LT4422 Rev. 0
Document overview
- Manufacturer or author: Analog Devices, Inc.
- PDF pages: 18
Technical content
analog.com Rev. 0 2 of 18 TABLE OF CONTENTS
REVISION HISTORY
0 09/24 Initial Release ꟷ
Table 1. Electrical Characteristics
TA = 25°C4, unless otherwise specified. Table 2. Absolute Maximum Ratings 1 All currents into pins are positive; all voltages are referenced to GND unless otherwise noted. formula: TJ = TA + (PD • θJA). limited time determined by the body diode thermal dissipation. 4 Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. conditions for extended periods may affect product reliability.
Figure 3. Pin Configurations Table 3. Pin Descriptions
4 SHDN
for automatic turn-on applications. Do not leave SHDN open.
7 STATUS
suppress undesired reverse turn-off in applications with load transient ringing.
Figure 13. Block Diagram cathodes in an ORing configuration. MOSFET is fully on, and the forward voltage drop is governed by the ohmic relationship of ILOAD⠂RON. through a fast comparator, disabling the low dropout power path. diode is ever-present. External MOSFETs may be added to configure load-switching applications. power path is enabled, the STATUS pull-down is removed.
source, and charging multiple batteries from a single charger. by the LT4422. The common output automatically biases to the higher of the two input voltages. simplicity by leaving STATUS open. required, automatic turn-on is achieved by connecting SHDN to IN. adapter powers the load, and the battery remains protected. Figure 14. Automatic Switchover of Load Between a Battery and a Wall Adapter
both dependent on the current in the STATUS pull-down path. Figure 22. Protecting against Reverse Input Voltage with a Diode
analog.com Rev. 0 15 of 18 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LTC4411 2.6A Ideal Diode, Internal N-Channel MOSFET 2.6V to 5.5V Operation LTC4413 2.6A Dual Ideal Diode, Internal P-Channel MOSFET 1.7V to 5.5V Operation LTC4415 4A Dual Ideal Diode, Internal P-Channel MOSFET 2.6V to 5.5V Operation LT4423 2A Ideal Diode, Internal P-Channel MOSFETS 1.9V to 28V Operation, Reverse Input and Output Protection LTC4358 5A Ideal Diode, Internal N-Channel MOSFET 9V to 26.5V Operation, Reverse Input Protection LTC4376 7A Ideal Diode, Internal N-Channel MOSFET 4V to 40V Operation, Reverse Input Protection LTC4352 Low Voltage Ideal Diode Controller with Monitoring Controls N-Channel MOSFET, 0V to 18V Operation LTC4359 Ideal Diode Controller With Reverse Input Protection 4V to 80V Operation, -40V Input Protection, 150µA IQ LTC4370 Two-Supply Diode-Or Current Balancing Controller Simple Redundant Supply Current Sharing, 0V to 18V Operation LTC4353 Dual Low Voltage Ideal Diode Controller Controls Two N-Channel MOSFETs, 0V to 18V Operation LTC4371 Dual Negative Voltage Ideal Diode-Or Controller And Monitor Controls Two MOSFETs, 220ns Turn-Off, Withstands > ±300V Transients LTC4355 Positive High Voltage Ideal Diode-Or With Input Supply And Fuse Monitors Dual N-channel, 9V to 80V LTC4417 Prioritized Powerpath Controller 2.5V to 36V Operation; Ext P-Channel MOSFET; -42V Reverse Protection LTC4418 Dual Channel Prioritized Powerpath Controller 2.5V to 40V Operation; Ext P-Channel MOSFET; -42V Reverse Protection LTC4419 18V Dual Input Micropower Powerpath Prioritizer 1.8V to 18V Operation; 0.5A Switches; Freshness Seal LTC4421 High Power Prioritized Powerpath Controller 0V to 18V Operation, 60V Tolerant LTC4450 18V, 12A Ideal Diode Internal N-Channel MOSFET LTC4451 40V, 7A Ideal Diode Internal N-Channel MOSFET
Figure 23. 10-Lead Plastic LDFN
Table 4. Ordering Guide
ALL INFORMATION CONTAINED HEREIN IS PROVIDED “AS IS” WITHOUT REPRESENTATION OR WARRANTY. NO RESPONSIBILITY IS ASSUMED BY ANALOG DEVICES FOR ITS USE, NOR FOR ANY INFRINGEMENTS OF PATENTS OR OTHER RIGHTS OF THIRD PARTIES THAT MAY RESULT FROM ITS USE. SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE. NO LICENCE, EITHER EXPRESSED OR IMPLIED, IS GRANTED UNDER ANY ADI PATENT RIGHT, COPYRIGHT, MASK WORK RIGHT, OR ANY OTHER ADI INTELLECTUAL PROPERTY RIGHT RELATING TO ANY COMBINATION, MACHINE, OR PROCESS WHICH ADI PRODUCTS OR SERVICES ARE USED. TRADEMARKS AND REGISTERED TRADEMARKS ARE THE PROPERTY OF THEIR RESPECTIVE OWNERS. ALL ANALOG DEVICES PRODUCTS CONTAINED HEREIN ARE SUBJECT TO RELEASE AND AVAILABILITY. analog.com Rev. 0 18 of 18