ANPEC APL1085 handbook

APU0594WE-TY

APL1085

3A Low Dropout Fast Response Positive Adjustable Regulator and Fixed 3.3V

Features

•Fast Transient Response

•Guaranteed Dropout Voltage at Multiple Currents

•Load Regulation : 0.05% Typ.

•Line Regulation : 0.03% Typ.

•Low Dropout Voltage : 1.2V Typ. at IOUT =3A

•Trimmed Current Limit : 3A Typ. at TJ=125 °C

•On-Chip Thermal Limiting : 150 °C Typ.

•Standard 3-pin TO-220 , TO-252 and TO-263 Power Package

Applications

•PentiumTM Processor Supplies

•PowerPCTM Supplies

•Low Voltage Logic Supplies

•Battery-Powered Circuitry

•Post Regulator for Switching Power Supply

General Description

The APL1085 is a low dropout three-terminal adjustable regulator with 3A output current capability. In order to obtain lower dropout voltage and faster transient response, which is critical for low voltage applications, the APL1085 has been optimized. The output available voltage range of adjustable version is from 1.25~5.75V with an input supply below 7V , and the fixed 3.3V output voltage device is also available.

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 that would create excessive junction temperatures.

The APL1085 is available in both the through-hole and surface mount versions of the industry standard

Pin Description

TAB is VOUT				3					VIN
				2					VOUT
				1					ADJ
Front View APL1085 TO-220 Package
				3				VIN
TAB is VOUT				2				VO UT
				1				AD J
Front View APL1085 TO-252 Package
								VIN
				3
TAB is V	OUT			2				VO UT
				1				ADJ

Front View APL1085 TO-263 Package

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders.

Copyright ANPEC Electronics Corp.	1	www.anpec.com.tw
Rev. B.5 - Jun., 2003

APL1085

Ordering Information

A P L 1 0 8 5 -

P a c k a g e C o d e

F : T O - 2 2 0

G : T O - 2 6 3

L e a d F r e e C o d e

U : T O - 2 5 2

T e m p . R a n g e

H a n d lin g C o d e

C : 0 to

7 0 °C

T e m p . R a n g e

H a n d lin g

C o d e

T U : T u b e

T R : T a p e & R e e l

P a c k a g e C o d e

V o lta g e C o d e

:

V o lta g e C o d e

3 3 : 3 . 3 V

B la n k : A d ju s ta b le V e r s io n

L e a d F r e e C o d e

L : L e a d F re e D e v ic e

B la n k : O r ig in a l D e v ic e

A P L 1 0 8 5 :

X X X X X - D a te C o d e

A P L 1 0 8 5 - 3 3 :

3 3

X X X X X - D a te C o d e

A P L 1 0 8 5

A P L 1 0 8 5

X X X X X

X X X X X

Absolute Maximum Ratings

Symbol	Parameter	Rating	Unit
VI	Input Voltage	7	V
TJ	Operating Junction Temperature Range	0 to 125	°C
	Control Section
	Power Transistor	0 to 150
TSTG	Storage Temperature Range	-65 to +150	°C
TL	Lead Temperature (Soldering, 10 second)	260	°C

Electrical Characteristics

Symbol	Parameter	Test Conditions		APL1085			Unit
				Min.	Typ.	Max.
VREF	Reference Voltage	1.5V≤(VIN -VOUT) ≤5.75V,		1.225(-2%)	1.250	1.275(+2%)	V
		10mA≤ IOUT ≤3A, TJ =0~125°C
VOUT	Output Voltage	10mA≤ IOUT ≤ 3A, 4.75V≤VIN ≤7V,		3.235(-2%)	3.300	3.365(+2%)	V
	APL1085-3.3	TJ =0~125°C
REGLINE	Line Regulation	TJ =0~125°C, (Notes 1)			0.03	0.2	%
	APL1085	2.75V≤VIN ≤7V, IOUT=10mA,
	APL1085-3.3	4.75V≤VIN ≤7V, IOUT=0mA ,
REGLOAD	Load Regulation	TJ=25°C, (Notes 1)					%
	APL1085	(VIN -VOUT)=3V, 10mA≤ IOUT ≤ 3A			0.05	0.3
	APL1085-3.3	VI N=5V, 0mA≤ IOUT ≤ 3A			0.05	0.5
VD	Dropout Voltage	∆VREF=1% ,IOUT=3A ,TJ =0~125°C			1.3	1.4	V
ILIMIT	Current Limit	(VIN -VOUT)=1.7V,	TJ=25°C	4.5	6.0
			TJ=125°C	3.5	5.0
		(VIN -VOUT)=3V,	TJ=25°C	5.0	6.5		A
			TJ=125°C	4.0	5.5
IADJ	Adjust Pin Current	(VIN -VOUT)=3V, IOUT=10mA,			60	120	A
		TJ=0125°C
Copyright ANPEC Electronics Corp.			2			www.anpec.com.tw
Rev. B.5 - Jun, 2003

APL1085

Electrical Characteristics Cont.

Symbol	Parameter		Test Conditions		APL1085				Unit
				Min.		Typ.		Max.
∆IADJ	Adjust Pin Current		1.5V≤( VIN -VOUT)≤5.75V,			0.2		5	µA
	Change	APL1085	10mA≤ IOUT≤ 3A
ILMIN	Minimum Load		1.5V≤( VIN -VOUT)≤5.75V,			2		10	mA
	Current	APL1085	TJ=0 125°C
IQ	Quiescent Current		VI N=5V			8		13	mA
	APL1085-3.3
PSRR	Ripple Rejection		F=120Hz, Cout=22µF, Tant. ,	60					dB
			(VIN -VOUT)=3V, IOUT=3A
LS	Long -Term		TJ =125°C,1000Hrs.			0.03		1.0	%
	Stability
VN	RMS Output		TJ=25°C,10Hz? F? 10kHz			0.003			%
	Noise(% of VOUT)
θJC	Thermal		Control Circuitry/Power					0.7/3.0	°C/
	Resistance		Transistor						W
	Junction to Case

NOTE 1: See thermal regulation specifications for changes in output voltage due to heating effects. Load and line regulations are measured at a constant junction temperature by low duty cycle pulse testing.

Application Circuits

Typical Regulator

VIN (2.75V~7V)	APL1085	VOUT (1.250V/ 3A)
10F +		+
C1		Solid Tantalum
		C2*

5V to 3.3V Regulator

VIN	(5V)	+	APL1085	+	VOUT (3.3V/ 3A)
	10F				Solid Tantalum
			R1
	C1				C2*
*Required for stability			R2	R1/(R1+R2)=1.250V/3.3V

APL1085:C2=10µF

* R1 is typically in range of 100Ω to 120Ω

Copyright ANPEC Electronics Corp.	3	www.anpec.com.tw
Rev. B.5 - Jun, 2003

APL1085

Typical Characteristics

Dropout Voltage vs Output Current

	1.5
	1.4
	1.3		°
(V)	1.2	TJ= -50 C
Voltage
	1.1
	1.0	TJ= 25°C
Dropout	0.9
	0.8	TJ=125°C				TJ=0°C
	0.7
	0.6
	0.50	0.5	1	1.5	2	2.5	3

Output Current (A)

Short-Circuit Current vs Temperature

	14	VIN-VOUT (SHORT CIRCUIT) =5V
(A)	13
	12
Current
	11
	10
-Circuit
	9
	8
Shout	7
	6
		VIN-VOUT(SHORT CIRCUIT) =3.3V
	5
	4	0	50	100	150
	-50

Temperature (°C)

Load Regulation vs Temperature

Reference Voltage vs Temperature

	0.10	∆ I =3A					1.275
							1.270
(%)	0.05
							1.265
Output Voltage Deviation						Reference Voltage (V)
	0.0						1.260
							1.255
	-0.05						1.250
	-0.10						1.245
							1.240
	-0.15						1.235
							1.230
	-0.20	0	50	100	150		1.225	0	50	100	150
	-50						-50

Temperature (°C)

Temperature (°C)

Copyright ANPEC Electronics Corp.	4	www.anpec.com.tw
Rev. B.5 - Jun, 2003