ISL6422 INTERSIL [Intersil Corporation], ISL6422 Datasheet - Page 7

• Manufacturer Part Number: ISL6422
• Description: Dual Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-Top Box Designs
• Manufacturer: INTERSIL [Intersil Corporation]

Electrical Specifications
NOTES:
TXT1 AND TXT2, EXTM1 AND EXTM2, SELVTOP1 AND SELVTOP2, ADDR0 AND ADDR1 INPUT PINs (Note 8)
Asserted LOW
Asserted HIGH
Input Current
CURRENT SENSE (CS pin)
Input Bias Current
Overcurrent Threshold
ERROR AMPLIFIER
Open Loop Voltage Gain
Gain Bandwidth Product
PWM
Maximum Duty Cycle
Minimum Pulse Width
OSCILLATOR
Oscillator Frequency
Thermal Shutdown
Temperature Shutdown Threshold
Temperature Shutdown Hysteresis
FLT
FLT (released)
FLT (asserted)
5. Internal digital soft-start.
6. The EXTM1 and EXTM2, SELVTOP1 and SELVTOP2, TXT1 and TXT2, and ADDR0 and ADDR1 pins have 200k internal pull-downs.
7. On exceeding this dynamic back current limit threshold for a period of 100µs, the device enters the dynamic current limit mode, and the BCF I
8. In the dynamic back current limit mode, the output is ON for 20ms and OFF for 900ms, but remains continuously ON in the Static mode. When
bit is set. The dynamic back current limit duty during a BCF is ON = 100µs or OFF = 5ms.
tone is ON, the minimum current limit is 50mA lower than the values indicated in the table. While in the dynamic mode of current limit, the trip
level is momentarily increased to 990mA during the 20ms ON time to facilitate recovery from overload conditions.
PARAMETER
7
V
VTOP1 = VTOP2 = L, ENT1 = ENT2 = L, DCL = L, DSQIN1 = DSQIN2 = L, I
noted. See “ISL6422 Software Description” on page 12 for I
CC
= 12V, T
SYMBOL
I
V
A
GBP
BIAS
f
CS
OL
o
A
= -20°C to +85°C, unless otherwise noted. Typical values are at T
Static current mode, DCL = H
Fixed at (20) (f
V
ISINK = 3.2mA (1.5k pull-up resistor to 5V)
O
= 6V
ISL6422
TEST CONDITIONS
tone
)
2
C access to the system. (Continued)
MIN
325
396
1.7
90
OUT
TYP
700
450
440
150
A
25
88
14
93
20
20
= 12mA, unless otherwise
= +25°C. EN1 = EN2 = H,
MAX
500
484
0.8
0.4
10
April 10, 2007
UNITS
MHz
kHz
mV
FN9190.1
μA
nA
dB
°C
°C
µA
ns
%
V
V
V
2
C