ACT4060A
ORDERING INFORMATION
PART NUMBER
ACT4060ASH
ACT4060ASH-T
Rev 1, 25-Jun-09
TEMPERATURE RANGE
-40°C to 85°C
-40°C to 85°C
PACKAGE
SOP-8
SOP-8
PINS
8
8
PACKING
TUBE
TAPE & REEL
PIN CONFIGURATION
BS
IN
SW
G
1
2
8
7
N/C
EN
COMP
FB
ACT4060ASH
3
4
6
5
SOP-8
PIN DESCRIPTIONS
PIN
1
2
3
4
5
6
7
8
NAME
BS
IN
SW
G
FB
COMP
EN
N/C
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.
Input Supply. Bypass this pin to G with a low ESR capacitor. See
Input Capacitor
in the
Application Information
section.
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.
Compensation Pin. See
Stability Compensation
in the
Application Information
section.
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 with a 2µA pull-up current.
Not Connected.
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TM
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