Texas Instruments PT5042N, PT5042S, PT5044A, PT5044C, PT5044N Datasheet

For assistance or to order, call	[phone]						Application Notes
							Mechanical Outline
P T 5 0 4 0		S e r i e s					Product Selector Guide
					1 AMP STEP-UP		Revised 6/30/98
					INTEGRATED SWITCHING REGULATOR
		• Wide Input Voltage Range				The Power Trends’ PT5040 Series
			•	85% Efficiency		is a 3-terminal Integrated Switching
			•	Internal Over-Temperature		Regulator (ISR) designed for use with
				Protection		+5 volt systems that require an addi-
			•	Laser-trimmed Output Voltage		tional regulated +8 to +20 volts with up
			•	Soft Start		to 1A of output current. These ISRs
						are packaged in the 3 pin SIP configu-
						ration.

Pin-Out Information

Ordering Information

PT Series Suffix (PT1234X)

Pin

Function

PT5041o = +12 Volts

Case/Pin

Standard Application

1

Vin

PT5042o = +15 Volts

Configuration

2

GND

PT5044o = +8 Volts

Vertical Through-Hole

N

PT5045o = +9 Volts

Horizontal Through-Hole

A

3

Vout

VIN

1

3

VOUT

PT5046o = +10 Volts

Horizontal Surface Mount

C

PT5040

PT5047o = +18 Volts

(+)

(+)

C1

C2

C3

PT5048o = +12.6 Volts

2

Pkg Style 100

PT5049o = +20 Volts

COM

COM

C1 = Optional ceramic (1-5µF)

C2 = Optional ceramic (1-5µF)

C3 = Required Electrolytic (100µF)

NOTE: Boost Topology ISRs are not Short-Circuit Protected.

Specifications

Characteristics							PT5040 SERIES
(Ta=25°C unless noted)	Symbols		Conditions				Min	Typ	Max	Units
Output Current	Io		Over Vin range			Vo=20V	0.1*	—	0.5	A
						Vo=18V	0.1*	—	0.6	A
						Vo=12V	0.1*	—	1.0	A
						Vo=15V	0.1*	—	0.75	A
						Vo=8V	0.1*	—	1.5	A
						Vo=9V	0.1*	—	1.25	A
Current Limit**	Icl		Vin = +5V				—	1.5 Iomax	—	A
Inrush Current	I		V = +5V @ max I		o		—	2.5	—	A
	tir		in				—	1	—	mSec
	ir		On start up
Input Voltage Range	Vin		Io = 0.1 to Iomax			PT5047/5049	4.75	—	(Vo-1V)	V
							4.75	—	14	V
Output Voltage Tolerance	Vo		Over Vin Range							%Vo
			Io = Imax, Ta= -20°C to shutdown				—	±1.5	±3.0
Line Regulation	Regline		Over Vin range				—	±0.5	±1.0	%Vo
Load Regulation	Regload		0.1 ≤ Io ≤ Iomax				—	±0.5	±1.0	%Vo
Vo Ripple/Noise	Vn		Vin= +5V, Io=Iomax				—	±2	±5	%Vo
Transient Response	ttr		25% load change				—	500	—	µSec
	Vos		Vo over/undershoot				—	3.0	5.0	%Vo
Efficiency	η		Vin= +5V, Io=0.5A, Vo= +12V				—	85	—	%
Switching Frequency	ƒo		Over Vin and Io ranges			Vo<15V	500	650	800	kHz
						Vo>15V	650	800	950	kHz
Absolute Maximum	Ta		—				-20	—	+85	°C
Operating Temperature Range
Recommended Operating	Ta		Free Air Convection, (40-60LFM) Vo<15V				-20	—	70***	°C
Temperature Range			Over Vin and Io ranges			Vo>15V	-20	—	55***	°C
Thermal Resistance	θja		Free Air Convection				—	40	—	°C/W
			(40-60LFM)
Storage Temperature	Ts						-40	—	+125	°C
Mechanical Shock			Per Mil-STD-883D, Method 2002.3				—	500	—	G’s
			1 msec, Half Sine, mounted to a fixture
Mechanical Vibration			Per Mil-STD-883D, Method 2007.2,				—	5	—	G’s
			20-2000 Hz, Soldered in a PC Board
Weight							—	4.5	—	grams
* ISR will operate down to no load with reduced specifications.
** Boost topology ISRs are not short circuit protected.			*** See SOA	Curves.

44	Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555	[phone] Fax: [phone] http://www.powertrends.com