1-1-1 Linear Regulator ICs SI-3000ZD Series Surface-Mount, Low Dropout Voltage Linear Regulator ICs ■Features ■Absolute Maximum Ratings • Compact surface-mount package (TO263-5) Parameter (Ta=25°C) Symbol Ratings Unit VIN*1 10 V Output Control Terminal Voltage VC 6 V DC Output Current IO*1 3.0 A • Low circuit current at output OFF: Iq (OFF) ≤ 1µA Power Dissipation PD*3 3 W • Built-in overcurrent and thermal protection circuits Junction Temperature Tj –30 to +125 °C Operating Ambient Temperature Top –30 to +85 °C Storage Temperature Tstg –40 to +125 °C Thermal Resistance (Junction to Ambient Air) θ j-a 33.3 °C/W Thermal Resistance (Junction to Case) θ j-c 3 °C/W DC Input Voltage • Output current: 3.0A • Low dropout voltage: VDIF ≤ 0.6V (at IO = 3.0A) ■Applications • Secondary stabilized power supply (local power supply) ■Recommended Operating Conditions Parameter Symbol Input Voltage Ratings *2 VIN Output Current Unit to 6*1 IO 0 to 3 A Top (a) –20 to +85 °C Operating Junction Temperature Top (j) –20 to +100 °C Output Voltage Variable Range VOADJ 1.2 to 5 V Operating Ambient Temperature Remarks V Only for SI-3011ZD. Refer to the block diagram. *1: VIN (max) and IO (max) are restricted by the relation PD = (VIN - VO) × IO. *2: Set the input voltage to 2.4V or higher when setting the output voltage to 2.0V or lower (SI-3011ZD). *3: When mounted on glass-epoxy board of 40 × 40mm (copper laminate area 100%). ■Electrical Characteristics (Ta=25°C, VC=2V unless otherwise specified) Ratings Parameter Symbol SI-3011ZD (Variable type) min. Output Voltage (Reference Voltage VADJ for SI-3011ZD) min. 1.100 1.122 3.234 VIN=VO+1V, IO=10mA VDIF 1 Conditions RREJ Conditions *4 VC, IH Control Voltage (Output OFF)*3 VC, IL VC Control Current(Output ON) Terminal Control Current(Output OFF) VIN=5V, VC=0V ±0.3 ±0.3 Tj=0 to 100°C Tj=0 to 100°C 60 60 VIN=VO+1V, f=100 to 120HZ, IO=0.1A VIN=5V, f=100 to 120HZ, IO=0.1A 0.8 100 100 VC=2.7V –5 0 VC=0V VC=2.7V –5 0 VC=0V mV V mA µA A 2 0.8 mV dB VIN=5V 2 V mV/ °C 3.2 IC, IH IC, IL 1.5 1 VIN=VO+1V Conditions Conditions 1 VIN=5V, IO=0A, VC=2V 3.2 Conditions Control Voltage (Output ON)*3 1.5 VIN=VO+1V, VC=0V ∆VO/∆Ta IS1 0.6 IO=3A 1 Conditions Current*2 VIN=5V, IO=0 to 3A VIN=VO+1V, IO=0A, VC=2V Iq (OFF) Ripple Rejection 40 0.6 Iq Temperature Coefficient of Output Voltage 10 IO=3A (VO=2.5V) Conditions Circuit Current at Output OFF 3.366 VIN=4.5 to 5.5V, IO=10mA VIN=3.3V, IO=0 to 3A (VO=2.5V) Conditions Quiescent Circuit Current 3.300 40 Conditions Dropout Voltage max. VIN=5V, IO=10mA VIN=3.3 to 5V, IO=10mA (VO=2.5V) ∆VOLOAD Unit typ. 10 Conditions Load Regulation *1: *2: *3: *4: 1.078 Conditions max. ∆VOLINE Line Regulation Overcurrent Protection Starting VO (VADJ) SI-3033ZD typ. V µA µA Set the input voltage to 2.4V or higher when setting the output voltage to 2.0V or lower. IS1 is specified at the –5% drop point of output voltage VO under the condition of Output Voltage parameter. Output is OFF when the output control terminal (VC terminal) is open. Each input level is equivalent to LS-TTL level. Therefore, the device can be driven directly by LS-TTLs. These products cannot be used for the following applications because the built-in foldback-type overcurrent protection may cause errors during start-up stage. (1) Constant current load (2) Positive and negative power supply (3) Series-connected power supply (4) VO adjustment by raising ground voltage 26 ICs SI-3000ZD Series ■External Dimensions (TO263-5) (Unit : mm) ±0.2 10.0 (8.0) ±0.2 1.2 4.5 +0.10 1.3 –0.05 (2×R0.45) (6.8) (3°) ±0.3 Pin Assignment q VC w VIN e GND (Common to the rear side of product) r VO t Sense (ADJ for SI-3011ZD) ±0.1 ±0.2 (R0.3) ±0.2 4.9 2.54 ±0.3 2.0 2.4 (R0.3) (0.75) ±0.2 15.30 9.2± ±0.3 15.3 ±0.15 0.10 (3°) (3°) 4.9 ±0.10 0.88 ±0.2 (4.6) ±0.2 ±0.2 φ1.5 Dp: (4.4) ±0.2 3-R0.3 9.2 (15°) (1.75) (0.40) Case temperature measurement point 0~6° (0.5) ±0.1 ±0.1 0.8 ±0.25 ) (1.7 ±0.25 (1.7 ) 1 2 3 4 9.9 0.8 ±0.25 (1.7 ) ±0.25 (1.7 ) 5 ±0.2 (3°) (3°) Plastic Mold Package Type Flammability: UL94V-0 Product Mass: Approx. 1.48g 2-R0.3 10.0 0.1 ±0.02 ■Block Diagram SI-3011ZD VIN 2 4 * R3 Drive ON/ OFF 1 TSD OCP AMP1 5 - + + REF R1 + CIN VC CIN: Input capacitor (Approx. 10µF) CO: Output capacitor (47µF or larger) The output voltage may oscillate if a low ESR type capacitor (such as a ceramic capacitor) is used for the output capacitor in the SI-3000ZD Series. VO + ADJ CO - R2 + 3 GND SI-3033ZD VIN 2 4 R1, R2: Output voltage setting resistors The output voltage can be set by connecting R1 and R2 as shown at left. The recommended value for R2 is 10kΩ or 11kΩ. VO + 5 CIN VC ON/ OFF 1 TSD OCP AMP1 - + SENSE + REF + Drive R1= (VO–VADJ) / (VADJ/R2) *: Insert R3 in case of setting VO to VO ≤ 1.8V. The recommended value for R3 is 10kΩ. CO + 3 GND ■Reference Data Copper Laminate Area (on Glass-Epoxy Board) vs. Thermal Resistance (from Junction to Ambient Temperature) (Typical Value) Junction to Ambient Temperature Thermal Resistance θ j-a (°C/W) 55 • A higher heat radiation effect can be achieved by enlarging the copper laminate area connected to the inner frame to which a monolithic IC is mounted. • Obtaining the junction temperature Measure GND terminal temperature TC with a thermocouple, etc. Then substitute this value in the following formula to obtain the junction temperature. 50 When Using Glass-Epoxy Board of 40 × 40 mm 45 40 Tj=PD×θ j–C+TC PD= (VIN–VO)•IOUT 35 30 0 200 400 600 800 1000 1200 1400 1600 1800 Copper Laminate Area (mm2) ICs 27