QUIESCENT CURRENT (A)
LT3008 Series
3A I , 20mA, 45V
Q
Low Dropout Linear Regulators
FEATURES DESCRIPTION
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Ultralow Quiescent Current: 3A
The LT 3008 series are micropower, low dropout voltage
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Input Voltage Range: 2.0V to 45V
(LDO) linear regulators. The devices supply 20mA output
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Output Current: 20mA
current with a dropout voltage of 300mV. No-load quiescent
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Dropout Voltage: 300mV
current is 3A. Ground pin current remains at less than
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Adjustable Output (V = V = 600mV)
5% of output current as load increases. In shutdown,
ADJ OUT(MIN)
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Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V
quiescent current is less than 1A.
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Output Tolerance: 2% Over Load, Line and
The LT3008 regulators optimize stability and transient
Temperature
response with low ESR ceramic capacitors, requiring a
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Stable with Low ESR, Ceramic Output Capacitors
minimum of only 2.2F. The regulators do not require
(2.2F Minimum)
the addition of ESR as is common with other regulators.
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Shutdown Current: <1A
Internal protection circuitry includes current limiting,
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Current Limit Protection
thermal limiting, reverse-battery protection and reverse-
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Reverse-Battery Protection
current protection.
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Thermal Limit Protection
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The LT3008 series are ideal for applications that require
TSOT-23 and 2mm 2mm DFN Packages
moderate output drive capability coupled with ultralow
APPLICATIONS
standby power consumption. The device is available in
xed output voltages of 1.2V, 1.5V, 1.8V, 2.5V, 3.3V and
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Automotive
5V, and an adjustable version with an output voltage range
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Low Current Battery-Powered Systems
of 0.6V to 44.5V. The LT3008 is available in the thermally
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Keep-Alive Power Supplies
enhanced 6-lead DFN and 8-lead TSOT-23 packages.
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Remote Monitoring
n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Utility Meters
Technology Corporation. All other trademarks are the property of their respective owners.
n
Low Power Industrial Applications
TYPICAL APPLICATION
3.3V, 20mA Supply with Shutdown Dropout Voltage/Quiescent Current
500 6
I = 20mA
LOAD
DROPOUT
450
V
OUT
VOLTAGE
5
3.3V
IN OUT
400
V
IN
20mA
3.8V TO
2.2F
1F
350
45V
LT3008-3.3 4
300
SHDN SENSE 3
250
I
Q
GND
200
2
150
3008 TA01a
100
1
50
0 0
50 25 0 25 50 75 100 125 150
TEMPERATURE (C)
3008 TA01b
3008fc
1
DROPOUT VOLTAGE (mV)LT3008 Series
(Note 1)
ABSOLUTE MAXIMUM RATINGS
IN Pin Voltage .........................................................50V Operating Junction Temperature Range (Notes 2, 3)
OUT Pin Voltage ......................................................50V E, I Grade ...........................................40C to 125C
Input-to-Output Differential Voltage ........................50V MP Grade ...........................................55C to 125C
ADJ Pin Voltage ......................................................50V Storage Temperature Range ...................65C to 150C
SENSE Pin Voltage ..................................................50V Lead Temperature: Soldering, 10 sec
SHDN Pin Voltage (Note 8) .....................................50V TS8 Package Only ............................................. 300C
Output Short-Circuit Duration .......................... Inde nite
PIN CONFIGURATION
TOP VIEW
TOP VIEW
**SENSE/ADJ 1 6 GND
8 NC
SHDN 1
GND 2 7 ADJ/SENSE**
OUT 2 7 5 SHDN
GND 3 6 OUT
OUT 3 4 IN
5 IN
GND 4
TS8 PACKAGE
DC PACKAGE
8-LEAD PLASTIC TSOT-23
6-LEAD (2mm s 2mm) PLASTIC DFN
T = 125C, = 65C/W TO 85C/W*
JMAX JA
T = 125C, = 65C/W TO 85C/W*
JMAX JA
EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB
* See the Applications Information Section.
** SENSE for Fixed Voltage Output Versions.
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3008EDC#PBF LT3008EDC#TRPBF LDPS 6-Lead (2mm 2mm) Plastic DFN 40C to 125C
LT3008IDC#PBF LT3008IDC#TRPBF LDPS 6-Lead (2mm 2mm) Plastic DFN 40C to 125C
LT3008EDC-1.2#PBF LT3008EDC-1.2#TRPBF LFHC 6-Lead (2mm 2mm) Plastic DFN 40C to 125C
LT3008IDC-1.2#PBF LT3008IDC-1.2#TRPBF LFHC 6-Lead (2mm 2mm) Plastic DFN 40C to 125C
LT3008EDC-1.5#PBF LT3008EDC-1.5#TRPBF LFHF 6-Lead (2mm 2mm) Plastic DFN 40C to 125C
LT3008IDC-1.5#PBF LT3008IDC-1.5#TRPBF LFHF 6-Lead (2mm 2mm) Plastic DFN 40C to 125C
LT3008EDC-1.8#PBF LT3008EDC-1.8#TRPBF LFHH 6-Lead (2mm 2mm) Plastic DFN 40C to 125C
LT3008IDC-1.8#PBF LT3008IDC-1.8#TRPBF LFHH 6-Lead (2mm 2mm) Plastic DFN 40C to 125C
LT3008EDC-2.5#PBF LT3008EDC-2.5#TRPBF LFHK 6-Lead (2mm 2mm) Plastic DFN 40C to 125C
LT3008IDC-2.5#PBF LT3008IDC-2.5#TRPBF LFHK 6-Lead (2mm 2mm) Plastic DFN 40C to 125C
LT3008EDC-3.3#PBF LT3008EDC-3.3#TRPBF LFHN 6-Lead (2mm 2mm) Plastic DFN 40C to 125C
LT3008IDC-3.3#PBF LT3008IDC-3.3#TRPBF LFHN 6-Lead (2mm 2mm) Plastic DFN 40C to 125C
LT3008EDC-5#PBF LT3008EDC-5#TRPBF LFHQ 6-Lead (2mm 2mm) Plastic DFN 40C to 125C
LT3008IDC-5#PBF LT3008IDC-5#TRPBF LFHQ 6-Lead (2mm 2mm) Plastic DFN 40C to 125C
LT3008ETS8#PBF LT3008ETS8#TRPBF LTDSX 8-Lead Plastic TSOT-23 40C to 125C
3008fc
2