LT3007 Datasheet, PDF (1/16 Pages) Linear Technology – 3μA IQ, 20mA, 45V Low Dropout Fault Tolerant Linear Regulators Output Current: 20mA

FEATURES
n _{FMEA Fault Tolerant:}
Output Stays at or Below Regulation Voltage During
Adjacent Pin Short or if a Pin Is Left Floating
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 Package}
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}
LT3007 Series
3µA I_Q, 20mA, 45V
Low Dropout Fault Tolerant
Linear Regulators
DESCRIPTION
The LT^®3007 series are micropower, low dropout voltage
(LDO) linear regulators. The devices supply 20mA output
current with a dropout voltage of 300mV. No-load quies-
cent 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 LT3007 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 LT3007 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 LT3007 is available in the thermally
enhanced 8-lead TSOT-23 package.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered and ThinSOT is a
trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
TYPICAL APPLICATION
V_IN
3.8V TO
45V
3.3V, 20mA Supply with Shutdown
IN
OUT
1µF
LT3007-3.3
V_OUT
3.3V
2.2µF ^20mA
SHDN SENSE
GND
3007 TA01a
Dropout Voltage/Quiescent Current
500
I_LOAD = 20mA
450
400
6
DROPOUT
VOLTAGE
5
350
4
300
250
I_Q
3
200
2
150
100
1
50
0
–50 –25
0
0 25 50 75 100 125 150
TEMPERATURE (°C)
3007 TA01b
For more information www.linear.com/LT3007
3007f
1