lt3014bes5-trpbf Linear Technology Corporation, lt3014bes5-trpbf Datasheet

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lt3014bes5-trpbf

Manufacturer Part Number
lt3014bes5-trpbf
Description
20ma, 3v To 80v Low Dropout Micropower Linear Regulator
Manufacturer
Linear Technology Corporation
Datasheet
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
Wide Input Voltage Range: 3V to 80V
Low Quiescent Current: 7µA
Low Dropout Voltage: 350mV
Output Current: 20mA
LT3014HV Survives 100V Transients (2ms)
No Protection Diodes Needed
Adjustable Output from 1.22V to 60V
1µA Quiescent Current in Shutdown
Stable with 0.47µF Output Capacitor
Stable with Aluminum, Tantalum or Ceramic
Capacitors
Reverse-Battery Protection
No Reverse Current Flow from Output
Thermal Limiting
Available in 5-Lead ThinSOT
8-Lead DFN Packages
Low Current High Voltage Regulators
Regulator for Battery-Powered Systems
Telecom Applications
Automotive Applications
V
<0.3V
>2.0V
SHDN
V
5.4V TO
80V
IN
OUTPUT
OFF
ON
5V Supply with Shutdown
U
1µF
IN
SHDN
LT3014
GND
TM
OUT
U
ADJ
and
3.92M
1.27M
3014 TA01
V
5V
20mA
0.47µF
OUT
DESCRIPTIO
The LT
linear regulator. The device is capable of supplying 20mA
of output current with a dropout voltage of 350mV. De-
signed for use in battery-powered or high voltage sys-
tems, the low quiescent current (7µA operating and 1µA in
shutdown) makes the LT3014 an ideal choice. Quiescent
current is also well controlled in dropout.
Other features of the LT3014 include the ability to operate
with very small output capacitors. The regulators are
stable with only 0.47µF on the output while most older
devices require between 10µF and 100µF for stability.
Small ceramic capacitors can be used without the neces-
sary addition of ESR as is common with other regulators.
Internal protection circuitry includes reverse-battery pro-
tection, current limiting, thermal limiting and reverse
current protection.
The device is available as an adjustable device with a 1.22V
reference voltage. The LT3014 regulator is available in the
5-lead ThinSOT and 8-lead DFN packages.
ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 6118263, 6144250.
Low Dropout Micropower
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
®
3014 is a high voltage, micropower low dropout
400
350
300
250
200
150
100
50
0
0
2
4
U
OUTPUT CURRENT (mA)
20mA, 3V to 80V
Dropout Voltage
Linear Regulator
6
8
10 12
14 16 18 20
3014 TA02
LT3014
3014fb
1

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lt3014bes5-trpbf Summary of contents

Page 1

... The device is available as an adjustable device with a 1.22V reference voltage. The LT3014 regulator is available in the 5-lead ThinSOT and 8-lead DFN packages. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. ...

Page 2

LT3014 ABSOLUTE AXI U RATI GS IN Pin Voltage, Operating ................................. ±80V Transient (2ms Survival, LT3014HV) .............. +100V OUT Pin Voltage ............................................... ±60V IN to OUT Differential Voltage ........................... ±80V ADJ Pin Voltage .................................................. ±7V SHDN Pin ...

Page 3

ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at T PARAMETER CONDITIONS Dropout Voltage I LOAD (Notes OUT(NOMINAL) LOAD I LOAD I LOAD I ...

Page 4

LT3014 W U TYPICAL PERFOR A CE CHARACTERISTICS Typical Dropout Voltage 500 450 400 T = 125°C J 350 300 T = 25°C 250 J 200 150 100 ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS SHDN Pin Current 1 25°C J CURRENT FLOWS OUT OF SHDN PIN 1.0 0.8 0.6 0.4 0 0.5 1 1.5 2 2.5 3 3.5 4 SHDN PIN VOLTAGE (V) ...

Page 6

LT3014 W U TYPICAL PERFOR A CE CHARACTERISTICS Minimum Input Voltage 3 20mA LOAD 3.0 2.5 2.0 1.5 1.0 0.5 0 –50 – 100 125 TEMPERATURE (°C) 3014 G19 10Hz to 100kHz Output Noise ...

Page 7

CTIO S (SOT-23 Package/DD Package) ADJ (Pin 4/Pin 2): Adjust. This is the input to the error amplifier. This pin is internally clamped to ±7V. It has a bias current of 4nA which flows into ...

Page 8

LT3014 U U APPLICATIO S I FOR ATIO Extra consideration must be given to the use of ceramic capacitors. Ceramic capacitors are manufactured with a variety of dielectrics, each with different behavior across temperature and applied voltage. The most common ...

Page 9

U U APPLICATIO S I FOR ATIO The LT3014 regulator has internal thermal limiting de- signed to protect the device during overload conditions. For continuous normal conditions the maximum junction temperature rating of 125°C must not be exceeded ...

Page 10

LT3014 U U APPLICATIO S I FOR ATIO The maximum junction temperature will then be equal to the maximum junction temperature rise above ambient plus the maximum ambient temperature or 50°C + 26°C = 76°C JMAX Example 2: ...

Page 11

U U APPLICATIO S I FOR ATIO In situations where the ADJ pin is connected to a resistor divider that would pull the ADJ pin above its 7V clamp voltage if the output is pulled high, the ADJ pin input ...

Page 12

LT3014 U TYPICAL APPLICATIO S 5V Buck Converter with Low Current Keep Alive Backup V IN 5.5V 60V 4.7µF 100V CERAMIC OPERATING CURRENT LOW HIGH 12 D2 D1N914 6 C2 † L1 0.33µF BOOST 15µ ...

Page 13

U TYPICAL APPLICATIO 12V 1µF (LATER 42V) OFF 48V (72V TRANSIENT) 1µF OFF ON Constant Brightness for Indicator LED over Wide Input Voltage Range LT3014 Automotive Application IN OUT NO PROTECTION LT3014 DIODE ...

Page 14

LT3014 PACKAGE DESCRIPTIO 0.62 MAX 3.85 MAX 2.62 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.20 BSC DATUM ‘A’ 0.30 – 0.50 REF NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF ...

Page 15

... TOP MARK (NOTE 6) 0.200 REF Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights Package 8-Lead Plastic DFN (3mm × ...

Page 16

... I = 120µA, I <1µ 1.22V 0.30V 40µA, I <1µ 1.22V 0.30V 60µA, I <1µ 1.22V 0.30V 40µA, I <1µ 1.22V 0.30V 60µA, I <1µ LT/LWI 0706 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2005 3014fb ...

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