LM5080MM/NOPB National Semiconductor, LM5080MM/NOPB Datasheet - Page 8

• Manufacturer Part Number: LM5080MM/NOPB
• Description: IC CONTROLLER LOAD SHARE 8-MSOP
• Manufacturer: National Semiconductor

Specifications of LM5080MM/NOPB

• Applications: Power Supplies, Converters, Controllers
• Current - Supply: 3.7mA
• Voltage - Supply: 3 V ~ 14 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM5080MM; LM5080MMTR

www.national.com
Reference Adjustment Operation
Mode
voltage reference and feedback divider which do not require
a fast response. In some systems a small resistor (RTRO) in
series with CTRO can improve stability by introducing a zero
at high frequencies to increase the phase margin of the
current share loop.
It is essential that the VCC pins of all LM5080’s be tied to the
same point in this mode. Any mismatch in the VCC voltages
The effective output current from the TRO pin can be multi-
plied to increase the current share loop gain if necessary. R1
should be at least 10kΩ.
(Continued)
FIGURE 2. LM5080 Showing the RSO Buffer Configured to Boost Transconductance
FIGURE 1. Reference Adjust Mode Implementation
8
between LM5080’s will significantly contribute to current
share errors. The current sense resistors should be located
as close to the load as possible to minimize trace resistance
in series with the sense resistors which can also contribute
to sharing errors. In this mode, the best accuracy will be
achieved with lower VCC values since any mismatch in the
gain resistors internal to the LM5080 will affect the current
share accuracy.
20157804
20157805