Datasheet

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
SLUS577C − SEPTEMBER, 2003 − REVISED MARCH 2009
19
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APPLICATION INFORMATION
Figure 8
141210
7.45
7.50
7.55
7.60
7.40
VCC − Supply Voltage − V
13119
VREF − Reference Voltage − V
REFERENCE VOLTAGE
vs
SUPPLY VOLTAGE
Figure 9
REFERENCE VOLTAGE
vs
REFERENCE CURRENT
0 5 10 15 20 25
7.495
7.500
7.505
7.510
7.490
VREF − Reference Voltage − V
I
VREF
− Reference Current − mA
Figure 10
MULTIPLIER OUTPUT CURRENT
vs
VOLTAGE ERROR AMPLIFIER OUTPUT
0.0 1.0 2.0 3.0 4.0 5.0
50
200
250
350
0
100
300
150
I
MOUT
- Multiplier Output Current −
µ
A
VAOUT − Voltage Error Amplifier Output − V
IAC = 150 µA
V
FF
= 1.4 V
IAC = 300 µA
V
FF
= 3.0 V
IAC = 500 µA
V
FF
= 4.7 V
Figure 11
MULTIPLIER GAIN
vs
VOLTAGE ERROR AMPLIFIER OUTPUT
1.0 2.0 3.0 4.0 5.0
0.7
1.1
1.3
1.5
0.5
0.9
IAC = 300
µ
A
IAC = 500
µ
A
IAC = 150
µ
A
Multiplier Gain − K
VAOUT − Voltage Error Amplifier Output − V