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HA17451, HA17451AFP, HA17451AFP-EL

Table of contents:
Info of HA17451
Info of HA17451AFP
Info of HA17451AFP-EL

HA17451, HA17451AFP, HA17451AFP-EL Selling Leads, Datasheet

MFG:HIT Package Cooled:DIP D/C:DIP

HA17451, HA17451AFP, HA17451AFP-EL Picture

HA17451, HA17451AFP, HA17451AFP-EL Datasheet download

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Part Number: HA17451

MFG: HIT

Package Cooled: DIP

D/C: DIP

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HA17451AFP General 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 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.

HA17451AFP Maximum Ratings

Item	Symbol	Rating	Unit	Notes
Power supply voltage	V_CC	40	V
Error amplifier input voltage	V_I	20	V
Collector output voltage	V_O	40	V
Collector output current	I_O	50	mA
Power dissipation	P_T	680	mW
Operating temperature	T_opr	- 20 to +85	°C
Storage temperature	T_stg	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.

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 current drain: 1.5 mA (typ)
· Operates at wide range of oscillator frequencies: f_OSC = 1 kHz to 300 kHz
· Dead time adjustable through full duty cycle range
· Surface-mount package (SOP16) for saving space (HA17451AFP)

HA17451AFP Connection Diagram

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