LT3062IDCB-3.3#TRMPBF 数据手册
LT3062 Series
45V VIN, Micropower,
Low Noise, 200mA LDO
Features
Description
Input Voltage Range: 1.6V to 45V
Output Current: 200mA
Quiescent Current: 45µA
Dropout Voltage: 300mV
Low Noise: 30µVRMS (10Hz to 100kHz)
Adjustable Output (VREF = 600mV)
nn Fixed Output Voltages: 3.3V, 5V
n Output Tolerance: ±2% Over Load, Line, and
Temperature
n Single Capacitor Soft-Starts Reference and Lowers
Output Noise
n Shutdown Current: < 1µA
n Reverse Battery Protection
n Current Limit Foldback and Thermal Limit Protection
n 8-Lead 2mm × 3mm DFN and MSOP Packages
The LT®3062 is a micropower, low dropout (LDO) linear
regulator that operates over a 1.6V to 45V supply range
and is available in a series of fixed output and adjustable
versions. The device supplies 200mA of output current
with a typical dropout voltage of 300mV. A single external
capacitor provides programmable low noise reference
performance and output soft-start functionality. The
LT3062’s quiescent current is merely 45μA and provides
fast transient response with a minimum 3.3μF output
capacitor. In shutdown, quiescent current is less than 1μA
and the reference soft start capacitor is reset.
Applications
Internal protection circuitry includes reverse-battery protection, reverse-output protection, reverse-current protection, current limit with foldback and thermal shutdown.
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n
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Battery Powered Systems
Automotive Power Supplies
Industrial Power Supplies
Avionic Power Supplies
Portable Instruments
The LT3062 optimizes stability and transient response
with low ESR, ceramic output capacitors. The LT3062
does not require the addition of ESR as is common with
other regulators.
The LT3062 is available in fixed output voltages of 3.3V
and 5V, and as an adjustable device with an output voltage
range from the 600mV reference up to 40V. The LT3062
is offered in the thermally enhanced 8-lead 2mm × 3mm
DFN and MSOP packages.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
Typical Application
Dropout Voltage
550
3.3V Low Noise Regulator
VIN
5V
1µF
VOUT
3.3V
200mA
OUT
LT3062-3.3
SHDN
GND
10µF
10nF
ADJ
BYP
450
DROPOUT VOLTAGE (mV)
IN
500
400
350
300
250
TJ = 25°C
200
150
100
10nF
50
3062 TA01
0
0
25
50 75 100 125 150 175 200
OUTPUT CURRENT (mA)
3062 TA01a
3062fa
For more information www.linear.com/LT3062
1
LT3062 Series
Absolute Maximum Ratings
(Note 1)
IN Pin Voltage..........................................................±50V
OUT Pin Voltage............................................ +40V, –50V
Input to Output Differential Voltage (Note 2)............±50V
ADJ Pin Voltage.......................................................±50V
SHDN Pin Voltage....................................................±50V
REF/BYP Pin Voltage..................................... –0.3V to 1V
Output Short-Circuit Duration........................... Indefinite
Operating Junction Temperature (Notes 3, 5, 12)
LT3062E, LT3062I.............................. –40°C to 125°C
LT3062MP.......................................... –55°C to 150°C
LT3062H............................................. –40°C to 150°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
MS8E Package Only........................................... 300°C
Pin Configuration
TOP VIEW
ADJ 2
OUT 3
TOP VIEW
8 GND
REF/BYP 1
9
GND
REF/BYP
ADJ
OUT
OUT
7 SHDN
6 IN
5 IN
OUT 4
9
GND
8
7
6
5
GND
SHDN
IN
IN
MS8E PACKAGE
8-LEAD PLASTIC MSOP
DCB PACKAGE
8-LEAD (2mm × 3mm) PLASTIC DFN
TJMAX = 150°C, θJA = 38°C/W TO 45°C/W, θJC = 3.5°C/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
Order Information
1
2
3
4
TJMAX = 150°C, θJA = 29°C/W TO 45°C/W, θJC = 5°C/W TO 10°C/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
http://www.linear.com/product/LT3062#orderinfo
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3062EDCB#PBF
LT3062EDCB#TRPBF
LGNC
8-Lead (2mm × 3mm) Plastic DFN
–40°C to 125°C
LT3062IDCB#PBF
LT3062IDCB#TRPBF
LGNC
8-Lead (2mm × 3mm) Plastic DFN
–40°C to 125°C
LT3062HDCB#PBF
LT3062HDCB#TRPBF
LGNC
8-Lead (2mm × 3mm) Plastic DFN
–40°C to 150°C
LT3062MPDCB#PBF
LT3062MPDCB#TRPBF
LGNC
8-Lead (2mm × 3mm) Plastic DFN
–55°C to 150°C
LT3062EMS8E#PBF
LT3062EMS8E#TRPBF
LTGND
8-Lead Plastic MSOP
–40°C to 125°C
LT3062IMS8E#PBF
LT3062IMS8E#TRPBF
LTGND
8-Lead Plastic MSOP
–40°C to 125°C
LT3062HMS8E#PBF
LT3062HMS8E#TRPBF
LTGND
8-Lead Plastic MSOP
–40°C to 150°C
LT3062MPMS8E#PBF
LT3062MPMS8E#TRPBF
LTGND
8-Lead Plastic MSOP
–55°C to 150°C
LT3062EDCB-3.3#PBF
LT3062EDCB-3.3#TRPBF
LGYX
8-Lead (2mm × 3mm) Plastic DFN
–40°C to 125°C
LT3062IDCB-3.3#PBF
LT3062IDCB-3.3#TRPBF
LGYX
8-Lead (2mm × 3mm) Plastic DFN
–40°C to 125°C
LT3062EDCB-5#PBF
LT3062EDCB-5#TRPBF
LGYY
8-Lead (2mm × 3mm) Plastic DFN
–40°C to 125°C
LT3062IDCB-5#PBF
LT3062IDCB-5#TRPBF
LGYY
8-Lead (2mm × 3mm) Plastic DFN
–40°C to 125°C
2
3062fa
For more information www.linear.com/LT3062
LT3062 Series
Order Information
http://www.linear.com/product/LT3062#orderinfo
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3062EMS8E-3.3#PBF
LT3062EMS8E-3.3#TRPBF
LTGZG
8-Lead Plastic MSOP
–40°C to 125°C
LT3062IMS8E-3.3#PBF
LT3062IMS8E-3.3#TRPBF
LTGZG
8-Lead Plastic MSOP
–40°C to 125°C
LT3062EMS8E-5#PBF
LT3062EMS8E-5#TRPBF
LTGZF
8-Lead Plastic MSOP
–40°C to 125°C
LT3062IMS8E-5#PBF
LT3062IMS8E-5#TRPBF
LTGZF
8-Lead Plastic MSOP
–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/. Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
Electrical Characteristics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 3)
PARAMETER
CONDITIONS
Minimum Input Voltage (Note 4)
ILOAD = 200mA
Regulated Output Voltage (Note 5)
LT3062-3.3: VIN = 3.9, ILOAD = 1mA
LT3062-3.3: 3.9V < VIN < 45V, 1mA < ILOAD < 200mA
LT3062-5: VIN = 5.6, ILOAD = 1mA
LT3062-5: 5.6V < VIN < 45V, 1mA < ILOAD < 200mA
TYP
MAX
1.6
2.1
V
3.3
l
3.267
3.234
4.950
4.900
3.333
3.366
5.050
5.100
V
V
V
V
VIN = 2.1V, ILOAD = 1mA
2.1V < VIN < 45V, 1mA < ILOAD < 200mA (E-, I-Grades)
2.1V < VIN < 45V, 1mA < ILOAD < 200mA (MP-, H-Grades)
l
l
594
588
585
600
600
600
606
612
612
mV
mV
mV
LT3062-3.3: ΔVIN = 3.9V to 45V (E-, I-Grades)
LT3062-5: ΔVIN = 5.6V to 45V (E-, I-Grades)
l
l
1.6
3.1
22
33
mV
mV
LT3062: ΔVIN = 2.1V to 45V (E-, I-Grades)
LT3062: ΔVIN = 2.1V to 45V (MP-, H-Grades)
l
l
0.5
4
6
mV
mV
LT3062-3.3: VIN = 3.9V (E-, I-Grades)
LT3062-5: VIN = 5.6V (E-, I-Grades)
l
l
7.1
7.6
28
39
mV
mV
LT3062: VIN = 2.1V (E-, I-Grades)
LT3062: VIN = 2.1V (MP-, H-Grades)
l
l
0.3
4
9
mV
mV
ILOAD = 1mA
ILOAD = 1mA
65
l
110
180
mV
mV
ILOAD = 10mA
ILOAD = 10mA
130
l
180
270
mV
mV
ILOAD = 100mA
ILOAD = 100mA
250
l
290
430
mV
mV
ILOAD = 200mA
ILOAD = 200mA
300
l
360
530
mV
mV
GND Pin Current
VIN = VOUT(NOMINAL) + 0.6V
(Notes 6, 8)
ILOAD = 0
ILOAD = 1mA
ILOAD = 10mA
ILOAD = 100mA
ILOAD = 200mA
l
l
l
l
l
45
70
225
2
5
90
120
500
4
10
µA
µA
µA
mA
mA
Output Voltage Noise
COUT = 10µF, ILOAD = 200mA, CREF/BYP = 0.01µF
VOUT = 600mV, BW = 10Hz to 100kHz
ADJ Pin Voltage (Notes 4, 5)
Line Regulation (Note 4)
ILOAD = 1mA
Load Regulation (Note 4)
∆ILOAD = 1mA to 200mA
Dropout Voltage
VIN = VOUT(NOMINAL)
(Notes 6, 7)
MIN
l
l
5
30
UNITS
µVRMS
3062fa
For more information www.linear.com/LT3062
3
LT3062 Series
Electrical Characteristics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 3)
PARAMETER
CONDITIONS
ADJ Pin Bias Current (Notes 4, 9)
MIN
TYP
l
15
60
nA
0.3
0.8
0.7
1.5
V
V
1.2