LINER LT3014B

LT3009 Series
3µA IQ, 20mA
Low Dropout Linear Regulators
FEATURES
DESCRIPTION
n
The LT®3009 Series are micropower, low dropout voltage
(LDO) linear regulators. The devices supply 20mA output
current with a dropout voltage of 280mV. No-load quiescent
current is 3μA. Ground pin current remains at less than
5% of output current as load increases. In shutdown,
quiescent current is less than 1μA.
n
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Ultralow Quiescent Current: 3μA
Input Voltage Range: 1.6V to 20V
Output Current: 20mA
Dropout Voltage: 280mV
Adjustable Output (VADJ = VOUT(MIN) = 600mV)
Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2.5V,
3.3V, 5V
Output Tolerance: ±2% Over Load, Line and Temperature
Stable with Low ESR, Ceramic Output Capacitors
(1μF minimum)
Shutdown Current: <1μA
Current Limit Protection
Reverse-Battery Protection
Thermal Limit Protection
8-Lead SC70 and 2mm × 2mm DFN Packages
APPLICATIONS
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Low Current Battery-Powered Systems
Keep-Alive Power Supplies
Remote Monitoring
Utility Meters
Hotel Door Locks
The LT3009 regulators optimize stability and transient
response with low ESR ceramic capacitors, requiring a
minimum of only 1μF. The regulators do not require the
addition of ESR as is common with other regulators.
Internal protection circuitry includes current limiting,
thermal limiting, reverse-battery protection and reversecurrent protection.
The LT3009 Series are ideal for applications that require
moderate output drive capability coupled with ultralow
standby power consumption. The device is available in
fixed output voltages of 1.2V, 1.5V, 1.8V, 2.5V, 3.3V and 5V,
and as an adjustable device with an output voltage range
down to the 600mV reference. The LT3009 is available in
the 6-lead DFN and 8-lead SC70 packages.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
3.3V, 20mA Supply with Shutdown
Dropout Voltage/Quiescent Current
500
1μF
1μF
VOUT
3.3V
20mA
LT3009-3.3
SHDN
GND
3009 TA01a
DROPOUT VOLTAGE (mV)
OUT
5.0
ILOAD = 20mA
4.5
4.0
400
350
DROPOUT
VOLTAGE
300
250
IQ
3.5
3.0
2.5
200
2.0
150
1.5
100
1.0
50
0.5
0
–50 –25
0
QUIESCENT CURRENT (μA)
VIN
3.75V TO
20V
IN
450
0
25 50 75 100 125 150
TEMPERATURE (°C)
3009 TA01b
3009fd
1
LT3009 Series
ABSOLUTE MAXIMUM RATINGS
(Note 1)
IN Pin Voltage .........................................................±22V
OUT Pin Voltage ......................................................±22V
Input-to-Output Differential Voltage ........................±22V
ADJ Pin Voltage ......................................................±22V
SHDN Pin Voltage (Note 8) .....................................±22V
Output Short-Circuit Duration .......................... Indefinite
Operating Junction Temperature Range (Notes 2, 3)
(E, I Grades) ......................................–40°C to 125°C
Storage Temperature Range...................–65°C to 150°C
Lead Temperature: Soldering, 10 sec
SC8 Package Only ............................................. 300°C
PIN CONFIGURATION
TOP VIEW
TOP VIEW
6 GND
ADJ/NC* 1
OUT 2
7
OUT 3
SHDN
GND
GND
GND
5 SHDN
4 IN
DC PACKAGE
6-LEAD (2mm s 2mm) PLASTIC DFN
TJMAX = 125°C, θJA = 65°C/W TO 85°C/W**
EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB
1
2
3
4
8
7
6
5
NC
ADJ/NC*
OUT
IN
SC8 PACKAGE
8-LEAD PLASTIC SC70
TJMAX = 125°C, θJA = 75°C/W TO 95°C/W**
* The ADJ pin is not connected in fixed output voltage versions.
** See the Applications Information section.
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3009EDC#PBF
LT3009EDC#TRPBF
LCQX
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009IDC#PBF
LT3009IDC#TRPBF
LCQX
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009EDC-1.2#PBF
LT3009EDC-1.2#TRPBF
LDTW
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009IDC-1.2#PBF
LT3009IDC-1.2#TRPBF
LDTW
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009EDC-1.5#PBF
LT3009EDC-1.5#TRPBF
LDVB
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009IDC-1.5#PBF
LT3009IDC-1.5#TRPBF
LDVB
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009EDC-1.8#PBF
LT3009EDC-1.8#TRPBF
LDKC
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009IDC-1.8#PBF
LT3009IDC-1.8#TRPBF
LDKC
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009EDC-2.5#PBF
LT3009EDC-2.5#TRPBF
LDTY
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009IDC-2.5#PBF
LT3009IDC-2.5#TRPBF
LDTY
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009EDC-3.3#PBF
LT3009EDC-3.3#TRPBF
LDKD
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009IDC-3.3#PBF
LT3009IDC-3.3#TRPBF
LDKD
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009EDC-5#PBF
LT3009EDC-5#TRPBF
LDKF
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009IDC-5#PBF
LT3009IDC-5#TRPBF
LDKF
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
3009fd
2
LT3009 Series
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3009ESC8#PBF
LT3009ESC8#TRPBF
LCQY
8-Lead Plastic SC70
–40°C to 125°C
LT3009ESC8-1.2#PBF
LT3009ESC8-1.2#TRPBF
LDTX
8-Lead Plastic SC70
–40°C to 125°C
LT3009ESC8-1.5#PBF
LT3009ESC8-1.5#TRPBF
LDVC
8-Lead Plastic SC70
–40°C to 125°C
LT3009ESC8-1.8#PBF
LT3009ESC8-1.8#TRPBF
LDKG
8-Lead Plastic SC70
–40°C to 125°C
LT3009ESC8-2.5#PBF
LT3009ESC8-2.5#TRPBF
LDTZ
8-Lead Plastic SC70
–40°C to 125°C
LT3009ESC8-3.3#PBF
LT3009ESC8-3.3#TRPBF
LDKH
8-Lead Plastic SC70
–40°C to 125°C
LT3009ESC8-5#PBF
LT3009ESC8-5#TRPBF
LDKJ
8-Lead Plastic SC70
–40°C to 125°C
LEAD BASED FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3009EDC
LT3009EDC#TR
LCQX
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009IDC
LT3009IDC#TR
LCQX
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009EDC-1.2
LT3009EDC-1.2#TR
LDTW
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009IDC-1.2
LT3009IDC-1.2#TR
LDTW
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009EDC-1.5
LT3009EDC-1.5#TR
LDVB
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009IDC-1.5
LT3009IDC-1.5#TR
LDVB
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009EDC-1.8
LT3009EDC-1.8#TR
LDKC
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009IDC-1.8
LT3009IDC-1.8#TR
LDKC
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009EDC-2.5
LT3009EDC-2.5#TR
LDTY
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009IDC-2.5
LT3009IDC-2.5#TR
LDTY
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009EDC-3.3
LT3009EDC-3.3#TR
LDKD
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009IDC-3.3
LT3009IDC-3.3#TR
LDKD
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009EDC-5
LT3009EDC-5#TR
LDKF
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009IDC-5
LT3009IDC-5#TR
LDKF
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LT3009ESC8
LT3009ESC8#TR
LCQY
8-Lead Plastic SC70
–40°C to 125°C
LT3009ESC8-1.2
LT3009ESC8-1.2#TR
LDTX
8-Lead Plastic SC70
–40°C to 125°C
LT3009ESC8-1.5
LT3009ESC8-1.5#TR
LDVC
8-Lead Plastic SC70
–40°C to 125°C
LT3009ESC8-1.8
LT3009ESC8-1.8#TR
LDKG
8-Lead Plastic SC70
–40°C to 125°C
LT3009ESC8-2.5
LT3009ESC8-2.5#TR
LDTZ
8-Lead Plastic SC70
–40°C to 125°C
LT3009ESC8-3.3
LT3009ESC8-3.3#TR
LDKH
8-Lead Plastic SC70
–40°C to 125°C
LT3009ESC8-5
LT3009ESC8-5#TR
LDKJ
8-Lead Plastic SC70
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
3009fd
3
LT3009 Series
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TJ = 25°C. (Note 2)
PARAMETER
CONDITIONS
MIN
l
1.6
LT3009-1.2: VIN = 1.7V, ILOAD = 100μA
1.7V < VIN < 20V, 1μA < ILOAD < 20mA
l
1.188
1.176
LT3009-1.5: VIN = 2V, ILOAD = 100μA
2V < VIN < 20V, 1μA < ILOAD < 20mA
l
LT3009-1.8: VIN = 2.3V, ILOAD = 100μA
2.3V < VIN < 20V, 1μA < ILOAD < 20mA
TYP
MAX
UNITS
20
V
1.2
1.2
1.212
1.224
V
V
1.485
1.470
1.5
1.5
1.515
1.530
V
V
l
1.782
1.764
1.8
1.8
1.818
1.836
V
V
LT3009-2.5: VIN = 3V, ILOAD = 100μA
3V < VIN < 20V, 1μA < ILOAD < 20mA
l
2.475
2.45
2.5
2.5
2.525
2.55
V
V
LT3009-3.3: VIN = 3.8V, ILOAD = 100μA
3.8V < VIN < 20V, 1μA < ILOAD < 20mA
l
3.267
3.234
3.3
3.3
3.333
3.366
V
V
LT3009-5: VIN = 5.5V, ILOAD = 100μA
3.8V < VIN < 20V, 1μA < ILOAD < 20mA
l
4.950
4.900
5
5
5.050
5.100
V
V
ADJ Pin Voltage (Notes 3, 4)
VIN = 1.6V, ILOAD = 100μA
1.6V < VIN < 20V, 1μA < ILOAD < 20mA
l
594
588
600
600
606
612
mV
mV
Line Regulation (Note 3)
LT3009-1.2:
LT3009-1.5:
LT3009-1.8:
LT3009-2.5:
LT3009-3.3:
LT3009-5:
LT3009:
VIN = 1.7V to 20V, ILOAD = 1mA
VIN = 2.0V to 20V, ILOAD = 1mA
VIN = 2.3V to 20V, ILOAD = 1mA
VIN = 3.0V to 20V, ILOAD = 1mA
VIN = 3.8V to 20V, ILOAD = 1mA
VIN = 5.5V to 20V, ILOAD = 1mA
VIN = 1.6V to 20V, ILOAD = 1mA
l
l
l
l
l
l
l
0.8
1.0
1.2
1.7
2.2
3.3
0.4
3.0
3.8
4.5
6.3
8.3
12.5
1.5
mV
mV
mV
mV
mV
mV
mV
Load Regulation (Note 3)
LT3009-1.2:
LT3009-1.5:
LT3009-1.8:
LT3009-2.5:
LT3009-3.3:
LT3009-5:
LT3009:
VIN = 1.7V, ILOAD = 1μA to 20mA
VIN = 2V, ILOAD = 1μA to 20mA
VIN = 2.3V, ILOAD = 1μA to 20mA
VIN = 3V, ILOAD = 1μA to 20mA
VIN = 3.8V, ILOAD = 1μA to 20mA
VIN = 5.5V, ILOAD = 1μA to 20mA
VIN = 1.6V, ILOAD = 1μA to 20mA
l
l
l
l
l
l
l
1.4
1.8
2.1
2.9
3.9
5.8
0.7
6
7.5
9.0
12.5
16.5
25
3
mV
mV
mV
mV
mV
mV
mV
Dropout Voltage
VIN = VOUT(NOMINAL) (Notes 5, 6)
ILOAD = 100μA
ILOAD = 100μA
l
115
180
250
mV
mV
ILOAD = 1mA
ILOAD = 1mA
l
170
250
350
mV
mV
ILOAD = 10mA
ILOAD = 10mA
l
250
310
410
mV
mV
ILOAD = 20mA
ILOAD = 20mA
l
280
350
450
mV
mV
ILOAD = 0μA
ILOAD = 0μA
l
6
μA
μA
ILOAD = 0μA
ILOAD = 100μA
ILOAD = 1mA
ILOAD = 10mA
ILOAD = 20mA
l
l
l
l
l
6
12
50
500
1000
μA
μA
μA
μA
μA
Operating Voltage
Regulated Output Voltage (Note 4)
Quiescent Current (Notes 6, 7)
GND Pin Current
VIN = VOUT(NOMINAL) + 0.5V (Notes 6, 7)
3
3
6
23
200
450
3009fd
4
LT3009 Series
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TJ = 25°C. (Note 2)
PARAMETER
CONDITIONS
MIN
Output Voltage Noise (Note 9)
COUT = 1μF, ILOAD = 20mA, BW = 10Hz to 100kHz
TYP
MAX
150
UNITS
μVRMS
l
–10
0.3
10
nA
VOUT = Off to On
VOUT = On to Off
l
l
0.66
0.36
1.5
0.2
V
V
VSHDN = 0V, VIN = 20V
VSHDN = 20V, VIN = 20V
l
l
±1
1.6
μA
μA
Quiescent Current in Shutdown
VIN = 6V, VSHDN = 0V
l
<1
μA
Ripple Rejection (Note 3)
VIN – VOUT = 1.5V, VRIPPLE = 0.5VP-P,
fRIPPLE = 120Hz, ILOAD = 20mA
ADJ Pin Bias Current
Shutdown Threshold
SHDN Pin Current
LT3009
LT3009-1.2
LT3009-1.5
LT3009-1.8
LT3009-2.5
LT3009-3.3
LT3009-5
Current Limit
60
57
55.5
54
52
49
44
VIN = 20V, VOUT = 0
VIN = VOUT(NOMINAL) + 1V, VOUT = – 5%
l
Input Reverse Leakage Current
VIN = –20V, VOUT = 0
l
Reverse Output Current
VOUT = 1.2V, VIN = 0
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3009 regulators are tested and specified under pulse
load conditions such that TJ ≈ TA. The LT3009E is guaranteed to meet
performance specifications from 0°C to 125°C operating junction
temperature. Specifications over the –40 °C to 125°C operating junction
temperature range are assured by design, characterization and correlation
with statistical process controls. The LT3009I is guaranteed over the full
–40°C to 125°C operating junction temperature range.
Note 3: The LT3009 adjustable version is tested and specified for these
conditions with the ADJ pin connected to the OUT pin.
Note 4: Operating conditions are limited by maximum junction temperature.
The regulated output voltage specification will not apply for all possible
combinations of input voltage and output current. When operating at the
maximum input voltage, the output current range must be limited. When
operating at the maximum output current, the input voltage must be limited.
Note 5: Dropout voltage is the minimum input to output voltage differential
needed to maintain regulation at a specified output current. In dropout,
0.5
72
68
67
66
63
61
56
dB
dB
dB
dB
dB
dB
dB
60
mA
mA
22
200
350
μA
0.6
10
μA
the output voltage equals (VIN – VDROPOUT). For the LT3009-1.2, dropout
voltage will be limited by the minimum input voltage under some voltage/
load conditions.
Note 6: To satisfy minimum input voltage requirements, the LT3009
adjustable version is tested and specified for these conditions with an
external resistor divider (61.9k bottom, 280k top) which sets VOUT to 3.3V.
The external resistor divider adds 9.69μA of DC load on the output. This
external current is not factored into GND pin current.
Note 7: GND pin current is tested with VIN = VOUT(NOMINAL) + 0.5V and a
current source load. GND pin current will increase in dropout. For the fixed
output voltage versions, an internal resistor divider will add to the GND
pin current ( 2μA for the LT3009-5, 1μA for the LT3009-1.2, LT3009-1.5,
LT3009-1.8, LT3009-2.5 and LT3009-3.3). See the GND Pin Current curves
in the Typical Performance Characteristics section.
Note 8: The SHDN pin can be driven below GND only when tied to the IN
pin directly or through a pull-up resistor. If the SHDN pin is driven below
GND by more than –0.3V while IN is powered, the output will turn on.
Note 9: Output noise is listed for the adjustable version with the ADJ pin
connected to the OUT pin. See the RMS Output Noise vs Load Current
curve in the Typical Performance Characteristics Section.
3009fd
5
LT3009 Series
TYPICAL PERFORMANCE CHARACTERISTICS
Dropout Voltage
Dropout Voltage
ILOAD = 20mA
TA = 125°C
350
DROPOUT VOLTAGE (mV)
DROPOUT VOLTAGE (mV)
400
300
TA = 25°C
250
200
150
100
50
Minimum Input Voltage
450
1.6
400
1.4
350
300
10mA
20mA
250
200
1mA
100μA
150
100
0
0
5
10
15
OUTPUT CURRENT (mA)
20
1
0.8
0.6
0.4
0
25
50
75
100 125 150
–50 –25
1.224
1.220
1.530
ILOAD = 100μA
1.525
1.515
0.598
0.596
0.594
OUTPUT VOLTAGE (V)
1.520
1.212
OUTPUT VOLTAGE (V)
1.216
0.606
0.600
1.208
1.204
1.200
1.196
1.192
1.188
1.510
1.505
1.500
1.495
1.490
1.485
1.184
1.480
0.590
1.180
1.176
–50 –25
1.475
1.470
–50 –25
25
50
75
100 125 150
0
25
50
75
TEMPERATURE (°C)
TEMPERATURE (°C)
100 125 150
ILOAD = 100μA
0.592
0
75
Output Voltage
LT3009-1.5
0.608
0.602
50
3009 G03
Output Voltage
LT3009-1.2
0.604
25
TEMPERATURE (°C)
3009 G02
ILOAD = 100μA
0.588
–50 –25
0
TEMPERATURE (°C)
ADJ Pin Voltage
ADJ PIN VOLTAGE (V)
1.2
0
–50 –25
3009 G01
0.610
ILOAD = 20mA
0.2
50
0
0.612
MINIMUM INPUT VOLTAGE (V)
450
TA = 25°C, unless otherwise noted.
100 125 150
0
25
50
75
TEMPERATURE (°C)
3009 G27
100 125 150
3009 G28
3009 G04
Output Voltage
LT3009-1.8
1.830
2.55
ILOAD = 100μA
2.54
1.812
1.806
1.800
1.794
1.788
1.782
3.355
2.52
2.51
2.50
2.49
2.48
0
25
50
75
100 125 150
TEMPERATURE (°C)
0
25
50
75
TEMPERATURE (°C)
3009 G05
3.333
3.322
3.311
3.300
3.289
3.278
3.267
3.256
2.46
2.45
–50 –25
ILOAD = 100μA
3.344
2.47
1.776
1.770
1.764
–50 –25
3.366
ILOAD = 100μA
2.53
1.818
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
1.824
Output Voltage
LT3009-3.3
OUTPUT VOLTAGE (V)
1.836
Output Voltage
LT3009-2.5
100 125 150
3009 G29
3.245
3.234
–50 –25
0
25
50
75
100 125 150
TEMPERATURE (°C)
3009 G06
3009fd
6
LT3009 Series
TYPICAL PERFORMANCE CHARACTERISTICS
Output Voltage
LT3009-5
6
10
ILOAD = 100μA
8
ADJ PIN BIAS CURRENT (nA)
5.075
OUTPUT VOLTAGE (V)
Adjustable Version
Quiescent Current
ADJ Pin Bias Current
5.050
5.025
5.000
4.975
4.950
4.925
5
6
QUIESCENT CURRENT (μA)
5.100
4
2
0
–2
–4
–6
4
3
2
1
–8
4.900
–50 –25
0
25
50
75
0
–10
–50 –25
100 125 150
0
TEMPERATURE (°C)
25
50
75
100 125 150
20
12
10
8
6
16
450
14
400
12
10
8
6
300
250
150
100
50
0
0
0
2
3 4 5 6 7
INPUT VOLTAGE (V)
8
9
10
3009 G10
0
1
2
3 4 5 6 7
INPUT VOLTAGE (V)
8
9
10
3009 G30
RL = 120Ω, IL = 10mA
200
2
1
RL = 60Ω, IL = 20mA
350
4
0
100 125 150
500
2
4
75
GND Pin Current
LT3009-1.2
GND PIN CURRENT (μA)
14
50
3009 G09
LT3009-2.5
LT3009-3.3
LT3009-5
18
QUIESCENT CURRENT (μA)
16
25
TEMPERATURE (°C)
Quiescent Current
LT3009-1.2
LT3009-1.5
LT3009-1.8
18
0
3009 G08
Quiescent Current
20
–50 –25
TEMPERATURE (°C)
3009 G07
QUIESCENT CURRENT (μA)
TA = 25°C, unless otherwise noted.
RL = 12k, IL = 100μA
RL = 1.2k, IL = 1mA
0
1
2
3 4 5 6 7
INPUT VOLTAGE (V)
8
9
10
3009 G31
3009fd
7
LT3009 Series
TYPICAL PERFORMANCE CHARACTERISTICS
GND Pin Current
LT3009-1.5
GND Pin Current
LT3009-1.8
500
500
450
GND PIN CURRENT (μA)
350
300
250
RL = 150Ω, IL = 10mA
200
150
100
300
250
RL = 180Ω, IL = 10mA
200
150
0
350
300
250
150
100
2
3 4 5 6 7
INPUT VOLTAGE (V)
8
9
10
0
1
2
3009 G32
450
450
400
RL = 165Ω, IL = 20mA
GND PIN CURRENT (μA)
400
300
250
RL = 330Ω, IL = 10mA
150
100
10
2
3 4 5 6 7
INPUT VOLTAGE (V)
8
9
2
3 4 5 6 7
INPUT VOLTAGE (V)
8
9
10
GND Pin Current vs ILOAD
VIN = 3.8V
VOUT = 3.3V
350
300
250
RL = 500Ω, IL = 10mA
200
150
100
10
RL = 50k, IL = 100μA
RL = 5k, IL = 1mA
0
1
1
3009 G33
1000
RL = 250Ω, IL = 20mA
50
0
0
0
100
RL = 33k, IL = 100μA
RL = 3.3k, IL = 1mA
50
9
8
GND Pin Current
LT3009-5
500
200
3 4 5 6 7
INPUT VOLTAGE (V)
3009 G11
GND Pin Current
LT3009-3.3
350
RL = 2.5k, IL = 1mA
0
GND CURRENT (μA)
1
RL = 25k, IL = 100μA
50
RL = 1.8k, IL = 1mA
0
0
RL = 250Ω, IL = 10mA
200
RL = 18k, IL = 100μA
50
RL = 1.5k, IL = 1mA
RL = 125Ω, IL = 20mA
400
350
100
RL = 15k, IL = 100μA
50
450
RL = 90Ω, IL = 20mA
400
GND PIN CURRENT (μA)
RL = 75Ω, IL = 20mA
400
GND PIN CURRENT (μA)
GND Pin Current
LT3009-2.5
500
450
GND PIN CURRENT (μA)
TA = 25°C, unless otherwise noted.
10
3009 G12
0
1
2
3 4 5 6 7
INPUT VOLTAGE (V)
8
9
10
1
0.001
0.01
0.1
1
LOAD (mA)
10
100
3009 G13
3009 G14
3009fd
8
LT3009 Series
TYPICAL PERFORMANCE CHARACTERISTICS
SHDN Pin Thresholds
SHDN Pin Input Current
1.2
1.0
0.8
OFF TO ON
0.6
ON TO OFF
0.2
1600
450
1400
400
350
300
250
200
150
100
0
25
50
75
0
100 125 150
0
2
4
50
VIN = 20V
REVERSE OUTPUT CURRENT (μA)
VIN = 1.6V
40
30
20
10
50
75
100 125 150
35
30
25
OUT
20
15
10
ADJ
3009 G18
75
100 125 150
70
60
50
40
4.7μF
30
20
1μF
10
–50 –25
0
25
50
75
100 125 150
TEMPERATURE (°C)
TEMPERATURE (°C)
50
VIN = 2V + 50mVRMS
VOUT = 600mV
ILOAD = 20mA
80
40
0
25
25
Input Ripple Rejection
90
5
0
0
3009 G17
OUT = ADJ = 1.2V
IN = SHDN = GND
45
50
–50 –25
TEMPERATURE (°C)
Reverse Output Current
Current Limit
–50 –25
400
3009 G16
70
0
600
0
6 8 10 12 14 16 18 20
SHDN PIN VOLTAGE (V)
3009 G15
60
800
200
TEMPERATURE (°C)
CURRENT LIMIT (mA)
1000
50
–50 –25
VSHDN = 20V
1200
INPUT RIPPLE REJECTION (dB)
0
SHDN Pin Input Current
500
SHDN PIN INPUT CURRENT (nA)
SHDN PIN INPUT CURRENT (nA)
SHDN PIN THRESHOLD VOLTAGE (V)
1.4
0.4
TA = 25°C, unless otherwise noted.
3009 G19
0
10
100
1k
10k
FREQUENCY (Hz)
100k
1M
3009 G20
3009fd
9
LT3009 Series
TYPICAL PERFORMANCE CHARACTERISTICS
3.0
70
2.5
60
2.0
50
40
30
20
VIN = VOUT (NOMINAL) + 1V + 0.5VP-P
RIPPLE AT f = 120Hz
ILOAD = 20mA
10
0
–50 –25
0
25
50
75
Output Noise Spectral Density
ΔIL = 1μA TO 20mA
VOUT = 600mV
VIN = 1.6V
1.5
1.0
0.5
0
–0.5
100 125 150
–1.0
–50 –25
0
25
50
75
RMS Output Noise vs Load
Current (10Hz to 100kHz)
OUTPUT NOISE (μVRMS)
1
0.1
10
1k
10k
FREQUENCY (Hz)
100k
3009 G23
IOUT = 1mA TO 20mA
VIN = 5.5V
VOUT = 5V
COUT = 4.7μF
VOUT
50mV/DIV
3.3V
100
Transient Response
IOUT = 1mA TO 20mA
VIN = 5.5V
VOUT = 5V
COUT = 1μF
5V
VOUT
50mV/DIV
2.5V
300
1.8V
1.5V
1.2V
200
600mV
100
0
0.001
10
Transient Response
600
400
5V
3.3V
2.5V
1.8V
1.5V
1.2V
1V
0.6V
3009 G22
3009 G21
500
100
TEMPERATURE (°C)
TEMPERATURE (°C)
700
100 125 150
OUTPUT NOISE SPECTRAL DENSITY (μV√Hz)
Load Regulation
80
LOAD REGULATION (mV)
INPUT RIPPLE REJECTION (dB)
Input Ripple Rejection
TA = 25°C, unless otherwise noted.
0.01
0.1
1
ILOAD (mA)
10
IOUT
20mA/DIV
500μs/DIV
3009 G25
IOUT
20mA/DIV
500μs/DIV
3009 G26
100
3009 G24
3009fd
10
LT3009 Series
PIN FUNCTIONS
(SC70/DFN)
SHDN (Pin 1/Pin 5): Shutdown. Pulling the SHDN pin
low puts the LT3009 into a low power state and turns the
output off. If unused, tie the SHDN pin to VIN . The LT3009
does not function if the SHDN pin is not connected. The
SHDN pin cannot be driven below GND unless tied to the
IN pin. If the SHDN pin is driven below GND while IN is
powered, the output will turn on. SHDN pin logic cannot
be referenced to a negative rail.
GND (Pins 2, 3, 4/Pin 6): Ground. Connect the bottom
of the resistor divider that sets output voltage directly to
GND for the best regulation.
IN (Pin 5/Pin 4): Input. The IN pin supplies power to the
device. The LT3009 requires a bypass capacitor at IN if
the device is more than six inches away from the main
input filter capacitor. In general, the output impedance
of a battery rises with frequency, so it is advisable to
include a bypass capacitor in battery-powered circuits. A
bypass capacitor in the range of 0.1μF to 10μF will suffice. The LT3009 withstands reverse voltages on the IN
pin with respect to ground and the OUT pin. In the case
of a reversed input, which occurs with a battery plugged
in backwards, the LT3009 acts as if a large resistor is in
series with its input. Limited reverse current flows into
the LT3009 and no reverse voltage appears at the load.
The device protects both itself and the load.
OUT (Pin 6/Pins 2, 3): Output. This pin supplies power to
the load. Use a minimum output capacitor of 1μF to prevent
oscillations. Large load transient applications require larger
output capacitors to limit peak voltage transients. See the
Applications Information section for more information on
output capacitance and reverse output characteristics.
ADJ (Pin 7/Pin 1): Adjust. This pin is the error amplifier’s
inverting terminal. Its 300pA typical input bias current
flows out of the pin (see curve of ADJ Pin Bias Current vs
Temperature in the Typical Performance Characteristics
section). The ADJ pin voltage is 600mV referenced to GND
and the output voltage range is 600mV to 19.5V. This pin
is not connected in the fixed output voltage versions.
NC (Pins 7, 8/Pin 1): No Connect. For the adjustable voltage
version, Pin 8 is an NC pin in the SC70 package. For the
fixed voltage versions, Pin 7 and Pin 8 are NC pins in the
SC70 package, and Pin 1 is an NC pin in the DFN package.
NC pins are not tied to any internal circuitry. They may be
floated, tied to VIN or tied to GND.
Exposed Pad (Pin 7, DFN Package Only): Ground. The
Exposed Pad (backside) of the DFN package is an electrical connection to GND. To ensure optimum performance,
solder Pin 7 to the PCB and tie directly to Pin 6.
3009fd
11
LT3009 Series
APPLICATIONS INFORMATION
The LT3009 is a low dropout linear regulator with ultralow quiescent current and shutdown. Quiescent current is
extremely low at 3μA and drops well below 1μA in shutdown. The device supplies up to 20mA of output current.
Dropout voltage at 20mA is typically 280mV. The LT3009
incorporates several protection features, making it ideal for
use in battery-powered systems. The device protects itself
against both reverse-input and reverse-output voltages.
In battery backup applications, where a backup battery
holds up the output when the input is pulled to ground,
the LT3009 acts as if a blocking diode is in series with its
output and prevents reverse current flow. In applications
where the regulator load returns to a negative supply, the
output can be pulled below ground by as much as 22V
without affecting startup or normal operation.
Specifications for output voltages greater than 0.6V are
proportional to the ratio of the desired output voltage to
0.6V: VOUT/0.6V. For example, load regulation for an output
current change of 100μA to 20mA is –0.7mV typical at
VOUT = 0.6V. At VOUT = 5V, load regulation is:
5V
• (−0.7mV) = −5.83mV
0.6V
Table 1 shows resistor divider values for some common output voltages with a resistor divider current of
about 1μA.
Table 1. Output Voltage Resistor Divider Values
Adjustable Operation
The LT3009 has an output voltage range of 0.6V to 19.5V.
Figure 1 shows that output voltage is set by the ratio of two
external resistors. The IC regulates the output to maintain
the ADJ pin voltage at 600mV referenced to ground. The
current in R1 equals 600mV/R1 and the current in R2 is
the current in R1 minus the ADJ pin bias current. The
ADJ pin bias current, typically 300pA at 25°C, flows out
of the pin. Calculate the output voltage using the formula
in Figure 1. An R1 value of 619k sets the divider current
to 0.97μA. Do not make R1’s value any greater than 619k
to minimize output voltage errors due to the ADJ pin bias
current and to insure stability under minimum load conditions. In shutdown, the output turns off and the divider
current is zero. Curves of ADJ Pin Voltage vs Temperature
and ADJ Pin Bias Current vs Temperature appear in the
Typical Performance Characteristics.
VOUT = 600mV* (1 + R2/R1) – (IADJ • R2)
VADJ = 600mV
IADJ = 0.3nA at 25°C
OUTPUT RANGE = 0.6V to 19.5V
VOUT
R1
R2
1V
604k
402k
1.2V
604k
604k
1.5V
590k
887k
1.8V
590k
1.18M
2.5V
590k
1.87M
3V
590k
2.37M
3.3V
619k
2.8M
5V
590k
4.32M
Because the ADJ pin is relatively high impedance (depending on the resistor divider used), stray capacitances
at this pin should be minimized. Special attention should
be given to any stray capacitances that can couple external signals onto the ADJ pin producing undesirable
output transients or ripple.
Extra care should be taken in assembly when using high
valued resistors. Small amounts of board contamination
can lead to significant shifts in output voltage. Appropriate post-assembly board cleaning measures should
IN
VIN
VOUT
OUT
LT3009
SHDN
GND
R2
ADJ
R1
3009 F0
Figure 1. Adjustable Operation
3009fd
12
LT3009 Series
APPLICATIONS INFORMATION
be implemented to prevent board contamination. If the
board is to be subjected to humidity cycling or if board
cleaning measures cannot be guaranteed, consideration
should be given to using resistors an order of magnitude
smaller than in Table 1 to prevent contamination from
causing unwanted shifts in the output voltage.
Output Capacitance and Transient Response
The LT3009 is stable with a wide range of output capacitors. The ESR of the output capacitor affects stability, most
notably with small capacitors. Use a minimum output
capacitor of 1μF with an ESR of 3 or less to prevent oscillations. The LT3009 is a micropower device and output
load transient response is a function of output capacitance.
Larger values of output capacitance decrease the peak
deviations and provide improved transient response for
larger load current changes.
Give extra consideration to the use of ceramic capacitors.
Manufacturers make ceramic capacitors with a variety of
dielectrics, each with different behavior across temperature and applied voltage. The most common dielectrics
20
are specified with EIA temperature characteristic codes
of Z5U, Y5V, X5R and X7R. The Z5U and Y5V dielectrics
provide high C-V products in a small package at low cost,
but exhibit strong voltage and temperature coefficients as
shown in Figures 2 and 3. When used with a 5V regulator,
a 16V 10μF Y5V capacitor can exhibit an effective value
as low as 1μF to 2μF for the DC bias voltage applied and
over the operating temperature range. The X5R and X7R
dielectrics yield more stable characteristics and are more
suitable for use as the output capacitor. The X7R type has
better stability across temperature, while the X5R is less
expensive and is available in higher values. One must still
exercise care when using X5R and X7R capacitors; the
X5R and X7R codes only specify operating temperature
range and maximum capacitance change over temperature.
Capacitance change due to DC bias with X5R and X7R
capacitors is better than Y5V and Z5U capacitors, but can
still be significant enough to drop capacitor values below
appropriate levels. Capacitor DC bias characteristics tend
to improve as component case size increases, but expected
capacitance at operating voltage should be verified.
40
BOTH CAPACITORS ARE 16V,
1210 CASE SIZE, 10μF
20
X5R
CHANGE IN VALUE (%)
CHANGE IN VALUE (%)
0
–20
–40
–60
Y5V
–80
–100
–20
–40
2
4
8
6
10 12
DC BIAS VOLTAGE (V)
14
16
3009 F02
Figure 2. Ceramic Capacitor DC Bias Characteristics
Y5V
–60
–80
0
X5R
0
BOTH CAPACITORS ARE 16V,
1210 CASE SIZE, 10μF
–100
–50 –25
50
25
75
0
TEMPERATURE (°C)
100
125
3009 F03
Figure 3. Ceramic Capacitor Temperature Characteristics
3009fd
13
LT3009 Series
APPLICATIONS INFORMATION
Voltage and temperature coefficients are not the only
sources of problems. Some ceramic capacitors have a
piezoelectric response. A piezoelectric device generates
voltage across its terminals due to mechanical stress,
similar to the way a piezoelectric accelerometer or microphone works. For a ceramic capacitor, the stress can be
induced by vibrations in the system or thermal transients.
The resulting voltages produced can cause appreciable
amounts of noise, especially when a ceramic capacitor is
used for noise bypassing. A ceramic capacitor produced
Figure 4’s trace in response to light tapping from a pencil.
Similar vibration induced behavior can masquerade as
increased output voltage noise.
VOUT = 0.6V
COUT = 22μF
ILOAD = 10μA
VOUT
500μV/DIV
100ms/DIV
3009 F04
Figure 4. Noise Resulting from Tapping
on a Ceramic Capacitor
Thermal Considerations
The LT3009’s maximum rated junction temperature of
125°C limits its power-handling capability. Two components
comprise the power dissipated by the device:
1. Output current multiplied by the input/output voltage
differential: IOUT • (VIN – VOUT)
2. GND pin current multiplied by the input voltage:
IGND • VIN
GND pin current is found by examining the GND Pin Current curves in the Typical Performance Characteristics
section. Power dissipation equals the sum of the two
components listed prior.
The LT3009 regulator has internal thermal limiting designed
to protect the device during overload conditions. For continuous normal conditions, do not exceed the maximum
junction temperature rating of 125°C. Carefully consider
all sources of thermal resistance from junction to ambient including other heat sources mounted in proximity to
the LT3009. For surface mount devices, heat sinking is
accomplished by using the heat spreading capabilities of
the PC board and its copper traces. Copper board stiffeners
and plated through-holes can also be used to spread the
heat generated by power devices.
3009fd
14
LT3009 Series
APPLICATIONS INFORMATION
The following tables list thermal resistance for several different board sizes and copper areas. All measurements
were taken in still air on 3/32" FR-4 board with one ounce
copper.
Table 2: Measured Thermal Resistance for DC Package
COPPER AREA
Calculating Junction Temperature
Example: Given an output voltage of 3.3V, an input voltage range of 12V ±5%, an output current range of 0mA
to 20mA and a maximum ambient temperature of 85°C,
what will the maximum junction temperature be for an
application using the DC package?
TOPSIDE*
BACKSIDE
BOARD
AREA
THERMAL RESISTANCE
(JUNCTION-TO-AMBIENT)
2500mm2
2500mm2
2500mm2
65°C/W
1000mm2
2500mm2
2500mm2
70°C/W
225mm2
2500mm2
2500mm2
75°C/W
100mm2
2500mm2
2500mm2
80°C/W
IOUT(MAX) = 20mA
50mm2
2500mm2
2500mm2
85°C/W
VIN(MAX) = 12.6V
*Device is mounted on the topside.
TOPSIDE*
BACKSIDE
BOARD
AREA
THERMAL RESISTANCE
(JUNCTION-TO-AMBIENT)
2500mm2
2500mm2
2500mm2
75°C/W
1000mm2
2500mm2
2500mm2
80°C/W
225mm2
2500mm2
2500mm2
85°C/W
100mm2
2500mm2
2500mm2
90°C/W
50mm2
2500mm2
2500mm2
95°C/W
*Device is mounted on the topside.
IOUT(MAX) (VIN(MAX) – VOUT) + IGND (VIN(MAX))
where,
IGND at (IOUT = 20mA, VIN = 12.6V) = 0.45mA
Table 3: Measured Thermal Resistance for SC70 Package
COPPER AREA
The power dissipated by the device is equal to:
So,
P = 20mA(12.6V – 3.3V) + 0.45mA(12.6V) = 191.7mW
The thermal resistance will be in the range of 65°C/W to
85°C/W depending on the copper area. So the junction
temperature rise above ambient will be approximately
equal to:
0.1917W(75°C/W) = 14.4°C
The maximum junction temperature equals the maximum
junction temperature rise above ambient plus the maximum
ambient temperature or:
TJ(MAX) = 85°C + 14.4°C = 99.4°C
3009fd
15
LT3009 Series
APPLICATIONS INFORMATION
Protection Features
The LT3009 incorporates several protection features that
make it ideal for use in battery-powered circuits. In addition to the normal protection features associated with
monolithic regulators, such as current limiting and thermal
limiting, the device also protects against reverse-input
voltages, reverse-output voltages and reverse output-toinput voltages.
Current limit protection and thermal overload protection
protect the device against current overload conditions at
the output of the device. For normal operation, do not
exceed a junction temperature of 125°C.
The LT3009 IN pin withstands reverse voltages of 22V. The
device limits current flow to less than 1mA (typically less
than 220μA) and no negative voltage appears at OUT. The
device protects both itself and the load against batteries
that are plugged in backwards.
The SHDN pin cannot be driven below GND unless tied to
the IN pin. If the SHDN pin is driven below GND while IN
is powered, the output will turn on. SHDN pin logic cannot
be referenced to a negative rail.
The LT3009 incurs no damage if OUT is pulled below
ground. If IN is left open circuit or grounded, OUT can be
pulled below ground by 22V. No current flows from the
pass transistor connected to OUT. However, current flows
in (but is limited by) the resistor divider that sets output
voltage. Current flows from the bottom resistor in the
divider and from the ADJ pin’s internal clamp through the
top resistor in the divider to the external circuitry pulling
OUT below ground. If IN is powered by a voltage source,
OUT sources current equal to its current limit capability
and the LT3009 protects itself by thermal limiting if necessary. In this case, grounding the SHDN pin turns off the
LT3009 and stops OUT from sourcing current.
The LT3009 incurs no damage if the ADJ pin is pulled
above or below ground by 22V. If IN is left open circuit or
grounded, ADJ acts like a 100k resistor in series with a
diode when pulled above or below ground.
In circuits where a backup battery is required, several
different input/output conditions can occur. The output
voltage may be held up while the input is either pulled
to ground, pulled to some intermediate voltage or is left
open circuit. Current flow back into the output follows the
curve shown in Figure 5.
If the LT3009 IN pin is forced below the OUT pin or the
OUT pin is pulled above the IN pin, input current typically
drops to less than 1μA. This occurs if the LT3009 input is
connected to a discharged (low voltage) battery and either
a backup battery or a second regulator circuit holds up
the output. The state of the SHDN pin has no effect in the
reverse current if OUT is pulled above IN.
100
REVERSE CURRENT (μA)
90
80
70
ADJ CURRENT
60
50
40
30
20
OUT CURRENT
10
0
0
1
2 3 4 5 6 7 8 9
OUTPUT AND ADJ VOLTAGE (V)
10
3009 F05
Figure 5. Reverse Output Current
3009fd
16
LT3009 Series
TYPICAL APPLICATIONS
Keep-Alive Power Supply
NO PROTECTION
DIODES NEEDED!
VIN
12V
IN
1μF
3.3V
OUT
1μF
LT3009-3.3
LOAD:
SYSTEM MONITOR,
VOLATILE MEMORY, ETC.
SHDN
GND
3009 TA02
Last-Gasp Circuit
LINE POWER
VLINE
12V TO 15V
SENSE
DCHARGE
LINE
INTERRUPT
DETECT
RLIMIT
IN
SUPERCAP
1μF
OUT
LT3009-5
5V
TO
MONITORING
CENTER
FAULT
PWR
GND
1μF
3009 TA03
SHDN
GND
PACKAGE DESCRIPTION
DC6 Package
6-Lead Plastic DFN (2mm × 2mm)
(Reference LTC DWG # 05-08-1703 Rev B)
R = 0.125
TYP
0.56 ±0.05
(2 SIDES)
0.70 ±0.05
2.55 ±0.05
1.15 ±0.05 0.61 ±0.05
(2 SIDES)
PIN 1 BAR
PACKAGE
TOP MARK
OUTLINE
(SEE NOTE 6)
0.25 ±0.05
0.50 BSC
1.42 ±0.05
(2 SIDES)
0.200 REF
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
NOTE:
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WCCD-2)
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE
TOP AND BOTTOM OF PACKAGE
0.40 ±0.10
4
6
2.00 ±0.10
(4 SIDES)
PIN 1 NOTCH
R = 0.20 OR
0.25 × 45°
CHAMFER
R = 0.05
TYP
0.75 ±0.05
(DC6) DFN REV B 1309
3
1
0.25 ±0.05
0.50 BSC
1.37 ±0.05
(2 SIDES)
0.00 – 0.05
BOTTOM VIEW—EXPOSED PAD
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE
TOP AND BOTTOM OF PACKAGE
3009fd
17
LT3009 Series
PACKAGE DESCRIPTION
SC8 Package
8-Lead Plastic SC70
(Reference LTC DWG # 05-08-1639 Rev Ø)
0.30
MAX
0.50
REF
PIN 8
1.80 – 2.20
(NOTE 4)
1.00 REF
INDEX AREA
(NOTE 6)
1.80 – 2.40 1.15 – 1.35
(NOTE 4)
2.8 BSC 1.8 REF
PIN 1
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.10 – 0.40
0.50 BSC
0.15 – 0.27
8 PLCS (NOTE 3)
0.80 – 1.00
0.00 – 0.10
REF
1.00 MAX
GAUGE PLANE
0.15 BSC
0.26 – 0.46
0.10 – 0.18
(NOTE 3)
SC8 SC70 0905 REV Ø
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. DETAILS OF THE PIN 1 IDENTIFIER ARE OPTIONAL,
BUT MUST BE LOCATED WITHIN THE INDEX AREA
7. EIAJ PACKAGE REFERENCE IS EIAJ SC-70 AND JEDEC MO-203 VARIATION BA
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18
LT3009 Series
REVISION HISTORY
(Revision history begins at Rev D)
REV
DATE
DESCRIPTION
D
04/12
Clarified E-Grade Operating Temperature
PAGE NUMBER
5
3009fd
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
19
LT3009 Series
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1761
100mA, Low Noise Micropower LDO
VIN : 1.8V to 20V, VOUT = 1.22V, VDO = 0.3V, IQ = 20μA, ISD < 1μA, Low Noise < 20μVRMS ,
Stable with 1μF Ceramic Capacitors, ThinSOTTM Package
LT1762
150mA, Low Noise Micropower LDO
VIN : 1.8V to 20V, VOUT = 1.22V, VDO = 0.3V, IQ = 25μA, ISD < 1μA, Low Noise < 20μVRMS ,
MS8 Package
LT1763
500mA, Low Noise Micropower LDO
VIN : 1.8V to 20V, VOUT = 1.22V, VDO = 0.3V, IQ = 30μA, ISD < 1μA, Low Noise < 20μVRMS ,
S8 Package
LT1764/LT1764A
3A, Low Noise, Fast Transient
Response LDOs
VIN : 2.7V to 20V, VOUT = 1.21V, VDO = 0.34V, IQ = 1mA, ISD < 1μA, Low Noise < 40μVRMS ,
“A” Version Stable with Ceramic Capacitors, DD and TO220-5 Packages
LTC1844
150mA, Low Noise Micropower VLDO
VIN : 1.6V to 6.5V, VOUT(MIN) = 1.25V, VDO = 0.09V, IQ = 35μA, ISD < 1μA,
Low Noise: < 30μVRMS , ThinSOT Package
LT1962
300mA, Low Noise Micropower LDO
VIN : 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.27V, IQ = 30μA, ISD < 1μA,
Low Noise: < 20μVRMS , MS8 Package
LT1963/LT1963A
1.5A, Low Noise, Fast Transient
Response LDOs
VIN : 2.1V to 20V, VOUT(MIN) = 1.21V, VDO = 0.34V, IQ = 1mA, ISD < 1μA,
Low Noise: < 40μVRMS , “A” Version Stable with Ceramic Capacitors, DD, TO220-5,
SOT223 and S8 Packages
LT1964
200mA, Low Noise Micropower,
Negative LDO
VIN : –2.2V to –20V, VOUT(MIN) = 1.21V, VDO = 0.34V, IQ = 30μA, ISD = 3μA,
Low Noise: < 30μVRMS , Stable with Ceramic Capacitors,ThinSOT Package
LT3010
50mA, High Voltage, Micropower LDO
VIN : 3V to 80V, VOUT(MIN) = 1.275V, VDO = 0.3V, IQ = 30μA, ISD < 1μA,
Low Noise: < 100μVRMS , Stable with 1μF Output Capacitor, MS8E Package
LT3012/LT3012B
250mA, High Voltage, Micropower LDOs VIN : 4V to 80V, VOUT(MIN) = 1.24V, VDO = 0.4V, IQ = 40μA, ISD < 1μA,
Low Noise: <100μVRMS , Stable with 3.3μF Output Capacitor, 12-Lead 4mm × 3mm DFN
and 16-Lead FE Packages
LT3013/LT3013B
250mA, High Voltage, Micropower LDOs VIN : 4V to 80V, VOUT(MIN) = 1.22V, VDO = 0.4V, IQ = 40μA, ISD < 1μA,
with PWRGD
Low Noise: < 100μVRMS , Stable with 3.3μF Output Capacitor,
12-Lead 4mm × 3mm DFN and 16-Lead FE Packages
LT3014/LT3014B
20mA, High Voltage, Micropower LDO
VIN : 3V to 80V, VOUT(MIN) = 1.2V, VDO = 0.35V, IQ = 7μA, ISD < 1μA,
Low Noise: < 100μVRMS , Stable with 0.47μF Output Capacitor, SOT23-5 and
3mm × 3mm DFN Packages
LT3020
100mA, Low Voltage VLDO
VIN : 0.9V to 10V, VOUT(MIN) = 0.20V, VDO = 0.15V, IQ = 120μA, ISD < 1μA, 3mm × 3mm DFN
and MS8 Packages
LT3021
500mA, Low Voltage VLDO
VIN : 0.9V to 10V, VOUT(MIN) = 0.20V, VDO = 0.16V, IQ = 120μA, ISD < 3μA, 5mm × 5mm DFN
and SO8 Packages
LT3023
Dual 100mA, Low Noise,
Micropower LDO
VIN : 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.30V, IQ = 40μA, ISD < 1μA, DFN and
MS10 Packages
LT3024
Dual 100mA/500mA, Low Noise,
Micropower LDO
VIN : 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.30V, IQ = 60μA, ISD < 1μA, DFN and TSSOP16E Packages
LTC3025
300mA, Low Voltage Micropower VLDO 45mV Dropout Voltage, Low Noise 110μVRMS , VIN = 1.14V to 5.5V, Low IQ: 54μA,
6-Lead 2mm × 2mm DFN Package
LTC3026
1.5A, Low Input Voltage VLDO
100mV Dropout Voltage, Low Noise 80μVRMS , VIN = 0.9V to 5.5V, Low IQ: 950μA,
10-Lead 3mm × 3mm DFN and MS10E Packages
LT3027
Dual 100mA, Low Noise, Micropower
LDO with Independent Inputs
VIN : 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.30V, IQ = 40μA, ISD < 1μA, DFN and
MS10E Packages
LT3028
Dual 100mA/500mA, Low Noise,
Micropower LDO with Independent
Inputs
VIN : 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.30V, IQ = 60μA, ISD < 1μA, DFN and
TSSOP-16E Packages
ThinSOT is a trademark of Linear Technology Corporation.
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20 Linear Technology Corporation
LT 0412 REV D • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2007