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L9909

PinoutSpecifications Symbol Parameter Value Unit VCC DC battery supply voltage -0.3 to 55 V VCC_t Transient battery supply voltage (Figs. 4 and 5) -0.3 to VCC_CL (*) V Vin Voltage at VCOM and VFB pins -0.3 to VCC +0.3 V VROSC Voltage AT ROSC pin -0.3 to 7 V VCOSC...

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SeekIC No. : 004389674 Detail

L9909: PinoutSpecifications Symbol Parameter Value Unit VCC DC battery supply voltage -0.3 to 55 V VCC_t Transient battery supply voltage (Figs. 4 and 5) -0.3 to VCC_CL (*) V Vin Vo...

L9909 Data Sheet

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Part Number:
L9909
Supply Ability:
5000

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Product Details

Description



Pinout

Connection Diagram


Specifications

Symbol Parameter Value Unit
VCC DC battery supply voltage -0.3 to 55 V
VCC_t Transient battery supply voltage (Figs. 4 and 5) -0.3 to VCC_CL (*) V
Vin Voltage at VCOM and VFB pins -0.3 to VCC +0.3 V
VROSC Voltage AT ROSC pin -0.3 to 7 V
VCOSC Voltage at COSC pin for VCC >16V -0.3 to16 V

Voltage at COSC pin for VCC >16V

 -0.3 to VCC +0.3 V
ICC Current at VCC GND, M+ and M- ±1.9 A
ICC_t Transient Current at VCC GND (figs. 4 and 5) ±4 A
Isig Current at VFB, VCOM, COSC and ROSC ±10 mA
Pd Device Power Dissipation internally limited W
Tj Junction Temperature -40 to 150 °C
Tstg Storage and Junction Temperature -55 to 150 °C
VESD ESD Voltage Level (Human body Model - MIL STD883C) ±2000 V

(*) NOTE: SELF PROTECTING
Stressed above those listed under"Absolute Maximum Ratings" may cause permanent damage to the device . This is a stress rating anly and functional operation of the device at any conditionabove those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.


Description

The output current at ROSC pin is mirrored to COSC pin with a proper direction according to its voltage slope.

The L9909 wave form at COSC pin, being compared with a threshold, defines the PWMduty cycle at the motor driver outputM+ and M-. The oscillator also supplies the time base for the switch off and switch on delays and the Time Out Counter.

The typical oscillator period is: Tosc = 7.04 x Rosc x Cosc




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