Document
UNISONIC TECHNOLOGIES CO., LTD
H654
LINEAR INTEGRATED CIRCUIT
COMPLEMENTARY OUTPUT HALL EFFECT LATCH
DESCRIPTION
The UTC H654 is integrated Hall sensors with complementary output drivers designed for electronic commutation of brushless DC Fan. It composed of an on-chip Hall voltage generator, a differential amplifier, Schmitt trigger, an open-collector output on a single chip. Furthermore, an internal bandgap regulator allows temperature compensated operations and a wide operating supply range. An on-chip protection diode is implemented to prevent reverse power fault.
When the magnetic flux density larger than threshold BOP, DO will be turned on(low) and DOB be turned off(high). The output state is held until the magnetic flux density is lower than BRP, and then DO is reversal to turned off and DOB turned on.
FEATURES
* Operate from 3.5V ~ 20V supply voltage. * On-chip Hall sensor with two different sensitivity and hysteresis
settings. * High output sinking capability up to 300mA for driving large load. * Lower current change rate reduces the peak output voltages during
switching. * Build-in protecting diode for chip reversal power connecting.(Note1)
1 SIP-4
*Pb-free plating product number: H654L
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
H654-G04-K
H654L-G04-K
Package SIP-4
Packing Bulk
H654L-G04-K
(1)Packing Type (2)Package Type (3)Lead Plating
(1) B: Bulk (2) G04: SIP-4 (3) L: Lead Free Plating, Blank: Pb/Sn
PIN DESCRIPTION
PIN NO. PIN NAME 1 VCC 2 DO 3 DOB 4 VSS
P/I/O P O O P
DESCRIPTION Positive Power Supply Output Pin Output Pin Ground
www.unisonic.com.tw Copyright © 2005 Unisonic Technologies Co., Ltd
1 of 5
QW-R118-003,B
H654
BLOCK DIAGRAM
1 VCC
REG.
Hall Sensor
LINEAR INTEGRATED CIRCUIT
DO 2
DOB 3
VSS 4
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 5
QW-R118-003,B
H654
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (Ta=25 )
PARAMETER Supply Voltage Reverse VCC Polarity Voltage Output OFF Voltage Magnetic flux density
Output ON Current
Power Dissipation Junction Temperature Operating Temperature Storage Temperature Note 1: Output Zener protection voltage
Continuous Hold
Peak (Start Up)
SYMBOL VCC VRCC VCE B
IC
PD TJ TOPR TSTG
RATINGS 20 -35 50
Unlimited 0.3 0.4 0.7 500 +150
-20 ~ +85 -65 ~ +150
UNIT V V V
A
mW
ELECTRICAL CHARACTERISTICS (Ta =25 , unless otherwise specified.)
PARAMETER Low Supply Voltage Supply Voltage Output Saturation Voltage Output Leakage Current Supply Current Output Rise Time Output Falling Time Switch Time Differential
SYMBOL
TEST CONDITIONS
VCE VCC=3.5V, IL=100mA
VCC
VCE(SAT) VCC=14V, IL=300mA
ICEX VCE=14V, VCC=14V
ICC VCC=20V, Output Open
tR VCC=14V, RL=820Ω, CL=20pF
tF VCC=14V, RL=820Ω, CL=20pF
∆t VCC=14V, RL=820Ω, CL=20pF
MIN TYP MAX UNIT 0.4 V
3.5 20 V 0.3 0.6 V <0.1 10 µA 16 25 mA 3.0 10 µS 0.3 1.5 µS 3.0 10 µS
MAGNETIC CHARACTERISTICS
Operate Point Release Point Hysteresis
PARAMETR
SYMBOL
BOP BRP BHYS
Ta= 25 MIN MAX
100 -100 5.