AP438 View Datasheet(PDF) - Anachip Corporation
Part Name
Description
Manufacturer
AP438 Datasheet PDF : 8 Pages
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PWM Fan Speed Controller
AP438/9
Electrical Characteristics
Unless otherwise specified, guaranteed for Tj=25OC , VCC=12V .
Symbol
Parameter
VCC
IIN
VIN
DUTY
VIN(OTP)
VIN(Release)
VIN(HS)
VIN(PWM0)
VIN(PWM100)
IS
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
VPWM(ON) PWM transistor ON voltage
IPWM
VOTP(L)
IOTP
FOSC
Max. sink current
OTP low level voltage
Max. sink current
OSC Frequency
Conditions
VIN=2.0V,
Output floating
IPWM=500mA
continued
IOTP=20mA
0OC<TJ<85OC
Min.
7.0
0.5
0
0
3.3
2.65
450
0.75
2.80
500
20
22
Typ.
-
2
3.4
2.75
650
0.8
2.85
2.5
1.1
0.3
30
Max. Units
18
V
7
uA
VCC-0.5 V
100
%
3.5
V
2.85
V
850
mV
0.85
V
2.90
V
mA
1.3
V
mA
0.6
V
mA
38
Khz
Application Circuit
12V
AP439
NTC
1K
OTP
12V
104P
FAN
Anachip Corp.
www.anachip.com.tw
Rev.0.5 Feb.12, 2004
3/8
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