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Linear Technology Electronic Components Datasheet

LT3009 Datasheet

20mA Low Dropout Linear Regulators

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LT3009 Series
3µA IQ, 20mA
Low Dropout Linear Regulators
FEATURES
n Ultralow Quiescent Current: 3μA
n Input Voltage Range: 1.6V to 20V
n Output Current: 20mA
n Dropout Voltage: 280mV
n Adjustable Output (VADJ = VOUT(MIN) = 600mV)
n Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2.5V,
3.3V, 5V
n Output Tolerance: ±2% Over Load, Line and
Temperature
n Stable with Low ESR, Ceramic Output Capacitors
(1μF minimum)
n Shutdown Current: <1μA
n Current Limit Protection
n Reverse-Battery Protection
n Thermal Limit Protection
n 8-Lead SC70 and 2mm × 2mm DFN Packages
APPLICATIONS
n Low Current Battery-Powered Systems
n Keep-Alive Power Supplies
n Remote Monitoring
Utility Meters
Hotel Door Locks
DESCRIPTION
The LT®3009 Series are micropower, low dropout voltage
(LDO) linear regulators. The devices supply 20mA out-
put 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.
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 reverse-
current protection.
The LT3009 Series are ideal for applications that re-
quire 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 refer-
ence. The LT3009 is available in the 6-lead DFN and
8-lead SC70 packages.
L, LT, LTC and LTM 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
VIN
3.75V TO
20V
IN OUT
1μF
LT3009-3.3
SHDN
GND
VOUT
3.3V
1μF 20mA
3009 TA01a
Dropout Voltage/Quiescent Current
500
ILOAD = 20mA
450
5.0
4.5
400 4.0
350
300
250 IQ
DROPOUT
VOLTAGE
3.5
3.0
2.5
200 2.0
150 1.5
100 1.0
50 0.5
0
–50 –25
0
0 25 50 75 100 125 150
TEMPERATURE (°C)
3009 TA01b
3009fb
1


Linear Technology Electronic Components Datasheet

LT3009 Datasheet

20mA Low Dropout Linear Regulators

No Preview Available !

LT3009 Serieswww.DataSheet4U.com
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
ADJ/NC* 1
OUT 2
6 GND
7 5 SHDN
OUT 3
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
* The ADJ pin is not connected in fixed output voltage versions.
** See the Applications Information section.
TOP VIEW
SHDN 1
GND 2
GND 3
GND 4
8 NC
7 ADJ/NC*
6 OUT
5 IN
SC8 PACKAGE
8-LEAD PLASTIC SC70
TJMAX = 125°C, θJA = 75°C/W TO 95°C/W**
ORDER INFORMATION
LEAD FREE FINISH
LT3009EDC#PBF
LT3009IDC#PBF
LT3009EDC-1.2#PBF
LT3009IDC-1.2#PBF
LT3009EDC-1.5#PBF
LT3009IDC-1.5#PBF
LT3009EDC-1.8#PBF
LT3009IDC-1.8#PBF
LT3009EDC-2.5#PBF
LT3009IDC-2.5#PBF
LT3009EDC-3.3#PBF
LT3009IDC-3.3#PBF
LT3009EDC-5#PBF
LT3009IDC-5#PBF
TAPE AND REEL
LT3009EDC#TRPBF
LT3009IDC#TRPBF
LT3009EDC-1.2#TRPBF
LT3009IDC-1.2#TRPBF
LT3009EDC-1.5#TRPBF
LT3009IDC-1.5#TRPBF
LT3009EDC-1.8#TRPBF
LT3009IDC-1.8#TRPBF
LT3009EDC-2.5#TRPBF
LT3009IDC-2.5#TRPBF
LT3009EDC-3.3#TRPBF
LT3009IDC-3.3#TRPBF
LT3009EDC-5#TRPBF
LT3009IDC-5#TRPBF
PART MARKING*
LCQX
LCQX
LDTW
LDTW
LDVB
LDVB
LDKC
LDKC
LDTY
LDTY
LDKD
LDKD
LDKF
LDKF
PACKAGE DESCRIPTION
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
6-Lead (2mm × 2mm) Plastic DFN
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
3009fb
2


Part Number LT3009
Description 20mA Low Dropout Linear Regulators
Maker Linear Technology
PDF Download

LT3009 Datasheet PDF






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