Ordering number : EN6088B LB1976 Monolithic Digital IC For Fan Motor LB1976 Allowable Operating Ranges at Ta = 25C Parameter Symbol Conditions Ratings Unit Supply voltage range V 4.5 to 6.7 V CC V 20 to 56 V M Input current range I V pin 1 to 5 mA REG REG FG pin applied voltage V 0 to V V FG CC FG pin output current I 0 to 10 mA FG Electrical Characteristics at Ta = 25C, V = 5V, V = 45V CC M Ratings Parameter Symbol Conditions Unit min typ max Supply current I 10 14 18mA CC Output Block Output saturation voltage Vsat1(L) I = 1.0A, V(sink) 1.1 1.4V O O O Vsat1(H) I = 1.0A, V(source) 0.9 1.3V O O O Vsat1 I = 1.0A, V (sink) + V(source) 2.0 2.6V O O O O Vsat2(L) I = 2.0A, V(sink) 1.4 1.8V O O O Vsat2(H) I = 2.0A, V(source) 1.2 1.7V O O O Vsat2 I = 2.0A, V (sink) + V(source) 2.6 3.4V O O O O Output leak current ILeak(L) 100 A O ILeak(H) -100 A O Upper side diode forward voltage V1 I = 1.0A 1.2 1.6 V FH O V2 I = 2.0A 2.1 2.6 V FH O Hall Amplifier Input bias current I -4 -1 A HB Common-mode input voltage range V 1.5 V -1.5 V ICM CC Hall input sensitivity VH 60 mVp-p IN Hysteresis width V(HA) 23 32 39 mV IN Input voltage (low to high) V 6 16 25mV SLH Input voltage (high to low) V -25 -16 -6mV SHL FG Pin (speed pulse output) Output low-level voltage V I = 5mA 0.5 V FGL FG Pull-up resistor value R 7.5 10 12.5k FG Current Limiter Limiter V 0.45 0.50 0.55V RF Thermal Shutdown Thermal shutdown operating TSD Design target Value (junction temperature) 150 180 C temperature Hysteresis width TSD Design target Value (junction temperature) 40 C Low-Voltage Protection Operating voltage V 3.5 3.8 4.1 V LVSD Non-operating voltage V (OFF) 4.3 4.5 V LVSD Hysteresis width V 0.4 0.5 0.6 V LVSD PWM Oscillator Output high-level voltage V (OSC) 2.95 3.10 3.25 V OH Output low-level voltage V(OSC) 1.38 1.45 1.59 V OL Amplitude V 1.50 1.65 1.71Vp-p OSC Oscillator frequency f C = 2200pF 19.6 23.0 27.6 kHz OSC Charge current I -110 -94 -83 A CHG Discharge resistance R 1.6 2.1 2.6 k DCHG V Pin REG Pin voltage V I = 1.5mA 6.6 7.0 7.2 V REG REG Continued on next page. No.6088-2/10