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H211 Datasheet, PDF (1/9 Pages) Hi-Sincerity Mocroelectronics – 2 Phase DC Motor Drive IC
HI-SINCERITY
MICROELECTRONICS CORP.
H211 2 Phase DC Motor Drive IC
Spec. No. : IC200918
Issued Date : 2009.09.14
Revised Date : 2009.10.29
Page No. : 1/9
General Description
The H211, a one-chip composed of hall sensor and output coil drivers, applied to
2-phase brush-less DC motor. The device includes an on-chip Hall sensor for
magnetic sensing, an amplifier that amplifies the Hall voltage, a Schmitt trigger to provide switch hysteresis for noise
rejection, a temperature compensation circuit to compensate the temperature drift of Hall sensitivity, two
complementary open-collector drivers for sinking large load current. It also includes an internal band-gap regulator
which is used to provide bias voltage for internal circuits.
The high sensitivity of Hall Effect sensor is suitable for motors from mini-type CPU coolers to blowers and DC fans.
Typical operation current is 0.3A with wide range of operating voltage. FG single, an open collector, provides a square
waveform output for the detection of the motor speed.
Place the device in a variable magnetic field, while the magnetic flux density is larger than threshold BOP, NO will be
turned on (low) and SO (and FG) will be turned off (high). This output state is held till the magnetic flux density
reversal falls below BRP causing NO to be turned off (high) and SO (and FG) turned on(low).
Features
․ On-chip Hall Sensor/Drivers
․ 4V to 20V Supply Voltage
․ Output Sink Current up to 0.4A
․ Low Quiescent Supply Current under 5mA
․ Built-in FG Output
․ Low Profile TO-94 (SIP-4L) Package
Typical Application Circuit
C1, C2, R2, R3 is optional for reduce electromagnetism noise. R2, R3 must be greater than 50 ohm.
Fig.2 H211 Typical Application Circuit
H211
HSMC Product Specification