ltc3729euh-trpbf Linear Technology Corporation, ltc3729euh-trpbf Datasheet - Page 2

• Manufacturer Part Number: ltc3729euh-trpbf
• Description: 550khz, Polyphase, High Efficiency, Synchronous Step-down Switching Regulator
• Manufacturer: Linear Technology Corporation

PACKAGE/ORDER I FOR ATIO
LTC3729
ABSOLUTE AXI U RATI GS
Input Supply Voltage (V
Topside Driver Voltages (BOOST1,2) .........42V to – 0.3V
Switch Voltage (SW1, 2) .............................36V to – 5 V
SENSE1
SENSE2
EAIN, V
RUN/SS, PGOOD Voltages ...........................7V to – 0.3V
Boosted Driver Voltage (BOOST-SW) ..........7V to – 0.3V
PLLFLTR, PLLIN, CLKOUT, PHASMD,
V
ELECTRICAL CHARACTERISTICS
Consult LTC Marketing for parts specified with wider operating temperature ranges.
temperature range, otherwise specifications are at T
SYMBOL
Main Control Loop
V
V
I
V
2
INEAIN
EAIN
SENSEMAX
LOADREG
DIFFOUT
SENSE1
SENSE1
PHASMD
SENSE2
SENSE2
PLLFLTR
V
RUN/SS
DIFFOUT
PLLIN
SGND
V
V
EAIN
OS –
OS +
I
TH
OS
+
+
–
–
+
–
T
, SENSE2
Voltages ................................ INTV
JMAX
+
Voltages ........................ (1.1)INTV
28-LEAD PLASTIC SSOP
10
11
12
13
14
PARAMETER
Regulated Feedback Voltage
Maximum Current Sense Threshold
Feedback Current
Output Voltage Load Regulation
1
2
3
4
5
6
7
8
9
, V
= 125 C,
OS
G PACKAGE
TOP VIEW
–
, EXTV
W
+
JA
, SENSE1
= 95 C/W
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CC
IN
).........................36V to – 0.3V
, INTV
CLKOUT
TG1
SW1
BOOST1
V
BG1
EXTV
INTV
PGND
BG2
BOOST2
SW2
TG2
PGOOD
W W
IN
–
CC
CC
,
U
CC
,
ORDER PART
LTC3729EG
NUMBER
W
CONDITIONS
(Note 3); I
V
V
(Note 3)
(Note 3)
Measured in Servo Loop; I
Measured in Servo Loop; I
SENSE
SENSE1, 2
U
CC
CC
A
= 25 C. V
–
to – 0.3V
to – 0.3V
= 5V
TH
= 5V
The
Voltage = 1.2V
U
(Note 1)
IN
PLLFLTR
PHASMD
V
denotes the specifications which apply over the full operating
= 15V, V
DIFFOUT
PLLIN
SGND
EAIN
V
OS
I
I
Peak Output Current <1 s(TGL1,2, BG1,2) ................ 5A
INTV
Operating Ambient Temperature
Junction Temperature (Note 2) ............................. 125 C
Storage Temperature Range ................. – 65 C to 150 C
Lead Temperature (Soldering, 10 sec)
(G Package Only) .................................................. 300 C
TH
TH
–
TH
TH
Range (Note 6) ................................... – 40 C to 85 C
1
2
3
4
5
6
7
8
Voltage = 0.7V
Voltage = 2V
Voltage ................................................2.7V to – 0.3V
RUN/SS
32-LEAD 5mm 5mm PLASTIC QFN
CC
32 31 30 29 28 27 26 25
9 10 11 12 13
(MUST BE SOLDERED TO PCB)
RMS Output Current ................................ 50mA
EXPOSED PAD IS SGND
= 5V unless otherwise noted.
UH PACKAGE
JA
TOP VIEW
= 34 C/W
14 15 16
24
23
22
21
20
19
18
17
0.792
MIN
62
65
BOOST1
V
BG1
EXTV
INTV
PGND
BG2
BOOST2
IN
CC
CC
0.800
– 0.1
TYP
0.1
– 5
75
75
ORDER PART
LTC3729EUH
MARKING
NUMBER
UH PART
0.808
MAX
– 0.5
– 50
0.5
88
85
3729
sn3729 3729fas
UNITS
mV
mV
nA
%
%
V