The LD29300 is a high current, high accuracy,
low-dropout voltageregulator series. T hes e
regulators feature 400mV dropout voltage and
very low ground current. Designed forhigh current
loads, these devices are also used in lower
current, ext remel y low dropout-critical systems,
where their tiny dropout voltage and ground
current val ues are important attributes. Typical
applications are in Power supp ly switching post
regulation, Series power supply for monitors,
Series power supplyforVCRs and TVs, Computer
Systems and Battery powered systems.
LD29300
SERIES
D2PAK
TO-220
D2PAK/A
P2PAK/A
P2PAK
SCHEMATIC DIAGRAM FOR ADJUSTABLE VERSION
1/17June 2003
Page 2
LD29300 SERIES
SCHEMATIC DIAGRAM FOR FIXED VERSION
* Only for version with inhibitfunction.
ORDERING CODES
TO-220
2
PAK (*)D2PAK/A (*)P2PAK (*)(#)P2PAK/A (*)
D
LD29300V15LD29300D2T15LD29300D2M15LD29300P2T15LD29300P2M151.5 V
LD29300V18LD29300D2T18LD29300D2M18LD29300P2T18LD29300P2M181.8 V
LD29300V25LD29300D2T25LD29300D2M25LD29300P2T25LD29300P2M252.5 V
LD29300V33LD29300D2T33LD29300D2M33LD29300P2T33LD29300P2M333.3 V
LD29300V50LD29300D2T50LD29300D2M50LD29300P2T50LD29300P2M505.0 V
LD29300V80LD29300D2T80LD29300D2M80LD29300P2T80LD29300P2M808.0 V
LD29300V90LD29300D2T90LD29300D2M90LD29300P2T90LD29300P2M909.0 V
LD29300P2TLD29300P2MADJ
(*) Available in Tape & Reel with the suffix "R".
(#) Available on request.
OUTPUT
VOLTAGE
ABSOLUTE MAXIMUM RATINGS
SymbolParameterValueUnit
V
I
P
T
T
(*) Above 14V the device is automaticallyin shut-down.
AbsoluteMaximumRatings are those beyond which damage to the device may occur. Functional operation under these condition is not implied.
Dropout VoltageIO= 500mA, TJ= -40 to 125°C (Note 2)0.1V
DROP
Quiescent CurrentIO= 1.5A,TJ= -40 to 125°C2050mA
I
q
Short Circuit CurrentVI-VO= 5.5V4.5A
I
sc
Control Input Logic LowOFF MODE, (NOTE 3) TJ= -40 to 125 °C0.8V
V
IL
Control Input Logic HighON MODE, (NOTE 3)TJ= -40 to 125 °C2V
V
IH
Control Input CurrentTJ= -40 to 125°C V
I
INH
eNO utput Noise VoltageB
NOTE 1: Guaranteed by design.
NOTE 2: Dropout voltageis defined asthe input-to-outputdifferential when the output voltage dropsto 99% of its nominal valuewith V
applied to VI.
NOTE 3: Only for version with Inhibit function.
Dropout VoltageIO= 500mA, TJ= -40 to 125°C (Note 2)0.1V
DROP
Quiescent CurrentIO= 1.5A,TJ= -40 to 125°C2050mA
I
q
I
Short Circuit CurrentVI-VO= 5.5V4.5A
sc
Control Input Logic LowOFF MODE, (NOTE 3) TJ= -40 to 125 °C0.8V
V
IL
Control Input Logic HighON MODE, (NOTE 3)TJ= -40 to 125 °C2V
V
IH
Control Input CurrentTJ= -40 to 125°C V
I
INH
eNO utput Noise VoltageB
NOTE 1: Guaranteed by design.
NOTE 2: Dropout voltageis defined asthe input-to-outputdifferential when the output voltage dropsto 99% of its nominal valuewith VO+1V
applied to V
NOTE 3: Only for version with Inhibit function.
Dropout VoltageIO= 500mA, TJ= -40 to 125°C (Note 2)0.1V
DROP
Quiescent CurrentIO= 1.5A,TJ= -40 to 125°C2050mA
I
q
Short Circuit CurrentVI-VO= 5.5V4.5A
I
sc
Control Input Logic LowOFF MODE, (NOTE 3) TJ= -40 to 125 °C0.8V
V
IL
Control Input Logic HighON MODE, (NOTE 3)TJ= -40 to 125 °C2V
V
IH
Control Input CurrentTJ= -40 to 125°C V
I
INH
eNO utput Noise VoltageB
NOTE 1: Guaranteed by design.
NOTE 2: Dropout voltageis defined asthe input-to-outputdifferential when the output voltage dropsto 99% of its nominal valuewith V
applied to VI.
NOTE 3: Only for version with Inhibit function.
Dropout VoltageIO= 500mA, TJ= -40 to 125°C (Note 2)0.1V
DROP
Quiescent CurrentIO= 1.5A,TJ= -40 to 125°C2050mA
I
q
I
Short Circuit CurrentVI-VO= 5.5V4.5A
sc
Control Input Logic LowOFF MODE, (NOTE 3) TJ= -40 to 125°C0.8V
V
IL
Control Input Logic HighON MODE, (NOTE 3)TJ= -40 to 125°C2V
V
IH
Control Input CurrentTJ= -40 to 125°C V
I
INH
eNOutput Noise VoltageB
NOTE 1: Guaranteed by design.
NOTE 2: Dropout voltageis defined asthe input-to-outputdifferential when the output voltage dropsto 99% of its nominal valuewith VO+1V
applied to V
NOTE 3: Only for version with Inhibit function.
Dropout VoltageIO= 500mA, TJ= -40 to 125°C (Note 2)0.1V
DROP
Quiescent CurrentIO= 1.5A,TJ= -40 to 125°C2050mA
I
q
Short Circuit CurrentVI-VO= 5.5V4.5A
I
sc
Control Input Logic LowOFF MODE, (NOTE 3) TJ= -40 to 125°C0.8V
V
IL
Control Input Logic HighON MODE, (NOTE 3)TJ= -40 to 125°C2V
V
IH
Control Input CurrentTJ= -40 to 125°C V
I
INH
eNOutput Noise VoltageB
NOTE 1: Guaranteed by design.
NOTE 2: Dropout voltageis defined asthe input-to-outputdifferential when the output voltage dropsto 99% of its nominal valuewith V
applied to VI.
NOTE 3: Only for version with Inhibit function.
Dropout VoltageIO= 500mA, TJ= -40 to 125°C (Note 2)0.1V
DROP
Quiescent CurrentIO= 1.5A,TJ= -40 to 125°C2050mA
I
q
I
Short Circuit CurrentVI-VO= 5.5V4.5A
sc
Control Input Logic LowOFF MODE, (NOTE 3) TJ= -40 to 125°C0.8V
V
IL
Control Input Logic HighON MODE, (NOTE 3)TJ= -40 to 125°C2V
V
IH
Control Input CurrentTJ= -40 to 125°C V
I
INH
eNOutput Noise VoltageB
NOTE 1: Guaranteed by design.
NOTE 2: Dropout voltageis defined asthe input-to-outputdifferential when the output voltage dropsto 99% of its nominal valuewith V
applied to VI.
NOTE 3: Only for version with Inhibit function.
Control Input Logic LowOFF MODE, (NOTE 3) TJ= -40 to 125°C0.8V
V
IL
Control Input Logic HighON MODE, (NOTE 3)TJ= -40 to 125°C2V
V
IH
Control Input CurrentTJ= -40 to 125°C V
I
INH
eNOutput Noise VoltageB
NOTE 1: Guaranteed by design.
NOTE 2: Reference Voltage is measured between output and GND pin, with ADJ PIN tied to V
NOTE 3: Only for version with Inhibit function.
=2V(Note3),CI= 330nF, CO=10µF adjust pin tied to output)
INH
IO= 10mA to 3A
T
= -40 to 125°C
J
2.5V
-1%1.23+1%V
T
= -40 to 125°C (Note 2)
J
= 3.23 ± 1V, IO= 1.5A
I
-2%+2%
6575dB
(Note 1)
= 3A,TJ= -40 to 125°C45100
I
O
= 13V ,V
V
I
= 10Hz to 100KHzIO= 100mA50µV
P
=GNDTJ= -40 to 125°C130180µA
INH
= 13V510µA
INH
.
OUT
RMS
7/17
Page 8
LD29300 SERIES
TYPICAL CHARAC TERISTICS
Figure1 : Output Voltage vs Temperature
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences of use o f suc h inf ormat ion n or f or an y infr ingeme nt of paten ts or oth er ri gh ts of third part ies whic h may resul t f rom
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
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