LTC1878EMS8 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1878EMS8' PDF : 16 Pages View PDF
LTC1878
APPLICATIO S I FOR ATIO
220pF
LTC1878
1
RUN
8
PLL LPF
22µF**
CER
2
7
ITH SYNC/MODE
3
6
VFB
4
VIN
5
15µH*
GND
SW
+
47µF***
VIN
2.65V
TO 4.2V
VOUT
2.5V
412k
887k
20pF
1878 F08a
*SUMIDA CD54-150
**TAIYO-YUDEN CERAMIC JMK325BJ226MM
***SANYO POSCAP 6TPA47M
95
VIN = 3V
90
VIN = 3.6V
85
VIN = 4.2V
80
75
VOUT = 2.5V
L = 15µH
70
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
1878 F08b
Figure 8. Single Lithium-Ion to 2.5V/0.3A Regulator from Design Example
TYPICAL APPLICATIO S
220pF
Single Li-Ion to 2.5V/0.6A Regulator
Using All Ceramic Capacitors
LTC1878
1
RUN
8
PLL LPF
2
7
ITH SYNC/MODE
3
VFB
6
VIN
4
GND
5
SW
10µH*
20pF 887k
*TOKO D62CB A920CY-100M
**TAIYO-YUDEN CERAMIC JMK325BJ226MM
412k
1878 TA03
COUT**
22µF
CER
VOUT
2.5V
0.6A
CIN**
22µF
CER
VIN
3V TO 4.2V
14
220pF
3- to 4-Cell NiCd/NiMH to 1.8V/0.5A Regulator
Using All Ceramic Capacitors
LTC1878
1
RUN
8
PLL LPF
2
7
ITH SYNC/MODE
3
VFB
6
VIN
4
GND
5
SW
10µH*
20pF 887k
*TOKO D62CB A920CY-100M
**TAIYO-YUDEN CERAMIC JMK325BJ226MM
698k
1878 TA04
COUT**
22µF
CER
VOUT
1.8V
0.5A
CIN**
22µF
CER
VIN
2.7V TO 6V
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