Details, datasheet, quote on part number: FAN1117A
PartFAN1117A
CategoryPower Management => Regulators => Linear Regulators => LDO (Low Drop Out)
Description1A Adjustable/fixed Low Dropout Linear Regulator
CompanyFairchild Semiconductor
DatasheetDownload FAN1117A datasheet
Cross ref.Similar parts: MIC3910x
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Features, Applications

Features

Low dropout voltage Load regulation: 0.05% typical Trimmed current limit On-chip thermal limiting Standard SOT-223, TO-220, and TO-252 packages Three-terminal adjustable or fixed 3.3V, 5V

Description

The FAN1117A and -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 10% of the output current is wasted as quiescent current, the quiescent current of the FAN1117A flows into the load, increasing efficiency. The FAN1117A series regulators are available in the industry-standard SOT-223, TO-220, and TO-252 (DPAK) power packages.

Applications

Active SCSI terminators High efficiency linear regulators Post regulators for switching supplies Battery chargers to 5V linear regulators Motherboard clock supplies

Typical Applications

Front View Tab is VOUT Front View 3 Tab is VOUT 1 IN OUT ADJ/GND ADJ/ OUT GND 4-Lead Plastic 15C/W* IN ADJ/ OUT IN GND 3-Lead Plastic = 3C/W*

*With package soldered to 0.5 square inch copper area over backside ground plane or internal power plane, JA can vary from 30C/W to more than 50C/W. Other mounting techniques may provide better thermal resistance than 30C/W.

Parameter VIN (VIN VOUT) * IOUT Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering, 10 sec.) 0 -65 Min. Max. 18 See Figure C Unit V

Figure 1. Absolute Maximum Safe Operating Area

Operating Conditions: VIN = 25C unless otherwise specified. The denotes specifications which apply over the specified operating temperature range. Parameter Reference Voltage3 Conditions 1.5V (VIN VOUT) 7V, 10mA IOUT 1A 10mA IOUT FAN1117A-1.8, 3.3V VIN FAN1117A-2.5, 4V VIN FAN1117A-2.85, 4.35V VIN FAN1117A-3.3, 4.8V VIN FAN1117A-5, 6.5V VIN 12V (VOUT + 1.5V) VIN 12V, IOUT = 10mA (VIN VOUT) 2V, 10mA IOUT 1A VREF = 1%, IOUT = 1A (VIN VOUT) Change3,4 1.5V (VIN VOUT) 7V, 10mA IOUT 1A 1.5V (VIN VOUT) 15V VIN = VOUT = 120Hz, COUT = 22F Tantalum, (VIN VOUT) = 3V, IOUT 25C, 30ms pulse f 10kHz Min. Typ. 1.250 Max. Units V

Line Regulation1,2 Load Regulation1,2 Dropout Voltage Current Limit Adjust Pin Current3 Adjust Pin Current

Minimum Load Current Quiescent Current Ripple Rejection Thermal Regulation Temperature Stability Long-Term Stability RMS Output Noise of VOUT)

Thermal Resistance, Junction SOT-223 to Case TO-252, TO-220 Thermal Shutdown Thermal Shutdown Hysteresis Junction Temperature

Notes: 1. See thermal regulation specifications for changes in output voltage due to heating effects. Load and line regulation are measured at a constant junction temperature by low duty cycle pulse testing. 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. FAN1117A only. 4. Output current must be limited to meet the absolute maximum ratings of the part.


 

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