LMD18245T

power amplifier, ZIP-15, +60V, 3A, Low RDS(ON), Low-loss current, Overcurrent protection

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Price:: US $7.50~9.00 / piece [Get Latest Price]

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	US $7.50~9.00

PartNumber:: LMD18245T

Brand:: National Semiconductor - NS | Pack: ZIP | D/C: 08+

Availability:: Supply Ability: 10000/Week Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

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Products Upload time: 2011-12-02

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Part Number:LMD18245T
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Product Summary

The LMD18245T full-bridge power amplifier incorporates all the circuit blocks required to drive and control current in a brushed type DC motor or one phase of a bipolar stepper motor. The multi-technology process used to build the device combines bipolar and CMOS control and protection circuitry with DMOS power switches on the same monolithic structure. The LMD18245T controls the motor current via a fixed off-time chopper technique. An all DMOS H-bridge power stage delivers continuous output currents up to 3A (6A peak) at supply voltages up to 55V. The DMOS power switches feature low RDS(ON) for high efficiency, and a diode intrinsic to the DMOS body structure eliminates the discrete diodes typically required to clamp bipolar power stages. The applications of the LMD18245T include Full, half and microstep stepper motor drives, Stepper motor and brushed DC motor servo drives, Automated factory, medical and office equipment.

Parametrics

LMD18245T absolute maximum ratings: (1)DC Voltage at: OUT 1, VCC, and OUT 2: +60V, COMP OUT, RC, M4, M3, M2, M1, BRAKE, DIRECTION, CS OUT, and DAC REF: +12V; (2)DC Voltage PGND to SGND: ±400mV; (3)Continuous Load Current: 3A; (4)Peak Load Current: 6A; (5)Junction Temperature (TJ(max)): +150℃; (6)Power Dissipation: TO-220 (TA = 25℃, Infinite Heatsink): 25W, TO-220 (TA = 25℃, Free Air): 3.5W; (7)ESD Susceptibility: 1500V; (8)Storage Temperature Range (TS): -40℃ to +150℃; (9)Lead Temperature (Soldering, 10 seconds): 300℃.

Features

LMD18245T features: (1)DMOS power stage rated at 55V and 3A continuous; (2)Low RDS(ON) of typically 0.3W per power switch; (3)Internal clamp diodes; (4)Low-loss current sensing method; (5)Digital or analog control of motor current; (6)TTL and CMOS compatible inputs; (7)Thermal shutdown (outputs off) at TJ = 155℃; (8)Overcurrent protection; (9)No shoot-through currents; (10)15-lead TO-220 molded power package.