LTC3605A_15 Datasheet, PDF (19/22 Pages) Linear Technology – 20V, 5A Synchronous Step-Down Regulator

LTC3605A
Typical Applications
Dual Output Tracking Application
162k
16.2k
100pF
10pF
C1
2.2µF
D1
0.1µF
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
C_IN1
22µF
×2
L1 0.33µH
5
TRACK/SS
14
SW
6
ITH
13
SW
0.1µF _{RUN PGOOD VON PGND SW SW}
7
8
9
10 11 12
SV_IN1
100k
PGND
V_IN1
4V TO 20V
0.1µF
C_OUT1
47µF
V_OUT1
1.8V
5A
7.5k
2.49k
SGND
4.99k
162k
16.2k
100pF
10pF
C2
2.2µF
D2
0.1µF
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
C_IN2
22µF
×2
L2 0.33µH
5
TRACK/SS
14
SW
6
ITH
13
SW
RUN PGOOD V_ON PGND SW SW
7
8
9
10 11 12
SV_IN2
100k
PGND
V_IN2
4V TO 20V
0.1µF
C_OUT2
47µF
V_OUT2
1.2V
5A
4.99k
4.99k
SGND
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-2525CZERR33-M01
3605A TA04
Dual Output Tracking Waveform
V_OUT1
500mV/DIV
V_OUT2
500mV/DIV
V_IN = 12V
500µs/DIV
V_OUT1 = 1.8V, V_OUT2 = 1.2V
I_OUT1 = 80mA, I_OUT2 = 80mA
3605A TA04b
For more information www.linear.com/LTC3605A
3605afc
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