US91A_14 Datasheet, PDF (3/12 Pages) Melexis Microelectronic Systems – 24V Hall IC Fan Driver

US90A / US91A
24V Hall IC Fan Driver
6 General electrical specifications
o
DC Operating Parameters TA = 25 C, VDD = 24V (unless otherwise specified)
Parameter
Fan Supply Voltage
Supply Current
Output Saturation Voltage
Output Saturation Voltage
Output Clamp Voltage
FG / RD Output Low
Voltage
FG / RD Output Clamp
Voltage
FG / RD Output Leakage
Current
DC Thermal Resistance
VK Thermal Resistance
VA Thermal Resistance
Symbo
l
VDD
IDD
VDSON
1,2
VDSON
1,2
VOUT 1,2
Test Conditions
Operating, RCOIL = 50Ω
IOUT = 150mA
IOUT = 250mA
VOL
IOL = 10mA
VCLAMP
ILEAK
RTHja
RTHja
RTHja
VFG (VRD) = 18V
Onesided PCB, zero LFPM
Onesided PCB, zero LFPM
Onesided PCB, zero LFPM
Min Typ
4.7(1)
2
375
625
60
250
28
150
200
170
Max Units
30
V
4
mA
mV
mV
V
500 mV
V
10
uA
°C/Watt
°C/Watt
°C/Watt
Table 3: General electrical specifications
Note 1: The minimal value of VDD should be determined using the following equation: VDD = 4.5V + RCOIL * IDD
7 Magnetic specifications
o
DC Operating Parameters TA = 25 C, VDD = 24V (unless otherwise specified)
Parameter
Symbol Test Conditions
Operate point
BOP
Release point
BRP
Hysteresis
BHYST
Table 4: Magnetic specifications
Min Typ Max Units
3
6
mT
6
3
mT
2
6
mT
8 Driver output vs. Magnetic Pole
Parameter
North pole
South pole
Test Conditions
B < Brp – all packages
B > Bop all packages
OUT1
High
Low
OUT2
Low
High
Table 5: Driver output vs. magnetic pole
Note 3: The magnetic pole is applied facing the branded side of the package
3901090263
Rev 008
Page 3 of 12
Data Sheet
Jan/14