TDA7275A

TDA7275A MOTOR SPEED REGULATOR . . . . . . . EXCELLENT VERSATILITY IN USE HIGH OUTPUT CURRENT (up to 1.5 A) LOW QUIESCENT CURRENT LOW REFERENCE VOLTAGE (1.32 V) EXCELLENT PARAMETERS STABILITY VERSUS AMBIENT TEMPERATURE START/STOP FUNCTION (TTL levels) DUMP PROTECTION MINIDIP (4 + 4 ) DESCRIPTION The TDA7275A is a linear integrated circuit in minidip plastic package. It is intended for use as speed regulator for DC motors of record players, tape and cassette recorders. The dump protectionmake it particularlysuitablefor car radio applications. ORDERING NUMBER : TDA7275A PIN CONNECTION (top view) May 1997 1/9 TDA7275A SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol VS VS IM Top Ptot Supply Voltage Peak Supply Voltage (for 50ms) Maximum Output Current Operating Temperature Range Power Dissipation at Tamb = 70°C at Tpins = 70°C Parameter Value 19 45 1.5 –30 to +85 1 4 Unit V V A °C W W THERMAL DATA Symbol R th j-amb Rth j-pins Parameter Thermal Resistance Junction-ambient Max. Thermal Resistance Junction -pins Value 80 20 Max. Unit °C/W °C/W 2/7 TDA7275A ELECTRICAL CHARACTERISTICS (Refer to test circuit, VS = 12V, Tamb = 25°C unless otherwise specified, refer to test circuit) Symbol VS Vref Iq + Id Id Ims V4 K = IM/IT ∆ K ⁄ ∆ VS K ∆K ⁄ ∆IM K ∆K ⁄ ∆T K ∆Vref ⁄ ∆VS Vref ∆Vref ⁄ ∆IM Vref ∆Vref ⁄ ∆T Vref V2 I2 V2 I2 Line Regulation Load Regulation Temperature Coefficient Motor ”Stop” (Acc. Following data or grounded) Motor ”Stop” Motor ”Run” (Acc. Following data or open)...