LTC3412A Datasheet, PDF (17/20 Pages) Linear Technology – 3A, 4MHz, Monolithic Synchronous Step-Down Regulator

LTC3412A
TYPICAL APPLICATIO S
3.3V, 3A Step-Down Regulator at 2MHz, Forced Continuous Mode Operation
C1 22pF X5R
R1 634k
V_IN
C_IN3** ^5V
100μF
1
SV_IN
16
PV_IN
R_PG
100k
PGOOD
C_ITH 820pF X7R
R_ITH
7.5k
C_C
47pF
2 _PGOOD
SW ¹⁵
3 _ITH
4
SW ¹⁴
LTC3412A
EFE _PGND ¹³
R2
200k
R_OSC
137k
V_FB
5
R_T
6 _SYNC/MODE
PGND ¹²
SW ¹¹
7 _RUN
SW ¹⁰
R_SS
2.2M
C_SS
1000pF X7R _{8 SGND}
PV_IN ⁹
*VISHAY IHLP-2525CZ-01
**TDK C4532X5R0J107M
C_IN1
22μF
X5R 6.3V
L1*
0.47μH
V_OUT
3.3V
3A
C_OUT**
100μF
×2
C_IN2
22μF
X5R 6.3V
GND
3412 TA03
2.5V, 3A Step-Down Regulator Synchronized to 1.8MHz
V_IN
3.3V
C1 22pF X5R
R1 392k
PGOOD
1
SV_IN
16
PV_IN
R_PG
100k
C_ITH 220pF X7R ^RITH
6.49k
2 _PGOOD
3
I_TH
SW ¹⁵
14
SW
C_C 22pF
4
V_FB
LTC3412A
EFE _PGND ¹³
R2 162k
5 _RT
PGND ¹²
R_OSC 182k
R_SS
2.2M
1.8MHz
EXT CLOCK
6 _SYNC/MODE
7 _RUN
11
SW
SW ¹⁰
C_SS
1000pF X7R _{8 SGND}
9
PV_IN
C_IN1
22μF
X5R 6.3V
L1*
0.47μH
V_OUT
1.5V
3A
+ _COUT**
150μF
C_IN2
22μF
GND
X5R 6.3V
*COOPER SD20-R47
**SANYO POSCAP 4TPE150MAZB
3412 TA04
3412afc
17