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參數(shù)資料
| 型號： | P82CF201BDH |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Low power, low price dual fan manager |
| 中文描述： | BRUSHLESS DC MOTOR CONTROLLER, PDSO20 |
| 封裝： | 4.40 MM, PLASTIC, MO-153, SOT-360-1, TSSOP-20 |
| 文件頁數(shù)： | 2/11頁 |
| 文件大?。?/td> | 83K |
| 代理商： | P82CF201BDH |
Philips Semiconductors
Product data
P82CF201
Low power, low price dual fan manager
2
2002 Nov 18
853–2393 29207
GENERAL DESCRIPTION
The P82CF201 is a 20-pin single-chip dual digital fan controller
designed for use with brushless DC fan motors. A thermistor (or
temperature resistive sensor) connected to the R
thermC
input
provides the required resistance of 10K to 1.75 K
for 30% to 98%
PWM duty cycle.
With temperature less than 25
°
C (thermistor resistance more than
10 K
) and THRESHOLD is set to LOW, the fan will be off. When
temperature rises above 25
°
C (NTC thermistor at 10K or less), the
PWM turns the fan on. The P82CF201 features a Turn-on Delay for
a second fan when both fans have to turn-on. This reduces the
in-rush current and suppresses acoustic noise.
The P82CF201 also features fan fault sensing for enhancing system
protection and reliability. It detects the presence of a fan, when the
running fan fails or jams using the voltage on V
SENSE
pin and
asserts the fault signal. The fault condition also triggers the
maximum PWM applied to the running fan. The fault is also asserted
when the thermistor resistance is less than 1.5 K
(temperature is
over 76
°
C).
FEATURES
Temperature proportional fan speed control resulting in low
acoustic and longer fan life
3.0 V to 5.5 V operating range
Dual PWM fan drive
Constant temperature monitoring ensure reliable motor start-up at
turn-on, coming out of fault condition, or following a transient fault
Constant fan sensing protect against fan failure and fault condition
Over temperature and fan fail output pin
20 mA direct drive to LED indicators for fan power supply failure,
fan failure, overheat warning, no fan connect
500 mS turn-on delay for the second fan when both fans have to
turn-on, reducing high surge current and noise
On-chip power-on reset allows operation with no external
components
The watchdog timer performs self-check and reset function
On-chip oscillator allows operations with no external oscillator
components
Supports low cost NTC thermistors (for PTC use P82CF202)
Hysteresis control (when THRESHOLD pin is connected to
Vss/Ground) for resistance between 10K (25
°
C) and 15K (20
°
C)
during cooling to avoid unnecessary fan turning during cool down
Constant cooling (when THRESHOLD pin is not connected or tied
to V
DD
) for resistance above 10K
Maximum PWM is asserted when one fan fails, cooling the system
during fan failure
20-pin TSSOP package.
ORDERING INFORMATION
Type number
Package
Name
TSSOP20
Description
plastic thin shrink small outline package; 20 leads; body width 4.4 mm
Thermistor Range
NTC – 1.7 to 32 K
Version
SOT360-1
P82CF201BDH
PIN CONFIGURATION, 20-PIN TSSOP PACKAGES
SU01716
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
FAN1DRIVE
V
SENSE1
FAN2DRIVE
NC
V
SS
V
SENSE2
FAULT
NC
NC
NC
NC
THRESHOLD
R
thermC
R
refC
NC
V
DD
NC
R
thermC
DRIVE
NC
R
refC
DRIVE
10
P82CF201
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