ISL6422B_15 Datasheet, PDF (6/19 Pages) Intersil Corporation – Dual Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-Top Box Designs

ISL6422B
Electrical Specifications
V_CC = 12V, T_A = -20°C to +85°C, unless otherwise noted. Typical values are at T_A = +25°C. EN1/2 = H,
VTOP1/2 = L, VBOT1/2 = L,
software description section
fEoNr IT^{21C/2a=ccLe,sDs CtoLth=eLs,} yMsSteEmL.1/(²C⁼on^Lt^,in^IOu^Ue^Td)⁼
12mA,
unless
otherwise
noted.
See
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Dynamic Output Current Limiting
(Note 9)
I_MAX
DCL = 0, ISEL1H, ISEL2H = 0, ISEL1L,
ISEL2L = 0, ISEL1R, ISEL2R = 0
270
305
345
mA
DCL = 0, ISEL1H, ISEL2H = 0, ISEL1L,
ISEL2L = 0, ISEL1R, ISEL2R = 1
350
388
435
mA
DCL = 0, ISEL1H, ISEL2H = 0, ISEL1L,
ISEL2L = 1, ISEL1R, ISEL2R = 1
515
570
630
mA
DCL = 0, ISEL1H, ISEL2H = 1, ISEL1L,
ISEL2L = 0, ISEL1R, ISEL2R = 1
635
705
775
mA
DCL = 0, ISEL1/2H = 1, ISEL1/2L = 1,
ISEL1/2R = 1
800
890
980
mA
Dynamic Overload Protection Off Time
Dynamic Overload Protection On Time
Static Output Current Limiting
Cable Fault CABF Asserted High
TONE OSCILLATOR
t_OFF
t_ON
I_MAX
I_CAB
DCL = L, Output Shorted (Note 9)
DCL = 1 (Notes 6, 9)
EN1 and EN2 = 1;
-
900
-
ms
-
51
-
ms
-
990
-
mA
2
10
20
mA
Tone Frequency
Tone Amplitude
Tone Duty Cycle
Tone Rise or Fall Time
TONE DECODER
f_tone
V_tone
dc_tone
t, t_f
ENT1, ENT2 = H
ENT1, ENT2 = H
ENT1, ENT2 = H
ENT1, ENT2 = H
20.0
22.0
24.0
kHz
500
680
800
mV
40
50
60
%
5
10
14
s
Input Amplitude
Frequency Capture Range
Input Impedance
Detector Output Voltage
Detector Output Leakage
Tone Decoder Rx Threshold
Tone Decoder Tx Threshold
LINEAR REGULATOR
V_TDIN
F_TDIN
Z_DET
V_{TDOUT_L}
I_{TDOUT_H}
V_RXth
V_TXth
Tone Present, I_LOAD = 3mA
Tone absent, V_O = 6V
TXT1, TXT2 = L
TXT1, TXT2 = H
200
-
1000
mV
17.5
-
26.5
kHz
-
8.6
-
k
-
-
0.4
V
-
-
10
A
100
150
200
mV
400
450
500
mV
Drop-out Voltage
I_OUT = 750mA (Note 6)
-
0.8
1.05
V
Output Backward Leakage Current
I_BKLK EN1 and EN2 = 0; V_OBK = 27V
-
2.0
3.0
mA
Output Backward Leakage Current
I_BKLK EN1 and EN2 = 0; V_OBK = 28V
-
3.0
17.0
mA
Output Backward Current Threshold
I_BKTH EN1 and EN2 = 1; V_OFAULT = 19V (Note 8)
-
140
-
mA
Output Backward Current Limit
I_BKLM EN1 and EN2 = 1; V_OFAULT = 19V (Note 8)
-
350
-
mA
Output Backward Voltage
V_OBK EN1 and EN2 = 0
-
-
27
V
Output Undervoltage
(Asserted high during soft-start)
OUVF1, OUVF2 bit is asserted high,
measured from the typ output set value
-6
-
-2
%
Output Overvoltage
(Asserted high during soft-start)
OUVF1, OUVF2 bit is asserted high,
measured from the typ output set value
+2
-
+6
%
6
FN6486.2
September 8, 2015