LTC4228-1/LTC4228-2
22
422812f
UFD Package
28-Lead Plastic QFN (4mm × 5mm)
(Reference LTC DWG # 05-08-1712 Rev B)
package DescripTion
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
4.00 ± 0.10
(2 SIDES)
2.50 REF
5.00 ± 0.10
(2 SIDES)
NOTE:
1. DRAWING PROPOSED TO BE MADE A JEDEC PACKAGE OUTLINE MO-220 VARIATION (WXXX-X).
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
ON THE TOP AND BOTTOM OF PACKAGE
PIN 1
TOP MARK
(NOTE 6)
0.40 ± 0.10
27 28
1
2
BOTTOM VIEW—EXPOSED PAD
3.50 REF
0.75 ± 0.05
R = 0.115
TYP
R = 0.05
TYP
PIN 1 NOTCH
R = 0.20 OR 0.35
× 45° CHAMFER
0.25 ± 0.05
0.50 BSC
0.200 REF
0.00 – 0.05
(UFD28) QFN 0506 REV B
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
0.70 ±0.05
0.25 ±0.05
0.50 BSC
2.50 REF
3.50 REF
4.10 ± 0.05
5.50 ± 0.05
2.65 ± 0.05
3.10 ± 0.05
4.50 ± 0.05
PACKAGE OUTLINE
2.65 ± 0.10
3.65 ± 0.10
3.65 ± 0.05
LTC4228-1/LTC4228-2
23
422812f
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 representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
package DescripTion
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
.386 – .393*
(9.804 – 9.982)
GN28 REV B 0212
1 2
3
4
5
6
7
8 9 10 11 12
.229 – .244
(5.817 – 6.198)
.150 – .157**
(3.810 – 3.988)
202122232425262728
19
18
17
13 14
16
15
.016 – .050
(0.406 – 1.270)
.015 ±.004
(0.38 ±0.10)
× 45°
0° – 8° TYP
.0075 – .0098
(0.19 – 0.25)
.0532 – .0688
(1.35 – 1.75)
.008 – .012
(0.203 – 0.305)
TYP
.004 – .0098
(0.102 – 0.249)
.0250
(0.635)
BSC
.033
(0.838)
REF
.254 MIN
RECOMMENDED SOLDER PAD LAYOUT
.150 – .165
.0250 BSC.0165 ±.0015
.045 ±.005
* DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
INCHES
(MILLIMETERS)
NOTE:
1. CONTROLLING DIMENSION: INCHES
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
4. PIN 1 CAN BE BEVEL EDGE OR A DIMPLE
GN Package
28-Lead Plastic SSOP (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1641 Rev B)
LTC4228-1/LTC4228-2
24
422812f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
FAX: (408) 434-0507
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2012
LT 0812 • PRINTED IN USA
relaTeD parTs
Typical applicaTion
Plug-In Card Diode-OR Application with Hot Swap First Followed by Ideal Diode Control
PART NUMBER DESCRIPTION COMMENTS
LTC1421 Dual Channel, Hot Swap Controller Operates from 3V to 12V, Supports –12V, SSOP-24
LTC1645 Dual Channel, Hot Swap Controller Operates from 3V to 12V, Power Sequencing, SO-8 or SO-14
LTC1647-1/LTC1647-2/
LTC1647-3
Dual Channel, Hot Swap Controller Operates from 2.7V to 16.5V, SO-8 or SSOP-16
LTC4210 Single Channel, Hot Swap Controller Operates from 2.7V to 16.5V, Active Current Limiting, SOT23-6
LTC4211 Single Channel, Hot Swap Controller Operates from 2.7V to 16.5V, Multifunction Current Control, MSOP-8 or MSOP-10
LTC4215 Single Channel, Hot Swap Controller Operates from 2.9V to 15V, I
2
C Compatible Monitoring, SSOP-16 or QFN-24
LTC4216 Single Channel, Hot Swap Controller Operates from 0V to 6V, Active Current Limiting, MSOP-10 or DFN-12
LTC4218 Single Channel, Hot Swap Controller Operates from 2.9V to 26.5V, Active Current Limiting, SSOP-16 or DFN-16
LTC4221 Dual Channel, Hot Swap Controller Operates from 1V to 13.5V, Multifunction Current Control, SSOP-16
LTC4222 Dual Channel, Hot Swap Controller Operates from 2.9V to 29V, I
2
C Compatible Monitoring, SSOP-36 or QFN-32
LTC4223 Dual Supply Hot Swap Controller Controls 12V and 3.3V, Active Current Limiting, SSOP-16 or DFN-16
LTC4224 Dual Channel, Hot Swap Controller Operates from 2.7V to 6V, Active Current Limiting, MSOP-10 or DFN-10
LTC4225 Dual Ideal Diode and Hot Swap Controller Operates from 2.9V to 18V, Controls Four N-Channels, GN-24 or QFN-24
LTC4227 Dual Ideal Diode and Single Hot Swap
Controller
Operates from 2.9V to 18V, Controls Three N-Channels, GN-16 or QFN-20
LTC4352 Low Voltage Ideal Diode Controller Operates from 0V to 18V, Controls N-Channel, MSOP-12 or DFN-12
LTC4354 Negative Voltage Diode-OR Controller and
Monitor
80V Operation, Controls Two N-Channels, SO-8 or DFN-8
LTC4355 Positive High Voltage Ideal Diode-OR and
Monitor
Operates from 9V to 80V, Controls Two N-Channels, S0-16 or DFN-14
LTC4357 Positive High Voltage Ideal Diode
Controller
Operates from 9V to 80V, Controls N-Channel, MSOP-8 or DFN-6
LTC4358 5A Ideal Diode Operates from 9V to 26.5V, On-Chip N-Channel, TSSOP-16 or DFN-14
CPO1
ON1
EN1
V
IN2
5V
ON2
EN2
INTV
CC
GND
C1
0.1µF
C
CP1
0.1µF
Z1
SMAJ7A
C
CP2
0.1µF
C
T2
0.1µF
C
L
100µF
5V
5A
C
T1
0.1µF
BACKPLANE
CONNECTOR
CARD
CONNECTOR
422812 TA02
IN1 SENSE1
SENSE1
+
HGATE1
M
H1
Si7790DP
M
D1
Si7790DP
LTC4228
R
S1
0.006Ω
M
H2
Si7790DP
M
D2
Si7790DP
R
S2
0.006Ω
DGATE1 OUT1
CPO2 IN2 SENSE2
SENSE2
+
HGATE2 DGATE2 OUT2
STATUS1
FAULT1
PWRGD1
TMR1
TMR2
PWRGD2
FAULT2
STATUS2
Z2
SMAJ7A
V
IN1
5V
PWREN
+
R1
10k

LTC4228IGN-1#TRPBF

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
Hot Swap Voltage Controllers 2x Ideal Diode & Hot Swap Cntr
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union