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3953
FULL-BRIDGE PWM MOTOR DRIVER

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0755£­83283733, 83031813£¬33062500

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MSN£ºsumzi003@sumzi.com  sumzi006@sumzi.com

Email:sumzi@sumzi.com 

http://www.sumzi.com

Designed for bidirectional pulse-width modulated (PWM) current control
of inductive loads, the A3953S¡ª is capable of continuous output currents to
¡À1.3 A and operating voltages to 50 V. Internal fixed off-time PWM currentcontrol
circuitry can be used to regulate the maximum load current to a desired
value. The peak load current limit is set by the user¡¯s selection of an input
reference voltage and external sensing resistor. The fixed off-time pulse
duration is set by a user- selected external RC timing network. Internal circuit
protection includes thermal shutdown with hysteresis, transient-suppression
diodes, and crossover current protection. Special power-up sequencing is not
required.
With the ENABLE input held low, the PHASE input controls load current
polarity by selecting the appropriate source and sink driver pair. The MODE
input determines whether the PWM current-control circuitry operates in a slow
current-decay mode (only the selected source driver switching) or in a fast
current-decay mode (selected source and sink switching). A user-selectable
blanking window prevents false triggering of the PWM current-control
circuitry. With the ENABLE input held high, all output drivers are disabled.
A sleep mode is provided to reduce power consumption.
When a logic low is applied to the BRAKE input, the braking function is
enabled. This overrides ENABLE and PHASE to turn off both source drivers
and turn on both sink drivers. The brake function can be used to dynamically
brake brush dc motors.
The A3953S¡ª is supplied in a choice of two power packages; a 16-pin
dual-in-line plastic package with copper heat-sink tabs, and a 16-pin plastic
SOIC with copper heat-sink tabs. For both package styles, the power tab is at
ground potential and needs no electrical isolation. Each package type is
available in a lead (Pb) free version (100% matte tin plated leadframe).

FEATURES
¡ö ¡À1.3 A Continuous Output Current
¡ö 50 V Output Voltage Rating
¡ö 3 V to 5.5 V Logic Supply Voltage
¡ö Internal PWM Current Control
¡ö Saturated Sink Drivers (Below 1 A)
¡ö Fast and Slow Current-Decay Modes
¡ö Automotive Capable
¡ö Sleep (Low Current Consumption)
Mode
¡ö Internal Transient-
Suppression Diodes
¡ö Internal Thermal-
Shutdown Circuitry
¡ö Crossover-Current and
UVLO Protection

ABSOLUTE MAXIMUM RATINGS
Load Supply Voltage, VBB . . . . . . . . . . 50 V
Output Current, IOUT
(Continuous) . . . . . . . . . . . . . . ¡À1.3 A*
Logic Supply Voltage, VCC . . . . . . . . . 7.0 V
Logic/Reference Input Voltage Range,
VIN . . . . . . . . . . . -0.3 V to VCC + 0.3 V
Sense Voltage, VSENSE
(VCC = 5.0 V) . . . . . . . . . . . . . . . . 1.0 V
(VCC = 3.3 V) . . . . . . . . . . . . . . . . 0.4 V
Package Power Dissipation,
PD . . . . . . . . . . . . . . . . . . . . See Graph
Operating Temperature Range,
TA . . . . . . . . . . . . . . . . -20¡ãC to +85¡ãC
Junction Temperature, TJ . . . . . . . +150¡ãC†
Storage Temperature Range,
TS . . . . . . . . . . . . . . . -55¡ãC to +150¡ãC

UCN5804LBreplaced by A3977/A3967   UCN5801A   L6219DSTR   ATS674LSETN   ATS665LSG   ATS612LSB   ATS611LSB 
ACS750LCA-075   ACS712ELC-30A   ACS712ELC-20A   ACS712ELC-05A   ACS706ELC-05CACS704ELC-015  A8904SLB  A8430EEKTR-T  A6275SLWTR   A5348CA A3983SLP-T  A3980KLP-T  A3979SLP-T   A3977SLP  A3977SEDTR-TA3977SEDA3973SLBTR-T   A3972SB-T   A3972SB   A3968SLB-T  A3967SLBTR-T  A3967SLBTR   A3966SLBTR-T  A3966SLBTR  A3959SB replaced A3952A3955SLBTR-T  A3955SLB  A3955SB-T   A3936SED-T  A3936SED  A3932SEQA3517SUA   A3515EUA   A3425LL-T  A3425LK-T  A3422LKA-T   A3290XUAA3281LLTTR    A3281LLT   A3281LLHLT-T  A3280LUA£¨replaceA88L)   A3280LLTTRA3280LLHLT-T  A3280LLHLT  A3280EUA   A3280ELHLT  A3245LLHLT-TA3245ELHLT-T   A3240LUA-T  A3240LUA  A3240LLHLT-T   A3240EUA-TA3240ELHLT  A3213EUA-T  A3213EUA   A3213ELHLT-T   A3212ELHLTA3212EEHLT-T  A3212EEH  A3210ELHT£¨replacement by A3212 and A3213)A3210ELHLT   A3187LUA-T  A3187LLTTR-T  A3172XUA  

A3144LU replaced by A1104   A3144EU-T replaced by A1104

A3144EUA-T replaced by A1104  A3144EUA replaced by A1104 

A3144EU replaced by A1104  A3144ELT replaced by A1104

A3142LUA replaced by A1101  A3142LLT   A3141LUA£¨replaced by A1101)   A3141LUA  A3141EUA  A3141EU  A3121LU    A3121ELT  A3056LU  A3046LUA1321LUA-T  A1321LLHLT-T    A1302UA   A1302EUA-T   A1302EUA A1106EUA-T  A1106ELHLT-T  A1104EU-T  A1104EUA-T   A1102LUA-TA1102LLTTR-T  A1102LLHLT-T   A1101LUA (replace A3141LUA)   A1101LLHLT-TA1101EU-T   A1101EUA-T    A11011LLHLT-T   A3955SB   SKHMPSE010   AO4606AP5200   7C256-15JC  7C256-12JC  ACS712ELCTR-05B-T   ACS712ELCLU-05C-TA3977SLP-T   A3212EUA-T