MOTOROLA LM2931Z-5.0RP, LM2931Z-5.0RA, LM2931Z-5.0, LM2931T-5.0, LM2931DT-5.0RK Datasheet

Low Dropout

Voltage Regulators

The LM2931 series consists of positive fixed and adjustable output voltage regulators that are specifically designed to maintain proper regulation with an extremely low input±to±output voltage differential. These devices are capable of supplying output currents in excess of 100 mA and feature a low bias current of 0.4 mA at 10 mA output.

Designed primarily to survive in the harsh automotive environment, these devices will protect all external load circuitry from input fault conditions caused by reverse battery connection, two battery jump starts, and excessive line transients during load dump. This series also includes internal current limiting, thermal shutdown, and additionally, is able to withstand temporary power±up with mirror±image insertion.

Due to the low dropout voltage and bias current specifications, the LM2931 series is ideally suited for battery powered industrial and consumer equipment where an extension of useful battery life is desirable. The `C' suffix adjustable output regulators feature an output inhibit pin which is extremely useful in microprocessor±based systems.

•Input±to±Output Voltage Differential of < 0.6 V @ 100 mA

•Output Current in Excess of 100 mA

•Low Bias Current

•60 V Load Dump Protection

•±50 V Reverse Transient Protection

•Internal Current Limiting with Thermal Shutdown

•Temporary Mirror±Image Protection

•Ideally Suited for Battery Powered Equipment

•Economical 5±Lead TO±220 Package with Two Optional Leadforms

•Available in Surface Mount SOP±8, D2PAK and DPAK Packages

•High Accuracy (±2%) Reference (LM2931AC) Available

Order this document by LM2931/D

LM2931

Series

LOW DROPOUT

VOLTAGE REGULATORS

FIXED OUTPUT VOLTAGE
Z SUFFIX
PLASTIC PACKAGE			Pin	1. Output
CASE 29
				2. Ground
	12
		3		3. Input
T SUFFIX
PLASTIC PACKAGE
CASE 221A
Heatsink surface			Pin	1. Input
				2. Ground
connected to Pin 2.	1
				3. Output
	2
	3
1
3			1 2 3
DT SUFFIX		DT±1 SUFFIX
PLASTIC PACKAGE		PLASTIC PACKAGE
CASE 369A			CASE 369
(DPAK)			(DPAK)
D2T SUFFIX
PLASTIC PACKAGE
CASE 936		1	2
(D2PAK)
			3

Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2.

(See Following Page for Ordering Information.)

	FIXED					ADJUSTABLE OUTPUT VOLTAGE
N.C.	5	4	N.C.			Pin	1. Adjust
							2. Output Inhibit
Gnd			Gnd		TH SUFFIX
							3. Ground
Input	8	1	Output	8	PLASTIC PACKAGE		4. Input
					CASE 314A		5. Output
				1
	(Top View)					1
				D SUFFIX		5
			PLASTIC PACKAGE		TV SUFFIX	1	1
				CASE 751	PLASTIC PACKAGE		5
	ADJUSTABLE
				(SOP±8)	CASE 314B		D2T SUFFIX
Output						5
	5	4	Adjust				PLASTIC PACKAGE
Inhibit
							CASE 936A
Gnd			Gnd		T SUFFIX
							(D2PAK)
Input	8	1	Output		PLASTC PACKAGE
					CASE 314D	1	Heatsink surface (shown as
	(Top View)				Heatsink surface connected to Pin 3. 5		terminal 6 in case outline
							drawing) is connected to Pin 3.

Motorola, Inc. 1997

Rev 4

			LM2931 Series
	ORDERING INFORMATION
	Output
Device	Voltage	Tolerance	Case	Package
LM2931AD±5.0			751	SOP±8 Surface Mount
LM2931ADT±5.0			369A	Surface Mount DPAK
LM2931ADT±1±5.0		±3.8%	369	DPAK
LM2931AD2T±5.0			936	Surface Mount D2PAK
LM2931AT±5.0			221A	TO±220 Type
LM2931AZ±5.0	5.0 V		29	TO±92 Type
LM2931D±5.0			751	SOP±8 Surface Mount
LM2931D2T±5.0			936	Surface Mount D2PAK
LM2931DT±5.0			369A	Surface Mount DPAK
LM2931DT±1±5.0			369	DPAK
LM2931T±5.0			221A	TO±220 Type
		±5.0%
LM2931Z±5.0			29	TO±92 Type
LM2931CD			751	SOP±8 Surface Mount
LM2931CD2T			936A	Surface Mount D2PAK
LM2931CT	Adjustable		314D	5±Pin TO±220 Type
LM2931CTH			314A	5±Pin Horizontal Leadform
LM2931CTV			314B	5±Pin Vertical Leadform
LM2931ACD			751	SOP±8 Surface Mount
LM2931ACD2T			936A	Surface Mount D2PAK
LM2931ACT	Adjustable	±2.0%	314D	5±Pin TO±220 Type
LM2931ACTH			314A	5±Pin Horizontal Leadform
LM2931ACTV			314B	5±Pin Vertical Leadform

Representative Schematic Diagram

Input

6.0
6.0 k		30 k
	350	6.8 V
		500
		Output
Output		Inhibit
30 k	30 k	50 k
30 k *		48 k	180 k	184 k	5.8 V
3.94 k
Adjust		EPI
3.0 k		Bias
92.8 k *
11.5 k		35 k		10 k
Ground

*Deleted on Adjustable Regulators

This device contains 26 active transistors.

2	MOTOROLA ANALOG IC DEVICE DATA

	LM2931 Series
MAXIMUM RATINGS
Rating	Symbol	Value	Unit
Input Voltage Continuous	VI	40	Vdc
Transient Input Voltage (τ ≤ 100 ms)	VI(τ)	60	Vpk
Transient Reverse Polarity Input Voltage	±VI(τ)	± 50	Vpk
1.0% Duty Cycle, τ ≤ 100 ms
Power Dissipation
Case 29 (TO±92 Type)
TA = 25°C	PD	Internally Limited	W
Thermal Resistance, Junction±to±Ambient	RθJA	178	°C/W
Thermal Resistance, Junction±to±Case	RθJC	83	°C/W
Case 221A, 314A, 314B and 314D (TO±220 Type)
TA = 25°C	PD	Internally Limited	W
Thermal Resistance, Junction±to±Ambient	RθJA	65	°C/W
Thermal Resistance, Junction±to±Case	RθJC	5.0	°C/W
Case 369 and 369A (DPAK) [Note 1]
TA = 25°C	PD	Internally Limited	W
Thermal Resistance, Junction±to±Ambient	RθJA	92	°C/W
Thermal Resistance, Junction±to±Case	RθJC	6.0	°C/W
Case 751 (SOP±8) [Note 2]
TA = 25°C	PD	Internally Limited	W
Thermal Resistance, Junction±to±Ambient	RθJA	160	°C/W
Thermal Resistance, Junction±to±Case	RθJC	25	°C/W
Case 936 and 936A (D2PAK) [Note 3]
TA = 25°C	PD	Internally Limited	W
Thermal Resistance, Junction±to±Ambient	RθJA	70	°C/W
Thermal Resistance, Junction±to±Case	RθJC	5.0	°C/W
Tested Operating Junction Temperature Range	TJ	± 40 to +125	°C
Storage Temperature Range	Tstg	± 65 to +150	°C

NOTES: 1. DPAK Junction±to±Ambient Thermal Resistance is for vertical mounting. Refer to Figure 24 for board mounted Thermal Resistance.

2.SOP±8 Junction±to±Ambient Thermal Resistance is for minimum recommended pad size. Refer to Figure 23 for Thermal Resistance variation versus pad size.

3.D2PAK Junction±to±Ambient Thermal Resistance is for vertical mounting. Refer to Figure 25 for board mounted Thermal Resistance.

4.ESD data available upon request.

ELECTRICAL CHARACTERISTICS (Vin = 14 V, IO = 10 mA, CO = 100 μF, CO(ESR) = 0.3 Ω, TJ = 25°C [Note 1].)

LM2931±5.0

LM2931A±5.0

Characteristic

Symbol

Unit

Min

Typ

Max

Min

Typ

Max

FIXED OUTPUT

Output Voltage

VO

V

Vin = 14 V, IO = 10 mA, TJ = 25°C

4.75

5.0

5.25

4.81

5.0

5.19

Vin = 6.0 V to 26 V, IO ≤ 100 mA, TJ = ± 40° to +125°C

4.50

±

5.50

4.75

±

5.25

Line Regulation

Regline

mV

Vin = 9.0 V to 16 V

±

2.0

10

±

2.0

10

Vin = 6.0 V to 26 V

±

4.0

30

±

4.0

30

Load Regulation (IO = 5.0 mA to 100 mA)

Regload

±

14

50

±

14

50

mV

Output Impedance

ZO

mΩ

IO = 10 mA, IO = 1.0 mA, f = 100 Hz to 10 kHz

±

200

±

±

200

±

Bias Current

IB

mA

Vin = 14 V, IO = 100 mA, TJ = 25°C

±

5.8

30

±

5.8

30

Vin = 6.0 V to 26 V, IO = 10 mA, TJ = ± 40° to +125°C

±

0.4

1.0

±

0.4

1.0

Output Noise Voltage (f = 10 Hz to 100 kHz)

Vn

±

700

±

±

700

±

μVrms

Long Term Stability

S

±

20

±

±

20

±

mV/kHR

NOTES: 1. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 2. The reference voltage on the adjustable device is measured from the output to the adjust pin across R1.

MOTOROLA ANALOG IC DEVICE DATA	3

LM2931 Series

ELECTRICAL CHARACTERISTICS (Vin = 14 V, IO = 10 mA, CO = 100 μF, CO(ESR) = 0.3 Ω, TJ = 25°C [Note 1].)

LM2931±5.0

LM2931A±5.0

Characteristic

Symbol

Unit

Min

Typ

Max

Min

Typ

Max

FIXED OUTPUT

Ripple Rejection (f = 120 Hz)

RR

60

90

±

60

90

±

dB

Dropout Voltage

VI±VO

V

IO = 10 mA

±

0.015

0.2

±

0.015

0.2

IO = 100 mA

±

0.16

0.6

±

0.16

0.6

Over±Voltage Shutdown Threshold

Vth(OV)

26

29.5

40

26

29.5

40

V

Output Voltage with Reverse Polarity Input (Vin = ±15 V)

±VO

± 0.3

0

±

± 0.3

0

±

V

ELECTRICAL CHARACTERISTICS (Vin = 14 V, IO = 10 mA, CO = 100 μF, CO(ESR) = 0.3 Ω, TJ = 25°C [Note 1].)

LM2931C

LM2931AC

Characteristic

Symbol

Min

Typ

Max

Min

Typ

Typ

Unit

ADJUSTABLE OUTPUT

Reference Voltage (Note 2, Figure 18)

Vref

V

IO = 10 mA, TJ = 25°C

1.14

1.20

1.26

1.17

1.20

1.23

IO ≤ 100 mA, TJ = ± 40 to +125°C

1.08

±

1.32

1.15

±

1.25

Output Voltage Range

VOrange

3.0 to

2.7 to

±

3.0 to

2.7 to

±

V

24

29.5

24

29.5

Line Regulation (Vin = VO + 0.6 V to 26 V)

Regline

±

0.2

1.5

±

0.2

1.5

mV/V

Load Regulation (IO = 5.0 mA to 100 mA)

Regload

±

0.3

1.0

±

0.3

1.0

%/V

Output Impedance

ZO

mΩ/V

IO = 10 mA, IO = 1.0 mA, f = 10 Hz to 10 kHz

±

40

±

±

40

±

Bias Current

IB

mA

IO = 100 mA

±

6.0

±

±

6.0

±

IO = 10 mA

±

0.4

1.0

±

0.4

1.0

Output Inhibited (Vth(OI) = 2.5 V)

±

0.2

1.0

±

0.2

1.0

Adjustment Pin Current

IAdj

±

0.2

±

±

0.2

±

μA

Output Noise Voltage (f = 10 Hz to 100 kHz)

Vn

±

140

±

±

140

±

μVrms/V

Long±Term Stability

S

±

0.4

±

±

0.4

±

%/kHR

Ripple Rejection (f = 120 Hz)

RR

0.10

0.003

±

0.10

0.003

±

%/V

Dropout Voltage

VI±VO

V

IO = 10 mA

±

0.015

0.2

±

0.015

0.2

IO = 100 mA

±

0.16

0.6

±

0.16

0.6

Over±Voltage Shutdown Threshold

Vth(OV)

26

29.5

40

26

29.5

40

V

Output Voltage with Reverse Polarity Input (Vin = ±15 V)

±VO

± 0.3

0

±

±0.3

0

±

V

Output Inhibit Threshold Voltages

Vth(OI)

V

Output ªOnº:

T = 25°C

±

2.15

1.90

±

2.15

1.90

J

TJ = ± 40° to +125°C

±

±

1.20

±

±

1.20

Output ªOffº:

T = 25°C

2.50

2.26

±

2.50

2.26

±

J

TJ = ± 40° to +125°C

3.25

±

±

3.25

±

±

Output Inhibit Threshold Current (Vth(OI) = 2.5 V)

Ith(OI)

±

30

50

±

30

50

μA

NOTES: 1. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 2. The reference voltage on the adjustable device is measured from the output to the adjust pin across R1.

4	MOTOROLA ANALOG IC DEVICE DATA

LM2931 Series

Figure 1. Dropout Voltage versus Output Current

	200
(mV)	160	Vin = 14 V
VOLTAGE		Vout	= 100 mV
		TJ = 25°C
	120
, DROPOUT	80
O
±V	40
in
V
	0	20	40	60	80	100
	0

IO, OUTPUT CURRENT (mA)

Figure 3. Peak Output Current versus Input Voltage

	350
(mA)			TJ = ±40°C			TJ = 25°C
CURRENT	250
OUTPUT,					TJ = 85°C
	150
O				Dashed lines below Vin = 5.0 V
I
				are for Adjustable output devices only.
	50	5.0	10	15	20	25	30
	0

Vin, INPUT VOLTAGE (V)

Figure 5. Output Voltage versus Input Voltage

	6.0
(V)	5.0						VCC = 15 V
VOLTAGE							VFB1 = 5.05 V
	4.0
, OUTPUT	3.0
	2.0
O							Vout = 5.0 V
V
	1.0						RL = 500 Ω
							TA = 25°C
	0
	±20	±10	0	10	20	30	40	50	60

Vin, INPUT VOLTAGE (V)

Figure 2. Dropout Voltage versus

Junction Temperature

	300
(mV)		Vin = 14 V
		Vout = 100 mV
DROPOUT VOLTAGE					IO = 100 mA
	200
	100
,					IO = 50 mA
O
±V
in					IO = 10 mA
V
	0	25	50	75	100	125
	0
			TJ, JUNCTION TEMPERATURE (°C)

Figure 4. Output Voltage versus Input Voltage

	6.0
(V)	5.0	Vout = 5.0 V
		TA = 25°C
VOLTAGE	4.0
	3.0
, OUTPUT
	2.0
O		RL = 50 Ω
V	1.0			IO = 100 mA
	0	1.0	2.0	3.0	4.0	5.0	6.0
	0
			Vin, INPUT VOLTAGE (V)

VOLTAGEINPUT	V/DIV)(10	Figure 6. Load Dump Characteristics
		TA = 25°C
		Vout = 5.0 V
		RL = 50 Ω
		CO = 100 μF
		τ = 150 ms
,
in
V
OUTPUTVOLTAGE		0
	V/DIV)(5.0	0
,
O		t, TIME (50 ms/DIV)
V

MOTOROLA ANALOG IC DEVICE DATA	5