LTC3605
19
3605fh
For more information www.linear.com/LTC3605
Typical applicaTions
Dual Output Tracking Application
CLKIN
RT
24
1
2
3
4
5
6
23
C1
2.2µF
C
IN1
22µF
×2
0.1µF
V
IN1
4V TO 15V
V
OUT1
1.8V
5A
0.1µF
C
OUT1
47µF
0.1µF10pF100pF
22 21
D1
20 19
10Ω
18
17
16
L1 0.33µH
15
14
13
7 8
100k
162k
16.2k
7.5k
2.49k
4.99k
9 10 11 12
SGNDPGND
PHMODE
MODE
FB
TRACK/SS
ITH
PV
IN
PV
IN
SW
SW
SW
SW
CLKOUT SGND
LTC3605
INTV
CC
BOOST SV
IN
RUN
SV
IN1
PGOOD V
ON
PGND SW SW
CLKIN
RT
24
1
2
3
4
5
6
23
C2
2.2µF
C
IN2
22µF
×2
0.1µF
V
IN2
4V TO 15V
V
OUT2
1.2V
5A
0.1µF
C
OUT2
47µF
10pF100pF
22 21
D2
20 19
10Ω
18
17
16
L2 0.33µH
15
14
13
7 8
100k
162k
16.2k
4.99k
4.99k
3605 TA04
9 10 11 12
SGNDPGND
PHMODE
MODE
FB
TRACK/SS
ITH
PV
IN
PV
IN
SW
SW
SW
SW
CLKOUT SGND
LTC3605
INTV
CC
BOOST SV
IN
RUN
SV
IN2
PGOOD V
ON
PGND SW SW
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
LTC3605
20
3605fh
For more information www.linear.com/LTC3605
package DescripTion
UF Package
24-Lead Plastic QFN (4mm × 4mm)
(Reference LTC DWG # 05-08-1697 Rev B)
4.00 ±0.10
(4 SIDES)
NOTE:
1. DRAWING PROPOSED TO BE MADE A JEDEC PACKAGE OUTLINE MO-220 VARIATION (WGGD-X)—TO BE APPROVED
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE, IF PRESENT
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
ON THE TOP AND BOTTOM OF PACKAGE
PIN 1
TOP MARK
(NOTE 6)
0.40 ±0.10
2423
1
2
BOTTOM VIEW—EXPOSED PAD
2.45 ±0.10
(4-SIDES)
0.75 ±0.05
R = 0.115
TYP
0.25 ±0.05
0.50 BSC
0.200 REF
0.00 – 0.05
(UF24) QFN 0105 REV B
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
0.70 ±0.05
0.25 ±0.05
0.50 BSC
2.45 ±0.05
(4 SIDES)
3.10 ±0.05
4.50 ±0.05
PACKAGE OUTLINE
PIN 1 NOTCH
R = 0.20 TYP OR
0.35 × 45° CHAMFER
UF Package
24-Lead Plastic QFN (4mm × 4mm)
(Reference LTC DWG # 05-08-1697 Rev B)
Please refer to http://www.linear.com/product/LTC3605#packaging for the most recent package drawings.
LTC3605
21
3605fh
For more information www.linear.com/LTC3605
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
REV DATE DESCRIPTION PAGE NUMBER
B 10/09 Edit to Typical Application.
Changes to Absolute Maximum Ratings.
Add I-grade part to Order Information.
Changes to Electrical Characteristics and Notes.
Text changes to Pin Functions.
Text changes.
Edits to equations.
1
2
2
3
6
9
14
C 10/12 Updates to Typical Application. 17
D 04/15 Clarified negative valley current limit parameter.
Added negative valley current limit explanation.
Clarified Typical Application.
3
11
17
E 08/15 Added “Do not float this pin” to MODE pin function. 6
F 11/15 Changed RUN Voltage Abs Max Rating
Enhanced Inductor Selection section
2
11
G 02/16 Added new section on PV
IN
/SV
IN
Voltage Differential 9
H 09/16 Modified Block Diagram 7
revision hisTory
(Revision history begins at Rev B)

LTC3605EUF#TRPBF

Mfr. #:
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 14V, 5A PolyPhase Synchronous Step Down Regulator
Lifecycle:
New from this manufacturer.
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