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| SH177 Single Output Elektronische Bauelemente RoHS Compliant Product Hall Effect Latch IC Description The SH177 is an integrated Hall effect latched sensor with output pull-high resistor driver designed for electronic commutation of brushless DC motor applications and contactless switches. The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that amplifies the Hall voltage, and a Schmitt trigger to provide switching hysteresis for noise rejection, and output driver with pull-high resistor. An internal bandgap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range. If a magnetic flux density larger than threshold Bop, DO is turned on (low). The output state is held until a magnetic flux density reversal falls below Brp causing DO to be turned off (high). o SH177 is rated for operation over temperature range from -20 C o to 100 C and voltage range from 3.5V to 28V. The devices are available in low cost die forms or rugged 3 pin SIP packages. Features * Internal Bandgap Regulator Allows Temperature Compensated REF. A A1 b b1 Millimeter Min. 1.245 Max. 1.753 REF. D E L e Millimeter Min. 3.962 2.870 13.60 Max. 4.216 3.124 15.60 Operations And A Wide Operating Voltage Range * Build In Protection Diode For Chip Reverse Power Connecting 0.750REF. 0.330 0.406 0.432 0.508 * TTL and MOS ICs Directly Drivable By Output * Wide Range Of Supply Voltage: 3.5V to 28V * High Sensitivity With A Small Magnet 1.27 REF. Applications * Rotation Sensors * Speed Measurement * Keyboard Switches * Brushless DC Fan * Position Sensors * Microswitches * Brushless DC Motor * Revolution Counting Pin Descriptions Name Vcc Vss DO P/I/O P P O Pin# 1 2 3 Description Positive power supply Ground Digital output http://www.SeCoSGmbH.com/ Any changing of specification will not be informed individual 01-Jun-2002 Rev. A Page 1 of 5 SH177 Elektronische Bauelemente Single Output Hall Effect Latch IC Function Block Diagrams VCC 1 VCC 1 REG. 27K L 3 OUTPUT(DO) HALL SENSOR 2 Vss Absolute Maximum Ratings at Ta= 25 C Parameter Supply Voltage Reverse VCC Polarity Voltage Magnetic Flux Density Output OFF Voltage Output ON Current Operating Temperature Range Storage Temperature Range Package Power Dissipation Max. Junction Temperature o Symbol VCC VRCC B VCE IC Continuous TA TS PD Tj Value 28 -28 Unlimited 35 25 -20~100 -65~150 250 Unit V V V mA o o C C C mW o 175 Electrical Characteristics Ta=25 C Parameter Symbol Test Conditions Min Typ. Max. Unit o Supply Voltage Low output voltage High output voltage Output Leakage Current Output Short-circuit Current Supply Current Output Rise Time Output Falling Time VCC VOL VOH ICEX -IOS ICC tr tf VCC=16V,Io=12mA,B=130 Gauss VCC=3.6V,Io=12mA,B=130 Gauss VCC=16V, Io=-30 A,B=-130 Gauss VCC=3.6V,Io=-30 A,B=-130 Gauss VCC=16V,Vcc=16V VCC=16V,Vo=0V,B=-130 Gauss VCC=24V,Output Open VCC=16V,RL=820 CL=20pf VCC=16V,RL=820 CL=20pf 3.5 14.6 2.2 0.4 - <0.1 5 0.3 0.3 28 0.4 0.4 10 0.9 10 1.5 1.5 V V V V V uA mA mA us us http://www.SeCoSGmbH.com/ Any changing of specification will not be informed individual 01-Jun-2002 Rev. A Page 2 of 5 ... 16V RL RL=820 Ohm CL=20 pF SH177 Single Output Hall Effect Latch IC Elektronische Bauelemente Test Circuit Vout(DO) Power dissipation VS. Environment Temperature Ta( : ) 25 50 60 70 80 85 90 95 100 105 110 115 Pd(mW) 275 262 257 252 242 237 232 227 222 212 202 192 P d (m W ) 300 250 200 150 100 0 25 50 75 T a ( C ) 100 P o w e r D is s ip a t io n C u r v e CL 125 182 125 150 Electrical Characteristics Curves O O -- O O O oeO... oeO... Icc v.s Vcc at Different Temp oe o O oe oo oe oe oe h tp://www.SeCoSGmbH.com/ Current capacity vs. supply voltage for DO pin Any changing of specification will not be informed individual 01-Jun-2002 Rev. A Page 3 of 5 SH177 Elektronische Bauelemente Single Output Hall Effect Latch IC Magnetic Characteristics Characteristic BIN A Operate Point BIN B BIN C BIN A Release Point BIN B BIN C BIN A Hysteresis BIN B BIN C Symbol Bop Bop Bop Brp Brp Brp Bhys Bhys Bhys Min 0 -70 -100 -130 40 50 60 Ta=+25 : Max 70 100 130 0 110 150 160 Ta=-0 : to +70 : Min 0 -70 -100 -130 20 30 40 Max 70 100 130 0 140 200 220 Unit Gauss Gauss Gauss Gauss Gauss Gauss Gauss Gauss Gauss Hysteresis Characteristics Bin A DO Output Voltage in Volts 12 10 8 6 4 RP -200 -100 0 2 100 ON 200 OFF OP Magnetic Flux Density in Gauss Bin B DO Output Voltage in Volts 12 10 8 6 4 RP -200 http://www.SeCoSGmbH.com/ OFF OP 2 -100 0 100 ON 200 Any changing of specification will not be informed individual Magnetic Flux Density in Gauss 01-Jun-2002 Rev. A Page 4 of 5 SH177 Elektronische Bauelemente Single Output Hall Effect Latch IC Bin C DO Output Voltage in Volts OFF 12 10 8 6 4 OP RP -200 -100 0 2 100 ON 200 Magnetic Flux Density in Gauss Package Information Active Area Depth 0.51mm NOM Package Sensor Location Max:2.13mm Min:1.87mm Max:1.53mm Min:1.27mm BRANDED SURFACE 1 2 3 http://www.SeCoSGmbH.com/ Any changing of specification will not be informed individual 01-Jun-2002 Rev. A Page 5 of 5 |
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