LTC3729EG#PBF Linear Technology, LTC3729EG#PBF Datasheet - Page 28
![IC SW REG SYNC STEP-DOWN 28-SSOP](/photos/6/59/65971/161-28-ssop_sml.jpg)
LTC3729EG#PBF
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
Datasheet
1.LTC3729EGPBF.pdf
(30 pages)
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
LTC3729
PACKAGE DESCRIPTION
5.50 ±0.05
28
4.10 ±0.05
(4 SIDES)
3.50 REF
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
NOTE:
1. DRAWING PROPOSED TO BE A JEDEC PACKAGE OUTLINE
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
M0-220 VARIATION WHHD-(X) (TO BE APPROVED)
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.20mm ON ANY SIDE
ON THE TOP AND BOTTOM OF PACKAGE
RECOMMENDED SOLDER PAD LAYOUT
PIN 1
TOP MARK
(NOTE 6)
3.45 ± 0.05
5.00 ± 0.10
(4 SIDES)
3.45 ± 0.05
0.50 BSC
0.25 ± 0.05
(For purposes of clarity, drawings are not to scale)
(Reference LTC DWG # 05‑08‑1693 Rev D)
32-Lead Plastic QFN (5mm × 5mm)
0.70 ±0.05
PACKAGE OUTLINE
UH Package
0.75 ± 0.05
(4-SIDES)
3.50 REF
0.00 – 0.05
0.200 REF
R = 0.05
TYP
BOTTOM VIEW—EXPOSED PAD
R = 0.115
3.45 ± 0.10
TYP
3.45 ± 0.10
31
0.50 BSC
0.25 ± 0.05
32
PIN 1 NOTCH R = 0.30 TYP
OR 0.35 × 45° CHAMFER
(UH32) QFN 0406 REV D
1
2
0.40 ± 0.10
3729fb