A4935KJP-T Allegro Microsystems Inc, A4935KJP-T Datasheet - Page 15

• Manufacturer Part Number: A4935KJP-T
• Description: IC MOSFET DRIVER 3PH AUTO 48LQFP
• Manufacturer: Allegro Microsystems Inc

Specifications of A4935KJP-T

• Configuration: 3 Phase Bridge
• Input Type: PWM
• Delay Time: 90ns
• Number Of Configurations: 1
• Number Of Outputs: 3
• Voltage - Supply: 5.5 V ~ 50 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 48-LFQFP Exposed Pad
• Device Type: Motor
• Module Configuration: 3-Phase Bridge
• Peak Output Current: 150mA
• Output Resistance: 8ohm
• Input Delay: 90ns
• Output Delay: 90ns
• Supply Voltage Range: 3V To 5.5V
• Driver Case Style: LQFP
• No. Of Pins: 48
• Operating Temperature Range: -40°C To +150°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Peak: -
• High Side Voltage - Max (bootstrap): -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

A4935
Figure 1. Fault flag sequence diagrams
FF1
FF2
FF1
FF1
FF2
FF2
V
UV fault detected FF1 and FF2 pulled up by resistor
DS
fault detected FF2 pulled up by resistor
AH
AH
External controller pulls FF2 low
External controller pulls FF2 low
1 bit on each falling edge of FF2
A4935 outputs fault register on FF1
A 4935 outputs fault register on FF1
1 bit on each falling edge of FF2
BH
BH
(C) Undervoltage Fault Register Read
Overtemperature Condition Present
(B) V
CH
CH
(A) Overtemperature Fault
DS
Automotive 3-Phase MOSFET Driver
Fault Register Read
AL
AL
VREG undervoltage
Phase A short-to-supply
BL
BL
CL
CL
VR
VR
A4935 pulls FF1 and FF2 low
A4935 pulls FF1 and FF2 low
and resets fault register
and resets fault register
VA
VA
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
VB
VB
VC
VC
15