LM3578AN/NOPB National Semiconductor, LM3578AN/NOPB Datasheet

IC REGULATOR SWITCHING 8-DIP

LM3578AN/NOPB

Manufacturer Part Number
LM3578AN/NOPB
Description
IC REGULATOR SWITCHING 8-DIP
Manufacturer
National Semiconductor
Type
Step-Down (Buck), Step-Up (Boost), Inverting, Flybackr
Datasheets

Specifications of LM3578AN/NOPB

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Current - Output
750mA
Frequency - Switching
20kHz
Voltage - Input
2 ~ 40 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Current, Input Bias
4 μA
Current, Output
750 mA
Current, Supply
14 mA
Frequency, Oscillator
20 kHz
Package Type
DIP-8
Regulation, Line
0.003 %/V
Regulator Type
Boost, Buck, DC-DC, Switching
Temperature, Operating, Range
0 to +125 °C
Voltage, Input
2 to 40 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Power - Output
-
Lead Free Status / Rohs Status
RoHS Compliant part Electrostatic Device
Other names
*LM3578AN
*LM3578AN/NOPB
LM3578AN
LM3578N
LM2578A/LM3578A
Switching Regulator
General Description
The LM2578A is a switching regulator which can easily be
set up for such DC-to-DC voltage conversion circuits as the
buck, boost, and inverting configurations. The LM2578A fea-
tures a unique comparator input stage which not only has
separate pins for both the inverting and non-inverting inputs,
but also provides an internal 1.0V reference to each input,
thereby simplifying circuit design and p.c. board layout. The
output can switch up to 750 mA and has output pins for its
collector and emitter to promote design flexibility. An external
current limit terminal may be referenced to either the ground
or the V
tion, the LM2578A has an on board oscillator, which sets the
switching frequency with a single external capacitor from
Hz to 100 kHz (typical).
The LM2578A is an improved version of the LM2578, offer-
ing higher maximum ratings for the total supply voltage and
output transistor emitter and collector voltages.
Connection Diagram and Ordering Information
in
terminal, depending upon the application. In addi-
Order Number LM3578AM, LM2578AN or LM3578AN
See NS Package Number M08A or N08E
Dual-In-Line Package
<
1
Features
n Inverting and non-inverting feedback inputs
n 1.0V reference at inputs
n Operates from supply voltages of 2V to 40V
n Output current up to 750 mA, saturation less than 0.9V
n Current limit and thermal shut down
n Duty cycle up to 90%
Applications
n Switching regulators in buck, boost, inverting, and
n Motor speed control
n Lamp flasher
single-ended transformer configurations
00871129

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LM3578AN/NOPB Summary of contents

Page 1

LM2578A/LM3578A Switching Regulator General Description The LM2578A is a switching regulator which can easily be set up for such DC-to-DC voltage conversion circuits as the buck, boost, and inverting configurations. The LM2578A fea- tures a unique comparator input stage which ...

Page 2

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Total Supply Voltage Collector Output to Ground Emitter Output to Ground (Note 2) Power Dissipation (Note 3) Output Current Storage Temperature Lead Temperature (soldering, 10 seconds) ...

Page 3

Electrical Characteristics These specifications apply for 2V ≤ V duty cycle ≤ 75%, unless otherwise specified. Values in standard typeface are for T operation over the specified operating junction temperature range. Symbol Parameter CURRENT LIMIT ∆V /∆T Sense Voltage Temperature ...

Page 4

... 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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