LD29300
SERIES
3A, VERY LOW DROP VOLTAGE REGULATOR
s
s
s
s
VERY LOW DROPOUT VOLTAGE (TYP. 0.4
AT 3A)
GUARANTEED OUTPUT CURRENT UP TO
3A
FIXED VOLTAGE WITH
±1%
TOLERANCE
AT 25°C
INTERNAL CURRENT AND THERMAL LIMIT
TO-220
D
2
PAK
DESCRIPTION
The LD29300 is a high current, high accuracy,
low-dropout voltage regulators series. These
regulators feature 400mV dropout voltages and
very low ground current. Designed for high current
loads, these devices also find applications in lower
current, extremely low dropout-critical systems,
where their tiny dropout voltage and ground
current values are important attributes. Typical
application are in Power supply switching post
regulation, Series power supply for monitor,
Series power supply for VCRs and TVs, Computer
Systems and Battery powered systems.
D
2
PAK/A
P
2
PAK/A
P
2
PAK
SCHEMATIC DIAGRAM
May 2003
1/17
LD29300 SERIES
ORDERING CODES
TO-220
LD29300V15
LD29300V18
LD29300V25
LD29300V33
LD29300V50
LD29300V80
LD29300V90
D
2
PAK (*)
LD29300D2T15
LD29300D2T18
LD29300D2T25
LD29300D2T33
LD29300D2T50
LD29300D2T80
LD29300D2T90
D
2
PAK/A (*)
LD29300D2M15
LD29300D2M18
LD29300D2M25
LD29300D2M33
LD29300D2M50
LD29300D2M80
LD29300D2M90
LD29300AP2T
#
(*) Available in Tape & Reel with the suffix "R".
# Available on request.
P
2
PAK (*)
P
2
PAK/A (*)
OUTPUT
VOLTAGE
1.5 V
1.8 V
2.5 V
3.3 V
5.0 V
8.0 V
9.0 V
ADJ
LD29300AP2M
ABSOLUTE MAXIMUM RATINGS
Symbol
V
I
I
O
P
D
T
stg
T
op
DC Input Voltage
Output Current
Power Dissipation
Storage Temperature Range
Operating Junction Temperature Range
Parameter²
Value
30 (*)
Internally Limited
Internally Limited
-55 to 150
-40 to 125
Unit
V
mA
mW
°C
°C
(*) Above 14V the device is automatically in shut-down.
Absolute Maximum Ratings are those beyond which damage to the device may occur. Functional operation under these condition is not im-
plied.
THERMAL DATA
Symbol
R
thj-case
R
thj-amb
Parameter
Thermal Resistance Junction-case
Thermal Resistance Junction-ambient
TO-220
3
50
D
2
PAK-P
2
PAK
D
2
PAK/A-P
2
PAK/A
3
60
Unit
°C/W
°C/W
2/17
LD29300 SERIES
ELECTRICAL CHARACTERISTICS OF LD29300#15
(I
O
= 10mA, T
J
= 25°C, V
I
= 3.5V, C
I
= 330nF, C
O
= 10µF)
Symbol
V
I
V
O
∆V
O
∆V
O
SVR
I
q
I
sc
eN
Parameter
Minimum Operating Input
Voltage
Output Voltage
Load Regulation
Line Regulation
Supply Voltage Rejection
Quiescent Current
Short Circuit Current
Output Noise Voltage
Test Conditions
I
O
= 10mA to 3A
T
J
= -40 to 125°C
I
O
= 10mA to 3A, V
I
= 3 to 7V
T
J
= -40 to 125°C
I
O
= 10mA to 3A
V
I
= 3 to 13V
f = 120 Hz, V
I
= 3.5
±
1V, I
O
= 1.5A
(Note 1)
I
O
= 1.5A,
T
J
= -40 to 125°C
T
J
= -40 to 125°C
I
O
= 3A,
R
L
= 0
B
P
= 10Hz to 100KHzI
O
= 100mA
65
Min.
2.5
1.485
1.47
1.5
0.2
0.06
75
20
45
4.5
60
50
100
A
µV
RMS
1.515
1.53
1.0
0.5
Typ.
Max.
Unit
V
V
%
%
dB
mA
NOTE 1: Guaranteed by design.
ELECTRICAL CHARACTERISTICS OF LD29300#18
(I
O
= 10mA, T
J
= 25°C, V
I
= 3.8V, C
I
= 330nF, C
O
= 10µF)
Symbol
V
O
∆V
O
∆V
O
SVR
V
DROP
Parameter
Output Voltage
Load Regulation
Line Regulation
Supply Voltage Rejection
Dropout Voltage
Test Conditions
I
O
= 10mA to 3A, V
I
= 3 to 7.3V
T
J
= -40 to 125°C
I
O
= 10mA to 3A
V
I
= 3 to 13V
f = 120 Hz, V
I
= 3.8
±
1V, I
O
= 1.5A
(Note 1)
I
O
= 500mA, T
J
= -40 to 125°C (Note 2)
I
O
= 1.5A,
I
O
= 3A,
I
q
I
sc
eN
Quiescent Current
Short Circuit Current
Output Noise Voltage
I
O
= 1.5A,
I
O
= 3A,
R
L
= 0
B
P
= 10Hz to 100KHzI
O
= 100mA
T
J
= -40 to 125°C (Note 2)
T
J
= -40 to 125°C (Note 2)
T
J
= -40 to 125°C
T
J
= -40 to 125°C
62
Min.
1.782
1.764
Typ.
1.8
0.2
0.06
72
0.1
0.2
0.4
20
45
4.5
60
0.7
50
100
A
µV
RMS
mA
Max.
1.818
1.836
1.0
0.5
Unit
V
%
%
dB
V
NOTE 1: Guaranteed by design.
NOTE 2: Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value with V
O
+1V
applied to V
I
.
4/17
LD29300 SERIES
ELECTRICAL CHARACTERISTICS OF LD29300#25
(I
O
= 10mA, T
J
= 25°C, V
I
= 4.5V, C
I
= 330nF, C
O
= 10µF)
Symbol
V
O
∆V
O
∆V
O
SVR
V
DROP
Parameter
Output Voltage
Load Regulation
Line Regulation
Supply Voltage Rejection
Dropout Voltage
Test Conditions
I
O
= 10mA to 3A, V
I
= 3.5 to 8V
T
J
= -40 to 125°C
I
O
= 10mA to 3A
V
I
= 3.5 to 13V
f = 120 Hz, V
I
= 4.5
±
1V, I
O
= 1.5A
(Note 1)
I
O
= 500mA, T
J
= -40 to 125°C (Note 2)
I
O
= 1.5A,
I
O
= 3A,
I
q
I
sc
eN
Quiescent Current
Short Circuit Current
Output Noise Voltage
I
O
= 1.5A,
I
O
= 3A,
R
L
= 0
B
P
= 10Hz to 100KHzI
O
= 100mA
T
J
= -40 to 125°C (Note 2)
T
J
= -40 to 125°C (Note 2)
T
J
= -40 to 125°C
T
J
= -40 to 125°C
55
Min.
2.475
2.45
Typ.
2.5
0.2
0.06
70
0.1
0.2
0.4
20
45
4.5
100
0.7
50
100
A
µV
RMS
mA
Max.
2.525
2.55
1.0
0.5
Unit
V
%
%
dB
V
NOTE 1: Guaranteed by design.
NOTE 2: Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value with V
O
+1V
applied to V
I
.
ELECTRICAL CHARACTERISTICS OF LD29300#33
(I
O
= 10mA, T
J
= 25°C, V
I
= 5.3V, C
I
= 330nF, C
O
= 10µF)
Symbol
V
O
∆V
O
∆V
O
SVR
V
DROP
Parameter
Output Voltage
Load Regulation
Line Regulation
Supply Voltage Rejection
Dropout Voltage
Test Conditions
I
O
= 10mA to 3A, V
I
= 4.3 to 8.8V
T
J
= -40 to 125°C
I
O
= 10mA to 3A
V
I
= 4.3 to 13V
f = 120 Hz, V
I
= 5.3
±
1V, I
O
= 1.5A
(Note 1)
I
O
= 500mA, T
J
= -40 to 125°C (Note 2)
I
O
= 1.5A,
I
O
= 3A,
I
q
I
sc
eN
Quiescent Current
Short Circuit Current
Output Noise Voltage
I
O
= 1.5A,
I
O
= 3A,
R
L
= 0
B
P
= 10Hz to 100KHzI
O
= 100mA
T
J
= -40 to 125°C (Note 2)
T
J
= -40 to 125°C (Note 2)
T
J
= -40 to 125°C
T
J
= -40 to 125°C
52
Min.
3.267
3.234
Typ.
3.3
0.2
0.06
67
0.1
0.2
0.4
20
45
4.5
132
0.7
50
100
A
µV
RMS
mA
Max.
3.333
3.366
1.0
0.5
Unit
V
%
%
dB
V
NOTE 1: Guaranteed by design.
NOTE 2: Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value with V
O
+1V
applied to V
I
.
5/17
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