High-side Power Switch ICs [Surface-mount 2-circuit, current monitor output function] SPF5017 External Dimensions (unit: mm) Features ● Internal current sense resistor ● High accuracy current monitor output (sample & hold function) ● Built-in overcurrent and thermal protection circuits 14.74±0.2 +0.1 13.04±0.2 1.0 –0.05 11 Ratings Unit Power supply voltage 1 VB 0 to 32 V Power supply voltage 2 Vcc –0.5 to 7.0 V Power supply voltage 3 VB 0 to 40 V Current sensing voltage Output terminal voltage Input terminal voltage b (Ta=25ºC) Symbol Vsense+ –0.8 to 6 Vsense– Vsense+±Io • Rsense V VOUT –2 to 32 V –0.5 to 7.0 V VPWM Conditions 1 10 +0.15 1.27±0.25 0.4 –0.05 2.5±0.2 Parameter 2.0±0.2 Absolute Maximum Ratings 7.5±0.2 a 10.5±0.3 20 Fin thickness VB terminal, t = 1 min +0.15 0.25–0.05 a) Part No. b) Lot No. VHold Output current IOUT 2.0 A Power dissipation PD 2.4 to 5.0 W Storage temperature Tstg –40 to +150 °C Channel temperature Tch 150 °C Block Diagram (for one channel) Vcc Depends on surface-mount board pattern VB 17 clamp Parameter Symbol (VB=14V, Ta=25ºC unless otherwise specified) – One circuit equivalent typ TSD OCP Operating power supply voltage 1 VB min VB Sense+ 70kΩ max Unit Conditions 18 CMOS Logic Hold Operating power supply voltage 2 VCC Quiescent circuit current 1 Iqvb Quiescent circuit current 2 PWM terminal input voltage 14 lamp Hold terminal input voltage Output ON resistance Current sensing resistance 70 Vcc = 5V, VPWM = 0V, One circuit equivalent 0.2 mA Vcc = 5V, VPWM = 0V V 110 Ttsd 150 Io 0.2 Vcc = 5V, VPWM = 5V, Active H * 3 Ω IOUT = 1A 0.21 Ω IOUT = 1A, Ta = 125°C 0.21 Ω IOUT = 1A 0.25 Ω IOUT = 1A, Ta = 125°C A *4 A *1 Io = 0A, Vcc = 5V 0.2 V 0.500 0.512 V Io = 0.2A, Vcc = 5V 1.219 1.250 1.281 V Io = 0.5A, Vcc = 5V, Ta = –40 to 140°C 2.925 3.000 3.075 V 5 mA Io = 1A, Vcc = 5V, VSH = 0V mA Io = 1A, Vcc = 5V, VSH = 5V 15 µs t off 15 µs tr 100 µs tf t shd Hold time after inputting hold t shh S/H settling time VCC 500 Controlling microcomputer CPU 2 3 5 1kΩ 0.01 µF VB 17 Sense+ Hold Sense – 50 µs 650 µs 1 µs 2 µs µs VB = 11V, Vcc = 5V, Io = 1.2A, C1 = 0.033µF 80 µs VB = 11V, Vcc = 5V, Io = 1.2A, C1 = 0.033µF, Ta = 125°C t stt 20 D1 5.1 kΩ LG C 6 4 D2 Timing Chart Ordinary operation (auto hold) Thermal protection Ordinary operation (external hold) VPWM Icoil *1 500 to 650 usec Io = 0.5A, Vcc = 5V, 70 18 * Use a Schottky Di for D2 when the Sense+ terminal is lower than the abs. max. rated voltage (–0.8V) VS/H C1 = 0.033µF 19 S/H Vout Io = 0.5A, Vcc = 5V OUT SFP5017 PWM C1 Io = 1.2A, Vcc = 5V, Ta = –40 to 140°C Note: * 1: Accuracy warranty range for current monitor output * 2: Equivalent errors are not included in current monitor output accuracy. * 3: With built-in pull-down resistance (70kΩ typ) * 4: Self-excitation and oscillation type * 5: Accuracy of current monitor output is affected by the materials of the hold capacitor (C1). The capacitor C1 must be of low dielectric absorption and have good bias and leak current characteristics. 46 LG Standard Connection Diagram °C 1.2 –6 Current monitor output delay time 6 C Vcc = 5V µA t on t sh 4 Vcc = 5V, VPWM = 5V, Active H * 3 0.488 ISH Current monitor output hold time Vcc = 5V 110 Rsense Operation circuit for current monitor output Output fall time *2 0.14 RDSon Thermal shutdown operating temperature Output rise time Sense– S/H 5 1 70 3.0 Output transfer time 20 1.5 IHoldH VSH µA V Is Current monitor output current mA + – S/H 3.5 Overcurrent protection starting current Current monitor output voltage 7.2 V VHoldL Hold terminal input current V 1.5 IPWMH VHoldH 16 *1 70kΩ Sense R 3.5 VPWML PWM terminal input current Minimum operation of OUT terminal. 5.0 Iqvcc VPWMH V 6 10 OUT 19 PWM 3 Min. operating power supply voltage S Sense MOS 2 Ratings min D Charge Pump OSC Electrical Characteristics SFP5017 1 *2 *1 500 to 650 usec VHold Truth table VPWM L H VOUT L H Overcurrent protection Ordinary operation (auto hold)