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HA17451AFP

Features: · Low dropout voltage of on-chip 2.5V voltage reference: Vdrop = 0.2 V (typ)· Operates throughout wide supply voltagerange: 3.3 V to 40 V· Large maximum output current: 50 mA (max)· Undervoltage lockout circuit High threshold voltage: 3.15 V (typ) Low threshold voltage: 2.98 V (typ)· Low...

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SeekIC No. : 004358191 Detail

HA17451AFP: Features: · Low dropout voltage of on-chip 2.5V voltage reference: Vdrop = 0.2 V (typ)· Operates throughout wide supply voltagerange: 3.3 V to 40 V· Large maximum output current: 50 mA (max)· Underv...

HA17451AFP Data Sheet

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Part Number:
HA17451AFP
Supply Ability:
5000

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  • 1~5000
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  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

·  Low dropout voltage of on-chip 2.5V voltage reference: Vdrop = 0.2 V (typ)
·  Operates throughout wide supply voltagerange: 3.3 V to 40 V
·  Large maximum output current: 50 mA (max)
·  Undervoltage lockout circuit
     High threshold voltage: 3.15 V (typ)
     Low threshold voltage: 2.98 V (typ)
·  Low current drain: 1.5 mA (typ)
·  Operates at wide range of oscillator frequencies: fOSC = 1 kHz to 300 kHz
·  Dead time adjustable through full duty cycle range
·  Surface-mount package (SOP16) for saving space (HA17451AFP)


Pinout

Connection Diagram


Specifications

Item Symbol Rating Unit Notes
Power supply voltage VCC 40 V
Error amplifier input voltage VI 20 V
Collector output voltage VO 40 V
Collector output current IO 50 mA
Power dissipation PT 680 mW
Operating temperature Topr - 20 to +85 °C
Storage temperature Tstg 55 to +125 °C  
Note: This value applies to the HA17451AP at ambient temperatures up to Ta = 45°C. Derate by8.3 mW/°C above that point.


Description

The HA17451 is a dual-channel switching regulator controller IC. Each channel contains the basic circuits for controlling a PWM-type switching-regulator power supply. Both channels are integrated onto the same chip. Both channels can be completely synchronized, using the same oscillator output waveform. Each channel can provide output voltages for step-up, step-down, inverting, and other converter topologies.


These HA17451AFP controllers operate at voltages from 3.3 V to 40 V, making them suitable for a wide range of applications. They are ideal for chopper-type DC/DC converters. They are similar to the TL1451, but note that the HA17451A differs from the TL1451A.




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