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HT7727 데이터시트(PDF) 3 Page - Holtek Semiconductor Inc

부품명 HT7727
상세설명  PFM Step-up DC/DC Converter
PDF  15 Pages
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제조업체  HOLTEK [Holtek Semiconductor Inc]
홈페이지  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT7727 데이터시트(HTML) 3 Page - Holtek Semiconductor Inc

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Electrical Characteristics
HT7727, +2.7V Output Type
VIN=VOUT
´0.6; IOUT=10mA; Ta=25°C (Unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VOUT
Output Voltage
¾
2.633
2.7
2.767
V
VIN
Input Voltage
¾¾
¾
6V
VSTART
Start-up Voltage
VIN:0
®2V; IOUT=1mA
¾
0.6
0.7
V
VHOLD
Minimum Hold-on Voltage
VIN:2
®0V; IOUT=1mA
¾¾
0.7
V
IIN
No load Input Current
Measured at no load
¾
10
¾mA
IDD1
Supply Current 1
VIN=VOUT
´0.95
Measured at VOUT pin
¾
40
¾mA
IDD2
Supply Current 2
VIN=VOUT+0.5V
Measured at VOUT pin
¾
47
mA
ISHDN
Shutdown Current
VCE=VIL,VIN=VOUT
´0.95
¾
0.5
¾mA
ILEAK
LX Leakage Current
VIN=6V
¾¾
0.9
mA
fOSC
Maximum Oscillator Frequency
VIN=VOUT
´0.95
Measured at LX pin
¾
115
¾
kHz
h
Efficiency
¾¾
85
¾
%
DOSC
Oscillator Duty Cycle
VIN=VOUT
´0.95
Measured at LX pin
65
75
85
%
HT7730, +3.0V Output Type
VIN=VOUT
´0.6; IOUT=10mA; Ta=25°C (Unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VOUT
Output Voltage
¾
2.925
3
3.075
V
VIN
Input Voltage
¾¾
¾
6V
VSTART
Start-up Voltage
VIN:0
®2V; IOUT=1mA
¾
0.6
0.7
V
VHOLD
Min. Hold-on Voltage
VIN:2
®0V; IOUT=1mA
¾¾
0.7
V
IIN
No load Input Current
Measured at no load
¾
10
¾mA
IDD1
Supply Current 1
VIN=VOUT
´0.95
Measured at VOUT pin
¾
48
¾mA
IDD2
Supply Current 2
VIN=VOUT+0.5V
Measured at VOUT pin
¾
47
mA
ISHDN
Shutdown Current
VCE=VIL,VIN=VOUT
´0.95
¾
0.5
¾mA
ILEAK
LX Leakage Current
VIN=6V
¾¾
0.9
mA
fOSC
Maximum Oscillator Frequency
VIN=VOUT
´0.95
Measured at LX pin
¾
115
¾
kHz
h
Efficiency
¾¾
85
¾
%
DOSC
Oscillator Duty Cycle
VIN=VOUT
´0.95
Measured at LX pin
65
75
85
%
HT77XX
Rev 1.10
3
March 7, 2006



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