SGS Thomson Microelectronics LD1117BS33TR, LD1117BS28TR, LD1117BS25TR, LD1117BS18TR, LD1117BDT50TR Datasheet

	LD1117A/B
	SERIES
	LOW DROP FIXED AND ADJUSTABLE
	POSITIVE VOLTAGE REGULATORS
	PRELIMINARY DATA

■LOW DROPOUT VOLTAGE (1.15V TYP @ IOUT=1.2A, 25 oC)

■VERY LOW QUIESCENT CURRENT (5mA TYP @ 25 oC)

■TYPE A: OUTPUT CURRENT UP TO 1000mA

■TYPE B: OUTPUT CURRENT UP TO 1200mA

■FIXED OUTPUT VOLTAGE OF: 1.8V, 2.5V, 2.85V, 3.3V, 5.0V

■ADJUSTABLE VERSION AVAILABILITY (Vref=1.25V)

■INTERNAL CURRENT AND THERMAL LIMIT

■ONLY 10 μF FOR STABILITY

■AVAILABLE IN ± 2% (AT 25oC) AND 4% IN FULL TEMPERATURE RANGE

■HIGH SUPPLY VOLTAGE REJECTION : (80dB TYP)

■TEMPERATURE RANGE : 0oC TO 125oC

DESCRIPTION

The LD1117A and LD1117B are two LOW DROP Voltage Regulator able to provide respectively up to 1000mA and 1200mA of Output Current, available even in adjustable version (Vref=1.25V). Concerning fixed versions, are offered the following Output Voltages: 1.8V, 2.5V, 2.85V, 3.3V and 5.0V. The 2.85V type is ideal for SCSI-2 lines active termination. The device is supplied in: SOT-223, DPAK. The

BLOCK DIAGRAM

SOT-223

TO-252 (DPAK)

SOT-223 and DPAK surface mount packages optimize the thermal characteristics even offering a relevant space saving effect. High efficency is assured by NPN pass transistor. In fact in this case, unlike than PNP one, the Quiescent Current flows mostly into the load. Only a very common 10μF minimum capacitor is needed for stability. The ADJUSTABLE LD1117 is pin to pin compatible with the other standard Adjustable voltage regulators maintaining the better performances in terms of Drop and Tolerance.

June 2000

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LD1117A/B SERIES

ABSOLUTE MAXIMUM RATINGS

Symbol	Parameter	Value	Unit
VIN	DC Input Voltage	10	V
Pto t	Power Dissipation	12	W
Tstg	Storage Temperature Range	-40 to 150	o C
To p	Operating Junction Temperature Range	0 to 125	o C

Absolute Maximum Ratings are those value beyond which damage to the device may occur. Functional operation under these condition is not implied. Over the above suggested Max Power Dissipation a Short Circuit could definetively damage the device.

THERMAL DATA

Symbol	Parameter	SOT-223	DPAK	Unit
Rthjca se	Thermal Resistance Junction-case	15	8	oC/W

APPLICATION CIRCUIT

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LD1117A/B SERIES

CONNECTION DIAGRAM AND ORDERING NUMBERS (top view)

SOT-223

DPAK

SOT-223	DPAK	Output Voltage
LD1117AS18TR	LD1117ADT18TR	1.8V
LD1117BS18TR	LD1117BDT18TR	1.8V
LD1117AS25TR	LD1117ADT25TR	2.5V
LD1117BS25TR	LD1117BDT25TR	2.5V
LD1117AS28TR	LD1117ADT28TR	2.85V
LD1117BS28TR	LD1117BDT28TR	2.85V
LD1117AS33TR	LD1117ADT33TR	3.3V
LD1117BS33TR	LD1117BDT33TR	3.3V
LD1117AS50TR	LD1117ADT50TR	5V
LD1117BS50TR	LD1117BDT50TR	5V
LD1117AST-R	LD1117ADT-R	ADJUSTABLE
LD1117BST-R	LD1117BDT-R	FROM 1.25 TO 15V

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LD1117A/B SERIES

ELECTRICAL CHARACTERISTICS FOR LD1117A#18 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 μF, CI = 10 μF unless otherwise specified)

Symbol	Parameter		Test Conditions		Min.	Typ.	Max.	Unit
VO	Output Voltage	VI = 3.8 V	IO = 10 mA Tj = 25 oC		1.764	1.8	1.836	V
VO	Output Voltage	IO = 0 to 1000 mA VI = 3.3 to 8 V			1.728		1.872	V
VO	Line Regulation	VI = 3.3 to 8 V		IO = 0 mA		1	6	mV
VO	Load Regulation	VI = 3.3 V	IO = 0 to 1000 mA			1	10	mV
VI	Operating Input Voltage	IO = 100 mA					10	V
Id	Quiescent Current	VI ≤ 8 V IO = 0 mA				5	10	mA
IO	Output Current	VI - VO = 5 V		Tj = 25 oC	1000	1200		mA
SVR	Supply Voltage Rejection	IO = 40 mA	f = 120 Hz		60	80		dB
		VI - VO = 3 V		Vripple = 1 Vpp
VD	Dropout Voltage	IO = 100 mA				1	1.10	V
		IO = 500 mA				1.05	1.15	V
		IO = 1000 mA				1.15	1.30	V
VO(pwr)	Thermal Regulation	Ta = 25 oC	30ms Pulse			0.08	0.2	%/W

ELECTRICAL CHARACTERISTICS FOR LD1117B#18 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 μF, CI = 10 μF unless otherwise specified)

Symbol	Parameter		Test Conditions		Min.	Typ.	Max.	Unit
VO	Output Voltage	VI = 3.8 V	IO = 10 mA Tj = 25 oC		1.764	1.8	1.836	V
VO	Output Voltage	IO = 0 to 1200 mA VI = 3.3 to 8 V			1.728		1.872	V
VO	Line Regulation	VI = 3.3 to 8 V		IO = 0 mA		1	6	mV
VO	Load Regulation	VI = 3.3 V	IO = 0 to 1200 mA			1	10	mV
VI	Operating Input Voltage	IO = 100 mA					10	V
Id	Quiescent Current	VI ≤ 8 V IO = 0 mA				5	10	mA
IO	Output Current	VI - VO = 5 V		Tj = 25 oC	1200	1500		mA
SVR	Supply Voltage Rejection	IO = 40 mA	f = 120 Hz		60	80		dB
		VI - VO = 3 V		Vripple = 1 Vpp
VD	Dropout Voltage	IO = 100 mA				1	1.10	V
		IO = 500 mA				1.05	1.15	V
		IO = 1200 mA				1.15	1.30	V
VO(pwr)	Thermal Regulation	Ta = 25 oC	30ms Pulse			0.08	0.2	%/W

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LD1117A/B SERIES

ELECTRICAL CHARACTERISTICS FOR LD1117A#25 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 μF, CI = 10 μF unless otherwise specified)

Symbol	Parameter		Test Conditions		Min.	Typ.	Max.	Unit
VO	Output Voltage	VI = 4.5 V	IO = 10 mA Tj = 25 oC		2.45	2.5	2.55	V
VO	Output Voltage	IO = 0 to 1000 mA VI = 3.9 to 8 V			2.4		2.6	V
VO	Line Regulation	VI = 3.9 to 8 V		IO = 0 mA		1	6	mV
VO	Load Regulation	VI = 3.9 V	IO = 0 to 1000 mA			1	10	mV
VI	Operating Input Voltage	IO = 100 mA					10	V
Id	Quiescent Current	VI ≤ 10 V IO = 0 mA				5	10	mA
IO	Output Current	VI - VO = 5 V		Tj = 25 oC	1000	1200		mA
SVR	Supply Voltage Rejection	IO = 40 mA	f = 120 Hz		60	80		dB
		VI - VO = 3 V		Vripple = 1 Vpp
VD	Dropout Voltage	IO = 100 mA				1	1.10	V
		IO = 500 mA				1.05	1.15	V
		IO = 1000 mA				1.15	1.30	V
VO(pwr)	Thermal Regulation	Ta = 25 oC	30ms Pulse			0.08	0.2	%/W

ELECTRICAL CHARACTERISTICS FOR LD1117B#25 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 μF, CI = 10 μF unless otherwise specified)

Symbol	Parameter		Test Conditions		Min.	Typ.	Max.	Unit
VO	Output Voltage	VI = 4.5 V	IO = 10 mA Tj = 25 oC		2.45	2.5	2.55	V
VO	Output Voltage	IO = 0 to 1200 mA VI = 3.9 to 8 V			2.4		2.6	V
VO	Line Regulation	VI = 3.9 to 8 V		IO = 0 mA		1	6	mV
VO	Load Regulation	VI = 3.9 V	IO = 0 to 1200 mA			1	10	mV
VI	Operating Input Voltage	IO = 100 mA					10	V
Id	Quiescent Current	VI ≤ 10 V IO = 0 mA				5	10	mA
IO	Output Current	VI - VO = 5 V		Tj = 25 oC	1200	1500		mA
SVR	Supply Voltage Rejection	IO = 40 mA	f = 120 Hz		60	80		dB
		VI - VO = 3 V		Vripple = 1 Vpp
VD	Dropout Voltage	IO = 100 mA				1	1.10	V
		IO = 500 mA				1.05	1.15	V
		IO = 1200 mA				1.15	1.30	V
VO(pwr)	Thermal Regulation	Ta = 25 oC	30ms Pulse			0.08	0.2	%/W

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