900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Linear Technology Electronic Components Datasheet

LTC4227CGN Datasheet

Dual Ideal Diode and Single Hot Swap Controller

No Preview Available !

LTC4227
Dual Ideal Diode and
Single Hot Swap Controller
Features
n Power Path and Inrush Current Control for
Redundant Supplies
n Low Loss Replacement for Power Schottky Diodes
n Allows Safe Hot Swapping from a Live Backplane
n 2.9V to 18V Operating Range
n Controls N-Channel MOSFETs
n Limits Peak Fault Current in ≤1µs
n 0.5µs Ideal Diode Turn-On and Reverse Turn-Off Time
n Adjustable Current Limit with Circuit Breaker
n Smooth Switchover without Oscillation
n Adjustable Current Limit Fault Delay
n Fault and Power Status Output
n 20-Lead 4mm × 5mm QFN and 16-Lead SSOP Packages
Applications
n Redundant Power Supplies and Supply Holdup
n Computer Systems and Servers
n Telecom Networks
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. Hot Swap is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
Description
The LTC®4227 offers ideal diode-OR and Hot Swap™
functions for two power rails by controlling external N-
channel MOSFETs. MOSFETs acting as ideal diodes replace
two high power Schottky diodes and the associated heat
sinks, saving power and board area. A Hot Swap control
MOSFET allows a board to be safely inserted and removed
from a live backplane by limiting inrush current. The supply
output is also protected against short-circuit faults with a
fast acting current limit and internal timed circuit breaker.
The LTC4227 regulates the forward voltage drop across
the MOSFETs to ensure smooth current transfer from one
supply to the other without oscillation. The ideal diodes
turn on quickly to reduce the load voltage droop during
supply switchover. If the input supply fails or is shorted,
a fast turn-off minimizes reverse-current transients.
The LTC4227 allows turn-on/off control, and reports fault
and power good status for the supply.
PART
LTC4227-1
LTC4227-2
LTC4227-3
LTC4227-4
OVERCURRENT FAULT
LATCH OFF
RETRY
LATCH OFF
RETRY
START-UP DELAY
100ms
100ms
1.6ms
1.6ms
Typical Application
Diode-OR with Hot Swap Application
SiR462DP
12V
0.1µF
12V
SiR462DP 0.006Ω Si7336ADP
12V
+
7.6A
0.1µF
100µF
137k CPO1 IN1 DGATE1 CPO2
ON
20k
IN2 DGATE2 SENSE+ SENSEHGATE OUT
LTC4227
FAULT
PWRGD
EN
INTVCC
D2ON
GND
BACKPLANE CARD
CONNECTOR CONNECTOR
0.1µF
TMR
0.1µF
4227 TA01a
For more information www.linear.com/LTC4227
IN1
1V/DIV
IN2
1V/DIV
IIN1
2A/DIV
IIN2
2A/DIV
Smooth Supply Switchover
200ns/DIV
4227 TA01b
422712fa
1


Linear Technology Electronic Components Datasheet

LTC4227CGN Datasheet

Dual Ideal Diode and Single Hot Swap Controller

No Preview Available !

LTC4227
Absolute Maximum Ratings (Notes 1, 2)
Supply Voltages
IN1, IN2................................................... –0.3V to 24V
INTVCC...................................................... –0.3V to 7V
Input Voltages
ON, EN, D2ON ........................................ –0.3V to 24V
TMR........................................–0.3V to INTVCC + 0.3V
SENSE+, SENSE.................................... –0.3V to 24V
Output Voltages
FAULT, PWRGD....................................... –0.3V to 24V
CPO1, CPO2 (Note 3).............................. –0.3V to 35V
DGATE1, DGATE2 (Note 3)...................... –0.3V to 35V
HGATE (Note 4)...................................... –0.3V to 35V
OUT........................................................ –0.3V to 24V
Average Currents
FAULT, PWRGD.....................................................5mA
INTVCC..................................................................1mA
Operating Temperature Range
LTC4227C................................................. 0°C to 70°C
LTC4227I..............................................–40°C to 85°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
GN Package....................................................... 300°C
Pin Configuration
TOP VIEW
SENSE1
SENSE+ 2
IN1 3
INTVCC 4
GND 5
IN2 6
20 19 18 17
16 NC
15 ON
14 EN
21
13 TMR
12 D2ON
11 FAULT
7 8 9 10
UFD PACKAGE
20-LEAD (4mm × 5mm) PLASTIC QFN
TJMAX = 125°C, θJA = 34°C/W
EXPOSED PAD (PIN 21) PCB GND CONNECTION OPTIONAL
TOP VIEW
DGATE1 1
SENSE2
SENSE+ 3
IN1 4
INTVCC 5
GND 6
IN2 7
DGATE2 8
16 CPO1
15 HGATE
14 OUT
13 ON
12 TMR
11 D2ON
10 PWRGD
9 CPO2
GN PACKAGE
16-LEAD PLASTIC SSOP NARROW
TJMAX = 125°C, θJA = 110°C/W
422712fa
2
For more information www.linear.com/LTC4227


Part Number LTC4227CGN
Description Dual Ideal Diode and Single Hot Swap Controller
Maker Linear
PDF Download

LTC4227CGN Datasheet PDF






Similar Datasheet

1 LTC4227CGN Dual Ideal Diode and Single Hot Swap Controller
Linear





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy