el7534 Intersil Corporation, el7534 Datasheet - Page 3

• Manufacturer Part Number: el7534
• Description: Monolithic 600ma Step-down Regulator
• Manufacturer: Intersil Corporation

Pin Descriptions
Block Diagram
2.5V-
PIN NUMBER
3.5V
EN
+
–
10µF
10
1
2
3
4
5
6
7
8
9
0.1µF
100Ω
100K
124K
V
V
FB
EN
SGND
RSI
DD
O
PIN NAME
SGND
PGND
VDD
POR
VIN
RSI
VO
REFERENCE
EN
LX
FB
5M
BANDGAP
SOFT-START
CLOCK
1.5MHz
3
+
10pF
-
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
Enable
Power on reset open drain output
Output voltage sense
output
Voltage feedback input; connected to an external resistor divider between V
GENERATOR
COMPEN-
LOCKOUT
VOLTAGE
SATION
RAMP
UNDER-
PWM
POR
EL7534
TEMPERATURE
COMPARATOR
SENSE
PWM
+
-
PIN FUNCTION
CONTROL
LOGIC
CURRENT LIMIT
N-DRIVER
P-DRIVER
+
-
O
PGND
and SGND for variable
POR
V
LX
IN
1.8µH
10µF
July 12, 2006
FN7431.8
1.8V
600mA
100K
PG