HT77XX(2006) 查看數據表（PDF） - Holtek Semiconductor
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HT77XX Datasheet PDF : 15 Pages
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HT77XX
HT7750, +5.0V Output Type
Symbol
Parameter
VOUT
Output Voltage
VIN
Input Voltage
VSTART Start-up Voltage
VHOLD Min. Hold-on Voltage
IIN
Current Consumption
IDD1
Supply Current 1
IDD2
ISHDN
ILEAK
fOSC
h
DOSC
Supply Current 2
Shutdown Current
LX Leakage Current
Maximum Oscillator Frequency
Efficiency
Oscillator Duty Cycle
VIN=VOUT´0.6; IOUT=10mA; Ta=25°C (Unless otherwise specified)
Test Conditions
Min. Typ. Max. Unit
¾
4.875
5
5.125
V
¾
¾
¾
6
V
VIN: 0®2V; IOUT=1mA
VIN: 2®0V; IOUT=1mA
Measured at no load
¾
0.7
0.8
V
¾
¾
0.7
V
¾
10
¾
mA
VIN=VOUT´0.95
Measured at VOUT pin
¾
85
¾
mA
VIN=VOUT+0.5V
Measured at VOUT pin
¾
4
7
mA
VCE=VIL, VIN=VOUT´0.95
VIN=6V
¾
0.5
¾
mA
¾
¾
0.9
mA
VIN=VOUT´0.95
Measured at LX pin
¾
115
¾
kHz
¾
¾
85
¾
%
VIN=VOUT´0.95
Measured at LX pin
65
75
85
%
Typical Performance Characteristics
L=220mH, C=47mF
90
85
80
75
V IN = 0 .9 V
V IN = 1 .2 V
V IN = 1 .5 V
V IN = 1 .8 V
V IN = 2 .0 V
70
65
60
55
50
0
10
20
30
40
50
60
70
80
90
100
O u tp u t C u rre n t (m A )
HT7730 Efficiency vs. Output Current
Rev 1.10
5
March 7, 2006
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