CLM2815
CORPORATION
FIGURE 2. BASIC ADJUSTABLE REGULATOR
FIGURE 3. BASIC ADJUSTABLE REGULATOR
RP PARASITIC LINE
RESISTANCE
VOUT
CLM2815
CLM2815
VOUT
VOUT
CONNECT R 1
TO CASE OF
REGULATOR
VREF
R1
R1
R2
IADJ
50 A
RL
CONNECT
R2 TO
LOAD
R2
VOUT = VREF (1 + R1/R2) + IADJ R2
1U-23
1U-24
Output Voltage
Load Regulation
Consider Figure 2. The resistance R1 generates a constant
current flow, normally the specified load current of 10mA.
This current will go through the resistance R2 to set the overall
output voltage. The current IADJ is very small and constant.
Therefore its contribution to the overall output voltage is very
small and can generally be ignored.
Parasitic line resistance can degrade load regulation. In order
not to affect the behavior of the regulator, it is best to connect
directly the R1 resistance from the resistor divider to the case,
and not to the load. For the same reason, it is best to connect
the resistor R2 to the Negative side of the load.
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CALOGIC [ CALOGIC, LLC ]
