LM1108F HTC Korea, LM1108F Datasheet

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LM1108F

Manufacturer Part Number
LM1108F
Description
300mA C-MOS L.D.O. Regulator
Manufacturer
HTC Korea
Datasheet

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Part Number:
LM1108F-1.5
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HTC
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20 000
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LM1108F-1.8
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HTC
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20 000
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LM1108F-2.5
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HTC
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Part Number:
LM1108F-2.7
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LM1108F-2.8
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LM1108F-3.0
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990
0702-01 Taejin Technology Co.,Ltd.
FEATURES
• Extremely Low Supply Current(50µA,Typ.)
• Very Low Dropout Voltage
• 300mA Output Current
• High Output Voltage Accuracy +/- 1.4 %
• Standardor Custom Output Voltages
• Over Currentand Over Temperature Protection
• Small input/output differential : 0.3V for full load
APPLICATIONS
• Battery Operated Systems
• Portable Computers
• Portable Cameras and Video Recorders
• Medical Instruments
• Instrumentation
• Cellular/GSM/PHS Phones
• Linear Post-Regulators for SMPS
• Pagers
DESCRIPTION
TYPICAL APPLICATION CIRCUIT
300mA C-MOS L.D.O. Regulator
The LM1108 is a fixed output,high accuracy(typically ±0.5%) C MOS low drop-out regulator.
Total supply current is typically 50µA at full load (20 to 60 times lower than in bipolar regulators).
LM1108 key features include ultra low noise operation, very low dropout voltage (typically 240mV at full
load), and fast response to step changes in load.
The LM1108 in corporates both over temperature and over current protection.
The LM1108 is stable with an output capacitor of only1µF and has a maximum out put current of 300mA.
It is available in a SOT-23 & SOT-89 package
1
ORDERING INFORMATION
LM1108 SF
LM1108 SF5
LM1108 F
(Note : "XX" is Output Voltage for SOT-23 Pkg,
SOT-23-5L
(SOT-25)
SOT-23
SOT-89
1.5V=H15, 1.8V=H18….3.3V=H33)
1.Vss 2.Vin 3.Vout 4. NC 5. NC
Device
1108 X.X
Marking
HXX
HXX
LM1108F/SF
Package
SOT-23
SOT-25
SOT-89
HTC

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LM1108F Summary of contents

Page 1

... SOT-23 ① SOT-23-5L (SOT-25) SOT-89 ① 1.Vss 2.Vin 3.Vout ORDERING INFORMATION Device Marking HXX LM1108 SF HXX LM1108 SF5 1108 X.X LM1108 F (Note : "XX" is Output Voltage for SOT-23 Pkg, 1.5V=H15, 1.8V=H18….3.3V=H33) 1 LM1108F/SF ② Package SOT-23 SOT-25 SOT-89 HTC ...

Page 2

... Operating Ambient Temperature (Topr) Lead Temperature (soldering, 5 sec) Storage Temperature (Tstg) ELECTRICAL CHARACTERISTICS Note.1 : Load Regulation is measured using pulse techniques with duty cycle<5% 0702-01 Taejin Technology Co.,Ltd. +6.5V 300 mA Vss-0.3 to Vin+0.3V 500 mW SOT-23 230 mW -30 ~ +80 °C 260°C -40 ~ +125 °C 2 LM1108F/SF HTC ...

Page 3

... The following equation is used to calculate worst case actual power dissipation: EQUATION 2-1: The maximum allowable power dissipation (Equation 2- function of the maximum ambient temperature(TAMAX), the maximum allowable die temperature(TJMAX) and the thermal resistance from junction-to-air(θJA). 0702-01 Taejin Technology Co.,Ltd. TABLE 2 LM1108F/SF HTC ...

Page 4

... In this example, the LM1108 dissipates a maximum of 260mW; below the allow able limit of 508 similar manner, Equation 2-1 and Equation 2-2 can be used to calculate maximum current and/or input voltage limits. For example, the maximum allowable VIN, is found by sustituting the maximum allowable power dissipation of 508 mW into Equation 2-1, from which VINMAX = 4.6V. 0702-01 Taejin Technology Co.,Ltd. 4 LM1108F/SF HTC ...

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