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Linear Technology Electronic Components Datasheet

LT3008 Datasheet

45V Low Dropout Linear Regulator

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LT3008 Series
3µA IQ, 20mA, 45V
Low Dropout Linear Regulators
FEATURES
n Ultralow Quiescent Current: 3μA
n Input Voltage Range: 2.0V to 45V
n Output Current: 20mA
n Dropout Voltage: 300mV
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
(2.2μF Minimum)
n Shutdown Current: <1μA
n Current Limit Protection
n Reverse-Battery Protection
n Thermal Limit Protection
n TSOT-23 and 2mm × 2mm DFN Packages
APPLICATIONS
n Automotive
n Low Current Battery-Powered Systems
n Keep-Alive Power Supplies
n Remote Monitoring
n Utility Meters
n Low Power Industrial Applications
DESCRIPTION
The LT®3008 series are micropower, low dropout voltage
(LDO) linear regulators. The devices supply 20mA output
current with a dropout voltage of 300mV. 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 LT3008 regulators optimize stability and transient
response with low ESR ceramic capacitors, requiring a
minimum of only 2.2μF. 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 LT3008 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 an adjustable version with an output voltage range
of 0.6V to 44.5V. The LT3008 is available in the thermally
enhanced 6-lead DFN and 8-lead TSOT-23 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
VIN
3.8V TO
45V
IN OUT
1μF
LT3008-3.3
SHDN SENSE
GND
VOUT
3.3V
2.2μF 20mA
3008 TA01a
Dropout Voltage/Quiescent Current
500
ILOAD = 20mA
450
400
DROPOUT
VOLTAGE
6
5
350 4
300
250 IQ 3
200
2
150
100 1
50
0
–50 –25
0
0 25 50 75 100 125 150
TEMPERATURE (°C)
3008 TA01b
3008fc
1


Linear Technology Electronic Components Datasheet

LT3008 Datasheet

45V Low Dropout Linear Regulator

No Preview Available !

LT3008 Series
ABSOLUTE MAXIMUM RATINGS (Note 1)
IN Pin Voltage .........................................................±50V
OUT Pin Voltage......................................................±50V
Input-to-Output Differential Voltage ........................±50V
ADJ Pin Voltage ......................................................±50V
SENSE Pin Voltage..................................................±50V
SHDN Pin Voltage (Note 8) .....................................±50V
Output Short-Circuit Duration .......................... Indefinite
Operating Junction Temperature Range (Notes 2, 3)
E, I Grade...........................................–40°C to 125°C
MP Grade...........................................–55°C to 125°C
Storage Temperature Range...................–65°C to 150°C
Lead Temperature: Soldering, 10 sec
TS8 Package Only............................................. 300°C
PIN CONFIGURATION
TOP VIEW
**SENSE/ADJ 1
6 GND
OUT 2
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
* See the Applications Information Section.
** SENSE for Fixed Voltage Output Versions.
TOP VIEW
SHDN 1
GND 2
GND 3
GND 4
8 NC
7 ADJ/SENSE**
6 OUT
5 IN
TS8 PACKAGE
8-LEAD PLASTIC TSOT-23
TJMAX = 125°C, θJA = 65°C/W TO 85°C/W*
ORDER INFORMATION
LEAD FREE FINISH
LT3008EDC#PBF
LT3008IDC#PBF
LT3008EDC-1.2#PBF
LT3008IDC-1.2#PBF
LT3008EDC-1.5#PBF
LT3008IDC-1.5#PBF
LT3008EDC-1.8#PBF
LT3008IDC-1.8#PBF
LT3008EDC-2.5#PBF
LT3008IDC-2.5#PBF
LT3008EDC-3.3#PBF
LT3008IDC-3.3#PBF
LT3008EDC-5#PBF
LT3008IDC-5#PBF
LT3008ETS8#PBF
TAPE AND REEL
LT3008EDC#TRPBF
LT3008IDC#TRPBF
LT3008EDC-1.2#TRPBF
LT3008IDC-1.2#TRPBF
LT3008EDC-1.5#TRPBF
LT3008IDC-1.5#TRPBF
LT3008EDC-1.8#TRPBF
LT3008IDC-1.8#TRPBF
LT3008EDC-2.5#TRPBF
LT3008IDC-2.5#TRPBF
LT3008EDC-3.3#TRPBF
LT3008IDC-3.3#TRPBF
LT3008EDC-5#TRPBF
LT3008IDC-5#TRPBF
LT3008ETS8#TRPBF
PART MARKING*
LDPS
LDPS
LFHC
LFHC
LFHF
LFHF
LFHH
LFHH
LFHK
LFHK
LFHN
LFHN
LFHQ
LFHQ
LTDSX
2
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
8-Lead Plastic TSOT-23
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
–40°C to 125°C
3008fc


Part Number LT3008
Description 45V Low Dropout Linear Regulator
Maker Linear Technology
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LT3008 Datasheet PDF






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