900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Analog Devices Semiconductor Electronic Components Datasheet

LTC4419CMSE Datasheet

18V Dual Input Micropower PowerPath Prioritizer

No Preview Available !

LTC4419
18V Dual Input Micropower
PowerPath Prioritizer
FEATURES
DESCRIPTION
nn Selects Highest Priority Valid Supply from Two Inputs
nn Wide 1.8V to 18V Operating Range
nn Internal Dual 2Ω, 0.5A Switches
nn Low 3.6µA Operating Current
nn Low 320nA V2 Current When V1 Connected to OUT
nn Blocks Reverse and Cross Conduction Currents
nn Reverse Supply Protection to –15V
nn V2 Freshness Seal/Ship Mode
nn ±1.5% Accurate Adjustable Switchover Threshold
nn Two Auxiliary ±2.3% Accurate Voltage Comparators
nn Overcurrent and Thermal Protection
nn Thermally Enhanced 10-Pin 3mm × 3mm DFN
and 12-Lead Exposed Pad MSOP Packages
APPLICATIONS
nn Low Power Battery Backup
nn Portable Equipment
nn Point-of-Sale (POS) Equipment
The LTC®4419 is a dual input monolithic PowerPath™
prioritizer with low operating current, that provides backup
switchover for keeping critical circuitry alive during brown
out and power loss conditions. Unlike diode-OR products,
little current is drawn from the inactive supply even if its
voltage is greater than the active supply.
Internal 2Ω, current limited PMOS switches provide power
path selection from a primary input (V1) or a backup input
(V2) to the output. An adjustable voltage monitor set via
an external resistive divider provides flexibility in setting
the V1 to V2 switchover threshold. When primary input V1
drops, the ADJ monitor input causes OUT to be switched
to V2. Fast non-overlap switchover circuitry prevents both
reverse and cross conduction while minimizing output
droop.
The LTC4419 has two auxiliary comparators with open-
drain outputs that provide flexible voltage monitoring. The
V2ON output indicates if V2 is powering OUT. Freshness
seal mode prevents V2 battery discharge during storage
or shipment.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
PowerPath and ThinSOT are trademarks of Analog Devices, Inc. All other trademarks are the
property of their respective owners.
TYPICAL APPLICATION
5V
WALL
ADAPTER
V1
OUT
C1
10µF
1M
ADJ CMPOUT1
237k
CMP1 CMPOUT2
121k
LTC4419
OUT
1M 1M
V1UV
V2UV
+
7.4V
Li-Ion
V2
4.02M
V2ON
CMP2
280k
GND
4419 TA01a
V2ON
SWITCHOVER
THRESHOLD: V1 < 4V (V1 FALLING)
V1UV THRESHOLD: V1 < 4.4V (V1 FALLING)
V2UV THRESHOLD: V2 < 6V (V2 FALLING)
Typical Switchover Waveforms
V2
2V/DIV
V1
2V/DIV
OUT
COUT = 10µF
ILOAD = 100mA
SWITCHOVER
THRESHOLD
50µs/DIV
4419 TA01b
For more information www.linear.com/LTC4419
4419fa
1


Analog Devices Semiconductor Electronic Components Datasheet

LTC4419CMSE Datasheet

18V Dual Input Micropower PowerPath Prioritizer

No Preview Available !

LTC4419
ABSOLUTE MAXIMUM RATINGS (Notes 1, 2)
Input Supply Voltage
V1, V2.......................................................–15V to 24V
OUT........................................................ –0.3V to 24V
OUT – V2..................................................–24V to 39V
OUT – V1..................................................–24V to 39V
Input Voltages
ADJ, CMP1, CMP2 (Note 3) ................... –0.3V to 24V
Output Voltages
CMPOUT1, CMPOUT2, V2ON (Note 3) ... –0.3V to 24V
Pin Currents (Note 2)
ADJ, CMP1, CMP2, CMPOUT1, CMPOUT2,
V2ON.................................................................. –1mA
Operating Ambient Temperature Range
LTC4419C................................................. 0°C to 70°C
LTC4419I..............................................–40°C to 85°C
Junction Temperature (Notes 4, 5)......................... 125°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
MSOP Package.................................................. 300°C
PIN CONFIGURATION
TOP VIEW
V1 1
CMP1 2
ADJ 3
GND 4
CMPOUT1 5
10 V2
9 CMP2
11
GND
8 OUT
7 V2ON
6 CMPOUT2
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
TJMAX = 125°C, θJA = 43°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
TOP VIEW
V1 1
12 V2
NC 2
11 NC
CMP1 3
13
10 CMP2
ADJ 4
GND
9 OUT
GND 5
8 V2ON
CMPOUT1 6
7 CMPOUT2
MSE PACKAGE
12-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 40°C/W
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION http://www.linear.com/product/LTC4419#orderinfo
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4419CDD#PBF
LTC4419CDD#TRPBF LGMS
10-Lead (3mm × 3mm) Plastic DFN
0°C to 70°C
LTC4419IDD#PBF
LTC4419IDD#TRPBF
LGMS
10-Lead (3mm × 3mm) Plastic DFN
–40°C to 85°C
LTC4419CMSE#PBF
LTC4419CMSE#TRPBF 4419
12-Lead Plastic Exposed Pad MSOP
0°C to 70°C
LTC4419IMSE#PBF
LTC4419IMSE#TRPBF 4419
12-Lead Plastic Exposed Pad MSOP
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/. Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
4419fa
2
For more information www.linear.com/LTC4419


Part Number LTC4419CMSE
Description 18V Dual Input Micropower PowerPath Prioritizer
Maker Analog Devices
PDF Download

LTC4419CMSE Datasheet PDF






Similar Datasheet

1 LTC4419CMSE 18V Dual Input Micropower PowerPath Prioritizer
Analog Devices





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