ISL6424 Datasheet, PDF (3/12 Pages) Intersil Corporation – Dual Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-Top Box Designs

Block Diagram
4
14
15
16
COUNTER
OVERCURRENT
PROTECTION
LOGIC SCHEME 1
OLF1
DCL
SEL18V1
OLF2
DCL
OVERCURRENT
PROTECTION
LOGIC SCHEME 2
COUNTER
8
GATE1
PGND1
7
PWM
LOGIC
Q
S
CLK1
OC1
CS ILIM1
AMP
CS1
9
∑
11
COMP1
SLOPE
COMPENSATION
FB1
10
VREF1
VSW1
12
VO1
19
OC2
CLK2
PWM
LOGIC
Q
S
GATE2
32
SDA
ADDR SCL
PGND2
1
ISEL1
EN1
ENT1
OLF1 ^OLF2
I²C
INTERFACE
ISEL2
EN2
ENT2
ILIM2 _CS
AMP
∑
CS2
2
OTF
LLC1 VSEL1
DCL
VSEL2 LLC2
SLOPE
COMPENSATION
BAND GAP
REF VOLTAGE
REF
VOLTAGE
ADJ1
BGV
CLK1
OSC. _CLK2
220kHz
÷ 10 &
WAVE SHAPING
TONE
INJ
CKT 1
22kHz
TONE
TONE
INJ
CKT 2
BGV
REF
VOLTAGE
ADJ2
VREF2
COMP2
30
FB2
31
SEL18V2
5
VSW2
29
+
VO2
21
+
-
-
ENT2
27
VCC
ON CHIP
LINEAR
UVLO
SGND
POR
3
SOFT-START
INT 5V
SOFT-START
EN1/EN2
6
ENT1
CPVOUT
26
OTF
THERMAL
SHUTDOWN
CPSWIN
CHARGE PUMP
25
CPSWOUT
20
17
18
22
23
24