LTC1539 5-Output High Efficiency Low Noise 5V/3A, 3.3V/3A, 2.9V/2.6A, 12V/200mA, 5V/20mA Notebook Computer Power Supply
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
LTC1539
D2
CMDSH-3
D4
CMDSH-3
D1
MBRS140
T1*
10µH
1:1.42
D3
MBRS140
M1A
C20
0.1µF
C15
1000pF
C2
1000pF
C27, 0.1µF
M1B
M5
1538 TA04
M4
V
OUT1
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
+
C28, C29
100µF
10V
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
R9
47k
R2
100Ω
R1
27Ω
+
C5
330µF
6.3V
+
OPTIONAL
330µF
6.3V
Q1
2N2907
V
LDO
2.9V/1A
2.6A PEAK
4
V
PROG1
R20
10Ω
R21
10Ω
R19, 100Ω
R18, 100Ω
C23, 0.1µF
R22
10Ω
+
C1, C21
C22
22µF
35V
V
IN
5.2V TO 28V: SWITCHING FREQUENCY = 200kHz
5V/3A, 3.3V/3A, 2.9V/1A, 2.6A PEAK, LINEAR 12V/200mA
M1 = SILICONIX, Si4936DY
M4, M5 = SILICONIX, Si4412DY
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
MMBD914L
5V/20mA
STANDBY
5V STANDBY
(≤ 20mA)
