TS34063 Dc to Dc Converter Controller SOP-8 DIP-8 Pin Definition: 1. SC 5. Comp 2. SE 6. Vcc 3. CT 7. Ipk 4. Gnd 8. Vdriver General Description TS34063 is a monolithic switching regulator and subsystem intended for use as DC to DC converter. It contains an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active peak current limit circuit, drive and a high current output switch. The TS34063 is specifically designed to be incorporated in step-up, step-down and voltage inverting converter applications. TS34063 is offered in SOP-8 and DIP-8 package Features Pin Description Power forward control circuit Name Description Operating voltage from 3V to 40V SC Switch Collector Low standby current SE Switch Emitter Current limit adjustable CT Timing Capacitor GND Ground Output switch current up to 1.5A COMP. Comparator Inverting Input Variable oscillator frequency up to 100kHz(max.) V V Collector CC CC Output voltage adjustable I IPK Sense PK V Driver DRIVER Applications Ordering Information Charger Part No. Package Packing xD-ROM, xDSL products TS34063CD C3 DIP-8 50pcs / Tube DC to DC converter TS34063CS RL SOP-8 2.5Kpcs / 13 Reel Absolute Maximum Rating Parameter Symbol Maximum Unit Supply Voltage V 40 V CC Comparator Input Voltage Range V - 0.3 ~ 40 V FB Switch Collector Output Voltage V 40 V C(SW) Switch Emitter Voltage V 40 V E(SW) Switch Collector to Emitter Voltage V 40 V CE(SW) Driver Collector Voltage V 40 V C(DRIVER) Driver Collector Current (note 1) I 100 mA C(DRIVER) Output Switching Current I 1.5 A SW DIP-8 1.0 Power Dissipation P W D SOP-8 0.5 o Operating Ambient Temperature Range T -40 ~ +85 C OPR o Junction Temperature Range T 0 ~ +125 C J o Storage Temperature Range T -65 ~ +150 C STG Note: Maximum package power dissipation limits must be observed 1/10 Version: B13 TS34063 Dc to Dc Converter Controller o Electrical Characteristics (V =5V, Ta =25 C unless otherwise noted.) CC Parameter Symbol Test Conditions Min Typ Max Unit Oscillator (OSC) F Frequency OSC C = 1nF, Vpin5= 0V 24 33 42 KHz T I Charge Current CHARGE V = 5V ~ 40V 24 30 42 uA CC Discharge Current I V = 5V ~ 40V 140 200 260 uA DISCHARGE CC I DISCHARGE Discharge to Charge current ratio Pin7 to V 5.2 6.5 7.5 -- CC / I CHARGE Current Limit Sense Voltage V I = I 250 -- 350 mV IPK(SENSE) DISCHARGE CHARGE Output switch (note1) Saturation Voltage V I = 1A, pin1, 8 connected -- 1.0 1.3 V CE(SAT) SW Saturation Voltage V I = 1A, Id=50mA -- 0.45 0.7 V CE(SAT) SW DC current gain H I = 1A, V = 0.5V 50 75 -- -- FE SW CE Collector off-state current I V = 40V C(OFF) CE -- 0.01 100 uA Comparator Threshold Voltage V 1.225 1.25 1.275 V REF Line regulation REG V = 3V ~ 40V -- -- 6 mV LINE CC Total device V = 5V ~ 40V, C = 1nF, CC T pin7= V , pin5> V , CC TH Supply Current I -- 3 5 mA CC pin2=Gnd, remaining pins open Notes1: Low duty cycle pulse techniques are used during test 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 2uS for it to come out of saturation. This condition will shorten the off time at frequencies >= 30KHz, and is magnified at high temperature. This condition does not occur with a Darlington configuration, since the output switch cannot saturate. If a non- darlington configuration is used, the following output drive condition is recommended: Forced Bata of output switch: Ic output / (Ic driver 7mA*) >= 10 * The 100ohm resistor in the emitter of the driver divide requires about 7mA before the output switch conducts. Block Diagram 2/10 Version: B13