LTC3609 Datasheet, PDF (24/24 Pages) Linear Technology – 32V, 6A Monolithic Synchronous Step-Down DC/DC Converter

LTC3609
TYPICAL APPLICATION
INTV_CC
C_VCC
4.7μF
6.3V
V_IN
C_F
R_F1
0.1μF 1Ω
50V
SW
GND
40 39 38 37 36 35 34 33 32 31 30 29 28 27
V_OUT
12V AT
4A
GND
C_OUT1 +
180μF
16V
L1
4.3μH
V_IN
V_IN
14V TO 32V
C_IN
4.7μF
x2
41 _SW
42 _SW
43 _SW
44
SW
45 _SW
46 _SW
47 _SW
48 _PVIN
49 _PVIN
50 _PVIN
51
PV_IN
52
PV_IN
LTC3609
SGND ²⁶
NC ²⁵
NC ²⁴
23
V_FB
I_ON ²²
NC ²¹
SGND ²⁰
19
FCB
I_TH ¹⁸
V_RNG ¹⁷
16
PGOOD
SGND ¹⁵
EXTV_CC
C4
0.01μF
R2
60.4k
1%
R1
3.16k
1% RON
1M
1%
V_OUT
V_IN
INTV_CC
JP1
R5
C_C1
1000pF
24.3k
R_PG1
100k
C_C2
100pF
1 2 3 4 5 6 7 8 9 10 11 12 13 14
C_IN: MURATA GRM31CR71H475K
C_OUT: SANYO 16SVP180MX
L_I: CDEP4R3MC-88
KEEP POWER GROUND AND SIGNAL
GROUND SEPARATE. CONNECT AT
ONE POINT.
SW
2Ω
INTV_CC
D_B
CMDSH-3
C_B1
0.22μF
SW
C_SS
0.1μF
C_VON
0.1μF
SGND ^{PGOOD INTVCC}
INTV_CC
3609 TA05
Figure 8. 14V to 32V Input to 12V/4A at 500kHz
RELATED PARTS
PART NUMBER DESCRIPTION
LTC3602
2.5A (I_OUT), 3MHz, Synchronous Step-Down DC/DC
Converter
LTC3608
18V, 8A (I_OUT), 1MHz, Synchronous Step-Down DC/DC
Converter
LTC3610
24V, 12A (I_OUT), 1MHz, Synchronous Step-Down DC/DC
Converter
LTC3611
32V, 10A (I_OUT), 1MHz, Synchronous Step-Down DC/DC
Converter
LTC3414/
LTC3416
4A (I_OUT), 4MHz, Synchronous Step-Down DC/DC
Converter
LTC3415
7A (I_OUT), 1.5MHz, Synchronous Step-Down DC/DC
Converter
LTC3418
8A (I_OUT), 4MHz, Synchronous Step-Down DC/DC
Converter
24 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
COMMENTS
95% Efficiency, V_IN: 4.5V to 10V, V_OUT(MIN) = 0.6V, I_Q = 75μA, I_SD <1μA,
4mm × 4mm QFN-20, TSSOP-16E Packages
95% Efficiency, V_IN: 4V to 18V, V_OUT(MIN) = 0.6V, I_Q = 900μA, I_SD <15μA,
7mm × 8mm QFN-52 Package
95% Efficiency, V_IN: 4V to 24V, V_OUT(MIN) = 0.6V, I_Q = 900μA, I_SD <15μA,
9mm × 9mm QFN-64 Package
95% Efficiency, V_IN: 4V to 32V, V_OUT(MIN) = 0.6V, I_Q = 900μA, I_SD <15μA,
9mm × 9mm QFN-64 Package
95% Efficiency, V_IN: 2.25V to 5.5V, V_OUT(MIN) = 0.8V, I_Q = 64μA, I_SD <1μA,
TSSOP20E Package
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.6V, I_Q = 450μA, I_SD <1μA,
5mm × 7mm QFN-38 Package
95% Efficiency, V_IN: 2.25V to 5.5V, V_OUT(MIN) = 0.8V, I_Q = 380μA, I_SD <1μA,
5mm × 7mm QFN-38 Package
3609f
LT 1208 • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2008