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TDA7278 Arkusz danych(PDF) 4 Page - STMicroelectronics |
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TDA7278 Arkusz danych(HTML) 4 Page - STMicroelectronics |
4 / 15 page ELECTRICAL CHARACTERISTICS (Tamb =25 °C, VBAT = 1.6V unless otherwise specified) Symbol Parameter Test Condition Min. Typ. Max. Unit VBAT Power Supply (Tamb =25 to 70 °C) Config. in fig. 3a: VCPU <4V Config. in fig. 3a: VCPU >4V Config. in fig. 3b Config. in fig. 3c Stand-by condition Config. in fig 3a 1.6 1.6 VCPU +0.3 1.6 VCPU 4 4 4 4 V V V V V Power Supply (Tamb =25 to 60°C) Config. in fig. 3a Config. in fig. 3b Config. in fig. 3c Stand-by condition Config. in fig 3a 1.6 VCPU +0.3 1.6 VCPU 5 5 5.5 V V V V Current Consumption from VCPU (1) VCPU =5V 5 mA Current Consumption from VBAT (3) 1.5 mA Leakage Current in stand- by condition VBAT =5V 20 µA VHIGH VCPU (adj) Output Voltages VBAT +4 2.4 VBAT +7 VBAT +12 5 V V RON ofDC/DC Converter Switch I = 1A 0.25 0.4 Ω Max Output Current from VCPU VCPU < 4.5V Config. fig 3a 150 mA Voltage Ripple on VCPU Oscillator - free freq. - sync. freq - ∆ free freq. STCAP = 470pF . VBAT = 1.6 to 5V 80 200 180 20 KHz KHz KHz H_bridge - Ron, actuators (CH 1,3) - Ron, motors (CH 2,4) I = 100mA 1.0 1.6 1.6 2.5 Ω Ω PWM Circuit - Ron, actuators - Ron, motors I = 100mA 0.5 0.8 0.8 1.25 Ω Ω VBG Reference Voltage 1.22 1.28 1.34 V Load Regulation ILOAD =-10 to+10 µA; -30 30 mV Line Regulation VBAT = 1.6 to 5V 30 mV AV Bridge gain From Error to HIN 2.8 3.6 4.5 K Reset Time Coefficient note 2 7.4 11 17.2 msec/ µF ZIN Error Impedance Inputs 26 40 k Ω VREF2 Load Regulation ILOAD =-1 to+1mA –30 30 mV VREF1 Impedance 750 k Ω WINDIP Impedance 30 k Ω BEMP & BLOW intervention threshold 0.55 0.65 0.75 V RESET Voltage Saturation ILOAD =-100 µA 200 mV VCON Voltage Saturation ILOAD =-100 µA ILOAD =100 µAVCPU-200 200 mV mV (1): all the 4 PWM outputs switched off. (2) TRESET = width of the Reset pulse on pin 19 = K ⋅ C, where C is the capacitance on pin 20 (CRES). To avoid reset, the frequency of watch dog pulses must be greater than (3 ⋅ TRESET)-1 (3) All the 4 PWM output switched OFF, auxiliary and main DC/DC converters polarized but not switching TDA7278 4/15 |
Podobny numer części - TDA7278 |
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Podobny opis - TDA7278 |
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