TK65010TL Ver la hoja de datos (PDF) - Toko America Inc

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TK65010TL

BATTERY VOLTAGE MONITOR

Toko America Inc  

TK65010

DESIGN CONSIDERATIONS (CONT.)

The resistor divider consisting of R1/R2 can be scaled

downward by a factor scale factor (K) to utilize smaller

resistor values K x R1 and K x R2 (K < 1). By adding an

additional series resistor, which can be dependent upon

the scale factor (K) and the resistor values comprising the

divider, the VMON pin will effectively see the same voltage

source and drive impedance as illustrated in Figure 4. The

three-resistor attenuator is illustrated below in Figure 5.

VIN

K x R1

K x R2

R1 x R2

(1- K) x R1 + R2

VMON

R1 x R2

R1 + R2

+

VIN x R2

R1 + R2

VMON

FIGURE 5

Page 6

January 1999 TOKO, Inc.

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