FN4496 Datasheet, PDF (2/14 Pages) Intersil Corporation – Advanced PWM and Dual Linear Power Control

Block Diagram
GATE3
FB3
VSEN1
OCSET1
VCC
V33
-
+
VIN2
+
-
VOUT2
FB2
+
0.23A ^-
0.3V
INHIBIT
+
1.26V
-
LINEAR
UNDER-
VOLTAGE
+
-
+
-
LUV
OC2
110%
+
-
90%
+
-
115%
+
-
200µA
POWER-ON
RESET (POR)
FAULT
VIN2
2.5V ⁺
-
+
-
+
+
4.3V
-
VCC
11µA
4V
SOFT- ^OV
START
& FAULT
LOGIC
TTL D/A
CONVERTER
(DAC)
DACOUT
OC1
+
-
ERROR
AMP
UPPER
DRIVE
VCC
+
-
INHIBIT
+
-
PWM
COMP
PWM
GATE
CONTROL
LOWER
DRIVE
VCC
OSCILLATOR
PGOOD
UGATE1
PHASE1
LGATE1
PGND
GND
GND2
SS
VID0 VID2 VID4
FB1 COMP1
RT
VID1 VID3
FIGURE 1.