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| 1-1-1 Linear Regulator ICs SI-3000KS Series Surface-Mount, Low Current Consumption, Low Dropout Voltage Linear Regulator ICs Features * Compact surface-mount package (SOP8) * Output current: 1.0 A * Compatible with low ESR capacitor * Low circuit current at output OFF Iq 350 A (IO = 0 A, VC = 2 V) * Low current consumption Iq (OFF) 1 A (VC = 0 V) * Low dropout voltage VDIF 0.6 V (IO = 1 A) * 3 types of output voltages (2.5 V, 3.3 V, and variable type) available * Output ON/OFF control terminal voltage compatible with LS-TTL * Built-in drooping-type-overcurrent and thermal protection circuits Absolute Maximum Ratings Parameter DC Input Voltage Output Control Terminal Voltage DC Output Current Power Dissipation Junction Temperature Storage Temperature Thermal Resistance (Junction to Ambient Air) Thermal resistance (Junction to Lead (pin 7)) Symbol VIN*1 VC IO*1 PD*1, *2 Tj Tstg Ratings 17 VIN 1.0 0.76 -40 to +125 -40 to +125 130 22 Unit V V A W C C C/W C/W (Ta=25C) j-a j-L *1: VIN (max) and IO (max) are restricted by the relation PD = (VIN - VO) x IO. Please calculate these values referring to the Copper laminate area vs. Power dissipation data as shown hereinafter. *2: When mounted on a glass epoxy board of 1600 mm2 (copper laminate area 2%). Applications * Local power supplies * Battery-driven electronic equipment Electrical Characteristics Ratings Parameter Input Voltage Output Voltage (Reference voltage VADJ for SI-3012KS) Symbol VIN VO (VADJ) Conditions VDIF Dropout Voltage Conditions Conditions Line Regulation Load Regulation Quiescent Circuit Current Circuit Current at Output OFF Temperature Coefficient of Output Voltage Ripple Rejection Overcurrent Protection Starting Current*2 Control Voltage (Output VC Terminal ON)*3 Control Voltage (Output OFF) Control Current (Output ON) Control Current (Output OFF) VOLINE Conditions VOLOAD Conditions Iq Conditions Iq (OFF) Conditions VO/Ta Conditions RREJ Conditions IS1 Conditions VC, IH VC, IL IC, IH Conditions IC, IL Conditions -5 0 -5 2.0 0.8 40 VC=2V 0 VC=0V -5 1.2 VIN=3.3V (VO=2.5V) 2.0 0.8 40 VIN=3.3V, VC=0V 0.3 Tj=0 to 100C (VO=2.5V) 55 VIN=3.3V, f=100 to 120HZ (VO=2.5V) 1.2 VIN=3.3V 2.0 IO=0.5A (VO=2.5V) 0.6 IO=1A (VO=2.5V) 10 VIN=3.3 to 8V, IO=10mA (VO=2.5V) 40 VIN=3.3V, IO=0 to 1A (VO=2.5V) 350 VIN=3.3V, IO=0A, VC=2V, R2=24k 1 VIN=3.3V, VC=0V 0.3 Tj=0 to 100C 55 VIN=3.3V, f=100 to 120HZ 1.2 VIN=3.3V, IO=0A, VC=2V 1 VIN=3.3V, IO=0 to 1A 350 VIN=3.3 to 8V, IO=10mA 40 IO=1A 10 SI-3012KS (variable type) min. 2.4 1.24 1.28 VIN=3.3V, IO=10mA 0.3 IO=0.5A 0.6 1.32 typ. max. min. *1 (Ta=25C, Vc=2 V unless otherwise specified) SI-3025KS typ. 2.50 VIN=3.3V, IO=10mA 0.4 IO=0.5A 0.6 IO=1A 15 VIN=5 to 10V, IO=10mA 50 VIN=5V, IO=0 to 1A 350 VIN=5V, IO=0A, VC=2V 1 VIN=5V, VC=0V 0.3 Tj =0 to 100C 55 VIN=5V, f=100 to 120HZ VIN=5V 0.8 40 0 mV mV max. 2.55 min. *1 SI-3033KS typ. 3.300 VIN=5V, IO=10mA 0.4 max. Unit V 3.366 V 2.45 3.234 V A A mV/ C dB A V A A *1: Refer to the Dropout Voltage parameter. *2: The Is1 is specified at the 5% drop point of output voltage VO on the condition that VIN = VO + 1 V, and IO = 10 mA. *3: Output is OFF when the output control terminal VC is open. Each input level is equivalent to LS-TTL level. Therefore, the device can be driven directly by LS-TTLs. 14 ICs SI-3000KS Series External Dimensions (SOP8) 5.10.4 1.27 0.40.1 0.15+0.1 -0.05 (Unit : mm) Pin Assignment q VC w VIN e VO r Sence (ADJ for SI-3012KS) t GND y GND u GND i GND Plastic Mold Package Type Flammability: UL 94V-0 Product Mass: Approx. 0.1 g 8 7 6 5 0.50.1 4.40.2 0.050.05 1.550.15 1.50.1 0 to 10 1 2 3 4 1.27 0.995max. 0.10 0.40.1 0.12 M Block Diagram SI-3012KS SI-3025KS, SI-3033KS VIN 2 3 VO VIN 2 3 VO 6.20.3 4 VC 1 + 4 ADJ TSD 8 7 REF 6 5 GND VC 1 + Sense TSD 8 7 REF 6 5 GND Typical Connection Diagram SI-3012KS VIN 2 CIN VO 3 SI-3025KS, SI-3033KS VIN 2 VO 3 CO R1 CO VC GND ADJ 1 4 5 to 8 Load CIN sense VC GND 4 1 5 to 8 Load R2 R2 R1, R2: Output voltage setting resistors The output voltage can be set by connecting R1 and R2 as shown above. The recommended value of R2 is 24 k . CIN: Input capacitor (22 F or larger) CO: Output capacitor (22 F or larger) For SI-3000KS series, Co has to be a low ESR capacitor. When using the electrolytic capacitor, the SI-3000KS series may oscillate at a low temperature. R1=(VO-VADJ)/(VADJ/R2) Reference Data Copper Laminate Area vs. Thermal Resistance 140 Area of PC board : 40x40mm 1.2 Copper Laminate Area vs. Power Dissipation Tj=100C Area of PC board : 40x40mm Ta=25C Thermal resistance j-a (C/W) 120 Power dissipation PD (W) 1 Ta=50C Ta=80C 0.8 100 * Obtaining the junction temperature Measure the temperature TL at the lead part of the GND pin (pin 7) with a thermocouple, etc. Then, substitute this value in the following formula to obtain the junction temperature. 0.6 0.4 Tj=PD x j-L + TL ( j-L = 22C/W) 80 60 0.2 40 10 100 Copper laminate area (mm2) (GND terminal) 1000 0 10 100 Copper laminate area (mm2) (GND terminal) 1000 ICs 15 |
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