参数资料
型号: LTC3125EDCB#TRMPBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: SWITCHING REGULATOR, 1900 kHz SWITCHING FREQ-MAX, PDSO8
封装: 3 X 2 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, DFN-8
文件页数: 5/16页
文件大小: 292K
代理商: LTC3125EDCB#TRMPBF
LTC3125
13
3125f
TYPICAL APPLICATIONS
PC Card (3.3V/1000mA Maximum) 4.5V Output, GPRS, Class 10 Pulsed Load
CS
2.7μH*
LTC3125
GND
VIN
2.74M
2200μF**
3
55mΩ
TANT
10μF
CER
VOUT
4.5V, 2A PULSED LOAD
(1154μs PW, 4.6ms PERIOD)
VIN
PC CARD VCC
3.3V ±10%
1000mA MAX
1M
3125 TA04a
SHDN
PROG
VOUT
FB
22.6k
SW
OFF ON
*WURTH 7440420027
**VISHAY 592D228X6R3X220H
Waveforms of Input Current, VOUT for Pulsed Load Current
Single Supercap Charger
CS
2.2μH*
LTC3125
GND
VIN
1.07M
SC**
10F
60mΩ
10μF
CER
VOUT
2.5V
VIN
3.3V ±10%
1000mA MAX
1M
3125 TA05a
SHDN
PROG
VOUT
FB
22.6k
SW
OFF ON
*COILTRONICS SD3118-2R2-R
**COOPER B1325-2R5106-R
Waveforms of Input Current, VOUT for Pulsed Load Current
VOUT
100mV/DIV
INPUT CURRENT
500mA/DIV
LOAD CURRENT
2A/DIV
1ms/DIV
VIN = 3.3V
VOUT = 4.5V
COUT = 6.6mF
L = 2.7μH
RPROG = 22.6k
3125 TA04b
VOUT
500mV/DIV
INPUT CURRENT
500mA/DIV
LOAD CURRENT
1A/DIV
200ms/DIV
VIN = 3.3V
VOUT = 2.5V
COUT = 10F
L = 2.2μH
RPROG = 22.6k
3125 TA05b
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