APX9270
Direct PWM Variable Speed Fan Motor Driver
Features
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Single Phase Full Wave Fan Driver
Low Quiescent Current (6mA Typical)
Built-in Variable Speed Function
Current Limit Circuit (includes both internal and
external Current Limit)
Built-in Lock Protection and Auto Restart Function
FG (rotation speed detection) Output
Soft Switching Circuit (before phase change,
enabling low-consumption, low loss and low
noise drive.)
Over Voltage Protection (16.5V Typical)
Built-in Kickback Absorption Circuit
Built-in Thermal Protection Circuit
Lead Free and Green Devices Available (RoHS
Compliant)
General Description
The APX9270 is a single phase, DC brushless motor
driver with PWM variable speed control and current limit
features suitable for the fan of personal computer’ power
s
supply and CPU cooler. The PWM control system includes
thermistor input signal and direct PWM input signal, en-
abling highly silent and low vibration speed control. The
device is equipped with a built-in lock protection, which
protects the fan when it is locked. It also has rotation
speed detection output and thermal protection function.
The APX9270 is available in SSOP-20 and TSSOP-20P
packages (see Pin Configurations).
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Applications
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CPU Coolers
Variable Speed Control Fans
Ordering and Marking Information
APX9270
Assembly Material
Handling Code
Temperature Range
Package Code
APX9270
XXXXX
Package Code
N : SSOP-20
R: TSSOP-20P
Operating Ambient Temperature Range
I : -40 to 90
o
C
Handling Code
TR : Tape & Reel
Assembly Material
L : Lead Free Device
G : Halogen and Lead Free Device
XXXXX - Date Code
APX9270 N/R :
Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which
are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020C for
MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen
free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by
weight).
Pin Configurations
PGND 1
OUT2 2
VM 3
VCC 4
OSCH 5
OSCL 6
SET 7
MIN 8
PWM 9
OSC10
SSOP-20
20 PGND
19 PGND
18 OUT1
17 SGND
16 6VREG
15 CT
14 IN -
13 HB
12 IN +
11 FG
PGND 1
OUT2 2
VM 3
VCC 4
OSCH 5
OSCL 6
SET 7
MIN 8
PWM 9
OSC10
TSSOP-20P
20 PGND
19 PGND
18 OUT1
17 SGND
16 6VREG
15 CT
14 IN -
13 HB
12 IN +
11 FG
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain
the latest version of relevant information to verify before placing orders.
Copyright
©
ANPEC Electronics Corp.
Rev. A.3 - Jun., 2008
1
www.anpec.com.tw
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
