LP8340ILDX-1.8 National Semiconductor, LP8340ILDX-1.8 Datasheet

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LP8340ILDX-1.8

Manufacturer Part Number
LP8340ILDX-1.8
Description
IC REG LDO 1A 1.8V 6-LLP
Manufacturer
National Semiconductor
Datasheet

Specifications of LP8340ILDX-1.8

Regulator Topology
Positive Fixed
Voltage - Output
1.8V
Voltage - Input
2.7 ~ 10 V
Voltage - Dropout (typical)
0.68V @ 800mA
Number Of Regulators
1
Current - Output
1A
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
6-LLP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Limit (min)
-
© 2005 National Semiconductor Corporation
LP8340
Low Dropout, Low I
General Description
The LP8340 low-dropout CMOS linear regulator is available
in 5V, 3.3V, 2.5V, 1.8V and adjustable output versions. Pack-
aged in the 6ld LLP package and 3ld DPAK. The LP8340 can
deliver up to 1.0A output current.
Typical dropout voltage is 420mV at 1.0A for the 5.0V ver-
sion, 540mV at 1.0A for the 3.3V version, 670mV at 1.0A for
the 2.5V version and 680mV at 800mA for the 1.8V version.
The LP8340 includes a zener trimmed bandgap voltage
reference, foldback current limiting and thermal overload
limiting.
The LP8340 features a PMOS output transistor which unlike
PNP type low dropout regulators requires no base drive
current. This allows the device ground current to remain less
than 50µA over operating temperature, supply voltage and
irrespective of the load current.
Typical Applications
DS200609
Q
, 1.0A CMOS Linear Regulator
Adjustable V
Fixed V
Features
n
n 420mV Typical Dropout
n Wide Operating Range
n Internal 1.0A PMOS Output Transistor
n 19µA Typical Quiescent Current
n Thermal Overload Limiting
n Foldback Current Limiting
n Zener Trimmed Bandgap Reference
n Space saving LLP package
n Temperature Range
Applications
n Hard Disk Drives
n Notebook Computers
n Battery Powered Electronics
n Portable Instrumentation
OUT
±
— LP8340C
— LP8340I
OUT
1.5% Typical V
OUT
tolerance
20060901
20060902
@
1.0A (V
O
= 5V)
−40˚C to 125˚C
www.national.com
0˚C to 125˚C
2.7V to 10V
May 2005

Related parts for LP8340ILDX-1.8

LP8340ILDX-1.8 Summary of contents

Page 1

... PNP type low dropout regulators requires no base drive current. This allows the device ground current to remain less than 50µA over operating temperature, supply voltage and irrespective of the load current. Typical Applications © 2005 National Semiconductor Corporation , 1.0A CMOS Linear Regulator Q Features ± ...

Page 2

... Ordering Information Package Part Number 6-Pin LLP LP8340CLD-ADJ LP8340CLDX-ADJ LP8340CLD-1.8 LP8340CLDX-1.8 LP8340CLD-2.5 LP8340CLDX-2.5 LP8340CLD-3.3 LP8340CLDX-3.3 LP8340CLD-5.0 LP8340CLDX-5.0 LP8340ILD-ADJ LP8340ILDX-ADJ LP8340ILD-1.8 LP8340ILDX-1.8 LP8340ILD-2.5 LP8340ILDX-2.5 LP8340ILD-3.3 LP8340ILDX-3.3 LP8340ILD-5.0 LP8340ILDX-5.0 3-Pin DPAK LP8340CDT-1.8 LP8340CDTX-1.8 LP8340CDT-2.5 LP8340CDTX-2.5 LP8340CDT-3.3 LP8340CDTX-3.3 LP8340CDT-5.0 LP8340CDTX-5.0 LP8340IDT-1.8 LP8340IDTX-1.8 LP8340IDT-2.5 LP8340IDTX-2.5 LP8340IDT-3 ...

Page 3

Connection Diagrams 6-Pin LLP FIXED OUTPUT VOLTAGE Bottom View Note: V Pins (Pin 1 & 6) must be connected together externally for full 1 amp operation (500mA max per pin Sense (Pin 5) must be connected to V ...

Page 4

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications Sense, ADJ IN OUT OUT Storage Temperature Range Junction Temperature ( Power Dissipation ESD Rating LP8340C Electrical Characteristics Unless otherwise specified all limits guaranteed for V ...

Page 5

LP8340C Electrical Characteristics Unless otherwise specified all limits guaranteed for V the full operating temperature range of T Symbol Parameter V − V Dropout Voltage LP8340-1 (Note 7) (Note 8) I OUT LP8340-2.5 I OUT LP8340-2.5 I OUT ...

Page 6

LP8340I Electrical Characteristics Unless otherwise specified all limits guaranteed for V the full operating temperature range of T Symbol Parameter V Output Voltage OUT ∆V Load Regulation O ∆V Line Regulation O V − V Dropout Voltage IN O (Note ...

Page 7

LP8340I Electrical Characteristics Unless otherwise specified all limits guaranteed for V the full operating temperature range of T Symbol Parameter T Thermal Shutdown SD Temp. Thermal Shutdown Hyst. ADJ Input Leakage V Current V Leakage Current LP8340-ADJ OUT ADJ = ...

Page 8

Typical Performance Characteristics Unless otherwise specified Output Voltage Change vs. Temperature Ground Current vs. Temperature (I Ground Current vs. Input Voltage www.national.com + 1.5V 10µF X7R ceramic OUT 20060907 ...

Page 9

Typical Performance Characteristics LP8340-1.8V Min V Load Transient Response Start-up Response (Continued) IN 20060919 Line Transient Response (I 20060913 Minimum Input Voltage Rise Time 20060915 9 LP8340-ADJ Min V IN 20060920 = 10mA) LOAD 20060914 20060921 www.national.com ...

Page 10

Typical Performance Characteristics Minimum Input Voltage Rise Time Minimum Input Voltage Rise Time www.national.com (Continued) Minimum Input Voltage Rise Time 20060922 Minimum Input Voltage Rise Time 20060924 10 20060923 20060925 ...

Page 11

Applications Section GENERAL INFORMATION The LP8340 is a low-dropout, low quiescent current linear regulator. As shown in Figure 1 it consists of a 1.25V refer- ence, error amplifier, MOSFET driver, PMOS pass transistor and for the fixed output versions, an ...

Page 12

Applications Section START UP CONSIDERATIONS Under certain operating conditions, overshoot of V start-up can occur. The observed overshoot is a function of rise time of V waveform start-up load current, and IN OUT www.national.com V −V (Continued) IN ...

Page 13

Physical Dimensions inches (millimeters) unless otherwise noted 6-Pin LLP NS Package Number LDE06A 3-Pin DPAK NS Package Number TD03B 13 www.national.com ...

Page 14

... BANNED SUBSTANCE COMPLIANCE National Semiconductor manufactures products and uses packing materials that meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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