LTC3729EG#PBF Linear Technology, LTC3729EG#PBF Datasheet - Page 2

• Manufacturer Part Number: LTC3729EG#PBF
• Description: IC SW REG SYNC STEP-DOWN 28-SSOP
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3729EG#PBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 5 V
• Current - Output: 5A
• Frequency - Switching: 1.1MHz
• Voltage - Input: 4 ~ 36 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Primary Input Voltage: 36V
• No. Of Outputs: 1
• Output Current: 5A
• No. Of Pins: 28
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 1 - Unlimited
• Supply Voltage Range: 4V To 36V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

ABSOLUTE MAXIMUM RATINGS
PIN CONFIGURATION
LTC3729
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
ORDER INFORMATION
LEAD FREE FINISH
LTC3729EG#PBF
LTC3729EUH#PBF
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non‑standard lead based finish parts.
For more information on lead free part marking, go to:
For more information on tape and reel specifications, go to:
2
DIFFOUT
OS
+
–
, SENSE2
Voltages ..............INTV
Voltages .........................(1.1)INTV
+
, V
OS
SENSE1
SENSE1
PHASMD
SENSE2
SENSE2
PLLFLTR
V
RUN/SS
–
DIFFOUT
PLLIN
SGND
, EXTV
V
V
EAIN
OS
OS
+
I
TH
, SENSE1
+
–
–
+
–
+
T
JMAX
TAPE AND REEL
LTC3729EG#TRPBF
LTC3729EUH#TRPBF
28-LEAD PLASTIC SSOP
10
11
12
13
14
1
2
3
4
5
6
7
8
9
IN
CC
= 125°C, θ
) ......................... 36V to –0.3V
, INTV
G PACKAGE
TOP VIEW
–
,
JA
CC
CC
= 95°C/W
,
to –0.3V for V
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CLKOUT
TG1
SW1
BOOST1
V
BG1
EXTV
INTV
PGND
BG2
BOOST2
SW2
TG2
PGOOD
IN
http://www.linear.com/leadfree/
CC
CC
PART MARKING
LTC3729
3729
CC
http://www.linear.com/tapeandreel/
to –0.3V
IN
≥ 7V
(Note 1)
V
I
Peak Output Current <1µs(TGL1,2, BG1,2) .................5A
INTV
Operating Ambient Temperature
Range (Note 6) ......................................... –40°C to 85°C
Junction Temperature (Note 2) ............................. 125°C
Storage Temperature Range ................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
TH
DIFFOUT
(G Package Only) .............................................. 300°C
PACKAGE DESCRIPTION
28‑Lead Plastic SSOP
32‑Lead (5mm × 5mm)Plastic QFN
Voltage ............................................... 2.7V to –0.3V
CC
PLLFLTR
PHASMD
RMS Output Current ................................. 50mA
V
DIFFOUT
Voltages .............V
PLLIN
SGND
EAIN
V
OS
I
EXPOSED PAD IS GND, MUST BE SOLDERED TO PCB
TH
–
1
2
3
4
5
6
7
8
32-LEAD 5mm × 5mm PLASTIC QFN
32 31 30 29 28 27 26 25
9 10 11 12 13
UH PACKAGE
θ
JA
TOP VIEW
= 34°C/W
IN
– 2V to –0.3V for V
14 15 16
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
24
23
22
21
20
19
18
17
BOOST1
V
BG1
EXTV
INTV
PGND
BG2
BOOST2
IN
CC
CC
IN
< 7V
3729fb