lt3013befe-trpbf Linear Technology Corporation, lt3013befe-trpbf Datasheet

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lt3013befe-trpbf

Manufacturer Part Number
lt3013befe-trpbf
Description
250ma, 4v To 80v Low Dropout Micropower Linear Regulator With Pwrgd
Manufacturer
Linear Technology Corporation
Datasheet
FEATURES
APPLICATIONS
TYPICAL APPLICATION
Wide Input Voltage Range: 4V to 80V
Low Quiescent Current: 65μA
Low Dropout Voltage: 400mV
Output Current: 250mA
No Protection Diodes Needed
Adjustable Output from 1.24V to 60V
1μA Quiescent Current in Shutdown
Stable with 3.3μF Output Capacitor
Stable with Aluminum, Tantalum or Ceramic
Capacitors
Reverse-Battery Protection
No Reverse Current Flow from Output to Input
Thermal Limiting
Thermally Enhanced 16-Lead TSSOP and
12-Pin (4mm × 3mm) DFN Package
Low Current High Voltage Regulators
Regulator for Battery-Powered Systems
Telecom Applications
Automotive Applications
V
5.4V TO
80V
V
<0.3V
>2.0V
IN
SHDN
OUTPUT
1µF
OFF
ON
5V Supply with Shutdown
1.6M
IN
SHDN
PWRGD
GND
LT3013
C
OUT
ADJ
T
1000pF
750k
249k
3013 TA01
3.3µF
V
5V
250mA
OUT
Linear Regulator with PWRGD
DESCRIPTION
The LT
linear regulator. The device is capable of supplying 250mA
of output current with a dropout voltage of 400mV. Designed
for use in battery-powered or high voltage systems, the low
quiescent current (65μA operating and 1μA in shutdown)
makes the LT3013 an ideal choice. Quiescent current is
also well controlled in dropout.
Other features of the LT3013 include a PWRGD fl ag to
indicate output regulation. The delay between regulated
output level and fl ag indication is programmable with a
single capacitor. The LT3013 also has the ability to operate
with very small output capacitors. The regulator is stable
with only 3.3μF on the output while most older devices
require between 10μF and 100μF for stability. Small ce-
ramic capacitors can be used without any need for series
resistance (ESR) as is common with other regulators.
Internal protection circuitry includes reverse-battery
protection, current limiting, thermal limiting and reverse
current protection.
The device is available with an adjustable output with a
1.24V reference voltage. The LT3013 regulator is available
in the thermally enhanced 16-lead TSSOP and the low
profi le (0.75mm), 12-pin (4mm × 3mm) DFN package,
both providing excellent thermal characteristics.
All other trademarks are the property of their respective owners.
Low Dropout Micropower
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
®
3013 is a high voltage, micropower low dropout
400
350
300
250
200
150
100
50
0
0
250mA, 4V to 80V
50
OUTPUT CURRENT (mA)
Dropout Voltage
100
150
200
3013 TA02
LT3013
250
3013fc
1

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lt3013befe-trpbf Summary of contents

Page 1

... TSSOP and the low profi le (0.75mm), 12-pin (4mm × 3mm) DFN package, both providing excellent thermal characteristics. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. V OUT ...

Page 2

LT3013 ABSOLUTE MAXIMUM RATINGS (Note 1) IN Pin Voltage .........................................................±80V OUT Pin Voltage ......................................................±60V IN to OUT Differential Voltage .................................±80V ADJ Pin Voltage ....................................................... ±7V ⎯ S ⎯ H ⎯ D ⎯ N Pin Input Voltage ..........................................±80V CT Pin Voltage ...

Page 3

ELECTRICAL CHARACTERISTICS ● The denotes the specifi cations which apply over the –40°C to 125°C operating temperature range, otherwise specifi cations are at T PARAMETER CONDITIONS Minimum Input Voltage I = 250mA LOAD ADJ Pin Voltage (Notes 2, ...

Page 4

LT3013 ELECTRICAL CHARACTERISTICS The ● denotes the specifi cations which apply over the –40°C to 140°C operating temperature range, otherwise specifi cations are at T PARAMETER CONDITIONS Dropout Voltage I = 10mA LOAD (Notes ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Typical Dropout Voltage 600 500 T = 125°C J 400 T = 25°C 300 J 200 100 100 150 200 OUTPUT CURRENT (mA) 3013 G01 Quiescent Current 120 ∞ ...

Page 6

LT3013 TYPICAL PERFORMANCE CHARACTERISTICS Quiescent Current 25°C J ∞ SHDN GND SHDN ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS ⎯ S ⎯ H ⎯ D ⎯ N Pin Threshold 2.0 1.8 1.6 OFF-TO-ON 1.4 1.2 1.0 ON-TO-OFF 0.8 0.6 0.4 0.2 0 –50 – 100 125 TEMPERATURE (°C) 3013 G10 ADJ Pin ...

Page 8

LT3013 TYPICAL PERFORMANCE CHARACTERISTICS PWRGD Output Low Voltage 200 I = 50µA PWRGD 180 160 140 120 100 125 –50 – 100 TEMPERATURE (°C) 3013 G26 Current Limit 1000 V = ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS Reverse Output Current 200 T = 25°C J 180 OUT ADJ 160 140 120 CURRENT FLOWS 100 ADJ INTO OUTPUT PIN PIN CLAMP 80 (SEE APPLICATIONS INFORMATION ...

Page 10

LT3013 TYPICAL PERFORMANCE CHARACTERISTICS Load Regulation 0 ∆I = 1mA TO 250mA L –2 –4 –6 –8 –10 –12 –14 –16 –18 –20 – –25 TEMPERATURE (°C) 10Hz to 100kHz Output Noise V OUT 100µV/DIV C ...

Page 11

PIN FUNCTIONS (DFN Package)/(TSSOP Package) NC (Pins 1, 9, 12)/(Pins 2, 12, 15): No Connect. These pins have no internal connection; connecting NC pins to a copper area for heat dissipation provides a small improve- ment in thermal performance. OUT ...

Page 12

LT3013 APPLICATIONS INFORMATION The LT3013 is a 250mA high voltage low dropout regula- tor with micropower quiescent current and shutdown. The device is capable of supplying 250mA at a dropout voltage of 400mV. The low operating quiescent current (65μA) drops ...

Page 13

APPLICATIONS INFORMATION 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 dielectrics used are specifi ed with ...

Page 14

LT3013 APPLICATIONS INFORMATION Figure 4 shows a block diagram of the PWRGD circuit. At startup, the timing capacitor is discharged and the PWRGD pin will be held low. As the output voltage increases and the ADJ pin crosses the 90% ...

Page 15

APPLICATIONS INFORMATION For surface mount devices, heat sinking is accomplished by using the heat spreading capabilities of the PC board and its copper traces. Copper board stiffeners and plated through-holes can also be used to spread the heat gener- ated ...

Page 16

LT3013 APPLICATIONS INFORMATION Operation at the different power levels is as follows: 76% operation at P1, 19% for P2, 4% for P3, and 1% for P4 76%(0.23W) + 19%(8.98W) + 4%(0.35W) EFF + 1%(13.98W) = 2.03W With a ...

Page 17

APPLICATIONS INFORMATION In situations where the ADJ pin is connected to a resistor divider that would pull the ADJ pin above its 7V clamp volt- age if the output is pulled high, the ADJ pin input current must be limited ...

Page 18

LT3013 TYPICAL APPLICATIONS 6 BOOST 5.5V 60V C3 4.7µF LT1766 100V CERAMIC 15 10 SHDN BIAS 14 12 SYNC FB GND 1nF 14 ...

Page 19

... DIMENSIONS ARE IN 3. DRAWING NOT TO SCALE 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. DE Package 12-Lead Plastic DFN (4mm × ...

Page 20

... Low Noise Micropower LDO LT3012/LT3012H 250mA 80V, Low Dropout Micropower Linear Regulator LT3014/HV 20mA 80V, Low Dropout Micropower Linear Regulator ThinSOT is a trademark of Linear Technology Corporation. Linear Technology Corporation 20 1630 McCarthy Blvd., Milpitas, CA 95035-7417 ● (408) 432-1900 FAX: (408) 434-0507 ...

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