Datasheet

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SBVS070B − JUNE 2006 − REVISED MAY 2009
www.ti.com
9
TYPICAL CHARACTERISTICS (Continued)
At T
A
= +25°C and V
DD1
= V
DD2
= +5V with external 100kHz filter BW, unless otherwise noted.
50.250
50.125
50.000
49.875
49.750
49.625
−
25
−
50
R
REF IN
(k
Ω
)
0 25 50 75 100 125 150
DIFFERENTIAL AMPLIFIER:
REF
IN
RESISTANCE vs TEMPERATURE
Temperature (
_
C)
70
60
50
40
30
20
10
0
1k100
Gain VPWM
AVERAGE
/(V
ICOMP1
,V
ICOMP2
)(dB)
10k 100k
COMPENSATION LOOP:
SMALL−SIGNAL GAIN
Frequency (Hz)
PinGain=Low
PinGain=High
2000
1500
1000
500
0
−
500
−
1000
−
1500
−
2000
−
25
−
50
Duty Cycle Error (ppm)
0 25 50 75 100 125 150
COMPENSATION LOOP:
DUTY CYCLE ERROR vs TEMPERATURE
Temperature (
_
C)
At 400kHz, 5.0V
At 250kHz, 5.0V
−
200
−
180
−
160
−
140
−
120
−
100
−
80
−
60
−
40
−
20
0
20 40 60 80
100 120 140 160 180 200
Population
COMPENSATION LOOP:
DC GAIN: DUTY CYCLE ERROR CHANGE
Gain (ppm/V)
V
ICOMP1
−
V
ICOMP2
=4.2V
I
LOAD
= 210mA
Gain Pin Low
I
COMP
OUTPUTSWINGTORAIL
vs OUTPUT CURRENT
5.00
4.75
4.50
4.25
4.00
1.00
0.75
0.50
0.25
0
0 50 100 150 200 250 300
Output Current (mA)
Output Swing (V)
−
50
_
C
+25
_
C+125
_
C
−
50
_
C
+25
_
C
+125
_
C
35.0
32.5
30.0
27.5
25.0
−
25
−
50
Probe Comparator Threshold Current (mA)
0 25 50 75 100 125 150
PROBE COMPARATOR THRESHOLD
CURRENT vs TEMPERATURE
Temperature (
_
C)