LP3875EMP-2.5/NOPB National Semiconductor, LP3875EMP-2.5/NOPB Datasheet - Page 13
![IC REG LDO 1.5A 2.5V SOT223-5](/photos/12/65/126584/pkg_mp05a_sml.jpg)
LP3875EMP-2.5/NOPB
Manufacturer Part Number
LP3875EMP-2.5/NOPB
Description
IC REG LDO 1.5A 2.5V SOT223-5
Manufacturer
National Semiconductor
Datasheet
1.LP3872EMP-3.3NOPB.pdf
(18 pages)
Specifications of LP3875EMP-2.5/NOPB
Regulator Topology
Positive Fixed
Voltage - Output
2.5V
Voltage - Input
Up to 7V
Voltage - Dropout (typical)
0.38V @ 1.5A
Number Of Regulators
1
Current - Output
1.5A (Max)
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-223 (4 leads + Tab)
Number Of Outputs
1
Polarity
Positive
Input Voltage Max
7 V
Output Voltage
2.5 V
Output Type
Fixed
Dropout Voltage (max)
0.05 V at 150 mA
Output Current
1.5 A
Line Regulation
0.02 %
Load Regulation
0.06 %
Voltage Regulation Accuracy
+/- 1.5 %
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
Details
Other names
LP3875EMP-2.5
LP3875EMP-2.5TR
LP3875EMP-2.5TR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LP3875EMP-2.5/NOPB
Manufacturer:
National Semiconductor
Quantity:
1 852
Application Hints
SENSE PIN
In applications where the regulator output is not very close to
the load, LP3875 can provide better remote load regulation
using the SENSE pin. Figure 2 depicts the advantage of the
SENSE option. LP3872 regulates the voltage at the output
pin. Hence, the voltage at the remote load will be the regu-
lator output voltage minus the drop across the trace resis-
SHUTDOWN OPERATION
A CMOS Logic level signal at the shutdown ( SD) pin will
turn-off the regulator. Pin SD must be actively terminated
through a 10kΩ pull-up resistor for a proper operation. If this
(Continued)
FIGURE 2. Improving remote load regulation using LP3875
FIGURE 1. Error Flag Operation
13
tance. For example, in the case of a 3.3V output, if the trace
resistance is 100mΩ, the voltage at the remote load will be
3.15V with 1.5A of load current, I
the voltage at the sense pin. Connecting the sense pin to the
remote load will provide regulation at the remote load, as
shown in Figure 2. If the sense option pin is not required, the
sense pin must be connected to the V
pin is driven from a source that actively pulls high and low
(such as a CMOS rail to rail comparator), the pull-up resistor
is not required. This pin must be tied to Vin if not used.
20063307
LOAD
. The LP3875 regulates
20063308
OUT
pin.
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