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 AP438/9
PWM Fan Speed Controller Features
- Built-in 30Khz OSC provide 0%~100% PWM output - Over Temperature Protector(OTP) flag. (AP439 only). - Open collect output(OTP & PWM pins). - SIP-4L package for AP438. - SIP-5L, SOP-8L package for AP439.
General Descriptions
The AP438/9 series's PWM output has built-in NPN power transistor that controls the Fan current & Fan speed. AP439 built-in over temperature alarm flag.
Applications
- PC Power. - DC Fan
Pin Assignment
Front View AP438
Pin Descriptions
Name VCC VIN OTP PWM GND Description Operating voltage input Reference input voltage Over Temperature protect flag. PWM Open Collect Output. Ground
OTP 1 VCC 2 VIN 3 PWM 4
8 GND
AP439
7 GND 6 GND 5 GND GND PWM VIN VCC OTP
VCC
GND
SIP-4L
VIN
PWM
Ordering Information
AP439
Part Number
8 9 : AP438 : AP439
AP43 X X X X
Package Lead Free Packing
Blank : Tube or bulk A : Taping
P : SIP-4/5L Blank : Normal S : SOP-8L L : Lead Free Package
SOP-8L
SIP-5L
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.
Rev.0.5 Feb.12, 2004 1/8
AP438/9
PWM Fan Speed Controller Block Diagrams
VCC compartor
+
OTP
Oscillator VIN +
PWM compartor PWM
GND
Absolute Maximum Ratings
Symbol VCC VIN OTP PWM PD PD TST TOP VOP Supply Voltage Input voltage Over temperature output. Output voltage to Ground Power dissipation (SIP-4/5L) Power dissipation (SOP-8L) Storage temperature range Operating temperature range Operating voltage range Parameter Rating 20 20 20 20 0.5 0.8 -65 to 150 0 to +85 7.0 to 18 Unit V V V V W W
o o
C C
V
Anachip Corp. www.anachip.com.tw 2/8
Rev.0.5 Feb.12, 2004
AP438/9
PWM Fan Speed Controller Electrical Characteristics
Unless otherwise specified, guaranteed for Tj=25 C , VCC=12V .
O
Symbol VCC IIN VIN DUTY VIN(OTP) VIN(Release) VIN(HS) VIN(PWM0) VIN(PWM100) IS VPWM(ON) IPWM VOTP(L) IOTP FOSC
Parameter Supply Voltage Input Bias Current(VIN Pin) Input Voltage Range PWM duty cycle range OTP Detect Voltage OTP release Voltage OTP detect Voltage Hysteresis Max Input voltage of 0% PWM Min Input voltage of 100% PWM Supply Current PWM transistor ON voltage Max. sink current OTP low level voltage Max. sink current OSC Frequency
Conditions VIN=2.0V,
Min. 7.0 0.5 0 0 3.3 2.65 450 0.75 2.80
Typ. 2
Max. 18 7 VCC-0.5 100 3.5 2.85 850 0.85 2.90 1.3 0.6 38
Units V uA V % V V mV V V mA V mA V mA Khz
Output floating IPWM=500mA continued 500 IOTP=20mA 20 0OC3.4 2.75 650 0.8 2.85 2.5 1.1 0.3 30
Application Circuit
12V
AP439
12V
104P FAN
NTC
1K
OTP
Anachip Corp. www.anachip.com.tw 3/8
Rev.0.5 Feb.12, 2004
AP438/9
PWM Fan Speed Controller Typical Characteristics
PWM ON Voltage v.s. Suppy Voltage
1.1
2.51 2.5
Supply Current v.s. Suppy Voltage
PWM ON Voltage (V)
1.095
Suppy Current (mA)
1.09 1.085 1.08 1.075 1.07 1.065 1.06 7 8 9 10 11 12 13 14 15 16 17 18
2.49 2.48 2.47 2.46 2.45 2.44 2.43 2.42 7 8 9 10 11 12 13 14 15 16 17 18
Suppy Voltage (V)
Suppy Voltage (V)
1.15 1.1 1.05 1 0.95 0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5
PWM ON Voltage v.s. System Loading
32.8 32.4 32 31.6 31.2 30.8 30.4 30 29.6 0 50 100 150 200 250 300 350 400 450 500 550
Frequency v.s. Temperature
PWM ON Voltage (V)
Frequency (kHz)
-40 -20
0
System Loading (mA)
20 40 60 80 100 120 140 T em perat ure ()
PWM Transistor ON Voltage(V)
1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -10
PWM Transistor ON Voltage(V)
PWM On Voltage v.s.Temperature (Io=100mA)
PWM On Voltage v.s. Temperature (Io=500mA)
1.065 1.06 1.055 1.05 1.045 1.04 1.035 1.03 1.025 -10 0 10 20 30 40 50 60 70 80 90 100
0
10
20
30
40
50
60
70
80
90 100
Temperature ()
Temperature ()
Anachip Corp. www.anachip.com.tw 4/8
Rev.0.5 Feb.12, 2004
AP438/9
PWM Fan Speed Controller Marking Information
(1) SIP4/5L
8:438 9:439 AP43 X X XX X X Blank: normal L: Lead Free Package Date code ID code: internal XX : Nth week X :Year
(2) SOP-8L
( Top View )
8 5
Logo Part Number
AC AP439 YY WW X X
Blank: normal L: Lead Free Package ID code: internal Xth week: 01~52 Year: "01" =2001 "02" =2002 ~
1
4
SOP-8L
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.
Rev.0.5 Feb.12, 2004 5/8
AP438/9
PWM Fan Speed Controller Package Information
(1) Package Type: SIP-4L ( unit: mm / [inch] )
5 ~ 7
0.30 0.1 [0.012 0.004] 3 ~ 5 5.22 0.1[0.206 0.004] 4.20 0.1 [0.165 0.004] 3.65 0.1 1.03 0.1 [0.041 0.004] 3 ~ 5 5 ~ 7
1.55 0.1 [0.061 0.004]
AP438
1.42 0.1 [0.056 0.004] 0.2 Max. [ 0.008 Max.]
[0.144 0.004] 0.46 0.03 [0.018 0.001]
14.25 1.25 [0.561 0.049]
1.27 0.03 [0.050 0.001] 3.81 0.03 [0.150 0.001]
0.38 0.03 [0.015 0.001] 0.38 0.03 [0.015 0.001]
Anachip Corp. www.anachip.com.tw 6/8
Rev.0.5 Feb.12, 2004
AP438/9
PWM Fan Speed Controller Package Information (Continued)
(2) Package Type: SIP-5L ( unit: mm / [inch] )
5.22 0.1 [0.206 0.003]
2 ~ 3
2-0.3C [0.079-0.012C] 2 ~ 5
1.55 0.1 [0.061 0.003]
4.2 REF [0.165 REF] 2 ~ 5
0.73 0.1 [0.029 0.003]
2 ~ 3
3.65 0.1 [0.144 0.003]
AP439
0.48 0.1 [0.019 0.003]
14.3 0.3 [0.563 0.012]
0.38 0.03 [0.015 0.001]
0.95 0.03 [0.037 0.001]
0.38 0.03 [0.015 0.001]
Anachip Corp. www.anachip.com.tw 7/8
Rev.0.5 Feb.12, 2004
AP438/9
PWM Fan Speed Controller Package Information (Continued)
(3) Package Type: SOP-8L
E
H
L VIEW "A"
D 7 (4X) A2 A
0.015x45
7 (4X)
A1
e
B y
C
VIEW "A"
Symbol A A1 A2 B C D E e H L y
Dimensions In Millimeters Min. Nom. Max. 1.40 1.60 1.75 0.10 0.25 1.30 1.45 1.50 0.33 0.41 0.51 0.19 0.20 0.25 4.80 5.05 5.30 3.70 3.90 4.10 1.27 5.79 5.99 6.20 0.38 0.71 1.27 0.10 O 8O 0
Dimensions In Inches Min. Nom. Max. 0.055 0.063 0.069 0.040 0.100 0.051 0.057 0.059 0.013 0.016 0.020 0.0075 0.008 0.010 0.189 0.199 0.209 0.146 0.154 0.161 0.050 0.228 0.236 0.244 0.015 0.028 0.050 0.004 O 0 8O
Anachip Corp. www.anachip.com.tw 8/8
Rev.0.5 Feb.12, 2004


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