HT7465 Ver la hoja de datos (PDF) - Holtek Semiconductor

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componentes Descripción

Fabricante

HT7465

2A Step-Down DC to DC Converter

Holtek Semiconductor 

HT7465

Electrical Characteristics

VIN=12V, Ta=25°C, unless otherwise specified refer to circuit of Figure 1. ( note 1)

Symbol

Parameter

Test Condition Min. Typ. Max. Unit

VFB

Feedback Voltage

4.75V ≤ VIN ≤ 24V 0.892 0.920 0.948

V

VUVLO Under Voltage Lockout Threshold

—

—

4.1

—

V

—

Under Voltage Lockout Threshold Hysteresis

—

—

200

—

mV

IQ

ISS

FOSC

—

DMAX

ISW

RDS

Quiescent Current

Shutdown Supply Current

Oscillator Frequency

Short Circuit Frequency

Maximum Duty Cycle

Upper Switch Leakage

Switch On Resistance (note 2)

VFB=1.2V, VEN=High

—

VEN=0V

—

—

—

VFB=0V

—

VFB=0.6V

—

VEN=0V, VSW=0V

—

IOUT=2A

—

1.1

1.3

mA

20

30

mA

380

—

kHz

240

—

kHz

90

—

%

0

10

mA

0.18

—

W

ILIMIT

Current Limit

—

—

3.4

—

A

—

Error Amplifier Voltage Gain (note 2)

—

—

70

—

dB

—

Error Amplifier Trans-conductance (note 2)

—

—

800

—

mA/V

VEN

Enable Threshold

4.75V ≤ VIN ≤ 24V

0.7

1.0

1.3

V

TJ

Thermal Shutdown

—

—

150

—

°C

Note: 1. Specifications are production tested at Ta=room temperature. Specifications over the -40°C to 85°C

operating temperature range are assured by design, characterization and correlation with Statistical

Quality Controls (SQC).

2. Designer test specifications.

Rev. 1.00

4

September 02, 2011

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