LT3065 Series
45V V , 500mA Low Noise,
IN
Linear Regulator with Programmable
Current Limit and Power Good
Fea T Descrip T
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Input Voltage Range: 1.8V to 45V The LT 3065 Series are micropower, low noise, low dropout
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Output Current: 500mA voltage (LDO) linear regulators that operate over a 1.8V
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Dropout Voltage: 300mV to 45V input voltage range. The devices supply 500mA of
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Programmable Precision Current Limit: 10% output current with a typical dropout voltage of 300mV. A
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Power Good Flag single external capacitor provides programmable low noise
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Low Noise: 25V (10Hz to 100kHz) reference performance and output soft-start functionality.
RMS
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Adjustable Output (V = V = 600mV)
REF OUT(MIN)
A single external resistor programs the LT3065s current
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Output Tolerance: 2% Over Line, Load and
limit, accurate to 10% over a wide input voltage and tem-
Temperature
perature range. A PWRGD flag indicates output regulation.
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Stable with Low ESR, Ceramic Output Capacitors
The LT3065 optimizes stability and transient response
(3.3F Minimum)
n with low ESR ceramic capacitors, requiring a minimum of
Single Capacitor Soft-Starts Reference and Lowers
3.3F. Internal protection circuitry includes current limiting
Output Noise
n with foldback, thermal limiting, reverse battery protection,
Current Limit Foldback Protection
n reverse current protection and reverse output protection.
Shutdown Current: <1A
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Reverse Battery and Thermal Limit Protection
The LT3065 is available in fixed output voltages of 1.2V,
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10-Lead 3mm 3mm DFN and 12-lead MSOP
1.5V, 1.8V, 2.5V, 3.3V, and 5V, and as an adjustable de-
Packages
vice with an output voltage range from 0.6V to 40V. The
LT3065 is available in the thermally-enhanced 10-lead
a T
3mm 3mm DFN and 12-lead MSOP packages.
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L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
Battery-Powered Systems
ThinSOT is a trademark of Analog Devices, Inc. All other trademarks are the property of their
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Automotive Power Supplies
respective owners.
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Industrial Power Supplies
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Avionic Power Supplies
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Portable Instruments
Precision Current Limit, R = 1.5k
Typical a T
IMAX
220
V = 5V
OUT(NOMINAL)
5V Supply with 200mA Precision Current Limit
216
212
5V
5.6V TO 13V
OUT
IN OUT
208
IN
200mA
LT3065-5
V = 10V
IN
3.3F 1nF 3.3F
204
500k
SHDN SENSE
200
V = 5.6V
IN
PWRGD ADJ
196
192
REF/BYP I
MAX
GND
188
10nF 22nF
1.5k
184
3065 TA01a
180
75 50 25 0 25 50 75 100 125 150 175
TEMPERATURE (C)
3065 TA01b
3065fc
1
For more information www.linear.com/LT3065
CURRENT LIMIT (mA)
ion pplica
ions pplica
ion uresLT3065 Series
a T e Maxi Mu M r a T (Note 1)
IN Pin Voltage .........................................................50V Output Short-Circuit Duration .......................... Indefinite
OUT Pin Voltage ........................................... +40V, 50V Operating Junction Temperature Range (Notes 3, 5, 14)
Input-to-Output Differential Voltage (Note 2) ..+50V, 40V E-, I-Grades ....................................... 40C to 125C
ADJ Pin Voltage ......................................................50V MP-Grade .......................................... 55C to 150C
SENSE Pin Voltage ..................................................50V H-Grade ............................................. 40C to 150C
SHDN Pin Voltage ...................................................50V Storage Temperature Range .................. 65C to 150C
PWRGD Pin Voltage .......................................0.3V, 50V Lead Temperature (Soldering, 10 sec)
I Pin Voltage ..............................................0.3V, 7V MSOP Package Only .........................................300C
MAX
REF/BYP Pin Voltage ...................................................1V
p c F T
TOP VIEW
TOP VIEW
IN 10 OUT IN 1 12 OUT
1
IN 2 11 OUT
IN 2 9 OUT
SHDN 3 13 10 ADJ/SENSE*
11
SHDN 3 8 ADJ/SENSE*
4 GND
GND PWRGD 9 GND/ADJ*
PWRGD 4 7 GND/ADJ*
5 REF/BYP
I 8
MAX
NC 6 7 NC
I 5 6 REF/BYP
MAX
MSE PACKAGE
DD PACKAGE
12-LEAD PLASTIC MSOP
10-LEAD (3mm 3mm) PLASTIC DFN
T = 150C, = 28C/W, = 6C/W
JMAX JA JC
T = 150C, = 31C/W, = 9C/W
JMAX JA JC
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
*Pin 7: GND for LT3065, ADJ for LT3065-1.2, LT3065-1.5, LT3065-1.8, LT3065-2.5, *Pin 9: GND for LT3065, ADJ for LT3065-1.2, LT3065-1.5, LT3065-1.8, LT3065-2.5,
LT3065-3.3, LT3065-5 LT3065-3.3, LT3065-5
*Pin 8: ADJ for LT3065, SENSE for LT3065-1.2, LT3065-1.5, LT3065-1.8, LT3065-2.5, *Pin 10: ADJ for LT3065, SENSE for LT3065-1.2, LT3065-1.5, LT3065-1.8, LT3065-2.5,
LT3065-3.3, LT3065-5 LT3065-3.3, LT3065-5
o r D i n F Ma T