SI-3012KS-TL

1-1-4 Linear Regulator ICs SI-3000KS Series Surface-Mount, Low Current Consumption, Low Dropout Voltage ■Features ■Absolute Maximum Ratings • Compact surface-mount package (SOP8) Parameter • Compatible with low ESR capacitor • Low circuit current at output OFF Iq ≤ 350 µA (IO = 0 A, VC = 2 V) • Low current consumption Iq (OFF) ≤ 1 µA (VC = 0 V) Unit VIN*1 17 V VC VIN V DC Output Current IO*1 1.0 A Power Dissipation PD*1, *2 0.76 W Junction Temperature Tj –40 to +125 °C Storage Temperature Tstg –40 to +125 °C Thermal Resistance (Junction to Ambient Air) θ j-a θ j-L 130 °C/W 22 °C/W Thermal resistance (Junction to Lead (pin 7)) • Low dropout voltage VDIF ≤ 0.6 V (IO = 1 A) Ratings Output Control Terminal Voltage DC Input Voltage • Output current: 1.0 A (Ta=25°C) Symbol *1: VIN (max) and IO (max) are restricted by the relation PD = (VIN - VO) × 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%). • 3 types of output voltages (2.5 V, 3.3 V, and variable type) available ns • Output ON/OFF control terminal voltage compatible with LS-TTL es ig • Built-in drooping-type-overcurrent and thermal protection circuits D ■Applications • Local power supplies ew • Battery-driven electronic equipment rN ■Electrical Characteristics (Ta=25°C, Vc=2 V, unless otherwise specified) Ratings Symbol Input Voltage Output Voltage (Reference voltage VADJ for SI-3012KS) VIN 2.4 VO (VADJ) 1.24 Conditions max. 1.28 1.32 VIN=3.3V, IO=10mA IO=0.5A (VO=2.5V) 2.55 3.234 de IO=1A (VO=2.5V) ∆VOLINE 2.50 Conditions Conditions Conditions Iq (OFF) Circuit Current at Output OFF Conditions ∆VO/∆Ta R Overcurrent Protection Starting Current*2 IS1 15 VIN=5 to 10V, IO=10mA 50 VIN=5V, IO=0 to 1A 350 350 VIN=3.3V, IO=0A, VC=2V 1 VIN=5V, IO=0A, VC=2V 1 1 VIN=3.3V, VC=0V VIN=5V, VC=0V ±0.3 Tj=0 to 100°C (VO=2.5V) Tj=0 to 100°C Tj =0 to 100°C 55 55 55 VIN =3.3V, f=100 to 120HZ (VO=2.5V) VIN=3.3V, f=100 to 120HZ VIN=5V, f=100 to 120HZ RREJ Conditions 0.6 1.2 Conditions ±0.3 1.2 VIN=3.3V (VO=2.5V) VC, IL 0.8 0.8 0.8 IC, IH 40 40 40 ot Control Voltage (Output OFF) N Control Current (Output OFF) IC, IL Conditions 2.0 VC=2V Conditions –5 0 –5 0 –5 0 VC=0V *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. 72 ICs µA µA A VIN=5V VC, IH Control Current (Output ON) mV dB Control Voltage (Output ON)*3 2.0 mV mV/ °C 1.2 VIN=3.3V 2.0 V IO=1A ±0.3 Conditions Ripple Rejection IO=0.5A VIN=3.3V, IO=0 to 1A 350 V 0.4 40 VIN=3.3V, VC=0V ec o Temperature Coefficient of Output Voltage V 10 VIN=3.3V, IO=0A, VC=2V, R2=24kΩ m Quiescent Circuit Current 3.366 VIN=5V, IO=10mA VIN=3.3 to 8V, IO=10mA VIN=3.3V, IO=0 to 1A (VO=2.5V) Iq 3.300 0.6 40 m Load Regulation max. 0.4 IO=0.5A 10 VIN=3.3 to 8V, IO=10mA (VO=2.5V) ∆VOLOAD typ. *1 IO=1A en Line Regulation Terminal min. 0.6 Conditions VC max. 2.45 Unit SI-3033KS typ. VIN=3.3V, IO=10mA 0.3 Conditions min. *1 VDIF Dropout Voltage SI-3025KS typ. fo SI-3012KS (variable type) min. d Parameter V µA µA SI-3000KS Series ■External Dimensions (SOP8) (Unit : mm) ±0.4 5.1 1.27 5 1 2 3 4 0.5±0.1 6 6.2±0.3 7 4.4±0.2 8 Pin Assignment q VC w VIN e VO r Sence (ADJ for SI-3012KS) t GND y GND u GND i GND 0.15+0.1 –0.05 0.4±0.1 10 ° 1.27 1.55±0.15 es ig 0.12 M ns 0.10 0.4±0.1 Plastic Mold Package Type Flammability: UL 94V-0 Product Mass: Approx. 0.1 g 0.05±0.05 1.5±0.1 0 to 0.995max. D ■Block Diagram ●SI-3025KS, SI-3033KS 3 VO VIN 2 VC 1 4 ADJ VC 1 rN VIN 2 TSD - ew ●SI-3012KS Sense + 8 fo 7 6 REF 4 TSD - + 3 VO 7 6 REF 5 GND de d 5 GND 8 en ■Typical Connection Diagram ●SI-3012KS VIN 2 R1 m VC GND ADJ 1 4 5 to 8 CIN VIN 2 m VO 3 ●SI-3025KS, SI-3033KS CO Load CIN VO 3 sense VC GND 4 1 5 to 8 CO Load R2 ec o R2 CIN: Input capacitor (22 µF or larger) CO: Output capacitor (22 µF 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. ot R 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 kΩ . N R1=(VO–VADJ)÷(VADJ/R2) ■Reference Data Copper Laminate Area vs. Thermal Resistance 140 Copper Laminate Area vs. Power Dissipation Area of PC board : 40×40mm 1.2 Tj=100°C Area of PC board : 40×40mm 1 120 Power dissipation PD (W) Thermal resistance θ j-a (°C/W) Ta=25°C 100 80 Ta=50°C Ta=80°C 0.8 • 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. Tj=PD × θ j–L + TL 0.6 ( θ j–L = 22°C/W) 0.4 60 0.2 40 10 100 Copper laminate area (mm2) (GND terminal) 1000 0 10 100 Copper laminate area (mm2) (GND terminal) 1000 ICs 73