ACT4060
Rev8, 24-Jul-07
ORDERING INFORMATION
PART NUMBER
ACT4060SH
TEMPERATURE RANGE
PACKAGE
SOP-8
PINS
PACKING
TUBE
-40°C to 85°C
-40°C to 85°C
8
8
ACT4060SH-T
SOP-8
TAPE & REEL
PIN CONFIGURATION
SOP-8
PIN DESCRIPTIONS
PIN NUMBER
PIN NAME
PIN DESCRIPTION
Bootstrap. This pin acts as the positive rail for the high-side switch’s gate driver.
Connect a 10nF capacitor between BS and SW.
1
BS
Input Supply. Bypass this pin to G with a low ESR capacitor. See Input Capacitor
in the Application Information section.
2
IN
3
4
SW
G
Switch Output. Connect this pin to the switching end of the inductor.
Ground.
Feedback Input. The voltage at this pin is regulated to 1.293V. Connect to the
resistor divider between output and ground to set output voltage.
5
6
FB
Compensation Pin. See Stability Compensation in the Application Information
section.
COMP
Enable Input. When higher than 1.3V, this pin turns the IC on. When lower than
0.7V, this pin turns the IC off. Output voltage is discharged when the IC is off.
When left unconnected, EN is pulled up to 4.5V tip with a 2µA pull-up current.
7
8
EN
N/C
Not Connected.
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ACTIVE-SEMI [ ACTIVE-SEMI, INC ]
