AP3005 データシートの表示（PDF） - BCD Semiconductor
部品番号
コンポーネント説明
一致するリスト
AP3005 Datasheet PDF : 11 Pages
| |||
2A 420kHz PWM BUCK DC-DC CONVERTER
Pin Configuration
M Package
(SOIC-8)
Preliminary Datasheet
AP3005
NC 1
VIN 2
SW 3
GND 4
8 NC
7 EN
6 COMP
5 FB
Figure 2. Pin Configuration of AP3005 (Top View)
Pin Description
Pin Number Pin Name
Function
1, 8
NC
No Connection
Supply Voltage Input Pin. The AP3005 operates from a 4.75V to 25V DC
2
VIN voltage. Bypass VIN to GND with a suitable large capacitor to eliminate noise
on the input
3
SW
Power Switch Output Pin. SW is the switch node that supplies power to the
output
4
GND Ground Pin.
Feedback Pin. Through an external resistor divider network, FB senses the
output voltage and regulates it. To prevent current limit run away in a short
5
FB
circuit fault condition, the frequency feedback comparator lowers the oscillator
frequency to 40kHz when the FB voltage is below 0.52V. The feedback
threshold voltage is 0.8V
Compensation Pin. This pin is the output of the error amplifier. Frequency
6
COMP compensation is done at this pin by connecting a series RC to ground (parallel a
C if necessary)
7
EN
Enable Pin. Drive EN pin high to turn on the device, drive it low to turn off.
Default of this pin is high level
Jun. 2009 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
2
Share Link: 