MOTOROLA LM340T-012, LM340T4-5.0, LM340AT-5.0, LM340AT-015, LM340AT-012 Datasheet

Three-Terminal Positive

Fixed Voltage Regulators

This family of fixed voltage regulators are monolithic integrated circuits capable of driving loads in excess of 1.0 A. These three±terminal regulators employ internal current limiting, thermal shutdown, and safe±area compensation. Devices are available with improved specifications, including a 2% output voltage tolerance, on A±suffix 5.0, 12 and 15 V device types.

Although designed primarily as a fixed voltage regulator, these devices can be used with external components to obtain adjustable voltages and currents. This series of devices can be used with a series±pass transistor to boost output current capability at the nominal output voltage.

•Output Current in Excess of 1.0 A

•No External Components Required

•Output Voltage Offered in 2% and 4% Tolerance*

•Internal Thermal Overload Protection

•Internal Short Circuit Current Limiting

•Output Transistor Safe±Area Compensation

ORDERING INFORMATION

		Output Voltage	Operating
	Device	and Tolerance	Temperature Range	Package
	LM340T±5.0	5.0 V ± 4%
	LM340AT±5.0	5.0 V ± 2%
	LM340T±6.0	6.0 V ± 4%
	LM340T±8.0	8.0 V ± 4%
	LM340T±12	12 V ± 4%	TJ = 0° to +125°C	Plastic Power
	LM340AT±12	12 V ± 2%
	LM340T±15	15 V ± 4%
	LM340AT±15	15 V ± 2%
	LM340T±18	18 V ± 4%
	LM340T±24	24 V ± 4%

* 2% regulators are available in 5, 12 and 15 V devices.

Order this document by LM340/D

LM340, A

Series

THREE±TERMINAL

POSITIVE FIXED

VOLTAGE REGULATORS

SEMICONDUCTOR

TECHNICAL DATA

T SUFFIX

PLASTIC PACKAGE

CASE 221A

Pin 1.	Input	1
2.	Ground	2
3.	Output	3

Heatsink surface is connected to Pin 2.

Simplified Application

Input	LM340±XX	Output
Cin*		CO**
0.33μF

A common ground is required between the input and the output voltages. The input voltage must remain typically 1.7 V above the output voltage even during the low point on the input ripple voltage.

XXthese two digits of the type number indicate voltage.

*Cin is required if regulator is located an appreciable distance from power supply filter.

**CO is not needed for stability; however, it does improve transient response. If needed, use a 0.1 μF ceramic disc.

Motorola, Inc. 1996

Rev 1

	LM340, A Series
MAXIMUM RATINGS (TA = +25°C unless otherwise noted.)
Rating	Symbol	Value	Unit
Input Voltage (5.0 V ± 18 V)	Vin	35	Vdc
(24 V)		40
Power Dissipation and Thermal Characteristics
Plastic Package
TA = +25°C	PD	Internally Limited	W
Derate above TA = +25°C	1/θJA	15.4	mW/°C
Thermal Resistance, Junction±to±Air	θJA	65	°C/W
TC= +25°C	PD	Internally Limited	W
Derate above TC = +75°C (See Figure 1)	1/θJA	200	mW/°C
Thermal Resistance, Junction±to±Case	θJC	5.0	°C/W
Storage Temperature Range	Tstg	±65 to +150	°C
Operating Junction Temperature Range	TJ	0 to +150	°C

Representative Schematic Diagram

1.0k	1.0k				Input
				210
			6.7V
				16k
				100
300		1.0k		200
3.6k		3.0k
			10pF
6.4k	5.6k			300
				13	0.12
			50	200	Output
	520
		40
	2.6k	pF
	6.0k
2.0k	3.9k
6.0k	2.8k				Gnd

2	MOTOROLA ANALOG IC DEVICE DATA

LM340, A Series

LM340±5.0

ELECTRICAL CHARACTERISTICS (Vin = 10 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)

		Characteristics	Symbol	Min	Typ	Max	Unit
Output Voltage (TJ = +25°C)			VO	4.8	5.0	5.2	Vdc
IO = 5.0 mA to 1.0 A
Line Regulation (Note 2)			Regline				mV
8.0	Vdc to 20 Vdc			±	±	50
7.0	Vdc to 25 Vdc (TJ = +25°C)			±	±	50
8.0	Vdc to 12 Vdc, IO = 1.0 A			±	±	25
7.3	Vdc to 20 Vdc, IO = 1.0 A (TJ = +25°C)			±	±	50
Load Regulation (Note 2)			Regload				mV
5.0 mA ≤ IO		≤ 1.0 A		±	±	50
5.0 mA ≤ IO		≤ 1.5 A (TJ = +25°C)		±	±	50
250 mA ≤ IO ≤ 750 mA (TJ = +25°C)				±	±	25
Output Voltage			VO	4.75	±	5.25	Vdc
7.0	≤ Vin ≤ 20 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W
Quiescent Current			IB				mA
IO = 1.0 A				±	±	8.5
TJ = +25°C				±	4.0	8.0
Quiescent Current Change			IB				mA
7.0	≤ Vin ≤ 25 Vdc, IO = 500 mA			±	±	1.0
5.0 mA ≤ IO ≤ 1.0 A, Vin = 10 V				±	±	0.5
7.5	≤ Vin ≤ 20 Vdc, IO = 1.0 A			±	±	1.0
Ripple Rejection			RR	62	80	±	dB
IO = 1.0 A (TJ = +25°C)
Dropout Voltage			VI ± VO	±	1.7	±	Vdc
Output Resistance (f = 1.0 kHz)			rO	±	2.0	±	mΩ
Short Circuit Current Limit (TJ = +25°C)			ISC	±	2.0	±	A
Output Noise Voltage (TA = +25°C)			Vn	±	40	±	μV
10 Hz ≤ f ≤ 100 kHz
Average Temperature Coefficient of Output Voltage			TCVO	±	±0.6	±	mV/°C
IO = 5.0 mA
Peak Output Current (TJ = +25°C)			IO	±	2.4	±	A
Input Voltage to Maintain Line Regulation (TJ = +25°C)				7.3	±	±	Vdc
IO = 1.0 A

NOTES: 1. Tlow to Thigh = 0° to +125°C

2.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.

DEFINITIONS

Line Regulation ± The change in output voltage for a change in the input voltage. The measurement is made under conditions of low dissipation or by using pulse techniques such that the average chip temperature is not significantly affected.

Load Regulation ± The change in output voltage for a change in load current at constant chip temperature.

Maximum Power Dissipation ± The maximum total device dissipation for which the regulator will operate within specifications.

Quiescent Current ± That part of the input current that is not delivered to the load.

Output Noise Voltage ± The rms AC voltage at the output, with constant load and no input ripple, measured over a specified frequency range.

MOTOROLA ANALOG IC DEVICE DATA	3

LM340, A Series

LM340A±5.0

ELECTRICAL CHARACTERISTICS (Vin = 10 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)

		Characteristics	Symbol	Min	Typ	Max	Unit
Output Voltage (TJ = +25°C)			VO	4.9	5.0	5.1	Vdc
IO = 5.0 mA to 1.0 A
Line Regulation			Regline				mV
7.5 Vdc to 20 Vdc, IO = 500 mA				±	±	10
7.3 Vdc to 25 Vdc (TJ = +25°C)				±	3.0	10
8.0 Vdc to 12 Vdc				±	±	12
8.0 Vdc to 12 Vdc (TJ = +25°C)				±	±	4.0
Load Regulation			Regload				mV
5.0 mA ≤ IO		≤ 1.0 A		±	±	25
5.0 mA ≤ IO		≤ 1.5 A (TJ = +25°C)		±	±	25
250 mA ≤ IO ≤ 750 mA (TJ = +25°C)				±	±	15
Output Voltage			VO	4.8	±	5.2	Vdc
7.5 ≤ Vin ≤ 20 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W
Quiescent Current			IB	±	±	6.5	mA
TJ = +25°C				±	3.5	6.0
Quiescent Current Change			IB				mA
5.0 mA ≤ IO ≤ 1.0 A, Vin = 10 V				±	±	0.5
8.0 ≤ Vin	≤ 25 Vdc, IO = 500 mA			±	±	0.8
7.5 ≤ Vin	≤ 20 Vdc, IO = 1.0 A (TJ = +25°C)			±	±	0.8
Ripple Rejection			RR				dB
8.0 ≤ Vin ≤ 18 Vdc, f = 120 Hz
IO = 500 mA				68	±	±
IO = 1.0 A (TJ = +25°C)				68	80	±
Dropout Voltage			VI ± VO	±	1.7	±	Vdc
Output Resistance (f = 1.0 kHz)			rO	±	2.0	±	mΩ
Short Circuit Current Limit (TJ = +25°C)			ISC	±	2.0	±	A
Output Noise Voltage (TA = +25°C)			Vn	±	40	±	μV
10 Hz ≤ f ≤ 100 kHz
Average Temperature Coefficient of Output Voltage			TCVO	±	±0.6	±	mV/°C
IO = 5.0 mA
Peak Output Current (TJ = +25°C)			IO	±	2.4	±	A
Input Voltage to Maintain Line Regulation (TJ = +25°C)				7.3	±	±	Vdc
IO = 1.0 A
NOTE: 1. Tlow to Thigh = 0° to +125°C

4	MOTOROLA ANALOG IC DEVICE DATA

LM340, A Series

LM340±6.0

ELECTRICAL CHARACTERISTICS (Vin = 11 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)

		Characteristics	Symbol	Min	Typ	Max	Unit
Output Voltage (TJ = +25°C)			VO	5.75	6.0	6.25	Vdc
IO = 5.0 mA to 1.0 A
Line Regulation			Regline				mV
9.0	Vdc to 21 Vdc			±	±	60
8.0	Vdc to 25 Vdc (TJ = +25°C)			±	±	60
9.0	Vdc to 13 Vdc, IO = 1.0 A			±	±	30
8.3	Vdc to 21 Vdc, IO = 1.0 A (TJ = +25°C)			±	±	60
Load Regulation			Regload				mV
5.0 mA ≤ IO		≤ 1.0 A		±	±	60
5.0 mA ≤ IO		≤ 1.5 A (TJ = +25°C)		±	±	60
250 mA ≤ IO ≤ 750 mA (TJ = +25°C)				±	±	30
Output Voltage			VO	5.7	±	6.3	Vdc
8.0	≤ Vin ≤ 21 Vdc, 6.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W
Quiescent Current			IB				mA
IO = 1.0 A				±	±	8.5
TJ = +25°C				±	4.0	8.0
Quiescent Current Change			IB				mA
8.0	≤ Vin ≤ 25 Vdc, IO = 500 mA			±	±	1.0
5.0 mA ≤ IO ≤ 1.0 A, Vin = 11 V				±	±	0.5
8.6	≤ Vin ≤ 21 Vdc, IO = 1.0 A			±	±	1.0
Ripple Rejection			RR	59	78	±	dB
IO = 1.0 A (TJ = +25°C)
Dropout Voltage			VI ± VO	±	1.7	±	Vdc
Output Resistance (f = 1.0 kHz)			rO	±	2.0	±	mΩ
Short Circuit Current Limit (TJ = +25°C)			ISC	±	1.9	±	A
Output Noise Voltage (TA = +25°C)			Vn	±	45	±	μV
10 Hz ≤ f ≤ 100 kHz
Average Temperature Coefficient of Output Voltage			TCVO	±	±0.7	±	mV/°C
IO = 5.0 mA
Peak Output Current (TJ = +25°C)			IO	±	2.4	±	A
Input Voltage to Maintain Line Regulation (TJ = +25°C)				8.3	±	±	Vdc
IO = 1.0 A
NOTE: 1. Tlow to Thigh = 0° to +125°C

MOTOROLA ANALOG IC DEVICE DATA	5

LM340, A Series

LM340±8.0

ELECTRICAL CHARACTERISTICS (Vin = 14 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)

	Characteristics	Symbol	Min	Typ	Max	Unit
Output Voltage (TJ = +25°C)		VO	7.7	8.0	8.3	Vdc
IO = 5.0 mA to 1.0 A
Line Regulation		Regline				mV
11 Vdc to 23 Vdc			±	±	80
10.5 Vdc to 25 Vdc (TJ = +25°C)			±	±	80
11 Vdc to 17 Vdc, IO = 1.0 A			±	±	40
10.5 Vdc to 23 Vdc, IO = 1.0 A (TJ = +25°C)			±	±	80
Load Regulation		Regload				mV
5.0 mA ≤ IO	≤ 1.0 A		±	±	80
5.0 mA ≤ IO	≤ 1.5 A (TJ = +25°C)		±	±	80
250 mA ≤ IO ≤ 750 mA (TJ = +25°C)			±	±	40
Output Voltage		VO	7.6	±	8.4	Vdc
10.5 ≤ Vin ≤ 23 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W
Quiescent Current		IB				mA
IO = 1.0 A			±	±	8.5
TJ = +25°C			±	4.0	8.0
Quiescent Current Change		IB				mA
10.5 ≤ Vin ≤ 25 Vdc, IO = 500 mA			±	±	1.0
5.0 mA ≤ IO ≤ 1.0 A, Vin = 14 V			±	±	0.5
10.6 ≤ Vin ≤ 23 Vdc, IO = 1.0 A			±	±	1.0
Ripple Rejection		RR	56	76	±	dB
IO = 1.0 A (TJ = +25°C)
Dropout Voltage		VI ± VO	±	1.7	±	Vdc
Output Resistance (f = 1.0 kHz)		rO	±	2.0	±	mΩ
Short Circuit Current Limit (TJ = +25°C)		ISC	±	1.5	±	A
Output Noise Voltage (TA = +25°C)		Vn	±	52	±	μV
10 Hz ≤ f ≤ 100 kHz
Average Temperature Coefficient of Output Voltage		TCVO	±	±1.0	±	mV/°C
IO = 5.0 mA
Peak Output Current (TJ = +25°C)		IO	±	2.4	±	A
Input Voltage to Maintain Line Regulation (TJ = +25°C)			10.5	±	±	Vdc
IO = 1.0 A
NOTE: 1. Tlow to Thigh = 0° to +125°C

6	MOTOROLA ANALOG IC DEVICE DATA