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B033 Dataheets PDF



Part Number B033
Manufacturers Bay Linear
Logo Bay Linear
Description 1.0 Amp Low Dropout Voltage Regulator
Datasheet B033 DatasheetB033 Datasheet (PDF)

Bay Linear Inspire the Linear Power 1.0Amp Low Dropout Voltage Regulator Adjustable & Fix (0.40Volt Dropout) B033 Description The Bay Linear B033 is a three terminal positive NPN regulator offered as adjustable or fix voltages of 1.8V, 2.5V, 3.0V, 3.3V, and 5Volts. The output current has a capability up to 1.0Amp,. This device has been optimized for low voltage where transient response and minimum input voltage are critical. The 2.85V version is designed specifically to be used in active term.

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Bay Linear Inspire the Linear Power 1.0Amp Low Dropout Voltage Regulator Adjustable & Fix (0.40Volt Dropout) B033 Description The Bay Linear B033 is a three terminal positive NPN regulator offered as adjustable or fix voltages of 1.8V, 2.5V, 3.0V, 3.3V, and 5Volts. The output current has a capability up to 1.0Amp,. This device has been optimized for low voltage where transient response and minimum input voltage are critical. The 2.85V version is designed specifically to be used in active terminators for SCSI bus. Current limit is trimmed to ensure specified output current and controlled short-circuit current. On-Chip thermal limiting provides protection against any combination of overload and ambient temperatures that would create excessive junction temperatures. The B033 is offered in a 3-pin SOT-223, and TO-252 (DPAK) packages compatible with other 3 terminal regulators. 5-pin version in TO-263 with lower dropout of 0.4 volt is available. Features • • • • • • • • Adjustable Output Down to 1.2V Output Current of 1.0Amp Low Dropout 1.0V for B033 Dropout of 0.40 V in for B033A Adjustable & Fix 1.8V, 2.5V, 3.0V, 3.3V, 5.0V Current & Thermal Limiting Lower Cost SOT-89 Package Available in SOT-223, and TO-252, & TO-263 Similar to industry BAOOT/FP • Applications • • • • • • Active SCSI terminators High efficiency Linear Regulator Post regulators fro Switching Supplies Battery Charger 5V to 3.3V linear Regulators Motherboard Clock Supplies Pin Connection Ordering Information Devices B033D-X B033N-X B033T-X B033S-X Package TO-252 TO-223 TO-220 TO-263 Temp. 0 °C to 125 °C 0 °C to 125 °C 0 °C to 125 °C 0 °C to 125 °C TO-252 SOT-223 Tab V GND SOT-223-5 SOT-223 Tab V OUT 1 2 3 VCC GND Adj/GND OUT OUT IN Front View Vcc GND Vout Front View 1 2 3 4 5 #1 Sense #2 Adj/GND #3 OUT #4 Control #5 VIN 5 4 3 2 1 VPOWER VCONTROL OUTPUT ADJ/GND. SENSE TO-263-5 Package Front View Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com B033 Absolute Maximum Rating Parameter Maximum Input Voltage Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering 10 Sec.) Min 0 -65 Max 7.0 125 150 300 Unit V °C Electrical Characteristics (VIN = 7V; TJ=25°C IO = 10mA to 1.0Amp, unless otherwise specified) Parameter Symbol Conditions Reference Voltage VO B033-adj, IOUT=10mA, VIN-VOUT=2V, TJ=25°C 1.5V≤(VIN-VOUT) ≤5.75V 10mA≤IOUT≤IFULL LOAD (VOUT+1.5)≤VIN≤7V, IOUT=10mA MIN 1.213 1.200 -3% TYP 1.250 1.250 MAX 1.288 1.300 +3% 0.6 UNIT V V % Line Regulation (1) REG (line) 0.010 Load Regulation (1) REG (LOAD) Output Voltage VO (Vin-Vout)=2V 10mA≤IOUT≤IFULL LOAD T= 25 °C B033-1.8 IOUT=10mA, VIN=3.8V, TJ=25°C 0≤IOUT≤1.0Amp, 3.2V≤VIN≤7V B033-2.5 IOUT=10mA, VIN=4.5V, TJ=25°C 0≤IOUT≤1.0Amp, 4.0V≤VIN≤7V B033-3.0 IOUT=10mA, VIN=4.85V, TJ=25°C 0≤IOUT≤1.0Amp, 4.35V≤VIN≤7V B033-3.3 IOUT=10mA, VIN=5.0V, TJ=25°C 0≤IOUT≤1.0Amp, 4.8V≤VIN≤7V B033-5.0 IOUT=10mA, VIN=6.0V, TJ=25°C 0≤IOUT≤1.0Amp, 6.5V≤VIN≤7V Control Input VPOWER=VOUT+0.8, ILOAD =10mA VPOWER=VOUT+0.8, ILOAD =1.0Amp, Power Input VCONTROL=VOUT-+2.5V, ILOAD=1.0Amp, (Vin-Vout)=2V 1.5V≤(VIN-VOUT) ≤5.75V T= 25 °C, 30ms pulse T= 25 °C, 1000Hrs T= 25 °C F=120Hz, CADJ=22µF, COUT=22µF Tantalum IOUT=IFULL LOAD, (Vin-Vout)=3V (Note 5) 0.10 1.710 2.375 2.850 3.13 4.750 1.80 2.50 3.00 3.30 5.00 0.9 1.890 2.625 3.150 3.470 5.250 V V V V V Dropout Voltage (3 pin) VD VD IS IMIN LOAD TA TS RA Dropout Voltage (5pin) Current Limit Minimum Load Current Temperature Regulation Long Term Stability Temperature Stability Adjust pin Current Ripple Rejection Thermal Shutdown Thermal Shutdown Hysterics 0.80 0.80 0.35 1.0 10 0.004 0.03 0.5 35 75 155 10 1.1 1.00 1.10 0.40 V V A mA %/W % % µA dB °C °C 0.02 1.0 120 60 Thermal Resistance Junction to case SOT-223 DD Package 15 3.0 15 3.0 °C/W Note: Output Switch tests are performed under pulsed conditions to minimize power dissipation Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com B033 TYPICAL CHRACTRISTICS B033-2.85 B033-ADJ Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com B033 TYPICAL CHRACTRISTICS (Continued) B033-2.85 B033-5.0 B033-2.85 B033-5.0 Line Transient Response Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com B033 APPLICATION NOTES EXTERNAL CAPACITOR To ensure the stability of the B033 an output capacitor of at least 10µF (tantalum)or 50µF (aluminum) is required. The value may change based on the application requirements on the output load or temperature range. The capacitor equivalent series resistance (ESR) will effect the B033 stability. The value of ESR can vary from the type of capacitor used in the applications. The recommended value for ESR is 0.5Ω. The output capacitance could increase in size to .


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