LTC1539 LINER [Linear Technology], LTC1539 Datasheet - Page 2

• Manufacturer Part Number: LTC1539
• Description: Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators
• Manufacturer: LINER [Linear Technology]

ABSOLUTE
PACKAGE/ORDER
Input Supply Voltage (V
Topside Driver Voltage (BOOST 1, 2) ...... 42V to – 0.3V
Peak Switch Voltage > 10 s (SW 1, 2) ... V
EXTV
POR1, LBO Voltages ................................ 12V to – 0.3V
AUXFB Voltage ........................................ 20V to – 0.3V
AUXDR Voltage ........................................ 28V to – 0.3V
SENSE
V
V
PLL LPF, I
LTC1538-AUX/LTC1539
Consult factory for Military grade parts.
2
OSENSE2
PROG1
SENSE
SENSE
SENSE
SENSE
V
RUN/SS1
RUN/SS2
BOOST 1
CC
OSENSE2
V
+
PROG1
SGND
, V
SFB1
C
Voltage........................................ 10V to – 0.3V
I
I
1, SENSE
OSC
TH1
TH2
+
–
–
+
Voltages ................... INTV
PROG2
1
1
2
2
TH1
T
JMAX
28-LEAD PLASTIC SSOP
10
11
12
13
14
1
2
3
4
5
6
7
8
9
, I
= 125 C,
TH2
G PACKAGE
Voltages .................... INTV
TOP VIEW
+
W
MAXIMUM
Voltages ................... 2.7V to – 0.3V
2, SENSE
JA
= 95 C/ W
IN
28
27
26
25
24
23
22
21
20
19
18
17
16
15
)....................... 36V to – 0.3V
W W
TGL1
SW1
V
BG1
INTV
PGND
BG2
EXTV
SW2
TGL2
BOOST 2
AUXON
AUXFB
AUXDR
–
IN
INFORMATION
1, SENSE
CC
U
CC
/5V
RATINGS
CC
+ 0.3V to – 0.3V
LTC1538CG-AUX
–
LTC1538IG-AUX
W
IN
PART NUMBER
2,
+ 5V to – 5V
U
CC
ORDER
to – 0.3V
U
AUXON, PLLIN, SFB1,
RUN/SS1, RUN/SS2, LBI, Voltages ......... 10V to – 0.3V
Peak Output Current < 10 s (TGL1, 2, BG1, 2) ......... 2A
Peak Output Current < 10 s (TGS1, 2) .............. 250mA
INTV
Operating Temperature Range
Junction Temperature (Note 1) ............................ 125 C
Storage Temperature Range ................ – 65 C to 150 C
Lead Temperature (Soldering, 10 sec)................. 300 C
LTC1538-AUXCG/LTC1539CGW............ O C to 70 C
LTC1538-AUXIG/LTC1539IGW .......... – 40 C to 85 C
SENSE
SENSE
SENSE
V
SENSE
RUN/SS1
RUN/SS2
OSENSE2
V
V
AUXDR
CC
PROG1
PROG2
SGND
POR1
SFB1
C
I
LBO
I
OSC
TH1
LBI
TH2
+
–
–
+
Output Current ........................................ 50mA
1
1
2
2
T
JMAX
36-LEAD PLASTIC SSOP
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
= 125 C,
GW PACKAGE
TOP VIEW
JA
= 85 C/ W
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
PLL LPF
PLLIN
BOOST 1
TGL1
SW1
TGS1
V
BG1
INTV
PGND
BG2
EXTV
TGS2
SW2
TGL2
BOOST 2
AUXON
AUXFB
IN
CC
CC
/5V
PART NUMBER
LTC1539CGW
LTC1539IGW
ORDER