TDA7278

TDA7278 HIGH-EFFICIENCY CD ACTUATOR DRIVER WIDE OPERATIVE SUPPLY RANGE (1.6 to 5V) LOW VOLTAGE OPERATION CAPABILITY 4 LOAD DRIVING VOLTAGES PWM REGULATED (STEP DOWN FROM BATTERY) LOW ON RESISTANCE H BRIDGES (2 x 1.6Ω MAX + 2 x 2.5Ω MAX) FOR: – FOCUS AND TRACKING ACTUATORS – SLEDGE AND SPINDLE MOTORS SYNCHRONIZABLE SAWTOOTH OSCILLATOR CONFIGURABLE DC/DC CONVERTER FOR ADJUSTABLE MAIN POWER SUPPLY, WITH LOW ON RESISTANCE (0.4Ω MAX) SWITCH GENERAL ENABLE INPUT ADJUSTABLE WATCH DOG AND DELAYED POWER ON RESET FUNCTIONS PQFP44 ADJUSTABLE COMPARATORS FOR BATTERY LOW AND BATTERY EMPTY DETECTION PIN CONNECTION H OUT 2B H OUT 4B 34 33 32 31 30 29 28 27 26 25 24 23 12 SSCAP 13 INP 14 IRC 15 VCPU 16 OUT1 17 OUT2 18 VBG 19 RESET 20 CRES 21 WDINP 22 STCAP H IN 4 H OUT 4A FLIN 4 VBAT FLIN 3 GND H OUT 3A H IN 3 H OUT 3B ENABLE SYNC ERROR 1 ERROR 2 ERROR 4 36 ERROR 3 35 VREF(2) 38 VREF(1) 37 BLOW 40 VCON 39 44 H IN 2 H OUT 2A FLIN 2 VBAT FLIN 1 GND H OUT 1A H IN 1 H OUT 1B OUT VHIGH 1 2 3 4 5 6 7 8 9 10 11 43 42 41 BEMP D94AU112A March 1997 1/15 TDA7278 ABSOLUTE MAXIMUM RATINGS (25°C) Pin Name HIN 1, HIN 2, HIN 3, HIN 4 HOUT 1A, HOUT 2A, HOUT 3A, HOUT 4A, HOUT 1B, HOUT 2B, HOUT 3B, HOUT 4B FLIN 1, FLIN 2, FLIN 3, FLIN 4 ERROR 1, ERROR 2, ERROR 3, ERROR 4, VBAT VREF 1, V REF 2 BLOW, BEMP, VCON OUT, VHIGH OUT 2 OUT 1 SSCAP, IRC, INP VCPU VBG, RESET, CRES, WDINP, STCAP, SYNC EN Min -0.4 -0.4 -0.4 -0.4 -0.4 -0.4 -0.4 -0.4 -0.4 -0.4 -0.4 -0.4 -0.4 -0.4 Max 8 8 10 7 8 7 7 16 8 16 7 7 7 8...