APX9212
Single-Phase Full-Wave Motor Driver for Fan Motor
Features
General Description
·
·
·
·
·
·
Single Phase Full Wave Fan Driver
Low Quiescent Current (6mA Typical)
The APX9212 is a single phase full wave DC brushless
motor driver with PWM variable speed control, current
limit, and soft-start features suitable for the fan of per-
sonal computer’s power supply, CPU cooler and server.
Adequate S-S pin capacitor could reduce the peak cur-
rent at power on and lock mode. The PWM control sys-
tem works depending on the comparison among the volt-
age of SET, MIN, and OSC. 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 APX9212 is available in
SSOP-16 and TSSOP-16P packages (see Pin
Configuration).
Built-in Variable Speed Function
Minimum Speed Setting
Built-In Current Limit Circuit (1.8A Typical)
Built-In Lock Protection and Auto Restart
Function
·
·
·
·
Soft-Start Function
RD (Lock Detection) Output
Built-In Thermal Protection Circuit
Lead Free and Green Devices Available
(RoHS Compliant)
Applications
·
·
·
CPU Cooler Fans
Instrumentation Fans
Variable Speed Control Fans
Pin Configuration
PGND 1
OUT2 2
VCC 3
MIN 4
SET 5
OSC 6
CT 7
16 PGND
15 OUT1
PGND 1
OUT2 2
VCC 3
MIN 4
SET 5
OSC 6
CT 7
16 PGND
15 OUT1
14 SGND
13 5VREG
14 SGND
13 5VREG
12 S-S
11 IN-
10 HB
9 IN+
12 S-S
11 IN-
10 HB
9 IN+
RD 8
RD 8
TSSOP-16P
(Top View)
SSOP-16
(Top View)
=Thermal Pad (connected to the GND plane for
better heat dissipation)
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 ã ANPEC Electronics Corp.
1
www.anpec.com.tw
Rev. A.1 - Mar., 2014