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LTC1438XCG#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32
LTC1438/LTC1439
28
14389fb
TYPICAL APPLICATIONS
U
LTC1439/LTC1539 4-Output High Efficiency Low Noise 5V/3A, 3.3V/3A, 2.9V/2.6A, 12V/200mA Notebook Computer Power Supply
(See PCB LAYOUT AND FILM for Layout of Schematic)
1
2
3
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
RUN/SS1
SENSE
+
1
SENSE
–
1
I
TH1
POR2
C
OSC
SGND
LBI
LBO
SFB1
I
TH2
V
PROG2
V
OSENSE2
SENSE
–
2
SENSE
+
2
RUN/SS2
AUXDR
PLL LPF
PLLIN
BOOST 1
TGL1
SW1
TGS1
V
IN
BG1
INTV
CC
PGND
BG2
EXTV
CC
TGS2
SW2
TGL2
BOOST 2
AUXON
AUXFB
LTC1439
LTC1539
D2
CMDSH-3
D4
CMDSH-3
D1
MBRS140
T1*
10µH
1:1.42
D3
MBRS140
M1A
C20
0.1µF
C15
33pF
C2
1000pF
C27
0.1µF
M1B
M5
1438 TA04
M4
V
OUT1
5V STANDBY
(LTC1539)
C24, 4.7µF, 16V
+
R13, 10k
R15
10k
C10, 1000pF
LBO
LB1
C3
56pF
C8
220pF
C14, 0.1µF
C7,
470pF
POR2
INTV
CC
D6
CMDSH-3
R10
+
C16, C19
100µF
10V EA
+
C28, C29
100µF
10V
EA
V
OUT1
5V
3A
V
OUT3
12V
120mA
V
IN
(28V MAX)
R12
0.02Ω
1W
V
OUT2
3.3V
3A
L2
10µH
C25, C26
22µF
35V
EA
R9
47k
R2
100Ω
R1
27Ω
+
C5
330µF
6.3V
+
OPTIONAL
330µF
6.3V
Q1
2N2907
V
LDO
2.9V/1A
2.6A PEAK
GND
GND
4
V
PROG1
R20
10Ω
R21
10Ω
R19
100Ω
R18
100Ω
C23, 0.1µF
R22
10Ω
+
C1, C21,
C22
22µF
35V
EA
V
IN
5.2V TO 28V: SWITCHING FREQUENCY = 200kHz
5V/3A, 3.3V/3A, 2.9V/1A, 2.6A PEAK LINEAR, 12V/200mA
M1, M2, M4 AND M5 = SILICONIX, Si4412ADY
M3, M6 = IRLML2803
M7 = INTERNATIONAL RECTIFIER, IRLL014
C11
0.1µF
C9
220pF
C6,
1000pF
C13
1000pF
M7
R5
4.7k
C18, 0.01µF
+
C12
6.8nF
Q2 ZETEX
FZT849
R11
10Ω
R7
221k
1%
R8, 316k,1%
C17, 22pF
+
C4
3.3µF
25V
D5
MMBD914L
R3
100k
1%
R4
11.3k
1%
Q1 = MOTOROLA, MMBT2907ALT1
Q2 = ZETEX, FZT849
T1 = DALE, LPE-6562-A236
L2 = SUMIDA, CDRH127-100MC
ALL INPUT AND OUTPUT CAPACITORS
ARE AVX-TPS SERIES
R12
1k
D7
LTC1438/LTC1439
29
14389fb
PCB LAYOUT A D FIL
UW
(Gerber files for this circuit board are available. Call LTC Marketing.)
Silkscreen Top Silkscreen Bottom
Copper Layer 1
Copper Layer 2 Ground Plane
Copper Layer 4
Copper Layer 3
LTC1438/LTC1439
30
14389fb
PACKAGE DESCRIPTION
U
G Package
28-Lead Plastic SSOP (0.209)
(LTC DWG # 05-08-1640)
G Package
36-Lead Plastic SSOP (0.209)
(LTC DWG # 05-08-1640)
0.09 – 0.25
(.0035 – .010)
0° – 8°
0.55 – 0.95
(.022 – .037)
5.00 – 5.60**
(.197 – .221)
7.40 – 8.20
(.291 – .323)
1234
5
6
7
8 9 10 11 12 1413
9.90 – 10.50*
(.390 – .413)
2526 22 21 20 19 18
17
16 1523242728
2.0
(.079)
MAX
0.05
(.002)
MIN
0.65
(.0256)
BSC
0.22 – 0.38
(.009 – .015)
TYP
MILLIMETERS
(INCHES)
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
2. DIMENSIONS ARE IN
0.42 ±0.03 0.65 BSC
5.3 – 5.7
7.8 – 8.2
RECOMMENDED SOLDER PAD LAYOUT
1.25 ±0.12
DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED .152mm (.006") PER SIDE
DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED .254mm (.010") PER SIDE
*
**
3. DRAWING NOT TO SCALE
G28 SSOP 0204
0.09 – 0.25
(.0035 – .010)
0° – 8°
0.55 – 0.95
(.022 – .037)
5.00 – 5.60**
(.197 – .221)
7.40 – 8.20
(.291 – .323)
1234
5
6
7
8 9 10 11 12 14 15 16 17 1813
12.50 – 13.10*
(.492 – .516)
2526 22 21 20 19232427282930313233343536
2.0
(.079)
MAX
0.05
(.002)
MIN
0.65
(.0256)
BSC
0.22 – 0.38
(.009 – .015)
TYP
MILLIMETERS
(INCHES)
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
2. DIMENSIONS ARE IN
DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED .152mm (.006") PER SIDE
DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED .254mm (.010") PER SIDE
*
**
3. DRAWING NOT TO SCALE
0.42 ±0.03 0.65 BSC
5.3 – 5.7
7.8 – 8.2
RECOMMENDED SOLDER PAD LAYOUT
1.25 ±0.12
G36 SSOP 0204
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32

LTC1438XCG#PBF

Mfr. #:
Buy LTC1438XCG#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 2x Hi Eff, L N, Sync Buck Sw Regs
Lifecycle:
New from this manufacturer.
Delivery:
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Payment:
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