AV1117 AVICTEK | Alldatasheet
Document overview
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Technical content
@vic A V 1 1 1 7 Copyright © Avic Electronics Corp. 1 W e b s i t e : http://www.avictek.com Features Outline Dimension
- Low dropout voltage
- Load regulation: 0.05% typical
- Trimmed current limit
- On-chip thermal limiting
- Three-terminal adjustable or fixed 2.5V , 2.85V , 3.3V , 5V
- Surface mount package SOT-223
Applications
- Active SCSI terminators
- High efficiency linear regulators
- Portable Top/Notebook computers
- Post regulators for switching supplies
- Battery chargers
- 5V to 3.3V linear regulators
- Motherboard clock supplies
Description
The A V1117 and A V1117-2.5, -2.85, -3.3 and -5 are low dropout three-terminal regulators with 1A output current capability. These devices have 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. Unlike PNP type regulators where up to 10% of the output current is wasted as quiescent current, the quiescent current of the A V1117 flows into the load, increasing efficiency. The A V1117 series regulators are offered in three-pin surface mount package SOT-223.
@vic A V 1 1 1 7 Copyright © Avic Electronics Corp. 2 W e b s i t e : http://www.avictek.com
Ordering Information
A V1117-xx A V1117-xx SOT-223 * XX(Output V oltage)= 2.5V , 2.85V , 3.0V , 5.0V Typical Applications Absolute Maximum Rating (Ta=25℃) Characteristic Symbol Ratings Unit DC Input V oltage V IN 7.5 V Lead Temperature (Soldering, 10sec) T sol 260 ℃ Storage Temperature Range T stg -65℃+150 ℃ Operating Junction Temperature Range T opr 0 ~ 125 ℃ A V1117 A V1117-2.85
@vic A V 1 1 1 7 Copyright © Avic Electronics Corp. 3 W e b s i t e : http://www.avictek.com
Electrical Characteristics
Operating Conditions: VIN ≤ 7V , TJ=25 ℃ unless otherwise specified The ● denotes specifications which apply over the specified operating temperature range. Note : 1. See thermal regulation specifications for changes in output voltage due to heating effects. Load and line 2. Line and load regulation are guaranteed up to the maximum power dissipation. (18W). Power dissipation is determined by input/output differential and the output current. Guaranteed maximum output power will not be available over the full input/output voltage range. 3. A V1117 only. Min Typ Max VREF 1.5V(VIN-VOUT )5.75V 10mA IOUT 1A 1.225 (-2%) 1.25 1.275 (2%) V 10mA IOUT 1A AV1117-2.5, 4VVIN7V 2.450 2.5 2.550 AV1117-5, 6.5VVIN7V 4.900 5.0 5.100 ∆VO (VOUT +1.5V)VIN7V IOUT =10mA 0.005 0.2 % ∆VO (VIN - VOUT )=2V 10mAIOUT 1A - 0.05 0.5 % VD ∆VREF=1%, IOUT =1A -1 . 1 1 . 2V (VIN - VOUT )=2V 1.1 1.5 A IAdj 35 120 µA ∆IAdj 1.5V(VIN-VOUT )5.75V 10mA IOUT 1A 0.2 5 µA IO(MIN) 1.5V(VIN-VOUT )5.75V 10 mA ID VIN = VOUT + 1.25V 41 3 m A SVR f=120Hz, COUT =22µF Tantalum (VIN-VOUT )=3V, IOUT =1A 60 72 dB TA=25, 30ms pulse 0.004 0.02 %/W ∆VO 0.5 % ∆VO TA=125 , 1000hrs 0.03 1.0 % EN TA=25 , 10Hz f 10kHz 0.003 % 15 /WThermal Resistance, Junction to Case Reference voltage 3 VOOutput Voltage Adjust Pin Current Change 3 Quiescent Current Supply Voltage Rejection Thermal Regulation Temperature Stability Conditions V Symbol Ratings Units Long-Term Stability RMS Output Noise (% of V OUT) Parameter Line Regulation 1,2 Load Regulation 1,2 Minimum Load Current Current Limit Adjust Pin Current 3 Dropout Voltage
@vic A V 1 1 1 7 Copyright © Avic Electronics Corp. 4 W e b s i t e : http://www.avictek.com Electrical Characteristics Curves
@vic A V 1 1 1 7 Copyright © Avic Electronics Corp. 5 W e b s i t e : http://www.avictek.com