LT1962EMS8-5 Linear Technology, LT1962EMS8-5 Datasheet

IC LDO REG LOWNOISE 5V 8-MSOP

LT1962EMS8-5

Manufacturer Part Number
LT1962EMS8-5
Description
IC LDO REG LOWNOISE 5V 8-MSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LT1962EMS8-5

Regulator Topology
Positive Fixed
Voltage - Output
5V
Voltage - Input
Up to 20V
Voltage - Dropout (typical)
0.27V @ 300mA
Number Of Regulators
1
Current - Output
300mA
Current - Limit (min)
320mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Rohs Compliant
NO
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
Q962535

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FEATURES
TYPICAL APPLICATIO
APPLICATIO S
3.7V TO
20V
Low Noise: 20 V
Output Current: 300mA
Low Quiescent Current: 30 A
Wide Input Voltage Range: 1.8V to 20V
Low Dropout Voltage: 270mV
Very Low Shutdown Current: < 1 A
No Protection Diodes Needed
Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V
Adjustable Output from 1.22V to 20V
Stable with 3.3 F Output Capacitor
Stable with Aluminum, Tantalum or
Ceramic Capacitors
Reverse Battery Protection
No Reverse Current
Overcurrent and Overtemperature Protected
8-Lead MSOP Package
Cellular Phones
Battery-Powered Systems
Noise-Sensitive Instrumentation Systems
V
IN
1 F
3.3V Low Noise Regulator
U
RMS
IN
SHDN
LT1962-3.3
(10Hz to 100kHz)
GND
SENSE
OUT
BYP
1962 TA01
U
0.01 F
+
10 F
3.3V AT 300mA
20 V
RMS
NOISE
DESCRIPTIO
The LT
dropout regulators. The devices are capable of supplying
300mA of output current with a dropout voltage of 270mV.
Designed for use in battery-powered systems, the low
30 A quiescent current makes them an ideal choice.
Quiescent current is well controlled; it does not rise in
dropout as it does with many other regulators.
A key feature of the LT1962 regulators is low output noise.
With the addition of an external 0.01 F bypass capacitor,
output noise drops to 20 V
bandwidth. The LT1962 regulators are stable with output
capacitors as low as 3.3 F. Small ceramic capacitors can
be used without the series resistance required by other
regulators.
Internal protection circuitry includes reverse battery pro-
tection, current limiting, thermal limiting and reverse cur-
rent protection. The parts come in fixed output voltages of
1.5V, 1.8V, 2.5V, 3V, 3.3V and 5V, and as an adjustable
device with a 1.22V reference voltage. The LT1962 regu-
lators are available in the 8-lead MSOP package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
®
1962 series are micropower, low noise, low
400
350
300
250
200
150
100
50
0
0
300mA, Low Noise,
50
U
Dropout Voltage
LOAD CURRENT (mA)
100
LDO Regulators
150
RMS
Micropower
200
LT1962 Series
over a 10Hz to 100kHz
250
1962 TA02
300
1

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LT1962EMS8-5 Summary of contents

Page 1

... The parts come in fixed output voltages of 1.5V, 1.8V, 2.5V, 3V, 3.3V and 5V, and as an adjustable device with a 1.22V reference voltage. The LT1962 regu- lators are available in the 8-lead MSOP package. , LTC and LT are registered trademarks of Linear Technology Corporation. 400 350 300 3 ...

Page 2

... V = 2.8V 1mA to 300mA IN LOAD U W ORDER PART NUMBER LT1962EMS8 LT1962EMS8-1 LT1962EMS8-1.8 5 SHDN LT1962EMS8-2.5 LT1962EMS8-3 LT1962EMS8-3.3 LT1962EMS8-5 = 125 MS8 PART MARKING LTML LTPQ LTSZ LTPS LTTA LTPR LTPT = 25 C. (Note 3) A MIN TYP MAX UNITS 1.8 2.3 1.485 1.500 1.515 1.462 1.500 1 ...

Page 3

ELECTRICAL CHARACTERISTICS The denotes specifications which apply over the full operating temperature range, otherwise specifications are T PARAMETER CONDITIONS Load Regulation LT1962-2.5 LT1962-3 LT1962-3.3 LT1962-5 LT1962 (Note 4) Dropout Voltage I = 10mA LOAD 10mA ...

Page 4

LT1962 Series ELECTRICAL CHARACTERISTICS Note 5: Operating conditions are limited by maximum junction temperature. The regulated output voltage specification will not apply for all possible combinations of input voltage and output current. When operating at maximum input voltage, the output ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS LT1962-2.5 Output Voltage 2. 1mA L 2.53 2.52 2.51 2.50 2.49 2.48 2.47 2.46 – 50 – 100 125 TEMPERATURE ( C) 1962 G07 LT1962-5 Output ...

Page 6

LT1962 Series W U TYPICAL PERFOR A CE CHARACTERISTICS LT1962-3.3 Quiescent Current 800 700 L 600 500 400 300 200 SHDN 100 SHDN ...

Page 7

W U TYPICAL PERFOR A CE CHARACTERISTICS LT1962 GND Pin Current 1500 SHDN 1250 *FOR V = 1.22V OUT 50mA* 1000 L 750 500 R ...

Page 8

LT1962 Series W U TYPICAL PERFOR A CE CHARACTERISTICS SHDN Pin Threshold (On-to-Off) 1 1mA L 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0 125 –50 – 100 TEMPERATURE ( C) 1962 ...

Page 9

W U TYPICAL PERFOR A CE CHARACTERISTICS Input Ripple Rejection 300mA OUT(NOMINAL) + 50mV RIPPLE RMS BYP OUT 40 30 ...

Page 10

LT1962 Series W U TYPICAL PERFOR A CE CHARACTERISTICS LT1962-5 10Hz to 100kHz Output Noise ( BYP V OUT 100 V/DIV 1ms/DIV OUT 1962 G52 I = 300mA L LT1962-5 10Hz to 100kHz Output ...

Page 11

CTIO OUT LT1962 SHDN SENSE V IN GND 4 Figure 1. Kelvin Sense Connection pin. The ADJ pin voltage is 1.22V referenced to ground and the output voltage ...

Page 12

LT1962 Series U U APPLICATIO S I FOR ATIO IN OUT V LT1962 R2 IN ADJ R1 GND OUT ADJ ...

Page 13

U U APPLICATIO S I FOR ATIO temperature and applied voltage. The most common dielectrics used are Z5U, Y5V, X5R and X7R. The Z5U and Y5V dielectrics are good for providing high capacitance in a small package, but exhibit strong ...

Page 14

LT1962 Series U U APPLICATIO S I FOR ATIO 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 ...

Page 15

... INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE 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. ...

Page 16

... Fast Transient Response Low Dropout Regulator LT1772 Constant Frequency Current Mode Step-Down DC/DC Controller LT1963 1.5A, Fast Transient Response Low Dropout Regulator Burst Mode 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 www.linear-tech.com ...

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