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Features

  • 1A MOSFET gate driver
  • 90µA typical start-up current, 125µA maximum
  • 35ns propagation delay from current sense to output
  • Fast transient response with peak current mode control
  • 9V to 13.2V operation
  • Adjustable switching frequency to 1MHz
  • 35ns rise time and 29ns fall time with 1nF output load
  • Trimmed timing capacitor discharge current for accurate dead time/maximum duty cycle control
  • 1.5MHz bandwidth error amplifier
  • Tight tolerance voltage reference over line, load, and temperature
  • ±3% current limit threshold
  • Ni/Pd/Au-Ag lead finish (Tin (Sn) free)
  • Characterized radiation levels
  • Low Dose Rate (LDR) (0.01rad(Si)/s): 30krad(Si)
  • Single-event burnout LET 43MeV•cm2/mg

Description

The ISL71043M is a PWM controller suitable for a wide range of power conversion applications, including boost, flyback, and isolated output configurations. Its fast signal propagation and output switching characteristics make this an ideal product for existing and new designs. Features include up to 13.2V operation, 2.9mA operating current, 90μA typical start-up current, adjustable operating frequency to 1MHz, and 1A current drive capability with 35ns rise and 29ns fall times. The ISL71043M is offered in either an 8 Ld SOIC or 8 Ld TDFN package, and both are specified across the extended temperature range of -55°C to +125°C.

Parameters

AttributesValue
RatingSpace
Control ModePeak Current Mode, Voltage, Voltage, Peak Current Mode
Phases (Max)1
No-Load Operating Current2.9, 2.9 mA
Quiescent Current90µA
Supply Voltage (min) (V)9 - 9
Supply Voltage (max) (V)13.2 - 13.2
Switching Frequency (min) (kHz)2
Switching Frequency (max) (kHz)1000
TopologyBoost, Buck, Flyback, Forward, Buck, Boost, Flyback, Forward
VREF (V)5
Temp. Range (°C)-55 to +125°C
TID LDR (krad(Si))30, 50
DSEE (MeV·cm2/mg)43
FlowRT Plastic
Qualification LevelRadiation Tolerant Plastic
Die Sale Availability?No
PROTO Availability?No

Package Options

Pkg. TypePkg. Dimensions (mm)Lead Count (#)Pitch (mm)
SOICN4.9 x 3.9 x 1.4781.3
TDFN4.0 x 4.0 x 0.7580.8

Applications

  • Current mode switching power supplies
  • Isolated buck and flyback regulators
  • Boost regulators
  • Direction and speed control in motors
  • Control of high current FET drivers
Part NumberStatusSamplesStockRoHSPackageLead Count (#)Carrier TypeMoisture Sensitivity Level (MSL)Pitch (mm)Pkg. Dimensions (mm)Pb (Lead) FreePb Free CategoryMOQCAGE code
ISL71043M30BZActiveAvailableOut of StockContactSOICN8#Tube11.3mm4.9 x 3.9 x 1.47YesNickel/Palladium/Gold-Silver - e425
ISL71043M30BZ-TActiveN/AOut of StockContactSOICN8#Reel11.3mm4.9 x 3.9 x 1.47YesNickel/Palladium/Gold-Silver - e41000
ISL71043M30BZ-T7AActiveN/AOut of StockContactSOICN8#Reel11.3mm4.9 x 3.9 x 1.47YesNickel/Palladium/Gold-Silver - e4250
ISL71043M50BZActiveN/AOut of StockContactSOICN8#Tube11.3mm4.9 x 3.9 x 1.47YesNickel/Palladium/Gold-Silver - e425
ISL71043M50BZ-TActiveN/AOut of StockContactSOICN8#Reel11.3mm4.9 x 3.9 x 1.47YesNickel/Palladium/Gold-Silver - e41000
ISL71043M50BZ-T7AActiveN/AOut of StockContactSOICN8#Reel11.3mm4.9 x 3.9 x 1.47YesNickel/Palladium/Gold-Silver - e4250
ISL71043MBZActiveN/AIn StockRoHS:EN
SOICN8#Tube11.3mm4.9 x 3.9 x 1.47YesNickel/Palladium/Gold-Silver - e4100034371
ISL71043MBZ-TActiveN/AOut of StockRoHS:EN
SOICN8#Reel11.3mm4.9 x 3.9 x 1.47YesNickel/Palladium/Gold-Silver - e4100034371
ISL71043MBZ-T7AActiveN/AIn StockRoHS:EN
SOICN8#Reel11.3mm4.9 x 3.9 x 1.47YesNickel/Palladium/Gold-Silver - e4100034371
ISL71043MRTZActiveN/AIn StockRoHS:EN
TDFN8#Tube10.8mm4.0 x 4.0 x 0.75YesNickel/Palladium/Gold-Silver - e4100034371
ISL71043MRTZ-TActiveN/AOut of StockRoHS:EN
TDFN8#Reel10.8mm4.0 x 4.0 x 0.75YesNickel/Palladium/Gold-Silver - e4100034371
ISL71043MRTZ-T7AActiveN/AOut of StockRoHS:EN
TDFN8#Reel10.8mm4.0 x 4.0 x 0.75YesNickel/Palladium/Gold-Silver - e4100034371

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Support Communities

  1. Failure rate of components

    Hi, could you please provide the the activation energy (Ea), failure in time (FIT) rate, the temperature at which these test were published, the confidence level (CL) and the Antifuse FIT if available/applicable for these components: ISL71043MBZ, ISL7144450VZ, ISL71010BMB25Z, ISL71030MNZ. Could also please confirm that these components qualify ...

    Aug 29, 2024
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