Ordering number : ENA1878 SS30 Bi-CMOS IC For Notebook PC SS30 Electrical Characteristics Ta = 25C, V = 5V, unless specifically noted CC Ratings Parameter Symbol Conditions Unit min typ max Power supply current 1 I 1 PWM pin = V 1.8 2.5 mA CC CC Power supply current 2 I 2 PWM pin = 0V 20 50 A CC Charge pump output Output voltage VG 9.8 V Output block Source Ron (H) I = 0.5A, VG = 9.5V 0.6 1.0 O Sink Ron (L) I = 0.5A, V = 5.0V 0.6 1.0 O CC Source + sink Ron (H+L) I = 0.5A, V = 5V, VG = 9.5V 1.2 2 O CC Startup oscillation pin OSC pin charge current I 1 -2.5 A OSC OSC pin discharge current I 2 2.5 A OSC PWM input pin PWM pin high-level input voltage V H V 0.8 V V PWM CC CC PWM pin low-level input voltage V L 0 V 0.2 V PWM CC PWM pin current I M PWM pin = 0V -50 A PW PWM pin input frequency f 20 25 50 kHz PWM FG, 1/2FG, RD output pin FG, 1/2FG, RD output pin V When I = 0.5mA 0.1 0.2 V FG O low-level voltage V 1/2FG V RD Current limiter circuit Limiter voltage V f RF = 1 0.2250.25 0.275 V R Constraint protection circuit Constraint protection detection time R1 0.5 1.0 s DT Constraint protection release time R2 5 s DT Thermal protection circuit Thermal protection circuit operating TSD Design target * 150 180 C temperature Temperature hysteresis width TSD Design target 30 C * : Design target value and no measurement is made. The thermal protection circuit is incorporated to protect the IC from burnout or thermal destruction. Since it operates outside the IC s guaranteed operating range, the customer s thermal design should be performed so that the thermal protection circuit will not be activated when the fan is running under normal operating conditions. Package Dimensions unit : mm (typ) 3368 Pd max - Ta 1.2 3 TOP VIEW SIDE VIEW BOTTOM VIEW Specified circuit board : 40.050.00.8mm glass epoxy board 4 layer 1.05 (0.125) 3.0 1.0 (C0.17) 0.8 0.6 20 0.46 2 1 0.4 0.25 (0.5) 0.5 SIDE VIEW 0.2 0 -30 -20 0 20 25 40 60 80 95100 Ambient temperature, Ta - C SANYO : VCT20(3.0X3.0) No.A1878-2/7 (0.035) 3.0 0.8 0.4 (0.13) Allowable power dissipation, Pd max - W