LTC3611_15 Datasheet, PDF (26/26 Pages) Linear Technology – 10A, 32V Monolithic Synchronous Step-Down DC/DC Converter

LTC3611
Typical Application
PGND
14V to 32V Input to 12V/5A at 500kHz
C_VCC
4.7µF
6.3V
INTV_CC
SW
C_F
0.1µF
50V
V_IN
SGND
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
V_OUT
12V AT
5A
C5
22µF
25V
(OPTIONAL)
GND
C_OUT +
180µF
16V
L1
4.7µH
V_IN
14V TO 32V
V_IN
GND
C_IN
4.7µF
C6 +
100µF
50V
50V
×2
(OPTIONAL)
1 _PGND
2 _PGND
3 _PGND
4 _SW
5 _SW
6 _SW
7 _SW
8 _SW
9 _SW
10 _SW
11 _SW
12 _PVIN
13 _PVIN
14 _PVIN
15 _PVIN
16 _PVIN
LTC3611
SGND ⁴⁸
SGND ⁴⁷
SGND ⁴⁶
SGND ⁴⁵
EXTV_CC ⁴⁴
V_FB ⁴³
SGND ⁴²
I_ON ⁴¹
SGND ⁴⁰
FCB ³⁹
I_TH ³⁸
V_RNG ³⁷
PGOOD ³⁶
V_ON ³⁵
SGND ³⁴
33
EXTV_CC
C4
0.01µF
R1
1.58k
C1
1%
(OPTIONAL)
R_ON
1M
1%
C_ON
0.01µF
(OPTIONAL)
R5
20k
R2
30.1k
1%
(OPTIONAL)
C2
V_OUT
V_IN
C_C1
560pF
R_PG1
100k
INTV_CC
C_C2
100pF
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
C_IN: GRM31CR71H475K
C_OUT: SANYO 16SVP180MX
L1: HCP0703-4R7-R
INTV_CC
KEEP POWER AND SIGNAL GROUNDS SEPARATE.
CONNECT TO ONE POINT.
C_B1
0.22µF
D_B
CMDSH-3
C_SS
0.1µF
RUN/SS
R_SS1
510k
V_IN
(OPTIONAL)
(OPTIONAL)
C_VON
I_NTVCC
SGND
3611 TA05
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PART NUMBER DESCRIPTION
COMMENTS
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LTC3411
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LTC3418
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LTC3770
LTC3778
LT3800
No R_SENSE Current Mode Synchronous Step-Down Controller Up to 97% Efficiency, V_IN: 4V to 36V, 0.8V ≤ V_OUT ≤ (0.9)(V_IN),
I_OUT Up to 20A
1.25A (I_OUT), 4MHz, Synchronous Step-Down DC/DC Converter 95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT: 0.8V, I_Q: 60μA, I_SD: <1μA,
MS Package
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4A (I_OUT), 4MHz, Synchronous Step-Down DC/DC Converter
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95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN): 0.8V, I_Q: 60mA,
I_SD: <1mA, TSSOP16E
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: 2.25V to 5.5V, V_OUT(MIN) = 0.8V, Thermally
Enhanced 38-Lead QFN Package
12A Current Mode Monolithic Synchronous Step-Down Converter Up to 24V Input (28V Maximum), Current Mode Extremely Fast
Transient Response
Fast, No R_SENSE Step-Down Synchronous Controller with
Margining, Tracking, PLL
Low V_OUT, No R_SENSE Synchronous Step-Down Controller
±0.67% 0.6V Reference Voltage; Programmable Margining;
True Current Mode; 4V ≤ V_IN ≤ 32V
0.6V ≤ V_OUT ≤ (0.9) V_IN, 4V ≤ V_IN ≤ 36V, I_OUT Up to 20A
60V Synchronous Step-Down Controller
Current Mode, Output Slew Rate Control
LTM4600HV 10A Complete Switch Mode Power Supply
LTM4601HV 12A Complete Switch Mode Power Supply
LTM4602HV 6A Complete Switch Mode Power Supply
LTM4603HV 6A Complete Switch Mode Power Supply
92% Efficiency, V_IN: 4.5V to 28V, V_OUT: 0.6V, True Current Mode
Control, Ultrafast Transient Response
92% Efficiency, V_IN: 4.5V to 28V, V_OUT: 0.6V, True Current Mode
Control, Ultrafast Transient Response
92% Efficiency, V_IN: 4.5V to 28V, V_OUT: 0.6V, True Current Mode
Control, Ultrafast Transient Response
93% Efficiency, V_IN: 4.5V to 28V, with PLL, Output Tracking and Margining
26 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
3611fd
LT 0610 REV D • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2008