lt3011emse Linear Technology Corporation, lt3011emse Datasheet

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lt3011emse

Manufacturer Part Number
lt3011emse
Description
50ma, 3v To 80v Low Dropout Micropower Linear Regulator With Pwrgd
Manufacturer
Linear Technology Corporation
Datasheet

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FEATURES
APPLICATIONS
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TYPICAL APPLICATION
Wide Input Voltage Range: 3V to 80V
Low Quiescent Current: 46μA
Low Dropout Voltage: 300mV
Output Current: 50mA
PWRGD Flag with Programmable Delay
No Protection Diodes Needed
Adjustable Output from 1.24V to 60V
1μA Quiescent Current in Shutdown
Stable with 1μF Output Capacitor
Stable with Ceramic, Tantalum, and Aluminum
Capacitors
Reverse-Battery Protection
No Reverse Current Flow from Output to Input
Thermal Limiting
Thermally Enhanced 12-Lead MSOP and
10-Pin (3mm × 3mm) DFN Packages
Low Current High Voltage Regulators
Regulator for Battery-Powered Systems
Telecom Applications
Automotive Applications
V
<0.3V
>2.0V
V
3V TO
80V
SHDN
IN
OUTPUT
POWER GOOD
1μF
OFF
ON
5V Supply with Shutdown
1.6M
IN
SHDN
PWRGD
GND
LT3011
C
OUT
ADJ
T
1000pF
750k
249k
1μF
V
5V
50mA
3011 TA01
OUT
Dropout Micropower Linear
DESCRIPTION
The LT
linear regulator. The device is capable of supplying 50mA of
output current with a dropout voltage of 300mV. Designed
for use in battery-powered high voltage systems, the low
quiescent current (46μA operating and 1μA in shutdown)
is well controlled in dropout, making the LT3011 an ideal
choice.
The LT3011 includes 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 LT3011 also has the ability to operate with very small
output capacitors; it is stable with only 1μF on the output.
Small ceramic capacitors can be used without the addition
of any 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 LT3011 features an adjustable output with a 1.24V
reference voltage. The device is available in the thermally
enhanced 12-lead MSOP and the low profi le (0.75mm)
10-pin (3mm × 3mm) DFN package, both providing excel-
lent thermal characteristics.
All other trademarks are the property of their respective owners.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
®
Regulator with PWRGD
3011 is a high voltage, micropower, low dropout
50mA, 3V to 80V Low
350
300
250
200
150
100
50
0
0
10
Dropout Voltage
OUTPUT CURRENT (mA)
20
30
40
3011 TA02
LT3011
50
1
3011f

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lt3011emse Summary of contents

Page 1

... The device is available in the thermally enhanced 12-lead MSOP and the low profi le (0.75mm) 10-pin (3mm × 3mm) DFN package, both providing excel- lent thermal characteristics. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 350 V ...

Page 2

... TAPE AND REEL LT3011EDD LT3011EDD#TR LT3011IDD LT3011IDD#TR LT3011EMSE LT3011EMSE#TR LT3011HMSE LT3011HMSE#TR LT3011IMSE LT3011IMSE#TR Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. For more information on lead free part marking, go to: For more information on tape and reel specifi ...

Page 3

ELECTRICAL CHARACTERISTICS l The denotes the specifi cations which apply over the –40°C to 125°C operating temperature range, otherwise specifi cations are T PARAMETER CONDITIONS Minimum Input Voltage I = 50mA LOAD ADJ Pin Voltage (Notes ...

Page 4

LT3011 ELECTRICAL CHARACTERISTICS The l denotes the specifi cations which apply over the –40°C to 150°C operating temperature range, otherwise specifi cations are at T PARAMETER CONDITIONS Dropout Voltage I = 1mA LOAD 1mA IN ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Dropout Voltage 400 350 T 125 C J 300 250 200 150 100 OUTPUT CURRENT (mA) 3011 G01 Quiescent Current ...

Page 6

LT3011 TYPICAL PERFORMANCE CHARACTERISTICS SHDN Pin Current 0. 25°C J CURRENT FLOWS 0.24 OUT OF SHDN PIN 0.20 0.16 0.12 0.08 0. 0.5 1 1.5 2 2.5 3 3.5 4 4.5 SHDN PIN VOLTAGE (V) 3011 ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS Reverse Output Current 160 140 ADJ PIN CLAMP (SEE APPLICATIONS 120 INFORMATION) 100 25° CURRENT FLOWS 20 INTO OUTPUT PIN OUT ADJ 0 0 ...

Page 8

LT3011 PIN FUNCTIONS (DFN/MSOP) OUT (Pin 1/Pin 2): Output. The output supplies power to the load. A minimum output capacitor of 1μF is required to prevent oscillations. Larger capacitors will be required for applications with large transient loads to limit ...

Page 9

APPLICATIONS INFORMATION The LT3011 is a 50mA high voltage/low dropout regulator with micropower quiescent current and shutdown. The device is capable of supplying 50mA at a dropout voltage of 300mV. The low operating quiescent current (46μA) drops to 1μA in ...

Page 10

LT3011 APPLICATIONS INFORMATION in a small package, but they tend to have strong voltage and temperature coeffi cients, as shown in Figures 2 and 3. When used with a 5V regulator, a 16V 10μF Y5V capacitor can exhibit an effective ...

Page 11

APPLICATIONS INFORMATION During normal operation, an internal glitch fi lter will ignore short transients (<15μs). Longer transients below the 90% threshold will reset the JK fl ip-fl op. This fl ip-fl op ensures that the capacitor on the C pin ...

Page 12

LT3011 APPLICATIONS INFORMATION Calculating Junction Temperature Example 1: Given an output voltage of 5V, an input volt- age range of 24V to 30V, an output current range of 0mA to 50mA, and a maximum ambient temperature of 50°C, what will ...

Page 13

APPLICATIONS INFORMATION Current limit protection and thermal overload protection are intended to protect the device against current overload conditions at the output of the device. For normal opera- tion, the junction temperature should not exceed 125°C (LT3011E/LT3011I) or 150°C (LT3011H). ...

Page 14

LT3011 TYPICAL APPLICATIONS 6 BOOST 5.5V 60V C3 4.7 F LT1766 100V CERAMIC 15 SHDN 14 SYNC GND LT3011 OPERATING 100k 8 CURRENT SHDN HIGH 5 LOW PWRGD ...

Page 15

... LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX 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. ...

Page 16

... Micropower Linear Regulator LT3014/HV 20mA 80V, Low Dropout Micropower Linear Regulator LT3080/ 1.1A, Parallelable, Low Noise, Low LT3080-1 Dropout Linear Regulator ThinSOT is a trademark of Linear Technology Corporation. Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● RETURN ...

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