LTC3605A_15 Datasheet, PDF (18/22 Pages) Linear Technology – 20V, 5A Synchronous Step-Down Regulator

LTC3605A
Typical Applications
12V, 10A 2-Phase Single Output Regulator
162k
5.4k
470pF
10pF
0.1µF
C1
2.2µF
D1
10Ω
24
23
22 21 20 19
CLKIN CLKOUT SGND INTV_CC BOOST SV_IN
1
18
RT
PV_IN
2
PHMODE
17
PV_IN
3
MODE
4
FB
LTC3605A
16
SW
15
SW
5
TRACK/SS
14
SW
6
0.1µF
ITH
RUN
7
PGOOD V_ON PGND
8
9
10
13
SW
SW SW
11 12
SV_IN
100k
C_IN1
22µF
×2
V_IN
4V TO 20V
0.1µF
L1 1.5µH
C_OUT1
47µF
×2
V_OUT
3.3V
10A
10k
100pF
2.21k
PGND
SGND
162k
5.4k
470pF
10pF
C1, C2: AVX 0805ZD225MAT2A
C_IN1, C_IN2: TDK C4532X5RIC226M
C_OUT1, C_OUT2: TDK C3216X5ROJ476M
D1, D2: CENTRAL SEMI CMDSH-3
L1, L2: VISHAY IHLP-2525CZER1R5-M01
0.1µF
C2
2.2µF
D2
10Ω
24
23
22 21 20 19
CLKIN CLKOUT SGND INTV_CC BOOST SV_IN
1
18
RT
PV_IN
2
PHMODE
17
PV_IN
3
MODE
4
FB
LTC3605A
16
SW
15
SW
5
TRACK/SS
14
SW
6
ITH
13
SW
RUN PGOOD V_ON PGND SW SW
7
8
9
10 11 12
SV_IN
C_IN2
22µF
×2
L2 1.5µH
PGND
0.1µF
C_OUT2
47µF
SGND
3605A TA03
18
12V, 10A, 2-Phase Efficiency
100
90 ^DCM
80
CCM
70
60
50
40
30
20
10
0
0.1
1
LOAD CURRENT (A)
10
3605A TA03b
12V, 10A, 2-Phase Load Step
V_OUT
100mV/DIV
AC-COUPLED
I_L1
2A/DIV
I_L2
2A/DIV
20µs/DIV
3605A TA03c
For more information www.linear.com/LTC3605A
3605afc