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L6238 Arkusz danych(PDF) 4 Page - STMicroelectronics |
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L6238 Arkusz danych(HTML) 4 Page - STMicroelectronics |
4 / 35 page ELECTRICAL CHARACTERISTICS (Refer to the test circuit, unless otherwise specified.) Symbol Parameter Test Condition Min. Typ. Max. Unit POWER SECTION VPower Motor Supply 10.5 12 13.5 V RDS(on) Output ON Resistance Tj =25 °C Tj = 125 °C 0.25 0.33 0.50 Ω Ω Io(leak) Output Leakage Current 1 mA VF Body Diode Forward Drop Im = 2.0A 1.5 V dVo/dt Output Slew Rate Rslew = 100K Ω 0.30 V/ µs Im(max) Motor Current Limit (Note 1) Rs = 0.33 Ω Ilim Gain = 0 Ilim Gain = 1 TBD TBD 0.75 0.38 TBD TBD A/V A/V Igt Gate Drive for Ext. Power DMOS ILIMSET =5V Ilim Gain = 0 V33 = 0V, V38 = 5V 5mA Tsd Shut Down Temperature 150 180 °C Thys Recovery Temperature Hysteresis 30 °C Tew Early Warning Temperature Tsd-25 °C Isnsin Current Sense Amp Input Bias Current 10 µA GV Current Sense Amp Voltage Gain 3.8 4 4.2 V/V ZinCT Center Tap Input Impedance 30 K Ω PIN FUNCTIONS (continued) N. Name I/O Function 23 RUN/BRAKE I Rising edge will initiate start-up. A Braking rountine is started when this input is brought low. 24 SEQ INCREMENT I A low to high transition on this pin increments the Output State Sequencer. 25 SYSTEM CLK I Clock Frequency for the system timer/counters. 26 EXT INDEX I External Source of Feedback for the PLL. 27 PLL Fref I Reference Frequency for the PLL. 28 LOCK O High when the PLL is phase_locked. 30 Vlogic I Logic power supply. 31 DETECTOR OUT O Output of Frequency/Phase Detector. 32 FILTER IN I Filter Input. 33 FILTER COMP O Filter output and compensation. 34 CSA INPUT I Input to the Current Sense Amplifier. 35 Rsense O Output C connection for the Motor Current Sense Resistor to ground. 36 OUTPUT C I/O DMOS Half Bridge Output and Input C for Bemf sensing. 37 gm COMP I A series RC network to ground that defines the compensation of the Transconductance Loop. 38 GATE DRIVE I/O Drives the Gate of the External P Channel DMOS Driver for Higher Power Applications. This pin must be grounded if an external driver is not used. 41 I LIMIT SET I A voltage applied to this pin, in conjunction with the value for the external Motor Current Sensing resistor, defines the maximum Motor Current. 43 CENTER TAP I Motor Center Tap used for differential BEMF sensing. If the center tap of the Motor is not brought out, a virtual center tap is integrated and available at this pin. 44 SLEW RATE I A resistor connected to this pin sets the Voltage Slew Rate of the Output Drivers. L6238 4/35 |
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Podobny opis - L6238 |
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