EL7532 데이터 시트보기 (PDF) - Intersil
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EL7532 Datasheet PDF : 8 Pages
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EL7532
Pin Descriptions
PIN NUMBER
1
2
3
4
PIN NAME
SGND
PGND
LX
VIN
5
VDD
6
RSI
7
EN
8
POR
9
VO
10
FB
Block Diagram
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
Resets POR timer; Connect to ground if not used
Enable; Can be connected directly to the VIN for enable
Power on reset open drain output; Leave open if not used
Output voltage sense pin
Voltage feedback input; connected to an external resistor divider between VO and SGND for variable
output
5
VDD
9
VO
124K
10
FB 5M
10pF
-
+
100K
7 EN
EN
10µF
CLOCK
1.5MHz
SOFT-
START
+
–
2.5V-
5V
BANDGAP
REFERENCE
1 SGND
6 RSI
PWM
COMPEN-
SATION
RAMP
GENERATOR
+
-
PWM
COMPARATOR
+
-
CURRENT
LIMIT
P-DRIVER
CONTROL
LOGIC
4
VIN
LX 1.8µ
3
1.8V
2A
UNDER-
VOLTAGE
LOCKOUT
TEMPERATURE
SENSE
POR
N-DRIVER
10µF
PGND 2
POR
8
100K
PG
3
FN7435.7
December 8, 2006
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