isl97701 Intersil Corporation, isl97701 Datasheet - Page 2

• Manufacturer Part Number: isl97701
• Description: Boost Regulator With Integrated Schottky And Input Disconnect Switch
• Manufacturer: Intersil Corporation

Block Diagram
NSYNC
GND
NEN
FB
VDD
VDD
ISL97701
SYNCHRONIZATION
SIGNAL DETECTOR
OSCILLATOR
2
REFERENCE
VOLTAGE
+
-
ERROR
AMP
START
CLK
FIGURE 1. ISL97701 BLOCK DIAGRAM
1
0
MUX
STATE MACHINE
(DEFAULT SEQUENCE)
1. SOFT INRUSH
2. VDD
3. SOFT BOOST 25
4. SOFT BOOST 50
5. SOFT BOOST 75
6. NORMAL
C
COMP
OVER-TEMPERATURE
RESTART
RAMP-GENERATOR
OUT
COMPENSATION
DETECTOR
ISL97701
CLAMP
SLOPE
ENABLE
DISABLE AND WAIT
+
+
+
As
-
-
Av
-
Ai
Σ = 0
2
UNDER-VOLTAGE
-PWM TIMING
-CURRENT LIMIT
-PULSE SKIPPING
CONTROL LOGIC
DETECTOR
OVER-CURRENT
DETECTOR (DC)
EN
COMPARATOR
CURRENT
DETECTOR
VOLTAGE
DRIVER
LIMIT
GATE
OVER-
RSENSE
S2
April 23, 2007
VDD
VDDOUT
VOUT
LX
GND
FN6474.0