●SI-3000LU Series SI-3000LU Series Surface-Mount, Low Current Consumption, Low Dropout Voltage Dropper Type ■Features • • • • • • Compact surface-mount package (SOT-89-5) Output current: 250 mA Low current consumption lq (OFF) ≤ 1µA (VC = 0 V) Low dropout voltage: VDIF≤0.5 V (at IO = 250 mA) 5 types of output voltages (Adj, 1.8 V, 2.5 V, 3.3 V, 5.0 V) available Built-in dropping type overcurrent, thermal protection circuits ■Applications • Auxiliary power supply for PC • Battery-driven electronic equipment ■Absolute Maximum Ratings Parameter (Ta=25°C) Symbol Ratings Unit DC Input Voltage VIN 18 V DC Output Current IO 250 mA Power Dissipation PD*1 0.75 W Junction Temperature Tj*2 –40 to +135 °C Storage Temperature Top*2 –40 to +125 °C Thermal Resistance (Junction to Ambient Air) θ 146 °C/W j-a*1 *1: When mounted on glass-epoxy board 40 × 40 mm (copper laminate area 2%) *2: Thermal protection circuits may operate if the junction temperature exceeds 135°C ■Recommended Operating Conditions Parameter Ratings Symbol min. Unit max. Input Voltage VIN *2, *3 VO+2*1 V DC Output Current IO 0 250 mA Ambient Operating Temperature Top –20 85 °C *1: VIN (max) and IO (max) are restricted by the relationship PD = (VIN - VO) × IO. Calculate these values referring to the reference data. *2: Refer to the dropout voltage section. *3: For the SI-3012LU, set the input voltage to at least 2.4 V, and secure the minimum voltage as explained in Setting DC Input Voltage, Dropper Type Application Note. ●SI-3000LU Series ■Electrical Characteristics (Ta=25°C, VC=2V unless otherwise specified) Ratings Parameter Symbol SI-3012LU min. VO Output Voltage typ. max. min. (Under development) typ. max. min. Conditions VIN=6V, IO=10mA 0.3 0.5 0.3 0.3 0.3 0.5 0.5 10 15 IO=100mA(VO=3.3V) IO=100mA VIN=VO+1 to VO+5V, IO=10mA( VO=3.3V) IO=250mA 10 VIN=2.5 to 5V, IO=10mA 20 Conditions VIN=VO+1V, IO=1 to 250mA( VO=3.3V) ∆VO/∆Ta 10 VIN=3.3 to 5V, IO=10mA 20 ±0.2 55 150 Overcurrent Protection IS1 Starting Current*1 VIN=VO+1V, IO=0mA VC=2V, R2=100kΩ VIN=VO+1V, VC=0V 260 Conditions 150 VIN=3.3V, IO=0mA VC=2V VIN=3.3V, IO=0mA, VC=2V 1 1 VIN=3.3V, VC=0V VIN=3.3V, VC=0V 260 VIN=VO+1V 260 VIN=3.3V VC, IH Control Voltage (Output OFF)*2 VC, IL 0.8 0.8 IC, IH 40 40 Control Current (Output ON) 2.0 2.0 55 55 0 –5 0 –5 Conditions dB VIN=6V, f=100 to 120HZ 150 VIN=5V, IO=0mA, VC=2V 150 VIN=6V, IO=0mA, VC=2V µA 1 µA 1 VIN=5V, VC=0V VIN=6V, VC=0V 260 VIN=5V mA VIN=6V 2.0 2.0 0 0.5 0.5 V 0.8 0.8 0.8 40 40 40 µA –5 µA 0.5 V –5 0 –5 0 VC=0V VO mV mV/°C VC=2V IC, IL Output OFF Voltage ±0.3 260 2.0 Conditions Control Current (Output OFF) ±0.3 VIN=3.3V Control Voltage (Output ON)*2 Pin VIN=6V, IO=0 to 250mA 55 150 1 Conditions VIN=5V, IO=0 to 250mA ±0.25 55 Iq(OFF) OFF Circuit Current 40 VIN=VO+1V, VIN=3.3V, f=100 to 120HZ VIN=3.3V, f=100 to 120HZ VIN=5V, f=100 to 120HZ f=100 to 120HZ( VO=3.3V) Iq Conditions 40 Tj=0 to 100°C RREJ Current VIN=6 to 10V, IO=10mA mV VIN=3.3V, IO=1 to 250mA VIN=3.3V, IO=0 to 250mA ±0.3 Conditions VIN=4.5 to 8V, IO=10mA 40 Conditions Ripple Rejection V V 0.5 IO=250mA(VO=3.3V) ∆VLOAD Load Regulation VC 0.5 Unit typ. max. VIN=5V, IO=10mA 10 Conditions Quiescent Circuit typ. max. min. (Under development) VIN=3.3V, IO=10mA ∆VLINE cient of Output Voltage typ. max. min. SI-3050LU VIN=3.3V, IO=10mA 0.5 Temperature Coeffi- SI-3033LU VIN=VO+1V, IO=10mA VDIF Conditions Line Regulation (Under SI-3025LU development) 1.210 1.250 1.290 1.764 1.800 1.836 2.450 2.500 2.550 3.234 3.300 3.366 4.900 5.000 5.100 Conditions Dropout Voltage SI-3018LU 0.5 0.5 *1: Is1 is specified as the 5% drop point of output voltage VO on the condition that VIN = 3.3 V (5 V for SI-3033LU, 6 V for SI-3050LU), and IO = 10 mA. *2: Output is OFF when the output control pin (VC pin) is open. Each input level is equivalent to that for LS-TTL. Therefore, the device can be driven directly by an LS-TTL circuit. ■External Dimensions (Unit : mm) ±0.05 4.5 5) w e 4.2±0.05 1.5±0.05 1.5±0.05 4.3±0.05 2.5±0.05 4.7±0.05 q 1.5±0.05 4.2±0.05 0.1±0.05 ±0.0 .0 ( φ1 0.4±0.03 0.90±0.1 4.2±0.05 r 0.90±0.1 4.2±0.05 0.4±0.05 0.40 1.6±0.05 4.2±0.05 t Pin Arrangement q ADJ w GND e VC r VIN t VO Plastic Mold Package Type Flammability: UL94V-0 Weight: Approx. 0.05g ●SI-3000LU Series ■Block Diagram SI-3012LU SI-3018LU, SI-3025LU, SI-3033LU, SI-3050LU VIN 4 5 VO VIN 4 5 VO VC 3 1 Adj 3 1 Adj TSD TSD + – + – 2 GND REF 2 GND REF ■Standard External Circuit SI-3018LU, SI-3025LU, SI-3033LU, SI-3050LU VO 5 VC 3 VDJ 1 + 2 CIN Load + VIN 4 CO GND CO : Output capacitor (10µF or larger) The SI-3000LU series can be operated on the circuit even if a low ESR ceramic capacitor is used as the output capacitor. CIN : Input capacitor (0.1 to 10 µF) This capacitor is required in the case of an inductive input line or long wiring. Settings for SI-3012LU output voltage (recommended voltage: 1.5 V to 15 V) R1 and R2: Resistors for output setting The output voltage can be set by connecting R1 and R2 as shown in the diagram on the left. R2: 100 kΩ is recommended R1=(V O–V ADJ)/(V ADJ/R2) • SI-3012LU + CIN 4 5 VO R1 3 1 2 VIN + Load VIN R2 GND CO VC ■Reference Data Copper Laminate Area vs Power Dissipation Tj=100°C PWB size 40×40 1 • A monolithic IC is mounted. The inner frame stage is connected to the GND pin (pin 2). Therefore, enlarging the copper laminate area leading to the GND pin achieves a heat radiation effect. • How to calculate the junction temperature Measure the temperature (TC) of the GND pin (pin 2) lead section using a thermistor, etc. Substitute this value in the following formula and calculate the junction temperature. T j=P D ×θ j–c+Tc ( θ j–c=5 ° C/W) Power Dissipation PD (W) Ta=25°C 0.9 Ta=40°C 0.8 Ta=60°C Ta=85°C 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 10 100 Copper Laminate Area (mm2) 1000 ●SI-3000LU Series ■Typical Characteristics of SI-3033LU (Ta=25°C) IO vs. VDIF Characteristics Output Voltage Characteristics 0.6 Line Regulation 5 3.34 lO=0mA 3.32 0.4 0.3 0.2 lO=0mA 3 2 lO=250mA 1 0.1 50 100 150 200 250 3.30 3.28 lO=250mA 3.26 3.24 3.22 300 0 2 Output Current IO (mA) 4 6 8 0 10 Input Voltage VIN (V) Load Regulation Output ON/OFF Control 3.34 3.32 Output Voltage VO (V) VIN=3.8V 3.30 8V 3.28 5V 6V 3.26 3.24 4 6 8 10 Input Voltage VIN (V) Overcurrent Protection Characteristics 5 5 4 4 Output Voltage VO (V) 0 Dropout Voltage VDIF (V) Output Voltage VO (V) 4 Output Voltage VO (V) Dropout Voltage VDIF (V) 0.5 3 VIN=5V 2 1 3 VIN=3.8V 2 5V 1 8, 10V 3.22 0 50 100 150 200 250 Output Current IO (mA) 300 0 0 0.5 1.0 1.5 2.0 2.5 Output Control Voltage VC (V) 3.0 0 0 100 200 300 Output Current IO (mA) 400