HT7727A(2007) 查看數據表（PDF） - Holtek Semiconductor
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HT7727A Datasheet PDF : 18 Pages
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HT77XXA
Typical Performance Characteristics
2 .8 0
2 .7 5
2 .7 0
2 .6 5
2 .6 0
2 .5 5
2 .5 0
2 .4 5
2 .4 0
2 .3 5
2 .3 0
0
V IN = 1 .2 V
V IN = 1 .6 V
V IN = 2 .0 V
V IN = 1 .8 V
20 40
60 80 100 120 140 160 180 200 220
O u tp u t C u rre n t (m A )
HT7727A Output Voltage v.s Output Current
(CIN=47mF-Tantalum, L=47mH, COUT=22mF-Tantalum)
90%
85%
80%
75%
70%
65%
60%
55%
0
V IN = 1 .2 V
V IN = 2 .0 V
V IN = 1 .6 V
V IN = 1 .8 V
20 40
60 80 100 120 140 160 180 200 220
O u tp u t C u rre n t (m A )
HT7727A Efficiency v.s Output Current
(CIN=47mF-Tantalum, L=47mH, COUT=22mF-Tantalum)
360
310
260
V IN = 1 .8 V
210
V IN = 1 .6 V
160
V IN = 1 .2 V
V IN = 2 .0 V
110
60
10
0 20 40 60 80 100 120 140 160 180 200 220
O u tp u t C u rre n t (m A )
HT7727A Ripple Voltage v.s Output Current
(CIN=47mF-Tantalum, L=47mH, COUT=22mF-Tantalum)
360
310
260
210
V IN = 1 .6 V
160
V IN = 1 .8 V
110
V IN = 1 .2 V
V IN = 2 .0 V
60
10
0 10 20 30 40 50 60 70 80 90 100 110
O u tp u t C u rre n t (m A )
HT7727A Ripple Voltage v.s Output Current
(CIN=47mF-Tantalum, L=100mH, COUT=22mF-Tantalum)
1
S ta rt-u p
0 .9
0 .8
H o ld - o n
0 .7
0 .6
0 .5
0 .4
0 .3
0 .2
0 .1
0 2 4 6 8 10 12 14 16 18 20 22
O u tp u t C u rre n t (m A )
HT7727A Start-up/Hold-on Voltage
(CIN=47mF-Tantalum, L=47mH, COUT=22mF-Tantalum)
Rev 1.10
4
September 26, 2007
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