Off-State Current 0.01 100 A V =36V CE Comparator 1.225 1.250 1.275 V T = 25C A Threshold Voltage V TH 1.210 1.250 1.290 V T = -40C to 85C A Threshold Voltage Line 1.4 5 mV V = 3.0V to 36V CC Regulation REGLINE Input Bias Current I -20 -400 nA V = 0V IB IN Total Device V =5.0V to 36V, CT=1nF, pin 7 = V CC CC Supply Current ICC 4 mA Vpin5 >V TH Note 1: Low duty cycle pulse techniques are used during the test program to maintain junction temperature as close to ambient temperature as possible. Note 2: If the output switch is driven into hard saturation (non-Darlington configuration) at low switch currents ( 300mA) and high driver currents ( 30mA), it may take up to 2.0s for it to come out of saturation. This condition will shorten the 2014 Exar Corporation 2/9 Rev. 2.1.1