Texas Instruments PT4201A, PT4201C, PT4202A, PT4202C, PT4203A Datasheet

For assistance or to order, call [phone]						Application Notes
						Mechanical Outline
P T 4 2 / 4 3 0 0	S e r i e s					Product Selector Guide
			3-7 WATT 48V INPUT			Revised 5/15/98
			ISOLATED DC-DC CONVERTER
	• Wide Input Voltage Range:			DC to DC converters advance the state-of-the-
		38V to 72V		artforboard-mounted convertersbyemploying
	•	83% Efficiency		high switching frequencies, thick-film technology
	•	1,500 VDC Isolation		and a high degree of silicon integration. The high
	•	18 Pin DIP Package		reliability and very low package height makes
	• 3.5 Million Hour MTBF			these converters ideal for Telecom and Datacom
	•	Meets FCC/EN55022 Class A		applicationsrequiringinput-to-outputisolation
	• UL and CSA approved			with board spacing down to 0.6”.
	• No External Components Required			The PT4200 series is offered in a unique
	•	Adjustable Output Voltage		molded through-hole or SMD-DIP package
		Power Trends’ PT4200 series of isolated		with single output voltages of 2V, 3.3V, 5V, and
				12V, dual outputs of ±5V, +5V/+3.3V, and ±12V.
	Standard Application				Pin-Out Information

		+Vout1				1	18					+Vin
		-Vout			2		17					-Vin
		+Vout2 or NC				3	16
						4	15
			NC			5	14					N C
						6	13
						7	12
Specifications			Vadj			8	11					R C
			N O R			9	10					TOA
						PT42/4300
Characteristics												PT42/4300 SERIES
(Ta = 25°C unless noted)	Symbols	Conditions										Min	Typ	Max	Units
Output Current	Io	Over Vin range	Vo = 2V, 3.3V							0			—	1.5	A
			Vo = 5V							0			—	1.2	A
			Vo = 12V							0			—	0.6	A
Current Limit	Icl	Vin = 48V	Vo = 2V							2.0			—	3.3	A
			Vo = 3.3V							1.7			—	3.3	A
			Vo = 5V							1.4			—	2.4	A
			Vo = 12V							0.7			—	1.2	A
On/Off Standby Current	Iin standby	Vin = 48V, Pin 11 = -Vin										—	0.5	—	mA
Short Circuit Current	Isc	Vin = 48V	Vo = 2V									—	2.8	—	A
			Vo = 3.3V									—	2.4	—	A
			Vo = 5V									—	1.9	—	A
			Vo = 12V									—	1.2	—	A
Inrush Current	Iir	Vin = 48V @ max Io										—	0.6	1.0	A
	tir	On start-up										—	1.0	5.0	mSec
Input Voltage Range	Vin	Over Io Range								38**			48	72	V
Output Voltage Tolerance	Vo	Over Io Range										—	±4	—	%Vo
Idling Voltage	Vo	Io = 0A	Vo = 2V									—	2.7	3.0	V
			Vo = 3.3V									—	3.65	4.0	V
			Vo = 5V									—	5.6	6.0	V
			Vo = 12V									—	14.3	17	V
Ripple Rejection	RR	Over Vin range @ 120 Hz										—	60	—	dB
Line Regulation	Regline	Over Vin range @ max Io										—	±0.5	—	%Vo
Load Regulation	Regload	10% to 100% of Io max										—	±3	—	%Vo
Vo Ripple/Noise	Vn	Vin= 48V, Io=Io max										—	30	70	mVpp
Transient Response	ttr	50% load change										—	100	300	µSec
		Vo over/undershoot										—	3.0	5.0	%Vo
Efficiency	η	Vin=48V, Io=1.5A,	Vo=2V									—	73	—	%
		Vin=48V, Io=1.5A,	Vo=3.3V									—	79	—	%
		Vin=48V, Io=1.2A,	Vo=5V									—	80	—	%
		Vin=48V, Io=0.6A,	Vo=12V									—	83	—	%
Switching Frequency	ƒo	Over Vin and Io										—	485	—	kHz
Operating Temperature	Ta	Vin = 48V @ max Io								-40			—	+85	°C
		Free air convection, (40-60LFM)
Pin Temperature	Tp	@ Pin1										—	—	95	°C
Storage Temperature	Ts	—								-55			—	+125	°C
Mechanical Shock	—	Per Mil-STD-202F, Method 213B,										—	50	—	G’s
		6mS half-sine, mounted to a PCB
Mechanical Vibration	—	Per Mil-STD-202F, Method 204D,										—	10	—	G’s
		10-500Hz, mounted to a PCB
Weight	—	—										—	20	—	grams
Isolation	—	—								1500			—	—	VDC
Flammability	—	Materials meet UL 94V-0

** Minimum input voltage is adjustable - See application note.

Pin Function

1Vout1

2Vout return

3Vout2 or N/C

4Do not connect

5Do not connect

6Do not connect

7Do not connect

8* Vadj

Nominal output

9*	voltage resistor

10Turn-on/off input voltage adjust

11Remote on/off

12Do not connect

13Do not connect

14Do not connect

15Do not connect

16Do not connect

17-Vin

18+Vin

*Please note that when the Vout adjust is not used, pin 8 must be connected to pin 9.

Ordering Information

Through-Hole

PT4201A = 2V/1.5A PT4202A = 3.3V/1.5A PT4203A = 5V/1.2A PT4204A = 12V/0.6A

PT4301A = ±5V/1A

PT4302A = +5.2V/1A, +3.3V/1A

PT4303A = ±12V/0.25A

Surface Mount

PT4201C = 2V/1.5A PT4202C = 3.3V/1.5A PT4203C = 5V/1.2A PT4204C = 12V/0.6A

PT4301C = ±5V/1A

PT4302C = +5.2V/1A, +3.3V/1A

PT4303C = ±12V/0.25A

(For dimensions and PC board layout, see Package Style 900.)

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