LTC3125EDCB#TRPBF Linear Technology, LTC3125EDCB#TRPBF Datasheet - Page 13

• Manufacturer Part Number: LTC3125EDCB#TRPBF
• Description: IC DC/DC CONV STP-UP 1.2A 8-DFN
• Manufacturer: Linear Technology
• Type: Step-Up (Boost)r

Specifications of LTC3125EDCB#TRPBF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 2 ~ 5.25 V
• Current - Output: 1.2A
• Frequency - Switching: 1.6MHz
• Voltage - Input: 1.8 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-DFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

TYPICAL APPLICATIONS
PC CARD V
1000mA MAX
1000mA MAX
3.3V ±10%
3.3V ±10%
PC Card (3.3V/1000mA Maximum) 4.5V Output, GPRS, Class 10 Pulsed Load
V
V
CC
IN
IN
10μF
CER
10μF
CER
Single Supercap Charger
OFF ON
OFF ON
22.6k
22.6k
V
SHDN
PROG
V
SHDN
PROG
CS
CS
IN
IN
LTC3125
LTC3125
2.2μH*
2.7μH*
GND
GND
**VISHAY 592D228X6R3X220H
**COOPER B1325-2R5106-R
V
V
*WURTH 7440420027
SW
SW
*COILTRONICS SD3118-2R2-R
OUT
OUT
FB
FB
3125 TA05a
1.07M
1M
2.74M
1M
3125 TA04a
SC**
10F
60mΩ
V
2.5V
OUT
2200μF**
55mΩ
TANT
V
4.5V, 2A PULSED LOAD
(1154μs PW, 4.6ms PERIOD)
3
OUT
INPUT CURRENT
INPUT CURRENT
LOAD CURRENT
LOAD CURRENT
500mA/DIV
500mA/DIV
100mV/DIV
500mV/DIV
2A/DIV
1A/DIV
V
V
OUT
OUT
V
V
C
L = 2.7μH
R
V
V
C
L = 2.2μH
R
IN
OUT
OUT
IN
OUT
OUT
PROG
PROG
= 3.3V
= 3.3V
V
= 4.5V
= 6.6mF
V
= 2.5V
= 10F
Waveforms of Input Current,
Waveforms of Input Current,
= 22.6k
= 22.6k
OUT
OUT
for Pulsed Load Current
for Pulsed Load Current
200ms/DIV
1ms/DIV
LTC3125
13
3125 TA04b
3125 TA05b
3125fa