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參數(shù)資料
| 型號： | LTC3225EDDB-1#TRMPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.175 A SWITCHED CAPACITOR CONVERTER, 1500 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | 3 X 2 MM, LEAD FREE, PLASTIC, MO-229WECD-1, DFN-10 |
| 文件頁數(shù)： | 9/14頁 |
| 文件大?。?/td> | 263K |
| 代理商： | LTC3225EDDB-1#TRMPBF |
LTC3225/LTC3225-1
4
3225fb
Oscillator Frequency vs
Supply Voltage
Charge Pump Open-Loop Output
Resistance vs Temperature
(2VIN – VCOUT)/IOUT
TYPICAL PERFORMANCE CHARACTERISTICS
(TA = 25°C, CFLY = 1μF, CIN = 2.2μF, CTOP = CBOT, unless otherwise specied)
IOUT (mA)
20
4
5
7
80
120
3225 G04
3
40
60
100
140
160
2
6
EXTRA
I
IN
(mA)
VIN = 3.6V
CHARGE PUMP IS ON
VOUT = 4.5V
VOUT = 5V
VOUT = 3.7V
VOUT = 4.2V
VIN (V)
2.5
0
I IN
(μA)
5
10
15
20
30
3
3.5
4
4.5
3225 G05
5
5.5
25
TA = 85°C
TA = 25°C
TA = –40°C
VIN
20mV/DIV
IVIN
200mA/DIV
200ns/DIV
3225 G08
RPROG = 12k
0mA
Charging Prole with Unequal
Initial Output Capacitor Voltage
(Initial VTOP = 1.3V, VBOT = 1V)
VIN (V)
2.5
0.88
FREQUENCY
(MHz)
0.89
0.91
0.92
3
3.5
4
4.5
3225 G07
5
0.93
0.94
0.90
5.5
TA = 25°C
TA = 85°C
TA = –40°C
TEMPERATURE (°C)
–40
R
OL
(Ω)
7.5
8.0
8.5
35
85
3225 G06
7.0
6.5
6.0
–15
10
60
9.0
9.5
10.0
VOUT = 3.7V
(LTC3225-1)
VOUT = 4.5V
(LTC3225)
VIN = 3.6V
SHDN
5V/DIV
VCOUT
2V/DIV
VTOP-VBOT
500mV/DIV
IVIN
300mA/DIV
2 SEC/DIV
3225 G09
LTC3225
VSEL = VIN
RPROG = 12k
CTOP = CBOT = 1.1F
CTOP INITIAL VOLTAGE = 1.3V
CBOT INITIAL VOLTAGE = 1V
Extra Input Current vs Output
Current (IVIN – 2 IOUT)
No-Load Input Current vs
Supply Voltage
Input Ripple and Input Current
IOUT vs RPROG
Efciency vs VIN
IOUT vs VOUT (RPROG = 12k)
RPROG (kΩ)
10
I OUT
(mA)
60
80
100
40
60
3225 G01
40
20
0
20
30
50
120
140
160
VIN = 3.6V
VOUT = 4.5V (LTC3225)
VOUT (V)
0
I OUT
(mA)
20
60
80
100
2
4
5
180
3225 G02
40
13
0.5
2.5
4.5
1.5
3.5
120
140
160
VIN = 2.8V
VIN = 3.6V
VIN = 5.5V
CTOP = CBOT
VIN (V)
2.5
0
EFFICIENCY
(%)
10
30
40
50
4.5
100
90
3525 G03
20
3.5
3
5
4
5.5
60
70
80
V= VIN
VSEL = 0
ILOAD = 100mA
CTOP = CBOT
LTC3225
LTC3225-1
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