ISL8010 Ver la hoja de datos (PDF) - Renesas Electronics
Número de pieza
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ISL8010 Datasheet PDF : 11 Pages
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ISL8010
Pin Descriptions
PIN NUMBER
PIN NAME
1
SGND
2
PGND
3
LX
4
VIN
5
VDD
6
SYNC
7
EN
8
PG
9
VO
10
FB
PIN FUNCTION
Negative supply for the controller stage
Negative supply for the power stage
Inductor drive pin; high current digital output with average voltage equal to the regulator output voltage
Positive supply for the power stage
Power supply for the controller stage
SYNC input pin; when connected to HI, regulator runs at forced PWM mode; when connected to Low, auto
PFM/PWM mode; when connected to external sync signal, at external PWM frequency up to 12MHz
Enable
Power-Good open drain output
Output voltage sense
Voltage feedback input; connected to an external resistor divider between VO and SGND for variable
output
Block Diagram
SYNC
EN
100
0.1µF
C4
470pF
124k
VDD
VO
FB 5M
10pF
-
+
100k
10µF
SYNC
CLOCK
EN
SOFT-
START
5V
+
–
BANDGAP
REFERENCE
SGND
INDUCTOR SHORT
PWM
COMPENSATION
PWM
COMPARATOR
+
-
+
-
CURRENT
SENSE
P-DRIVER
RAMP
GENERATOR
PFM
ON-TIME
CONTROL
CONTROL
LOGIC
VIN
LX 1.8µH
1.8V
0mA TO 600mA
UNDER-
VOLTAGE
LOCKOUT
POWER
GOOD
+
-
PWM
COMPARATOR
TEMPERATURE
SENSE
N-DRIVER
10µF
PGND
+
-
SYNCHRONOUS PG
RECTIFIER
100k
PG
FN6191 Rev 6.00
October 18, 2010
Page 3 of 11
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