LINEAR TECHNOLOGY LT3020, LT3020-1.2, LT3020-1.5, LT3020-1.8 Technical data

LT3014HVES5

FEATURES

■VIN Range: 0.9V to 10V

■Minimum Input Voltage: 0.9V

■Dropout Voltage: 150mV Typical

■Output Current: 100mA

■Adjustable Output (VREF = VOUT(MIN) = 200mV)

■Fixed Output Voltages: 1.2V, 1.5V, 1.8V

■Stable with Low ESR, Ceramic Output Capacitors (2.2µF Minimum)

■0.2% Load Regulation from 1mA to 100mA

■Quiescent Current: 120µA (Typ)

■3µA Typical Quiescent Current in Shutdown

■Current Limit Protection

■Reverse-Battery Protection

■No Reverse Current

■Thermal Limiting with Hysteresis

■8-Lead DFN (3mm × 3mm) and MSOP Packages

APPLICATIOUS

■Low Current Regulators

■Battery-Powered Systems

■Cellular Phones

■Pagers

■Wireless Modems

TYPICAL APPLICATIOU

1.8V to 1.5V, 100mA VLDO Regulator

VIN

IN

OUT

VOUT

1.5V

1.8V

LT3020-1.5

2.2 F 100mA

2.2 F

SHDN

GND

3020 TA01

100mA, Low Voltage,

Very Low Dropout

Linear Regulator

DESCRIPTIOU

The LT®3020 is a very low dropout voltage (VLDOTM) linear regulator that operates from input supplies down to 0.9V. This device supplies 100mA of output current with a typical dropout voltage of 150mV. The LT3020 is ideal for low input voltage to low output voltage applications, providing comparable electrical efficiency to that of a switching regulator.

The LT3020 regulator optimizes stability and transient response with low ESR, ceramic output capacitors as small as 2.2µF. Other LT3020 features include 0% typical line regulation and 0.2% typical load regulation. In shutdown, quiescent current drops to 3µA.

Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting with hysteresis, and reverse-current protection. The LT3020 is available as an adjustable output device with an output range down to the 200mV reference. Three fixed output voltages, 1.2V, 1.5V and 1.8V, are also available.

The LT3020 regulator is available in the low profile (0.75mm) 8-lead (3mm × 3mm) DFN package with Exposed Pad and the 8-lead MSOP package.

, LTC and LT are registered trademarks of Linear Technology Corporation. VLDO is a trademark of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

Minimum Input Voltage

1.1

IL = 100mA

	1.0
(V)	0.9
VOLTAGE	0.8
	0.7
INPUT	0.6
	0.5
MINIMUM
	0.4
	0.3
	0.2
	0.1
	0
			–25		0	25	50	75	100	125
	–50

TEMPERATURE (°C)

3020 TA02

3020fc

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LT3020/LT3020-1.2/ LT3020-1.5/LT3020-1.8

ABSOLUTE

WAXIWUW

RATIUGS (Note 1)

IN Pin Voltage ........................................................	±10V	Operating Junction Temperature Range
OUT Pin Voltage ....................................................	±10V	(Notes 2, 3) ..........................................	– 40°C to 125°C
Input-to-Output Differential Voltage .......................	±10V	Storage Temperature Range
ADJ Pin Voltage ....................................................	±10V	DD ....................................................	– 65°C to 125°C
SHDN Pin Voltage .................................................	±10V	MS8 ..................................................	– 65°C to 150°C
Output Short-Circut Duration ..........................	Indefinite	Lead Temperature (Soldering, 10 sec)..................	300°C

PACKAGE/ORDER IUFORWATIOU

ORDER PART NUMBER

ORDER PART NUMBER

			TOP VIEW		LT3020EDD			TOP VIEW		LT3020EDD-1.2
					LT3020IDD					LT3020EDD-1.5
	OUT	1	8	IN		OUT	1	8	IN	LT3020EDD-1.8
	OUT	2	7	IN		OUT	2	7	IN	LT3020IDD-1.2
			9			OUT		9	NC	LT3020IDD-1.5
	ADJ	3	6	NC			3	6
	GND	4	5	SHDN	DD PART MARKING	GND	4	5	SHDN	LT3020IDD-1.8
										DD PART MARKING
			DD PACKAGE		LAEX			DD PACKAGE
	8-LEAD (3mm × 3mm) PLASTIC DFN					8-LEAD (3mm × 3mm) PLASTIC DFN				LBKC
	TJMAX = 125°C, θJA = 35°C/ W*, θJC = 3°C/ W				LBYH	TJMAX = 125°C, θJA = 35°C/ W*, θJC = 3°C/ W
										LBKD
	EXPOSED PAD IS GND (PIN 9) CONNECT TO PIN 4					EXPOSED PAD IS GND (PIN 9) CONNECT TO PIN 4
	*SEE THE APPLICATIONS INFORMATION SECTION					*SEE THE APPLICATIONS INFORMATION SECTION				LBKF
										LBYJ
										LBYK
										LBYM

ORDER PART NUMBER

ORDER PART NUMBER

LT3020EMS8

LT3020EMS8-1.2

LT3020IMS8

LT3020EMS8-1.5

TOP VIEW

TOP VIEW

LT3020EMS8-1.8

OUT

1

8 IN

OUT

1

8 IN

LT3020IMS8-1.2

OUT

2

7 IN

OUT

2

7 IN

LT3020IMS8-1.5

ADJ

3

6 NC

OUT

3

6

NC

LT3020IMS8-1.8

GND

4

5

GND

4

5 SHDN

SHDN

MS8 PACKAGE

MS8 PACKAGE

MS8 PART MARKING

MS8 PART MARKING

8-LEAD PLASTIC MSOP

8-LEAD PLASTIC MSOP

TJMAX = 150°C, θJA = 125°C/ W, θJC = 40°C/ W

TJMAX = 150°C, θJA = 125°C/ W, θJC = 40°C/ W

LTAGL

LTBKG

SEE THE APPLICATIONS INFORMATION SECTION

SEE THE APPLICATIONS INFORMATION SECTION

LTBYN

LTBKH

LTBKJ

LTBYP

LTBYQ

LTBYR

Order Options Tape and Reel: Add #TR

Lead Free: Add #PBF

Lead Free Tape and Reel: Add #TRPBF

Lead Free Part Marking: http://www.linear.com/leadfree/

Consult LTC Marketing for parts specified with wider operating temperature ranges.

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LT3020/LT3020-1.2/

LT3020-1.5/LT3020-1.8

ELECTRICAL CHARACTERISTICS

The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are TJ = 25°C.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Input Voltage (Note 14)

ILOAD = 100mA, TJ > 0°C

0.9

1.05

V

ILOAD = 100mA, TJ < 0°C

0.9

1.10

V

ADJ Pin Voltage (Notes 4, 5)

VIN = 1.5V, ILOAD = 1mA

196

200

204

mV

1.15V < VIN < 10V, 1mA < ILOAD < 100mA

●

193

200

206

mV

Regulated Output Voltage

LT3020-1.2

VIN = 1.5V, ILOAD = 1mA

1.176

1.200

1.224

V

(Note 4)

1.5V < VIN < 10V, 1mA < ILOAD < 100mA

●

1.157

1.200

1.236

V

LT3020-1.5

VIN = 1.8V, ILOAD = 1mA

1.470

1.500

1.530

V

1.8V < VIN < 10V, 1mA < ILOAD < 100mA

●

1.447

1.500

1.545

V

LT3020-1.8

VIN = 2.1V, ILOAD = 1mA

1.764

1.800

1.836

V

2.1V < VIN < 10V, 1mA < ILOAD < 100mA

●

1.737

1.800

1.854

V

Line Regulation (Note 6)

∆VIN = 1.15V to 10V, ILOAD = 1mA

●

–1.75

0

1.75

mV

LT3020-1.2

∆VIN = 1.5V to 10V, ILOAD = 1mA

●

–10.5

0

10.5

mV

LT3020-1.5

∆VIN = 1.8V to 10V, ILOAD = 1mA

●

–13

0

13

mV

LT3020-1.8

∆VIN = 2.1V to 10V, ILOAD = 1mA

●

–15.8

0

15.8

mV

Load Regulation (Note 6)

VIN = 1.15V, ∆ILOAD = 1mA to 100mA

–1

0.4

1

mV

LT3020-1.2

VIN = 1.5V, ∆ILOAD = 1mA to 100mA

–6

1

6

mV

LT3020-1.5

VIN = 1.8V, ∆ILOAD = 1mA to 100mA

–7.5

1.5

7.5

mV

LT3020-1.8

VIN = 2.1V, ∆ILOAD = 1mA to 100mA

–9

2

9

mV

Dropout Voltage (Notes 7, 12)

ILOAD = 10mA

85

115

mV

ILOAD = 10mA

●

180

mV

ILOAD = 100mA

150

180

mV

ILOAD = 100mA

●

285

mV

GND Pin Current

ILOAD = 0mA

●

120

250

A

VIN = VOUT(NOMINAL)

ILOAD = 1mA

570

A

(Notes 8, 12)

ILOAD = 10mA

920

A

ILOAD = 100mA

●

2.25

3.5

mA

Output Voltage Noise

COUT = 2.2 F, ILOAD = 100mA, BW = 10Hz to 100kHz, VOUT = 1.2V

245

VRMS

ADJ Pin Bias Current

VADJ = 0.2V, RIPPLE = 1.2V (Notes 6, 9)

20

50

nA

Shutdown Threshold

VOUT = Off to On

●

0.61

0.9

V

VOUT = On to Off

●

0.25

0.61

V

Pin Current (Note 10)

V

= 0V, VIN = 10V

±1

A

SHDN

●

SHDN

V

= 10V, VIN = 10V

●

3

9.5

A

SHDN

Quiescent Current in Shutdown

VIN = 6V, V

= 0V

3

9

A

SHDN

Ripple Rejection (Note 6)

VIN – VOUT = 1V, VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, ILOAD = 100mA

64

dB

LT3020-1.2 VIN – VOUT = 1V, VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz,

60

dB

ILOAD = 100mA

LT3020-1.5 VIN – VOUT = 1V, VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz,

58

dB

ILOAD = 100mA

LT3020-1.8 VIN – VOUT = 1V, VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz,

56

dB

ILOAD = 100mA

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LT3020/LT3020-1.2/

LT3020-1.5/LT3020-1.8

ELECTRICAL CHARACTERISTICS

The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are TJ = 25°C.

PARAMETER	CONDITIONS			MIN	TYP	MAX	UNITS
Current Limit (Note 12)	VIN = 10V, VOUT = 0V				360		mA
	VIN = VOUT(NOMINAL) + 0.5V, ∆VOUT = –5%		●	110	310		mA
Input Reverse Leakage Current	VIN = –10V, VOUT = 0V				1	10	A
Reverse Output Current	VOUT = 1.2V, VIN = 0V				3	5	A
(Notes 11, 13)	LT3020-1.2	VOUT = 1.2V, VIN = 0V			10	15	A
	LT3020-1.5	VOUT = 1.5V, VIN = 0V			10	15	A
	LT3020-1.8	VOUT = 1.8V, VIN = 0V			10	15	A

Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.

Note 2: The LT3020 regulators are tested and specified under pulse load conditions such that TJ ≈ TA. The LT3020E is 100% production tested at TA = 25°C. Performance at –40°C and 125°C is assured by design, characterization and correlation with statistical process controls. The LT3020I is guaranteed over the full –40°C to 125°C operating junction temperature range.

Note 3: This IC includes overtemperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 125°C when overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability.

Note 4: Maximum junction temperature limits operating conditions. The regulated output voltage specification does not apply for all possible combinations of input voltage and output current. Limit the output current range if operating at maximum input voltage. Limit the input voltage range if operating at maximum output current.

Note 5: Typically the LT3020 supplies 100mA output current with a 1V input supply. The guaranteed minimum input voltage for 100mA output current is 1.10V.

Note 6: The LT3020 is tested and specified for these conditions with an external resistor divider (20k and 30.1k) setting VOUT to 0.5V. The external resistor divider adds 10 A of output load current. The line regulation and load regulation specifications refer to the change in the 0.2V reference voltage, not the 0.5V output voltage. Specifications for fixed output voltage devices are referred to the output voltage.

Note 7: Dropout voltage is the minimum input to output voltage differential needed to maintain regulation at a specified output current. In dropout the output voltage equals: (VIN – VDROPOUT).

Note 8: GND pin current is tested with VIN = VOUT(NOMINAL) and a current source load. The device is tested while operating in its dropout region.

This condition forces the worst-case GND pin current. GND pin current decreases at higher input voltages.

Note 9: Adjust pin bias current flows out of the ADJ pin.

Note 10: Shutdown pin current flows into the SHDN pin.

Note 11: Reverse output current is tested with IN grounded and OUT forced to the rated output voltage. This current flows into the OUT pin and out of the GND pin. For fixed voltage devices this includes the current in the output resistor divider.

Note 12: The LT3020 is tested and specified for these conditions with an external resistor divider (20k and 100k) setting VOUT to 1.2V. The external resistor divider adds 10 A of load current.

Note 13: Reverse current is higher for the case of (rated_output) < VOUT < VIN, because the no-load recovery circuitry is active in this region and is trying to restore the output voltage to its nominal value.

Note 14: Minimum input voltage is the minimum voltage required by the control circuit to regulate the output voltage and supply the full 100mA rated current. This specification is tested at VOUT = 0.5V. At higher output voltages the minimum input voltage required for regulation will be equal to the regulated output voltage VOUT plus the dropout voltage.

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LT3020/LT3020-1.2/

LT3020-1.5/LT3020-1.8

TYPICAL PERFORWAUCE CHARACTERISTICS

DROPOUT VOLTAGE (mV)

	Typical Dropout Voltage																								Dropout Voltage
250																								250
																										VOUT = 1.2V
225																								225
																																				I	L = 100mA
200																								200
								TJ =		125°		C											(mV)
175																								175
150																							VOLTAGE	150
																																							IL =		50mA
125																								125
																							DROPOUT																	IL =	10mA
													°
100											TJ = 25 C													100
75																								75
50																								50
																																								IL =	1mA
25																								25
0																								0
		10		20		30			40		50		60		70		80		90		100						–25		0		25		50		75					100		125
0																								–50
						OUTPUT CURRENT (mA)																								TEMPERATURE (°C)
																			3020 G01																						3020 G02

QUIESCENT CURRENT ( A)

Quiescent Current

250

VIN = 6V 225 VOUT = 1.2V

IL = 0

200

175
150
125
					V				= VIN
100							SHDN
75
50
25
						V				=	0V
								SHDN
0
		–25	0	25	50				75				100	125
–50

TEMPERATURE (°C)

3020 G03

ADJ PIN VOLTAGE (mV)

ADJ Pin Voltage

206

IL = 1mA

204

202

200

198

196

194 –50 –25 0 25 50 75 100 125

TEMPERATURE (°C)

3020 G04

Output Voltage

	1.830
		IL = 1mA
(V)	1.820
	1.810
VOLTAGE
	1.800
OUTPUT
	1.790
	1.780
	1.770
			–25		0		25		50		75		100		125
	–50

TEMPERATURE (°C)

3020 G22

Output Voltage

	1.530
		IL = 1mA
(V)	1.520
	1.510
VOLTAGE
	1.500
OUTPUT
	1.490
	1.480
	1.470
			–25		0		25		50		75		100		125
	–50

TEMPERATURE (°C)

3020 G23

Output Voltage

	1.230
		IL = 1mA
(V)	1.220
	1.210
VOLTAGE
	1.200
OUTPUT
	1.190
	1.180
	1.170
			–25		0	25		50		75		100		125
	–50

TEMPERATURE (°C)

3020 G24

	Quiescent Current																								GND Pin Current
	1000																								2500
			VOUT = 1.2V																																										VOUT = 1.2V
	900		IL = 0																						2250																				TJ = 25°C
CURRENTQUIESCENT( A)	800		TJ = 25°C																						2000
	700																								1750								RL	= 12				Ω
																																	IL = 100mA
																									CURRENTPINGNDA)(
	600																								1500
	500																								1250
																															RL = 24Ω
	400																								1000						IL = 50mA
	300																								750
																														RL =		120		Ω
	200																								500					IL =		10mA
										VSHDN = VIN
	100																								250				R	L = 1.2k, IL = 1mA
										V			= 0V
	0										SHDN														0
			1		2		3			4	5				6			7		8	9		10				1		2		3		4				5		6			7			8	9		10
	0																								0
							INPUT VOLTAGE (V)																								INPUT VOLTAGE (V)
																					3020 G05																									3020 G06

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