ISL6423B Datasheet, PDF (3/16 Pages) Intersil Corporation – Single Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-Top Box Designs

Block Diagram
COUNTER
7
GATE
11
OVERCURRENT
PROTECTION
LOGIC SCHEME 1
OLF/BCF
DCL
PWM
LOGIC
Q
S
CLK1
OC1
PGND
6
CS
9
CS ILIM1
AMP
∑
SLOPE
COMPENSATION
TDOUT
15
TONE
DECODER
14 ^TDIN
TXT
TTH
VREF1
8
VSW
13 ^VO
AGND
12
22 ^VCC
SGND
1
24 ^SGND
ON CHIP
LINEAR
UVLO
POR
SOFT-START
INT 5V
SOFT-START
EN1/EN2
NOTE:
5
10
1. Pinouts shown are for the QFN package.
17 16
34
23
BAND GAP
REF VOLTAGE
REF
VOLTAGE
ADJ1
SDA SCL
ISELL&H
EN
ENT
ADDR0
OUVF
ADDR1
OLF/BCF
OTF
I²C
INTERFACE
TTH
VTOP VBOT
DCL
CLK1 ^OSC.
BGV
DIV &
WAVE SHAPING
TONE
INJ
CKT
INT
TONE
THERMAL
SHUTDOWN
+
-
EXT TONE CKT
ENT1
CHARGE PUMP
CPVOUT
2
18
20
21
19