LM3460M5X-1.5 National Semiconductor, LM3460M5X-1.5 Datasheet

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LM3460M5X-1.5

Manufacturer Part Number
LM3460M5X-1.5
Description
IC CONTROLLER PRECISION SOT23-5
Manufacturer
National Semiconductor
Datasheet

Specifications of LM3460M5X-1.5

Controller Type
Precision Controller
Voltage - Supply
3 V ~ 3.6 V
Current - Supply
85mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5, SC-74A, SOT-25
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Interface
-
Other names
*LM3460M5X-1.5

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM3460M5X-1.5
Manufacturer:
NS
Quantity:
5 321
Part Number:
LM3460M5X-1.5
Manufacturer:
TI/德州仪器
Quantity:
20 000
© 2005 National Semiconductor Corporation
LM3460-1.2, -1.5
Precision Controller for GTLp and GTL Bus Termination
General Description
The LM3460 is a monolithic integrated circuit designed for
precision control of GTLplus and GTL Bus termination. This
controller is available in a tiny SOT23-5 package, and in-
cludes an internally compensated op amp, a bandgap refer-
ence, an NPN output transistor, and voltage setting resistors.
A trimmed precision bandgap voltage reference utilizes tem-
perature drift curvature correction for excellent voltage sta-
bility over the operating range. The precision output control
enables the termination voltage to maintain tight regulation,
despite fast switching requirements on the bus.
The LM3460 controller is designed to be used with a high
current (
current needed for the bus termination. The wide bandwidth
of the feedback loop provides excellent transient response,
and greatly reduces the output capacitance required, thus
reducing cost and board space requirements.
Connection Diagram and Package
Information
*This resistor is not used on the LM3460-1.2.
Ordering Information
MARKING CODE: The first letter "D" identifies the part as a Driver, and the next two numbers define the voltage for the part. The fourth letter indicates the
grade, with "A" designating the prime grade of product.
AVAILABILITY: The SOT23-5 package is only available in quantity of 1000 on tape and reel (designated by the letters "M5" in the part number), or in quantity
of 3000 on tape and reel (indicated by the letters "M5X" in the part number).
Voltage
>
1.5
1.5
1.2
1.2
7A) NPN pass transistor to provide the high
LM3460 Functional Diagram
LM3460M5-1.5
LM3460M5X-1.5
LM3460M5-1.2
LM3460M5X-1.5
Order Number
DS012603
01260301
Package Marking
D06A
D06A
D09A
D09A
Features
n Precision output (1%)
n Output voltage can be adjusted
n Extremely fast transient response in GTLp and GTL bus
n Tiny SOT23-5 package
n Output voltage capability for GTL or GTLp
n Low temperature coefficient
Applications
n GTL bus termination (1.2V output
n GTLp bus termination (1.5V output
n Adjustable high-current linear regulator
5-Lead Outline Package (M5)
*No internal connection, but should be soldered to PC board for best heat
transfer.
termination
1000 Unit Increments on Tape and Reel
3000 Unit Increments on Tape and Reel
1000 Unit Increments on Tape and Reel
3000 Unit Increments on Tape and Reel
See NS package Number MF05A
Actual Size
Top View
01260302
Supplied As
01260303
@
@
7A)
7A)
www.national.com
March 2005

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LM3460M5X-1.5 Summary of contents

Page 1

... LM3460M5-1.2 1.2 LM3460M5X-1.5 MARKING CODE: The first letter "D" identifies the part as a Driver, and the next two numbers define the voltage for the part. The fourth letter indicates the grade, with "A" designating the prime grade of product. AVAILABILITY: The SOT23-5 package is only available in quantity of 1000 on tape and reel (designated by the letters "M5" in the part number quantity of 3000 on tape and reel (indicated by the letters " ...

Page 2

Typical Applications FIGURE 1. 1.5V Typical Application (See Application Information Section) FIGURE 2. 1.2V Typical Application (See Application Information Section) www.national.com 2 01260304 01260305 ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage V IN Output Current Junction Temperature Storage Temperature Lead Temperature Vapor Phase (60 sec.) Infared (15 sec.) Power Dissipation (T = 25˚C) A (Note 2) Electrical Characteristics LM3460-1 ...

Page 4

Electrical Characteristics LM3460-1.2 Specifications with standard type face are for T ture Range. Unless otherwise specified, (+) Symbol Parameter V Regulated Voltage REG Regulated Voltage Tolerance I Quiescent Current q G Transconductance m ∆I / ∆V OUT REG ...

Page 5

Product Description The LM3460 is a shunt regulator designed for use as a precision control element in a feedback loop. The regulated output voltage is sensed between the IN pin and GROUND pin of the LM3460. The output of the ...

Page 6

Setting the Output Voltage If a regulated voltage is desired which is not available as a standard voltage, the output voltage may be adjusted by using an external resistive divider (see Figure 4): FOR BEST RESULTS: SELECT R A FIGURE ...

Page 7

App Circuit Technical Information (Continued) FIGURE 6. Q4 Heatsink Requirements for Circuit Shown in Figure 1 These values are calculated assuming a maximum ambient of 50˚C, 3.3V input, and a TO-220 power transistor mounted using thermal grease and a mica ...

Page 8

App Circuit Technical Information (Continued) In the circuit of Figure 2, drive for Q1 is provided by R7, but only when U1 sources current: The operation of the drive scheme is as follows: If the voltage below ...

Page 9

... 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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