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LM325ANSN/a124avaiVOLTAGE REGULATORS
LM326NNSN/a43avaiVOLTAGE REGULATORS
LM126HNSN/a10avaiVOLTAGE REGULATORS


LM325A ,VOLTAGE REGULATORSFeatures I i15V and i 12V tracking outputs I Output current to 100 mA I Output voltage balance ..
LM325H ,Dual Voltage RegulatorFeaturesn ±15V tracking outputsThis dual polarity tracking regulator is designed to providebalanced ..
LM3262TMX/NOPB ,6MHz, 800mA Miniature, Adjustable, Step-Down DC-DC Converter with Bypass 9-DSBGA -30 to 90Features 3 DescriptionThe LM3262 is a DC-DC converter optimized for1• Operates from a Single Li-Ion ..
LM326N ,VOLTAGE REGULATORSGeneral Description These are dual polarity tracking regulators designed to pro- vide balanced ..
LM329AH ,6.9V Precision Voltage ReferenceFeaturesvice to operate over a 0.5 mA to 15 mA range with virtuallyn 0.6 mA to 15 mA operating curr ..
LM329AH ,6.9V Precision Voltage ReferenceFeaturesvice to operate over a 0.5 mA to 15 mA range with virtuallyn 0.6 mA to 15 mA operating curr ..
LMC7111AIN ,Tiny CMOS Operational Amplifier with Rail-to-Rail Input and OutputElectrical Characteristics+ − +Unless otherwise specified, all limits guaranteed for T = 25˚C, V = ..
LMC7111BIM5 ,Tiny CMOS Operational Amplifier with Rail-to-Rail Input and OutputLMC7111 Tiny CMOS Operational Amplifier with Rail-to-Rail Input and OutputNovember 2003LMC7111Tiny ..
LMC7111BIM5X ,Tiny CMOS Operational Amplifier with Rail-to-Rail Input and OutputGeneral Descriptionn 50 kHz gain-bandwidth at 5VThe LMC7111 is a micropower CMOS operational amplif ..
LMC7111BIN ,Tiny CMOS Operational Amplifier with Rail-to-Rail Input and OutputApplicationsmost apparent in small portable electronic devices, such asn Mobile communicationsmobil ..
LMC7211AIM ,Tiny CMOS Comparator with Rail-to-Rail InputApplicationsdetector circuits, optical and magnetic sensors, and alarmand status circuits. n Batter ..
LMC7211AIM5 ,Tiny CMOS Comparator with Rail-to-Rail InputLMC7211 Tiny CMOS Comparator with Rail-to-Rail Input and Push-Pull OutputAugust 2002LMC7211Tiny CMO ..


LM126H-LM325A-LM326N
VOLTAGE REGULATORS
LM125/LM325/LM325A/LM126/LM326
giil/lttlii,fi),2it,ll,
' Semiconductor
LM125/LM325/LM325A, LM126/LM326 Voltage
Regulators
General Description
These are dual polarity tracking regulators designed to pro-
vide balanced positive and negative output voltages at cur-
rent up to 100 mA, the devices are set for i15V and 112V
outputs respectively. Input voltages up to 130V can be
used and there is provision for adjustable current limiting.
These devices are available in two package types to accom-
modate various power requirements and temperature
ranges.
Features
I: :15V and KI2V tracking outputs
n Output current to 100 mA
I: Output voltage balanced to within 1% (LM125, LM126,
LM325A)
Line and load regulation of 0.06%
Internal thermal overload protection
Standby current drain of 3 mA
Externally adjustable current limit
Internal current limit
Schematic and Connection Diagrams
Dual-in-Line Package
. -oCa) (ll
m m m l woos! 2 LY 2 +595!
1 L. 14'. " ac 2 2 'IIT'"
A " +V| A 2 ttt
"V i" :E M 5:935 -m " i m
A, _ m -oCO m
K , cr " wag 2 L“ 'lEretlwt
P’s n§__1 F cu m. :OCDM’ o-'., "tot
n ma ""'% " El oCi) (tol -mn 2 s. 4005!
I , ( an l,' "
T"' ' 'l', l "' TL/H/7776-2
1/11: . . ' © tttl Top View
L m} lr tsk c' m 4 m. Order Number LM325AN,
W ms i, on i' "k rt" LM325N or LM326N
d..] N ifll See NS Package Number N14A
<36) m
7.'.zmr
'si'iir,2, A Ci) m Metal Can Package
, Mt . , F " an
l; m . irgt "es
" ku {:s:
t l "1W " Case connected to -V.N TL/H/7776-3
Top View
Order Number LM125H,
LM325H, LM126H or LM326H
s-OD m See NS Package Number H100
Ill o,' fll
dt, a Ci) (s)
o CD u)
TL/ H/ 7776- 1
Absolute Maximum Ratings
If MllltaryIAerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Dlstrlbutors for avallablllty and specifications.
Operating Conditions
Operating Free Temperature Range
LM325, LM325A
- 55'C to +125''C
ty'C to + 70''C
(Note 5) Storage Temperature Range - 65''C to + 150°C t?,
Input Voltage l 30V Lead Temperature (Soldering, 10 sec.) 30ty'C F
Forced V0 + (Min) (Note 1) - 0.5V I
Forced vo- (Max) (Note 1) +o.5v :3
Power Dissipation (Note 2) PMAX g
Output Short-Circuit Duration (Note 3) Continuous P
Electrical Characteristics LM125/LM325/LM325A (Note 2) Q
Parameter Condltlons Min Typ Max Units g
Output Voltage Ti = 25''C t,',
LM125/LM325A 14.8 15 15.2 V
LM325 14.5 15 15.5 V
Input-Output Differential 2.0 V
Line Regulation " = 2y to 30V, IL = 20 mA, 2.0 10 mV
T1 = 25 C
Line Regulation Over Temperature Range " = 18V to 30V, IL = 20 mA, 2.0 20 mV
Load Regulation IL = o to 50 mA, " = A30V,
V0+ Ti = 25''C 3.0 10 mV
vo- 5.0 10 mV
Load Regulation Over Temperature Range IL = 0 to 50 mA, " = * 30V
V0+ 4.0 20 mV
Vo- 7.0 20 mV
OutputVoltage Balance Ti = 25''C
LM125, LM325A i 150 mV
LM325 , 300 mV
OutputVoltage Over Temperature Flange P S PMAX, 0 s to s; 50 mA,
LM125, LM325A 18V g html s 30 14.65 15.35 v
LM325 14.27 15.73 V
Temperature Stability of vo i 0.3 %
Short Circuit Current Limit T; = 25°C 260 mA 1
Output Noise Voltage T; = 25°C, BW = 100 - 10 kHz 150 erms ,
Positive Standby Current T; = 25°C 1.75 3.0 mA
Negative Standby Current Ti' = 25°C 3.1 5.0 mA
Long Term Stability 0.2 %/kHr
Thermal Resistance Junction to
Case (Note 4)
LM125H, LM325H 20 "C/W
Junction to Ambient (Still Air) 215 °C/W
Junction to Ambient (400 Lf/min Air Flow) 82 "C/W
Junction to Ambient (Still Air) tt
LM325AN, LM325N 90 C/W
Note 1: That voltage to which the output may be forced without damage to the device.
Note 2: Unless otherwise specified these specifications apply for Ti = 55''C to +150'C on LM125, Ti = 0°C to + 125''C on LM325A, Tj = (Y'C to +125''C on
LM325, ViN = i20V, k. = 0 mA, ‘MAX == 100 mA, [MAX = 2.0W tor the H10 Package. 'MAX = 100 mA. IMAX = 100 mA, PMAX = 1.0W for the DIP N Package.
Note 3.. If the junction temperature exceeds 150°C, the output short circuit duration is 60 seconds.
Note 4: Without a heat sink, the thermal resistance junction to ambient ot the H10 Package is about 155'C/W. With a heat sink, the effective thermal resistance
can only approach the junction to case values specified, depending on the efficiency of the sink.
Note 5: Refer to RETS125X drawing tor military specification of LM125.
LM125/LM325/LM325A/LM126/LM326
Absolute Maximum Ratings
If Mllltary/Aerospace apeemed devlces are required,
please contact the National Semiconductor Sales
Operating Conditions
Operating Free Temperature Range
-55''C to + 125°C
OfmtttfDlstrhutttrB for avallablllty and ttpetMttatlttrta. LM326 WC to + 70'C
(Note 5) Storage Temperature Range -65''C to + 15ty'C
Input Voltage 1 30V Lead Temperature (Soldering, 10 sec.) 300°C
Forced Vo+ (Min) (Note 1) -0.5V
Forced vo- (Max) (Note 1) + 0.5V
Power Dissipation (Note 2) Internally Limited
Output Short-Circuit Duration (Note 3) Continuous
Electrical Characteristics LM126/LM326 (Note 2)
Parameter Conditions Min Typ Max Unlta
Output Voltage T] = 25'C
LM126/LM326 11,8 12 12.2 V
11.5 12.5 V
Input-Output Differential 2.0 V
Line Regulation VIN = 15V to 30V
IL = 20 mA, T1 = 25''C 2.0 10 mV
Line Regulation Over Temperature Range VIN = 15V to 30V, Ir. '= 20 mA 2.0 20 mV
Load Regulation IL --- 0 to 50 mA, VIN = iSOV.
Vo+ T; = 25'C 3.0 10 mV
vo- 5.0 10 mV
Load Regulation Over Temperature Range IL = 0 to 50 mA, VIN == i 30V
vo+ 4.0 20 mV
Vo - 7.0 20 mV
OutputVoltage Balance T‘ == 25°C
LM126, LM326 i 125 mV
i 250 mV
Output Voltage Over Temperature Range P s PMAX, 0 s; lo S tit) mA,
LM126 15V 5 MNl s 30 11.68 12.32 v
LM326 11.32 12.68 V
Temperature Stability of V0 A 0.3 %
Short Circuit Current Limit T1 = 25''C 260 mA
Output Noise Voltage T1 = 25''C, BW = 100 - 10 kHz 100 erms
Positive Standby Current T1 = 25°C, IL = 0 1.75 3.0 mA
Negative Standby Current T] = 25'C, It. = 0 3.1 5.0 mA
Long Term Stability 0.2 %/kHr
Thermal Resistance Junction to
Case (Note 4)
LM126H, LM326H 20 'C/W
Junction to Ambient (Still Air) 155 'C/W
Junction to Ambient (400 Lf/min Air Flow) 62 'C/IN
Junction to Ambient LM326N 150 "C/W
Note 1: That voltage to which the output may be forced without damage to the device.
Note 2: Unless otherwise specified these ipmlMatiorts applyfor T, --= 55'C to +150‘C on LM126, T1 = we to +125'C on LM326, VlN '* izov,1._ -- 0 mA, IMAX
= 100 mA, PMAX = 2.0W for the H10 Package, IMAX = 100 mA, IMAX = 100 mA, PMAx " 1.0W for the DIP N Package.
Note 3: If the Junction temperature exceeds 1500. the output short circuit duration is 60 seconds.
Note &Withouta heat sink, the thermal resistance Junction to ambient of the H10 Package ls about 155'C/W. With a heat sink, the eftettthm thermal resistance
can only approach the junction to case values specified, depending on the efficiency of the sink.
Note 5: Refer to RETS126X drawing for military specification of LM126.
Typical Performance Characteristics
GUI?!" VDlYAGE DEVIAUION luv}
MINIMUM "IN" 091?!" mFFEREIflIAl (VI
INPUY CURRENY lull)
LM 125 Load Regulation
" to: m;
I o NEG am
OISO‘C
--- T,-
-.. T, x -55.:
" ----- fl-qs-c
ll ttl " so In
LOAD CURRENT (IIIA)
LM125/ 126 Regulator
Dropout Voltage for
Negative Regulator
T, =15?
/’ r, = 1V
T, . -ss'c
0 " " so "
LOAD CURRENT (mA)
LM325/326 Maximum Average
Power Dissipation "
Ambient Temperature
INFINITE MEAT SINK
, POWER ' E
" AT SINK
vowm MEKAG
" REA! SIM
" AND H10
D " 50 " mo
T. - AMBIENT TEMPERATURE CC)
LM125/ 126
Standby Current Drain
ta ' -55"; - SONY
" 1, = 'tsn;
1. ' nzs'c
" ' SUPPLY
1. ' - t
r. ' 'tpt
1. = nzs'c
ll " " " " " "
IN'UT VOLTAGE KW
00"!" CURRENT ImA) OUI'UT VOLIAGE DEVIATIOI (NV)
EURREIY llllT SENSE VOIIAEE (V)
OUTPUT VOIJAGE DEVIATION {mVl
LM126 Load Regulation
10 " " 80 tot)
L050 CURRENT (MAI
LM125/126 Peak Output
Current "
Junction Temperature
I I T r
AVogtsomv
FOSHWE
's2ts,'i?'ll,'lrt,m
NEGANVE
REGULATOR
4:0 0 50 Ill] 150
JUNEYIDN TEMPERATURE ('CD
LM125/126 Current Limit Sense
Voltage " Temperature
tor Negative Regulator
410-25 ' " M " 100125150
JUNCTION TEMPERAYURE I'D
Load Transient Response
for Negative Regulator
LIL-U-IDMA
TIME (m:nlv:
MINIMUM "IN" 001"" DIFFEREIIIAL IV)
PD IW)
CURREI" UM" SENSE VOUAGE (V)
UUH’UI VOlTAGt DEVMIIUN (MW
-55 ~25 0
-SD -15
LM 125/ 1 26 Regulator
Dropout Voltage for
Pttttltige Regulator
1‘: onso'é
--"" ‘IS'C
,,,w'''
n to so no
LOAD CURRENT [mill
LM125/126 Maximum Average
Power Dlsslpatlon "
Ambient Temperature
INFI IT
" SINK
" HEAT SINK
-25 ~50 ‘75 non *125
" - AMBIENY TEMPERATURE ('C)
LM125/ 126 Current Llmlt Sense
Voltage vs Temperature
for Positive Regulator
tt " M " IN!!! tho
JUNCTION YEM'ERATURE ('Cl
Load Transient Response
ch . - m mi
NEGAYIVE REBUlATOR
TIME 'lur’OlVr
TL/H/7776-4
QZSW‘I/QZLW'l/V938W'IISZSW'IISZI-W'l
LM125/LM325/LM325A/LM126/LM326
Typical Performance Characteristics (Continued)
[IIITPUT VOLTAGE DEVIATIOI (1N) OUTFIT! VOIJAGE DEVIAYIOI (IIIVI
I'll? RIPPL! ANEIUAI'IOI (“l
LM 1 25
Load Transient Response
for Positive mrgulator
I l I I I
ULIC-‘IIIA
THE (lplOlV)
Line Transient Response
AV... . om to oilv
IL I " IIIA
POSITIVE nmoumn‘
me (INDIVD
Rlpple Rejection
l; I IIIA
"tNT RM! I " tte.,
" I 225V
REGULATOR
REGULAYOR
* "k IN "" IM
FREQUENEV (m)
001'?!” VOLYAGE DEVIAYIOI (IV) OUTNI‘I' VOI‘I’AGE DEVIATIDM (IIV)
OUTPUT MDANCE IONMSI
001'")! MBA“! (UNIS!
LM 126
Load Transient Response
.40 -r , l I T I I
AIt . II - II M
vosmv: amuumn
nu: Izu/mw
Llne Transient Response
for Negatlve Regulator
"t' , T l l I T T T
AV" . -t8lt ro ~23v
It I " "
ottrt1
TIME nulmvl
Output Impedance
" Frequency
GATIVE
nuLAIon
m m m wot 1M
rnmutucv om
Output Impedance
" Frequency
-__cl-m
NEGATIVE
REGULATOR
POSITIVE
" 6 ll lATD R
IM I 0! 10k TOOK 1.”!
FREOUENCV (Nil
OUTPUT VOLTAGE DEVIATIDI anl
OUTPUY VOLTAGE DEVIAIIDN {MW
IUUY RWtE IITINUAYIOI Ill)
Llna Transient Response
for Positive Regulator
"" v , . , ' T-T-T"
AV... . 98V " "w
‘13 L "M
TIME IMDIVI
Llne Transient Rosponu
t r T T . ' ' , .
' 50 Av... . 49 to -tlv
Is I " III
'ttil ummv: nscuumu
nus (liplDlV)
Ripple Reluctlon
m " -+zsv
" mm! mm: . I. v. .
" - g. . ttf
Ion L '
IOU lot m 1"! I.”
FREQUENCY (Hr)
TL/H/7776- 5
Typical Applications
Basic Reguiatorttt
TL/H/7776-6
2.0 Amp Boosted Regulator With Current lelt
OR EOUIV. '
2N3055
0R EOUIV.
' Vm - VIN
TL/H/7776-7
Note: Metal can (H) packages shown.
_ Current Limit Sense Voltage (See Curve)
tSolid tantalum
ttShort pins 6 and 7 on dip
tttRCL can be added to the basic regulator between pins 6 and 5, 1 and 2 to reduce
current limit.
'Requived if regulator is located an appreciable distance from power supply filter.
"Although no capacitor is needed for stability, it does help transient response. (If
needed use 1 " electrolytic).
"‘Although no capacitor is needed for stability, it does help transient response. (If
needed use 10 pF electrolytic).
SZSW'l/QZl-WTIVSZSW'I/SZEW'l/SZI-W'l
LM125/LM325/LM325A/LM126/LM326
Typical Applications (Continued)
Positive Current Dependent Simultaneous Current Llmlting
VSENSE NEG
I + = 2 BEQ1
CL R1 Rcc+ == VSENSE+
+ _ VSENSE NEG + VDIODE 1.1 ICL+
ICL - 'i,"''-----'-
kx+ Controls Both Sides of the Regulator.
Boosted Regulator With Foldback Current Llmlt
-iti:S',"m"
I ‘qu - NM
Positive Reg.
IMAX = 2.0A
Isc+ = 750 mA
© TA = 25°C
+V|N _ +25V
I Negative Reg.
I = 2.0A
tit 0 MAX
our 150 = 750 mA
' © TA = 25''C
tta -cz' -Vm = -25v
‘Vm -em -
TL/H/7776-9
TL/H/7776-8
Resistor Values
125 126
R1 18 20
R2 31 o 180
R3 2.4K 1.35k
R6 300 290
FICL 0.7 0.9
Typical Applications (Continued)
Electric Shutdown
man 200
mm zums
L-""''"
V... 2 LN
" f "It
v ""-=o-vou,
TL/H/7778-10
tSolid tantalum
ttShort pins 8 and 7 on dlp
’Requlred Ii regulator is located an appreciable distance from power supply flltttr,
"Although no capacitor la needed for stablllty. It does help tranelem response. (If
needed use 1 pF electrolytic).
SZSW'I/QZIW'I/VSZSW'l/SZSW'l/SZLW'I
This datasheet has been :
www.ic-phoenix.com
Datasheets for electronic components.
National Semiconductor was acquired by Texas Instruments.
corp/docs/irwestor_relations/Pr_09_23_201 1_national_semiconductor.html
This file is the datasheet for the following electronic components:
LM125H - product/Im125h?HQS=TI-nu|I-null-dscataIog-df-pf-null-wwe
LM126 - product/Im126?HQS=T|-null-null-dscatalog-df—pf—nuII-wwe
LM126H - product/Im126h?HQS=T|—null-null-dscataIog-df-pf-null-wwe
LM125AN - product/Im125an?HQS=T|—null-null-dscatalog—df—pf—nuII-wwe
LM325A - product/lm325a?HQS=T|-nu|l-null-dscatalog-df-pf—nuII-wwe
LM326 - product/Im326?HQS=T|-null-null-dscatalog-df—pf—nuII-wwe
LM326H - product/Im326h?HQS=T|—null-null-dscataIog-df-pf-null-wwe
LM326N - product/Im326n?HQS=TI-nu|I-null-dscatalog-df—pf—nuII-wwe
LM325A - product/lm325a?HQS=T|-nu|l-null-dscataIog-df-pf-null-wwe
LM326 - product/Im326?HQS=T|-null-null-dscatalog-df—pf—nuII-wwe
LM326H - product/Im326h?HQS=T|—null-null-dscataIog-df-pf-null-wwe
LM326N - product/Im326n?HQS=TI-nu|I-null-dscatalog-df—pf—nuII-wwe
LM325A - product/lm325a?HQS=T|-nu|l-null-dscataIog-df-pf-null-wwe
LM126H - product/Im126h?HQS=T|—null-null-dscataIog-df-pf-null-wwe
LM126 - product/Im126?HQS=T|-null-null-dscatalog—df—pf—nuII-wwe
LM125H - product/Im125h?HQS=TI-nu|I-null-dscatalog-df—pf—nuII-wwe
LM125AN - product/Im125an?HQS=T|-null-nulI-dscatalog-df—pf—nuII-wwe
LM125 - product/Im125?HQS=T|-nul|-null-dscatalog-df—pf—nuII-wwe
LM326N - product/Im326n?HQS=TI-nu|I-null-dscatalog-df—pf—nuII-wwe
LM125 - product/Im125?HQS=T|-nulI-nuIl-dscatalog-df—pf-nuII-wwe
LM326 - product/Im326?HQS=T|-null-null-dscatalog-df—pf—nuII-wwe
LM326H - product/Im326h?HQS=T|—nu|l-null-dscataIog-df-pf-null-wwe
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