LT1529IQ-5#TRPBF Linear Technology, LT1529IQ-5#TRPBF Datasheet - Page 3

IC LDO W/SHTDWN 5V 3A DDPAK-5

LT1529IQ-5#TRPBF

Manufacturer Part Number
LT1529IQ-5#TRPBF
Description
IC LDO W/SHTDWN 5V 3A DDPAK-5
Manufacturer
Linear Technology
Datasheet

Specifications of LT1529IQ-5#TRPBF

Regulator Topology
Positive Fixed
Voltage - Output
5V
Voltage - Input
Up to 15V
Voltage - Dropout (typical)
0.6V @ 3A
Number Of Regulators
1
Current - Output
3A
Current - Limit (min)
3.2A
Operating Temperature
-45°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
TO-263-5, D²Pak (5 leads + Tab), TO-263BA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
ELECTRICAL C
The
PARAMETER
Dropout Voltage
(Note 6)
GND Pin Current
(Note 7)
ADJ Pin Bias Current (Notes 5, 9)
Shutdown Threshold
SHDN Pin Current (Note 10)
Quiescent Current in Shutdown
(Note 11)
Ripple Rejection
Current Limit
Input Reverse Leakage Current
Reverse Output Current (Note 12)
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The SHDN pin input voltage rating is required for a low impedance
source. Internal protection devices connected to the SHDN pin will turn on
and clamp the pin to approximately 7V or – 0.6V. This range allows the use
of 5V logic devices to drive the pin directly. For high impedance sources or
logic running on supply voltages greater than 5.5V, the maximum current
driven into the SHDN pin must be limited to less than 5mA.
Note 3: The device is tested under pulse load conditions such that T
Note 4: Operating conditions are limited by maximum junction
temperature. The regulated output voltage specification will not apply for
all possible combinations of input voltage and output current. When
operating at maximum input voltage, the output current range must be
limited. When operating at maximum output current the input voltage
range must be limited.
Note 5: The LT1529 is tested and specified with the ADJ pin connected to
the OUTPUT pin.
Note 6: Dropout voltage is the minimum input/output voltage required to
maintain regulation at the specified output current. In dropout the output
voltage will be equal to (V
denotes specifications which apply over the operating temperature range, otherwise specificatons are at T
IN
– V
HARA TERISTICS
DROPOUT
).
C
CONDITIONS
I
I
I
I
I
I
I
I
I
I
I
I
I
T
V
V
V
V
V
f
V
V
V
LT1529-3.3
LT1529-5
LT1529 (Note 6)
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
RIPPLE
J
OUT
OUT
SHDN
IN
IN
IN
IN
IN
= 25°C
= V
– V
– V
= V
= – 15V, V
= Off to On
= On to Off
= 700mA, T
= 700mA
= 1.5A, T
= 1.5A
= 3A, T
= 3A
= 0mA, T
= 0mA, T
= 100mA, T
= 100mA, T
= 700mA
= 1.5A
= 3A
= 0V
OUT
OUT
OUT
OUT
= 120Hz, I
(Nominal) + 1V, V
= 1V (Avg), V
= 7V, T
(Nominal) + 1.5V, ∆V
J
OUT
= 25°C
J
J
J
= 25°C
= 25°C
= 125°C (Note 8)
J
J
J
LOAD
= 0V
J
= 25°C
= 25°C
= 125°C (Note 8)
= 25°C
J
= 1.5A
= T
RIPPLE
A
.
V
V
V
SHDN
OUT
OUT
OUT
= 0.5V
OUT
Note 7: GND pin current is tested with V
source load. This means that the device is tested while operating in its
dropout region. This is the worst-case GND pin current. The GND pin
current will decrease slightly at higher input voltages.
Note 8: GND pin current will rise at T
circuitry designed to compensate for leakage currents in the output
transistor at high temperatures. This allows quiescent current to be
minimized at lower temperatures, yet maintain output regulation at high
temperatures with light loads. See quiescent current curve in typical
performance characteristics.
Note 9: ADJ pin bias current flows into the ADJ pin.
Note 10: SHDN pin current at V
Note 11: Quiescent current in shutdown is equal to the sum total of the
SHDN pin current (5µA) and the GND pin current (10µA).
Note 12: Reverse output current is tested with the V
the OUTPUT pin forced to the rated output voltage. This current flows into
the OUTPUT pin and out of the GND pin.
= 3.3V, V
= 5V, V
= 3.8V, V
= 0V
= – 0.1V
P-P
,
IN
IN
IN
= 0V
= 0V
= 0V
LT1529-3.3/LT1529-5
SHDN
MIN
0.25
3.2
50
J
> 75°C. This is due to internal
= 0V flows out of the SHDN pin.
IN
= V
1.20
0.75
OUT
TYP
320
430
600
400
150
0.6
1.0
5.5
4.5
4.7
50
20
80
15
62
16
16
16
5
A
(nominal) and a current
= 25°C. (Note 3)
IN
pin grounded and
MAX
430
550
550
700
750
950
100
160
300
1.0
2.8
1.0
12
40
10
30
LT1529
152935fb
UNITS
3
mV
mV
mV
mV
mV
mV
mA
mA
mA
mA
mA
mA
µA
µA
nA
µA
µA
dB
µA
µA
µA
V
V
A
A

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