LD29080
800 mA fixed and adjustable output very low drop voltage regulator
Datasheet
-
production data
•
Fixed and adjustable output voltage (± 1 % at
25 °C)
•
Internal current and thermal limit
•
Logic controlled electronic shutdown
PPAK
DPAK
Description
The LD29080 is a medium current, high accuracy,
low-dropout voltage regulators series. These
regulators feature 400 mV dropout voltage and
very low ground current. Designed for medium
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 monitors,
series power supply for VCRs and TVs, computer
systems and battery powered systems.
SOT223
Features
•
Very low dropout voltage (typ. 0.4 at 800 mA)
•
Guaranteed output current up to 800 mA
Table 1. Device summary
Order codes
Output voltages
DPAK (tape and reel)
LD29080DT15R
LD29080DT18R
LD29080DT25R
LD29080DT33R
LD29080DT50R
LD29080DT90R
PPAK (tape and reel)
LD29080PT15R
LD29080PT18R
LD29080PT25R
LD29080PT33R
LD29080PT50R
LD29080PT90R
LD29080PTR
LD29080S33R
SOT223
1.5 V
1.8 V
2.5 V
3.3 V
5.0 V
9.0 V
ADJ
November 2013
This is information on a product in full production.
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Contents
LD29080
Contents
1
2
3
4
5
6
7
8
Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
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LD29080
Diagram
1
Diagram
Figure 1. Schematic diagram for adjustable version
Figure 2. Schematic diagram for fixed version
* Only for version with inhibit function.
DocID10918 Rev 8
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Pin configuration
LD29080
2
Pin configuration
Figure 3. Pin connections (top view)
5
4
GND
3
2
1
CS17230
3
GND
2
1
CS17240
GND
1
2
3
AM09358v1
PPAK
DPAK
SOT223
Table 2. Pin description
Symbol
V
I
GND
V
O
ADJ/N.C.
(1)
INHIBIT
(2)
1. Not connected for fixed version.
2. Not internally pulled up; in order to assure the operating condition (device in ON mode), it must be connected to a positive
voltage higher than 2 V.
PPAK
2
3
4
5
1
DPAK
1
2
3
SOT223
1
2
3
Figure 4. Application circuit
V
O
= V
REF
(1 + R
1
/R
2
)
* Only for version with inhibit function.
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LD29080
Maximum ratings
3
Maximum ratings
Table 3. Absolute maximum ratings
Symbol
V
I
V
INH
I
O
P
D
T
STG
T
OP
DC input voltage
Inhibit input voltage
Output current
Power dissipation
Storage temperature range
Operating temperature range
Parameter
Value
30
(1)
14
Internally limited
Internally limited
- 55 to 150
- 40 to 125
Unit
V
V
mA
mW
°C
°C
1.
Above 14 V the device is automatically in shut-down.
Note:
Absolute maximum ratings are those values beyond which damage to the device may occur.
Functional operation under these conditions is not implied.
Table 4. Thermal data
Symbol
R
thJC
R
thJA
Parameter
Thermal resistance junction-case
Thermal resistance junction-ambient
DPAK
8
100
PPAK
8
100
SOT223
25
110
Unit
°C/W
°C/W
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