A3940KLP

Series: -
Type: -
On-State Resistance: -
Current - Output / Channel: -
Current - Peak Output: -
High Side Voltage - Max (Bootstrap): -
Mounting Type: Surface Mount
Packaging: Tube
Number of Configurations: 1
Input Type: Non-Inverting
Number of Outputs: 4
Manufacturer: Allegro Microsystems Inc
Configuration: H Bridge
Package / Case: 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
Supplier Device Package: 28-TSSOP Exposed Pad
Delay Time: 225ns
Current - Peak: 700mA
Voltage - Supply: 7 V ~ 40 V
Operating Temperature: -40°C ~ 135°C


Features:

Drives wide range of  n-channel MOSFETs
Charge pump to boost gate drive at low-battery-input conditions
Bootstrapped gate drive with charge pump for 100% duty cycle
Synchronous rectification
Fault diagnostic output
Adjustable dead-time cross-conduction protection
Motor lead short-to-battery and short-to-ground protection
Undervoltage/overvoltage protection
-40°C to +150°C, TJ  operation
Thermal shutdown


Pinout




Description

The A3940KLP and A3940KLW are designed specifically for automotive applications that require high-power motors.  Each provides four high-current gate drive outputs capable of driving a wide range of n-channel power MOSFETs in a full-bridge configuration.

Bootstrap capacitors are utilized to provide the above-battery supply voltage required for n-channel FETs.  An internal charge pump for the high side allows for dc (100% duty cycle) operation of the bridge.

Protection features of A3940KLP include supply under/overvoltage, thermal shutdown, and motor lead short-to-battery and short-to-ground fault notification, and a programmable dead-time adjustment for cross- conduction prevention.  The overvoltage trip point is user adjustable.

The A3940 is supplied in a choice of two power packages, a 28- lead TSSOP with an exposed thermal pad (suffix LP), and a 28-lead wide-body SOIC (suffix LW).

Parameters:

Technical/Catalog Information	A3940KLP
Vendor	Allegro Microsystems Inc
Category	Integrated Circuits (ICs)
Configuration	H Bridge
Voltage - Supply	7 V ~ 40 V
Current - Peak	700mA
Delay Time	225ns
Package / Case	28-TSSOP
Packaging	Tube
Number of Outputs	4
Input Type	Non-Inverting
Number of Configurations	1
Operating Temperature	-40°C ~ 135°C
High Side Voltage - Max (Bootstrap)	-
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	A3940KLP A3940KLP