Texas Instruments PT6305A, PT6305B, PT6305C, PT6305CT, PT6305G Datasheet

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P T 6 3 0 5 S e r i e s

3 AMP HIGH-PERFORMANCE ADJUSTABLE ISR

•Single-Device 5V to 3V Power

•85% Efficiency

•Small SIP Footprint: 0.36" x 2.00” x 0.60"(H)

•Wide Input Voltage Range: +4.5V to +9.0V

•Internal Short Circuit Protection

•Over-Temperature Protection

The PT6305N is Power Trends’ new high performance +5V to +3.3V, 3

Amp, 12-Pin SIP (Single In-line- Package) Integrated Switching Regulator (ISR). This high-perfor- mance ISR allows easy integration of low-power 3.3V logic IC’s into existing 5V systems without redesigning the central power supply. Only one external capacitor is required for proper operation. The PT6306,7,8 can be used to power high-speed data buses (+2.1V), or the new GTL (+1.2V) logic buses.

													Pin-Out Information																					Ordering Information
														Pin No.						Function											Pin No.	Function		PT6305			= +3.3 Volts
																																		PT6306			= +1.8 Volts
Standard Application														1						N/C											7	GND
																																		PT6307			= +2.1 Volts
														2						Vin											8	GND
					12							VO Adjust		3						Vin											9	Vout		PT6308			= +1.2 Volts
2,3,4								9,10,11			(+)		4							Vin											10	Vout
(+)																																		(For dimensions, see page 66.)
VIN												VOUT
					PT6305,6,7,8									5						GND											11	Vout
								C2																											PT Series Suffix (PT1234X)
	C1													6						GND											12	Adjust
																																(See page 40.)
			5,6,7,8																																Case/Pin				Heat Tab Configuration
COM												COM																							Configuration				None		Side
C1 = Optional electrolytic (100µF)																																			Vertical Through-Hole				N		R
																																			Horizontal Through-Hole				A		G
C2 = Required 100µF electrolytic (No tantalum)																																			Horizontal Surface Mount				C		B
See capacitor application note on page 43.
																1										12									(See Thermal Application Notes on page 44 for heat tab
Specifications																																			application data.)
Characteristics																																		PT6305 SERIES
(TA=25˚C unless noted)											Symbols						Conditions																	Min			Typ		Max		Units
Output Current											Io						4.5 ≤ Vin ≤ Vin MAX																	0.3			—		3.0**		ADC
Current Limit											Icl						Vin			= +5V														—			3.6		5.0		ADC
Short Circuit Current											Isc						Vin			= +5V														—			5.0		—		Apk
Input Voltage Range											Vin						0.3A ≤ Io ≤ 3.0A														PT6305N			4.5			—		9		VDC
																															PT6306N			4.5			—		9		VDC
																															PT6307N			4.5			—		9		VDC
																															PT6308N			4.5			—		6.0		VDC
Static Voltage Tolerance											Vo						Vin			= +5V, Io = 3.0A											PT6305N			3.2			3.3		3.4		VDC
																	0°C			≤ Ta ≤						+70°C					PT6306N			1.7			1.8		1.9		VDC
																															PT6307N			2.0			2.1		2.2		VDC
																															PT6308N			1.1			1.2		1.3		VDC
Line Regulation											Regline						4.5V ≤ Vin									≤ 5.5V, Io = 3.0A								—			±25		±50		mV
Load Regulation											Regload						Vin = +5V, 0.3 ≤ Io ≤ 3.0A																	—			±25		±50		mV
Vo Ripple/Noise pk-pk											Vn						Vin = 5V, Io = 3.0A																	—			66		—		mV
Transient Response											ttr						Io step between 1.5A and 3.0A																	—			200		—		µSec
	with C2 = 100µF										Vos						Vo over/undershoot																	—			200		—		mV
Efficiency											η						Vin = +5V, Io = 1.5A														PT6305N			—			85		—		%
																															PT6306N			—			74		—		%
																															PT6307N			—			77		—		%
																															PT6308N			—			63		—		%
																	Vin = +5V, Io = 3.0A														PT6305N			—			80		—		%
																															PT6306N			—			68		—		%
																															PT6307N			—			72		—		%
																															PT6308N			—			57		—		%
Switching Frequency											ƒo						4.5 ≤ Vin ≤ Vin MAX																	500			650		800		KHz
																	0.3A ≤ Io ≤ 3.0A
Operating Temperature											Ta						Free Air Convection (40-60 LFM)																	0			—		+70*		°C
																	Over Vin and Io Ranges
Thermal Resistance											θja						Free Air Convection (40-60 LFM)																	—			25		—		°C/W
Storage Temperature											Ts						—																	-40			—		+125		°C
Mechanical Shock											Per Mil-STD-883D, Method 2002.3 Condition A, 1 msec, Half Sine,																							—			—		500		G’s
											mounted to a fixture
Mechanical Vibration											Per Mil-STD-883D, Method 2007.2 Condition A, 20-2000 Hz																							—			—		15		G’s
Weight											—						—																	—			11.2		—		grams
Relative Humidity											—						Non-condensing																	0			—		95		%

*See Thermal Derating chart. **The PT6305 Series can be easily paralleled to provide output current in multiples of 3 amps. Please contact a Power Trends’ Application Engineer for the appropriate application note. Note: The PT6305 Series requires a 100µF electrolytic capacitor for proper operation in all applications.

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