LT1529CT-5#06PBF

Manufacturer Part NumberLT1529CT-5#06PBF
DescriptionIC REG LDO 5V 3A TO220-5
ManufacturerLinear Technology
LT1529CT-5#06PBF datasheet
 

Specifications of LT1529CT-5#06PBF

Regulator TopologyPositive FixedVoltage - Output5V
Voltage - InputUp to 15VVoltage - Dropout (typical)0.6V @ 3A
Number Of Regulators1Current - Output3A
Current - Limit (min)3.2AOperating Temperature0°C ~ 125°C
Mounting TypeThrough HolePackage / CaseTO-220-5 (Straight Leads)
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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W
U
TYPICAL PERFOR
A
Load Regulation
5
LT1529-5
0
LT1529-3.3
–5
LT1529
–10
–15
V
= V
(NOMINAL) + 1V
IN
OUT
–20
= 100mA to 3A
∆I
LOAD
V
= V
ADJ
OUT
–25
– 50
– 25
0
25
50
75
100
125
TEMPERATURE (°C)
LT1529 • G28
U
U
U
PI FU CTIO S
OUTPUT (Pin 1): OUTPUT Pin. The OUTPUT pin supplies
power to the load. A minimum output capacitor of 22µF is
required to prevent oscillations. Larger values will be
required to optimize transient response for large load
current deltas. See the Applications Information section
for further information on output capacitance and reverse
output characteristics.
SENSE (Pin 2): SENSE Pin. For fixed voltage versions of
the LT1529 (LT1529-3.3, LT1529-5) the SENSE pin is the
input to the error amplifier. Optimum regulation will be
obtained at the point where the SENSE pin is connected to
the output pin. For most applications the SENSE pin is
connected directly to the OUTPUT pin at the regulator. In
critical applications small voltage drops caused by the
resistance (R
) of PC traces between the regulator and the
P
load, which would normally degrade regulation, may be
eliminated by connecting the SENSE pin to the OUTPUT
pin at the load as shown in Figure 1 (Kelvin Sense Connec-
tion). Note that the voltage drop across the external PC
traces will add to the dropout voltage of the regulator. The
SENSE pin bias current is 15µA at the nominal regulated
output voltage. This pin is internally clamped to – 0.6V
(one V
).
BE
ADJ (Pin 2): Adjust Pin. For the LT1529 (adjustable
version) the ADJ pin is the input to the error amplifier. This
CE
C
HARA TERISTICS
C
LT1529-5 Transient Response
V
= 6V
IN
0.2
C
= 3.3µF
IN
C
= 47µF
OUT
0.1
0
– 0.1
– 0.2
3
2
1
0
100
200
300
400
500
600
700
800
TIME (µs)
V
pin is internally clamped to 6V and – 0.6V (one V
pin has a bias current of 150nA which flows into the pin.
See Bias Current curve in the Typical Performance Char-
acteristics. The ADJ pin reference voltage is equal to 3.75V
referenced to ground.
SHDN (Pin 4): Shutdown Pin. This pin is used to put the
device into shutdown. In shutdown the output of the
device is turned off. This pin is active low. The device will
be shut down if the SHDN pin is actively pulled low. The
SHDN pin current with the pin pulled to ground will be 6µA.
The SHDN pin is internally clamped to 7V and – 0.6V (one
V
). This allows the SHDN pin to be driven directly by 5V
BE
logic or by open-collector logic with a pull-up resistor. The
pull-up resistor is only required to supply the leakage
current of the open-collector gate, normally several mi-
croamperes. Pull-up current must be limited to a maxi-
mum of 5mA. A curve of SHDN pin input current as a
LT1529
LT1529-3.3/LT1529-5
LT1529-5 Transient Response
V
= 6V
IN
0.2
C
= 10µF
IN
C
= 22µF
OUT
0.1
0
– 0.1
– 0.2
3
2
1
900
1000
0
20
40
60
80
100
120
TIME (µs)
LT1529 • G29
R
P
5
1
V
OUTPUT
IN
LT1529-5
4
2
+
SHDN
SENSE
+
LOAD
GND
IN
3
R
P
LT1529 • F01
Figure 1. Kelvin Sense Connection
140
160
180
200
LT1529 • G30
). This
BE
152935fb
7