A3950SLP-T Allegro Microsystems Inc, A3950SLP-T Datasheet - Page 8

• Manufacturer Part Number: A3950SLP-T
• Description: IC MOTOR DRIVER PWM FULL 16-TSSO
• Manufacturer: Allegro Microsystems Inc

Specifications of A3950SLP-T

• Applications: PWM Motor Driver
• Number Of Outputs: 1
• Current - Output: ±2.8A
• Voltage - Supply: 8 V ~ 36 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• Operating Current: 8.5mA
• Operating Temperature Classification: Commercial
• Package Type: TSSOP EP
• Operating Supply Voltage (max): 36V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Load: -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 620-1064

A3950
NFAULT low, but does not disable the operation of the chip. If
the die temperature increases further, to approximately 175°C, the
full-bridge outputs will be disabled until the internal temperature
falls below a hysteresis of 15°C.
Overcurrent Protection. Referring to the figures below, the
voltage on the output pins relative to supply are monitored to
ensure that the motor lead is not shorted to supply or ground.
Shorted load condition, output current waveform is shown along with the NFAULT output.
NFAULT
Shorted load condition illustrating repetitive cycles with a 1.2 ms delay.
NFAULT
I
I
SHORT
SHORT
T
OCP
= 1.2 ms
DMOS Full-Bridge Motor Driver
Fault asserted
If a short is detected, the full-bridge outputs are turned off, flag
NFAULT is driven low, and a 1.2 ms fault timer is started.
After this 1.2 ms period, t
to follow the input commands and another turn-on is attempted.
If there is still a fault condition, the cycle repeats. If, after t
expires, it is determined that the short condition is not present, the
NFAULT pin is released and normal operation resumes.
Fault asserted
200 μs / div.
2 μs / div.
2 A / div.
2 A / div.
OCP
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
, the device will then be allowed
OCP
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