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CYStech Electronics Corp.
Low Current Positive Voltage Regulator
Spec. No. : C515M3 Issued Date : 2003.04.02 Revised Date : 2005.01.11 . Page No. : 1/4
SOT-89
LM78L05XM3
Description
OGI
The LM78L05XM3 series of surface mount regulators are easy-touse devices suitable for multitude of applications that require a regulated supply of up to 100mA. These regulators feature internal current limiting and thermal shutdown, making them remarkably rugged. No external components are required with the LM78L05XM3 devices in many applications. These devices offer a substantial performance advantage over the traditional zener diode resistor combination, as output impedance and quiescent current are substantially reduced.
Features:
* Wide Range Of Available, Fixed Output Voltages * Internal Short-Circuit Current Limiting * Internal Thermal Overload Protection * No External Components Required * Pb-free package
* Input Voltage....................................................................................................................................................... 30 V * Total Power Dissipation.................................................................................................................. Internally limited * Operating Temperature Range .......................................................................................................... 0 C to +125 C * Maximum Junction Temperature ..................................................................................................................... 125 C * Storage Temperature Range ........................................................................................................... -55 C to +150 C * Lead Temperature (Soldering 10S) .................................................................................................................. 260 C
Absolute Maximum Ratings (Ta=25C)
Typical Application
Vin
3
Schematic Diagram
Vout
Vin
LM78L05
1
5K
5.7K
2
100
100 1.5K 1.9K Vout 5pF 3.41K 13K 2.23K 7.8K
C1
C2
576
A common ground is required between the input and the output voltages. The input voltage must remain typically 2.0V above the output voltage even during the low point on the input ripple voltage.
Note : C1 and C2 are required if regulator is located far from power supply filter and load, or oscillation may induced on the loop.
3.89K
2.84K GND
LM78L05XM3
CYStek Product Specification
CYStech Electronics Corp.
Electrical Characteristics
Vin=10V, Io=40mA, Tj=25C Cin=0.33uF, Cout=0.1uF (unless otherwise noted)
Spec. No. : C515M3 Issued Date : 2003.04.02 Revised Date : 2005.01.11 . Page No. : 2/4
Symbol Vo Vo Vo IQ
Parameter Output Voltage Line Regulation Load Regulation
Conditions Tj=25C 7VVin25V, 1mAIo40mA 1mAIo70mA 7VVin20V 8VVin20V 1mAIo100mA 1mAIo40mA Ta=25C 8VVin20V 1mAIo40mA 10Hzf100KHz 8VVin16V, f=120Hz Ta=25C Ta=25C Conditions Tj=25C 7VVin25V, 1mAIo40mA 1mAIo70mA 7VVin20V 8VVin20V 1mAIo100mA 1mAIo40mA Ta=25C 8VVin20V 1mAIo40mA 10Hzf100KHz 8VVin16V, f=120Hz Ta=25C Ta=25C
Quiescent Current Quiescent Current IQ Change Vn Output Noise Voltage Ripple Rejection Vin / Vout Ipk Peak Output Current VD Dropout Voltage Symbol Vo Vo Vo IQ Parameter Output Voltage Line Regulation Load Regulation
LM78L05A Min Typ Max 4.85 5 5.15 4.75 5 5.25 4.75 5 5.25 150 100 60 30 5 1 0.1 40 47 62 140 1.7 LM78L05B Min Typ Max 4.75 5 5.25 4.75 5 5.25 4.75 5 5.25 150 100 60 30 5 1 0.1 40 47 62 140 1.7 -
Units V mV mV mA mA uV dB mA V Units V mV mV mA mA uV dB mA V
Quiescent Current Quiescent Current IQ Change Vn Output Noise Voltage Vin / Vout Ripple Rejection Ipk Peak Output Current VD Dropout Voltage
LM78L05XM3
CYStek Product Specification
CYStech Electronics Corp.
Characteristic Curves
Dropout Characteristics
Spec. No. : C515M3 Issued Date : 2003.04.02 Revised Date : 2005.01.11 . Page No. : 3/4
Maximum Average Power Dissipation
6 5 4 3 2
Io=100mA
10000
Output Voltage(V)
Io=1mA Io=40mA
Power Dissipation (mW)
1000
1 0 1 2 3 4 5 6 7 8 9 10
100 25 50 75 100 125 150
Input Voltage(V)
Quiescent Current 4 3.5
Quiescent Current(mA) Quiescent Current(mA)
Ambient Temperature (C)
Quiescent Current 3.4
3 2.5 2 1.5 1 0.5 0 0 5 10 15 20 25 Input Voltage(V) 30 35
3.2
3
2.8
2.6 0 50 100 Ambient Temperature(C) 150
LM78L05XM3
CYStek Product Specification
CYStech Electronics Corp.
SOT-89 Dimension
Marking:
A
Spec. No. : C515M3 Issued Date : 2003.04.02 Revised Date : 2005.01.11 . Page No. : 4/4
1
2
C
3
H
78L05 78L05
B
D
Style: Pin 1. Vout 2. GND 3. Vin
E F G I
3-Lead SOT-89 Plastic Surface Mounted Package CYStek Package Code: M3
*: Typical
DIM A B C D E
Inches Min. Max. 0.1732 0.1811 0.1594 0.1673 0.0591 0.0663 0.0945 0.1024 0.01417 0.0201
Millimeters Min. Max. 4.40 4.60 4.05 4.25 1.50 1.70 2.40 2.60 0.36 0.51
DIM F G H I
Inches Min. Max. 0.0583 0.0598 0.1165 0.1197 0.0551 0.0630 0.0138 0.0161
Millimeters Min. Max. 1.48 1.527 2.96 3.04 1.40 1.60 0.35 0.41
Notes: 1.Controlling dimension: millimeters.
2.Maximum lead thickness includes lead finish thickness, and minimum lead thickness is the minimum thickness of base material. 3.If there is any question with packing specification or packing method, please contact your local CYStek sales office.
Material:
* Lead: 42 Alloy ; solder plating * Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0
Important Notice:
* All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of CYStek. * CYStek reserves the right to make changes to its products without notice. * CYStek semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems. * CYStek assumes no liability for any consequence of customer product design, infringement of patents, or application assistance.
LM78L05XM3
CYStek Product Specification

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