39-34-8163, 3935, 39-35-2146 Selling Leads, Datasheet
MFG:Molex Package Cooled:FAIRCHILD D/C:2010+
39-34-8163, 3935, 39-35-2146 Datasheet download
Part Number: 39-34-8163
MFG: Molex
Package Cooled: FAIRCHILD
D/C: 2010+
39-34-8163, 3935, 39-35-2146
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Info of 39-34-8163
Info of 3935
Info of 39-35-2146
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About 3935
PDF/DataSheet Download
Datasheet: 3935
File Size: 324851 KB
Manufacturer: ALLEGRO [Allegro MicroSystems]
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About
PDF/DataSheet Download
Datasheet:
File Size: KB
Manufacturer:
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3935 Maximum Ratings
Load Supply Voltages, VBAT, VDRAIN,
VBOOST, BOOSTD ............... -0.6 V to 40 V
Output Voltage Ranges,
GHA/GHB/GHC, VGHX .............. -4 V to 55 V
SA/SB/SC, VSX ........................ -4 V to 40 V
GLA/GLB/GLC, VGLX ................ -4 V to 16 V
CA/CB/CC, VCX .................... -0.6 V to 55 V
Sense Circuit Voltages,
CSP,CSN, LSS......................... -4 V to 6.5 V
Logic Supply Voltage,
VDD ............................ -0.3 V to +6.5 V
Logic Input/Outputs and OVSET, BOOSTS,
CSOUT, VDSTH ......... ........ -0.3 V to 6.5 V
Operating Temperature Range,
TA ........................... -40°C to +135°C
Junction Temperature, TJ ........... +150°C
Storage Temperature Range,
TS ........................... -55°C to +150°C
3935 Features
Drives wide range of n-channel MOSFETs in 3-phase bridges
PFM boost converter for use with low-voltage battery supplies
Internal LDO regulator for gate-driver supply
Bootstrap circuits for high-side gate drivers
Current monitor output
Adjustable battery overvoltage detection.
Diagnostic outputs
Motor lead short-to-battery, short-to-ground, and bridge-open protection
Undervoltage protection
-40 °C to +150 °C, TJ operation
Thermal shutdown
3935 Typical Application
The A3935 is designed specifically for automotive applications that require high-power motors. Each provides six high-current gate drive outputs capable of driving a wide range of n-channel power MOSFETs.
A requirement of automotive systems is steady operation over a varying battery input range. The A3935 integrates a pulse-frequency modulated boost converter to create a constant supply voltage for driving the external MOSFETs. Bootstrap capacitors are utilized to provide the above battery supply voltage required for n-channel FETs.
Direct control of each gate output is possible via six TTL-compat-ble inputs. A differential amplifier is integrated to allow accurate measurement of the current in the three-phase bridge.
Diagnostic outputs can be continuously monitored to protect the driver from short-to-battery, short-to-supply, bridge-open, and battery under/overvoltage conditions. Additional protection features include dead-time, VDD undervoltage, and thermal shutdown.
The A3935 is supplied in a choice of three packages, a 44-lead PLCC with copper batwing tabs (suffix ED), a 48-lead low profile QFP with exposed thermal pad (suffix JP), and a 36-lead 0.8 mm pitch SOIC (suffix LQ).
3935 Connection Diagram
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