LD29150
SERIES
1.5A, VERY LOW DROP VOLTAGE REGULATORS
s
s
s
s
s
VERY LOW DROPOUT VOLTAGE (TYP. 0.4
AT 1.5A)
GUARANTEED OUTPUT CURRENT UP TO
1.5A
FIXED AND ADJUSTABLE OUTPUT
VOLTAGE (±1% AT 25°C)
INTERNAL CURRENT AND THERMAL LIMIT
LOGIC CONTROLLED ELECTRONIC
SHUTDOWN AVAILABLE IN PPAK
TO-220
TO-220FP
DESCRIPTION
The LD29150 is a high current, high accuracy,
low-dropout voltage regulator series. These
regulators feature 400mV dropout voltage and
very low ground current. Designed for high current
loads, these devices are also used in lower
current, extremely low dropout-critical systems,
where their tiny dropout voltage and ground
current values are important attributes. Typical
applications are in Power supply switching post
regulation, Series power supply for monitors,
Series power supply for VCRs and TVs, Computer
Systems and Battery powered systems.
SCHEMATIC DIAGRAM FOR ADJUSTABLE VERSION
PPAK
DPAK
June 2003
1/16
LD29150 SERIES
SCHEMATIC DIAGRAM FOR FIXED VERSION
* Only for version with inhibit function.
ORDERING CODES
TO-220
LD29150V15
LD29150V18
LD29150V25
LD29150V33
LD29150V50
LD29150V80
LD29150V90
TO-220FP (#)
LD29150P15
LD29150P18
LD29150P25
LD29150P33
LD29150P50
LD29150P80
LD29150P90
DPAK (*)
LD29150DT15
LD29150DT18
LD29150DT25
LD29150DT33
LD29150DT50
LD29150DT80
LD29150DT90
PPAK (*)
LD29150PT15
LD29150PT18
LD29150PT25
LD29150PT33
LD29150PT50
LD29150PT80
LD29150PT90
LD29150PT
OUTPUT
VOLTAGE
1.5 V
1.8 V
2.5 V
3.3 V
5.0 V
8.0 V
9.0 V
ADJ
(*) Available in Tape & Reel with the suffix "R".
(#) Available on request.
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
Parameter
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.
2/16
LD29150 SERIES
THERMAL DATA
Symbol
R
thj-case
R
thj-amb
Parameter
Thermal Resistance Junction-case
Thermal Resistance Junction-ambient
DPAK
8
100
PPAK
8
100
TO-220
3
50
TO-220FP
4
60
Unit
°C/W
°C/W
CONNECTION DIAGRAM
(top view)
TO-220
TO-220FP
PPAK
* Not connected for fixed version.
DPAK
APPLICATION CIRCUIT
R
1
V
O
= V
REF
(1 +
)
R
2
* Only for version with inhibit function.
3/16
LD29150 SERIES
ELECTRICAL CHARACTERISTICS OF LD29150#15
(I
O
= 10mA, T
J
= 25°C, V
I
= 3.5V, V
INH
= 2V (Note 2), C
I
= 330nF, C
O
= 10µF, unless otherwise specified)
Symbol
V
I
V
O
∆V
O
∆V
O
SVR
I
q
Parameter
Minimum Operating Input
Voltage
Output Voltage
Load Regulation
Line Regulation
Supply Voltage Rejection
Quiescent Current
Test Conditions
I
O
= 10mA to 1.5A
T
J
= -40 to 125°C
I
O
= 10mA to 1.5A, V
I
= 3 to 7V
T
J
= -40 to 125°C
I
O
= 10mA to 1.5A
V
I
= 3 to 13V
f = 120 Hz, V
I
= 3.5
±
1V, I
O
= 0.75A
(Note 1)
I
O
= 0.75A, T
J
= -40 to 125°C
T
J
= -40 to 125°C
I
O
= 1.5A,
V
I
= 13V, V
INH
= GND
I
sc
V
IL
V
IH
I
INH
eN
Short Circuit Current
Control Input Logic Low
Control Input Logic High
Control Input Current
Output Noise Voltage
V
I
- V
O
= 5.5V
OFF MODE, (NOTE 2)
ON MODE, (NOTE 2)
T
J
= -40 to 125°C
B
P
= 10Hz to 100KHz
T
J
= -40 to 125°C
T
J
= -40 to 125°C
I
O
= 100mA
2
5
60
10
T
J
= -40 to 125°C
65
Min.
2.5
1.485
1.47
1.5
0.2
0.06
75
15
30
130
2.2
0.8
40
80
180
µA
A
V
V
µA
µV
RMS
1.515
1.53
1.0
0.5
Typ.
Max.
Unit
V
V
%
%
dB
mA
V
INH
= 13V
NOTE 1: Guaranteed by design.
NOTE 2: Only for version with Inhibit function.
ELECTRICAL CHARACTERISTICS OF LD29150#18
(I
O
= 10mA, T
J
= 25°C, V
I
= 3.8V, V
INH
= 2V (Note 3), C
I
= 330nF, C
O
= 10µF, unless otherwise specified)
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 1.5A, V
I
= 3 to 7.3V
T
J
= -40 to 125°C
I
O
= 10mA to 1.5A
V
I
= 3 to 13V
f = 120 Hz, V
I
= 3.8
±
1V, I
O
= 0.75A
(Note 1)
I
O
= 250mA, T
J
= -40 to 125°C (Note 2)
I
O
= 0.75A,
I
O
= 1.5A,
I
q
Quiescent Current
I
O
= 0.75A,
I
O
= 1.5A,
I
sc
V
IL
V
IH
I
INH
eN
Short Circuit Current
Control Input Logic Low
Control Input Logic High
Control Input Current
Output Noise Voltage
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
T
J
= -40 to 125°C
T
J
= -40 to 125°C
T
J
= -40 to 125°C
I
O
= 100mA
2
5
72
10
62
Min.
1.782
1.764
Typ.
1.8
0.2
0.06
72
0.1
0.2
0.4
15
30
130
2.2
0.8
0.7
40
80
180
µA
A
V
V
µA
µV
RMS
mA
Max.
1.818
1.836
1.0
0.5
Unit
V
%
%
dB
V
V
I
= 13V, V
INH
= GND
V
I
- V
O
= 5.5V
OFF MODE, (NOTE 3)
ON MODE, (NOTE 3)
T
J
= -40 to 125°C
B
P
= 10Hz to 100KHz
V
INH
= 13V
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
.
NOTE 3: Only for version with Inhibit function.
4/16
LD29150 SERIES
ELECTRICAL CHARACTERISTICS OF LD29150#25
(I
O
= 10mA, T
J
= 25°C, V
I
= 4.5V, V
INH
= 2V (Note 3), C
I
= 330nF, C
O
= 10µF, unless otherwise specified)
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 1.5A, V
I
= 3.5 to 8V
T
J
= -40 to 125°C
I
O
= 10mA to 1.5A
V
I
= 3.5 to 13V
f = 120 Hz, V
I
= 4.5
±
1V, I
O
= 0.75A
(Note 1)
I
O
= 250mA, T
J
= -40 to 125°C (Note 2)
I
O
= 0.75A,
I
O
= 1.5A,
I
q
Quiescent Current
I
O
= 0.75A,
I
O
= 1.5A,
I
sc
V
IL
V
IH
I
INH
eN
Short Circuit Current
Control Input Logic Low
Control Input Logic High
Control Input Current
Output Noise Voltage
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
T
J
= -40 to 125°C
T
J
= -40 to 125°C
T
J
= -40 to 125°C
I
O
= 100mA
2
5
100
10
55
Min.
2.475
2.45
Typ.
2.5
0.2
0.06
70
0.1
0.2
0.4
15
30
130
2.2
0.8
0.7
40
80
180
µA
A
V
V
µA
µV
RMS
mA
Max.
2.525
2.55
1.0
0.5
Unit
V
%
%
dB
V
V
I
= 13V, V
INH
= GND
V
I
- V
O
= 5.5V
OFF MODE, (NOTE 3)
ON MODE, (NOTE 3)
T
J
= -40 to 125°C
B
P
= 10Hz to 100KHz
V
INH
= 13V
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
.
NOTE 3: Only for version with Inhibit function.
ELECTRICAL CHARACTERISTICS OF LD29150#33
(I
O
= 10mA, T
J
= 25°C, V
I
= 5.3V, V
INH
= 2V (Note 3), C
I
= 330nF, C
O
= 10µF, unless otherwise specified)
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 1.5A, V
I
= 4.3 to 8.8V
T
J
= -40 to 125°C
I
O
= 10mA to 1.5A
V
I
= 4.3 to 13V
f = 120 Hz, V
I
= 5.3
±
1V, I
O
= 0.75A
(Note 1)
I
O
= 250mA, T
J
= -40 to 125°C (Note 2)
I
O
= 0.75A,
I
O
= 1.5A,
I
q
Quiescent Current
I
O
= 0.75A,
I
O
= 1.5A,
I
sc
V
IL
V
IH
I
INH
eN
Short Circuit Current
Control Input Logic Low
Control Input Logic High
Control Input Current
Output Noise Voltage
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
T
J
= -40 to 125°C
T
J
= -40 to 125°C
T
J
= -40 to 125°C
I
O
= 100mA
2
5
132
10
52
Min.
3.267
3.234
Typ.
3.3
0.2
0.06
67
0.1
0.2
0.4
15
30
130
2.2
0.8
0.7
40
80
180
µA
A
V
V
µA
µV
RMS
mA
Max.
3.333
3.366
1.0
0.5
Unit
V
%
%
dB
V
V
I
= 13V, V
INH
= GND
V
I
- V
O
= 5.5V
OFF MODE, (NOTE 3)
ON MODE, (NOTE 3)
T
J
= -40 to 125°C
B
P
= 10Hz to 100KHz
V
INH
= 13V
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
.
NOTE 3: Only for version with Inhibit function.
5/16
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