LTC4253AIUF-ADJ#TRPBF Linear Technology, LTC4253AIUF-ADJ#TRPBF Datasheet - Page 31

• Manufacturer Part Number: LTC4253AIUF-ADJ#TRPBF
• Description: IC HOT SWAP CONTRLR -48V 20-QFN
• Manufacturer: Linear Technology
• Type: Hot-Swap Controllerr

Specifications of LTC4253AIUF-ADJ#TRPBF

• Applications: General Purpose
• Internal Switch(s): No
• Voltage - Supply: 8.2 V ~ 14.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-WFQFN Exposed Pad
• Family Name: LTC4253A-ADJ
• Package Type: QFN EP
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 4mm
• Product Length (mm): 4mm
• Mounting: Surface Mount
• Pin Count: 20
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PACKAGE DESCRIPTIO
4.50 ± 0.05
3.10 ± 0.05
2.45 ± 0.05
(4 SIDES)
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
NOTE:
1. DRAWING IS PROPOSED TO BE MADE A JEDEC PACKAGE OUTLINE MO-220
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
VARIATION (WGGD-1)—TO BE APPROVED
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
ON THE TOP AND BOTTOM OF PACKAGE
.0075 – .0098
(0.19 – 0.25)
.254 MIN
.0165 ± .0015
NOTE:
1. CONTROLLING DIMENSION: INCHES
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
RECOMMENDED SOLDER PAD LAYOUT
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
(0.406 – 1.270)
.016 – .050
0.50 BSC
0.25 ±0.05
(MILLIMETERS)
0.70 ±0.05
U
INCHES
PACKAGE
OUTLINE
20-Lead Plastic SSOP (Narrow .150 Inch)
0° – 8° TYP
.045 ±.005
.150 – .165
20-Lead Plastic QFN (4mm × 4mm)
(0.38 ± 0.10)
.015 ± .004
(Reference LTC DWG # 05-08-1710)
(Reference LTC DWG # 05-08-1641)
.0250 BSC
× 45°
PIN 1
TOP MARK
(NOTE 6)
UF Package
GN Package
4.00 ± 0.10
(4 SIDES)
(5.817 – 6.198)
.229 – .244
(0.203 – 0.305)
.008 – .012
.0532 – .0688
(1.35 – 1.75)
TYP
20
1
19
2 3
18
0.75 ± 0.05
(8.560 – 8.738)
17
4
.337 – .344*
16
5 6 7
15 14 13 12
(0.635)
.0250
BSC
0.200 REF
0.00 – 0.05
2.45 ± 0.10
(4-SIDES)
8 9 10
11
LTC4253A-ADJ
(0.102 – 0.249)
.004 – .0098
(3.810 – 3.988)
R = 0.115
GN20 (SSOP) 0204
.150 – .157**
(1.473)
BOTTOM VIEW—EXPOSED PAD
.058
REF
TYP
19
20
0.50 BSC
0.25 ± 0.05
31
0.38 ± 0.10
1
2
(UF20) QFN 10-04
PIN 1 NOTCH
R = 0.30 TYP
4253a-adjf