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HT7465 Datasheet(PDF) 4 Page - Holtek Semiconductor Inc

No. de pieza HT7465
Descripción Electrónicos  2A Step-Down DC to DC Converter
PDF  11 Pages
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Fabricante Electrónico  HOLTEK [Holtek Semiconductor Inc]
Página de inicio  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT7465 Datasheet(HTML) 4 Page - Holtek Semiconductor Inc

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Rev. 1.00
4
September 02, 2011
HT7465
Electrical Characteristics
VIN=12V,Ta=25°C,unlessotherwisespecifiedrefertocircuitofFigure1.( 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
Quiescent Current
VFB=1.2V, VEN=High
—
1.1
1.3
mA
ISS
Shutdown Supply Current
VEN=0V
—
20
30
m
A
FOSC
Oscillator Frequency
—
—
380
—
kHz
—
Short Circuit Frequency
VFB=0V
—
240
—
kHz
DMAX
Maximum Duty Cycle
VFB=0.6V
—
90
—
%
ISW
Upper Switch Leakage
VEN=0V, VSW=0V
—
0
10
m
A
RDS
Switch On Resistance (note 2)
IOUT=2A
—
0.18
—
W
ILIMIT
Current Limit
—
—
3.4
—
A
—
Error Amplifier Voltage Gain (note 2)
—
—
70
—
dB
—
Error Amplifier Trans-conductance (note 2)
—
—
800
—
m
A/V
VEN
Enable Threshold
4.75V ≤ VIN ≤ 24V
0.7
1.0
1.3
V
TJ
Thermal Shutdown
—
—
150
—
°C
Note:1.SpecificationsareproductiontestedatTa=roomtemperature.Specificationsoverthe-40°Cto85°C
operatingtemperaturerangeareassuredbydesign,characterizationandcorrelationwithStatistical
QualityControls(SQC).
2.Designertestspecifications.



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