ISL6421A Intersil Corporation, ISL6421A Datasheet - Page 10

• Manufacturer Part Number: ISL6421A
• Description: Single Output LNB Supply and Control Voltage Regulator
• Manufacturer: Intersil Corporation

Typical Performance Curves
(20mV/DIV)
(20mV/DIV)
22kHz TONE
(0.1V/DIV)
89
88
87
86
85
84
83
82
81
VPWM
VOUT
50.0
18.0V
FIGURE 4. EFFICIENCY vs LOAD CURRENT
14.0V
FIGURE 8. RIPPLE VOUT = 14.0V
150.0
FIGURE 6. 22kHz TONE
250.0
I
OUT
10
10µs/DIV
(mA)
2µs/DIV
350.0
450.0
550.0
ISL6421A
VOUT (1V/DIV)
(20mV/DIV)
(20mV/DIV)
VPWM
89
88
87
86
85
84
83
VOUT
(1V/DIV)
TONE &
8.0
FIGURE 7. 22kHz TONE MODULATED BY DSQIN
DSQIN
450mA
200mA
FIGURE 9. RIPPLE VOUT = 18.0V
FIGURE 5. EFFICIENCY vs VIN
10.0
V
IN
2µs/DIV
(V)
12.0
0.2ms/DIV
14.0
March 9, 2006
FN9167.3