A3936SED-T

A3936SED-T Datasheet

Designed for pulse-width modulated PWM current control of threephase brushless dc motors, the A3936SED is capable of peak output currents to ± 3 A and operating voltages to 50 V. Internal fixed off-time PWM currentcontrol timing circuitry can be configured to operate in slow-, fast- and mixeddecay modes.

Part	Datasheet
A3936SED-T	A3936SED-T (pdf)

Related Parts	Information
A3936SED	A3936SED

PDF Datasheet Preview
3936 DMOS THREE-PHASE PWM MOTOR DRIVER ABSOLUTE MAXIMUM RATINGS at TA = +25°C Load Supply Voltage, VBB 50 V Output Current, IOUT................................... ±3 A* Logic Supply Voltage, VDD......................... V Logic Input Voltage Range, VIN tW>30 ns V to VDD + V tW<30 ns -1.0V to VDD +1V Sense Voltage, VSENSE................................. V Reference Voltage, VREF VDD Package Power Dissipation, PD W Operating Temperature Range, TA -20°C to +85°C Junction Temperature, TJ +150°C Storage Temperature Range, TS............................... -55°C to +150°C * Output current rating may be limited by duty cycle, ambient temperature, and heat sinking. Under any set of conditions, do not exceed the specified current rating or a junction temperature of 150°C. Designed for pulse-width modulated PWM current control of threephase brushless dc motors, the A3936SED is capable of peak output currents to ± 3 A and operating voltages to 50 V. Internal fixed off-time PWM currentcontrol timing circuitry can be configured to operate in slow-, fast- and mixeddecay modes. Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation. Internal circuit protection includes thermal shutdown with hysteresis, and crossover current protection. Special power up sequencing is not required. The A3936 is supplied in a 44-pin plastic PLCC with internally fused leads three on each side for enhanced heat dissipation. These leads are at ground potential and need no electrical isolation. This device is also available in a lead Pb free version, with 100% matte tin leadframe plating. Features ±3 A, 50 V Continuous Output Rating Low rDS on Outputs typically 500 mΩ source, 315 mΩ sink Configurable Mixed, Fast and Slow Current-Decay Modes Synchronous Rectification for Low Power Dissipation Internal UVLO and Thermal Shutdown Circuitry Crossover-Current Protection Tachometer Output for External Speed Control Loop Always order by complete part number Package A3936SED 44-pin PLCC A3936SED-T 44-pin PLCC, Pb-free 3936 Three Phase PWM Motor Driver FUNCTIONAL BLOCK DIAGRAM .22uf/100V .22uf/50V VREG CP2 CP1 .22uf/50V TACH HBIAS HALL HAHA+ HBHB+ HCHC+ Comm Logic SLEEP DIR EXTMODE BRAKE SR ENABLE REGULATOR CHARGE PUMP BANDGAP VREG VCP OVERVOLTAGE UNDERVOLTAGE AND FAULT DETECT Control Logic GATE DRIVE ZERO CURRENT DETECT VDD OSC BLANK PFD1 PFD2

PDF Datasheet Preview

3936

DMOS THREE-PHASE PWM MOTOR DRIVER

ABSOLUTE MAXIMUM RATINGS at TA = +25°C

Load Supply Voltage, VBB 50 V Output Current, IOUT................................... ±3 A* Logic Supply Voltage, VDD......................... V Logic Input Voltage Range, VIN
tW>30 ns V to VDD + V tW<30 ns -1.0V to VDD +1V Sense Voltage, VSENSE................................. V Reference Voltage, VREF VDD Package Power Dissipation,

PD W Operating Temperature Range,

TA -20°C to +85°C Junction Temperature, TJ +150°C Storage Temperature Range,

TS............................... -55°C to +150°C
* Output current rating may be limited by duty cycle, ambient temperature, and heat sinking. Under any set of conditions, do not exceed the specified current rating or a junction temperature of 150°C.

Designed for pulse-width modulated PWM current control of threephase brushless dc motors, the A3936SED is capable of peak output currents to ± 3 A and operating voltages to 50 V. Internal fixed off-time PWM currentcontrol timing circuitry can be configured to operate in slow-, fast- and mixeddecay modes.

Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation.

Internal circuit protection includes thermal shutdown with hysteresis, and crossover current protection. Special power up sequencing is not required.

The A3936 is supplied in a 44-pin plastic PLCC with internally fused leads three on each side for enhanced heat dissipation. These leads are at ground potential and need no electrical isolation. This device is also available in a lead Pb free version, with 100% matte tin leadframe plating.

Features ±3 A, 50 V Continuous Output Rating Low rDS on Outputs typically 500 mΩ source, 315 mΩ sink Configurable Mixed, Fast and Slow Current-Decay Modes Synchronous Rectification for Low Power Dissipation Internal UVLO and Thermal Shutdown Circuitry Crossover-Current Protection Tachometer Output for External Speed Control Loop

Always order by complete part number

Package

A3936SED
44-pin PLCC

A3936SED-T
44-pin PLCC, Pb-free
3936 Three Phase PWM Motor Driver

FUNCTIONAL BLOCK DIAGRAM
.22uf/100V
.22uf/50V VREG CP2 CP1 .22uf/50V

TACH HBIAS

HALL

HAHA+ HBHB+ HCHC+

Comm Logic

SLEEP DIR

EXTMODE BRAKE SR

ENABLE

REGULATOR

CHARGE PUMP

BANDGAP VREG VCP

OVERVOLTAGE UNDERVOLTAGE

AND FAULT DETECT

Control Logic

GATE DRIVE

ZERO CURRENT DETECT

VDD OSC

BLANK PFD1 PFD2

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Datasheet ID: A3936SED-T 516026