PowerPath, Ideal Diodes & Load Switches

Analog Devices’ PowerPath, ideal diode controllers, and load switches protect power supplies by minimizing reverse currents back into the supply and shoot-through currents between supplies. Selection of the power source can be either by the highest voltage or highest priority.

For highest voltage selections, ideal diodes are employed in a diode-OR configuration. Applications include redundant supply ORing, supply holdup during input brownout, and reverse battery protection. For selection by highest priority, a prioritized PowerPath controller provides the most general-purpose and flexible solution. A prioritizer powers the system from the highest priority input that is within its valid voltage window. Applications occur in battery-equipped portable products, memory modules with capacitive holdup, and server subsystems with main and auxiliary supplies. Load switches provide reverse current flow protection for space constrained designs.
Product Selection Table

PowerPath, Ideal Diodes & Load Switches

  Hold Shift Key for secondary sorting
SortOrderPart## of ChannelsVin
(min)
(V)
Vin
(max)
(V)
Typical Current Capability
(typ)
(A)
Ideal DiodeTotal Quiescent Current
(typ)
(A)
CommentsPrice (1000+)
($ US)
1LTC4373 1 2.5 80 20 External, N-Channel, Single Low Quiescent Current Ideal Diode Controller-
2LTC4372 1 2.5 80 20 External, N-Channel, Single Low Quiescent Current Ideal Diode Controller-
3LTC4421 2 3 36 20 Dual, N-Channel 530µ High Power Prioritized PowerPath Controller $3.95 (LTC4421CG#PBF)
4LTC4376 1 4 40 7 Internal, N-Channel, Single 150µ 7A Ideal Diode with Reverse Input Protection $2.55 (LTC4376CDHD#PBF)
5LTC4418 2 2.5 40 5 Dual, External, P-Channel 26µ Dual Channel Prioritized PowerPath Controller $2.45 (LTC4418CUF#PBF)
6LT8672 1 3 42 20 External, N-Channel, Single 20µ Active Rectifier Controller with Reverse Protection $1.95 (LT8672EDDB#TRPBF)
7LTC4420 2 1.8 18 500m Dual, Internal, P-Channel 3.6µ 18V Dual Input Micropower PowerPath Prioritizer with Backup Supply Monitoring $2.95 (LTC4420CDD#PBF)
8LTC4419 2 1.8 18 500m Dual, Internal, P-Channel 3.6µ 18V Dual Input Micropower PowerPath Prioritizer $2.75 (LTC4419CDD#PBF)
9LTC3126 2 2.4 42 2.5 Dual, Internal, N-Channel 5.5µ 42V, 2.5A Synchronous Step-Down Regulator with No-Loss Input PowerPath $3.95 (LTC3126EUFD#PBF)
10LTC4371 2 -500 -4.5 20 Dual, External, N-Channel 300µ Dual Negative Voltage Ideal Diode-OR Controller and Monitor $2.50 (LTC4371CDD#PBF)
11LTC4236 2 2.9 18 20 Dual, External, N-Channel 3.58m Dual Ideal Diode-OR and Single Hot Swap Controller with Current Monitor $4.25 (LTC4236CUFD-1#PBF)
12LTC3118 1 2.2 18 2 Dual, Internal, N-Channel 50µ 18V, 2A Buck-Boost DC/DC Converter with Low-Loss Dual Input PowerPath $5.75 (LTC3118EUFD#PBF)
13LTC4235 2 9 14 20 Dual, External, N-Channel 3.64m Dual 12V Ideal Diode-OR and Single Hot Swap Controller with Current Monitor $3.95 (LTC4235CUFD-1#PBF)
14ADP1290 1 2.3 13.2 2 Load Switch 15µ 12 V, 2 A Logic Controlled High-Side Power Switch $0.88 (ADP1290ACBZ-R7)
15LTC4229 1 2.9 18 20 External, N-Channel, Single 2.53m Ideal Diode and Hot Swap Controller $2.95 (LTC4229CG#PBF)
16LT4321 2 20 80 20 Dual Bridges with External N-Channel 500µ PoE Ideal Diode Bridge Controller $1.48 (LT4321IUF#PBF)
17ADP1190A 4 1.4 3.6 500m Load Switch- Integrated 500 mA Load Switch with Quad Signal Switch $0.60 (ADP1190AACBZ-R7)
18LT4320-1 1 9 72 20 Single Bridge with External N-Channel 1.3m Ideal Diode Bridge Controller - DC to 600Hz $3.25 (LT4320IMSE-1#PBF)
19LT4320 1 9 72 20 Single Bridge with External N-Channel 1.3m Ideal Diode Bridge Controller - DC to 60Hz $2.95 (LT4320IDD#PBF)
20ADP1196 1 0 5.5 3 Load Switch 26µ 5 V, 3 A Logic Controlled High-Side or Low-Side Load Switch $0.50 (ADP1196ACBZ-02-R7)
21LTC4417Reference Circuit Available 3 2.5 36 5 External, P-Channel, Triple 28µ Prioritized PowerPath Controller with -42V Reverse Input Protection $3.05 (LTC4417CUF#PBF)
22ADP196Reference Circuit Available 1 1.8 5.5 3 Load Switch 25µ 5 V, 3 A, Logic Controlled High-Side Power Switch $0.50 (ADP196ACBZ-01-R7)
23ADP1190 4 1.4 3.6 500m Load Switch- Integrated 500 mA Load Switch with Quad Signal Switch $0.60 (ADP1190ACBZ-R7)
24LTC4228 2 2.9 18 20 Dual, External, N-Channel 2.95m Dual ideal diode and hot swap controller, -1 Latchoff, -2 Auto-Retry $3.59 (LTC4228CGN-1#PBF)
25LTC4370 2 0 18 20 Dual, External, N-Channel 2.25m Two-Supply Diode-OR Current Balancing Controller $4.95 (LTC4370CDE#PBF)
26LTC4364 1 4 80 20 External, N-Channel, Single 483µ Ride-through protection with ideal diode, Adjustable output-clamp and circuit-breaker with timer, Sh $3.45 (LTC4364CDE-1#PBF)
27LTC4359 1 4 80 20 External, N-Channel, Single 150µ Ideal Diode Controller with -40V Reverse Input Protection $2.10 (LTC4359CDCB#TRPBF)
28LTC4353 2 0 18 20 Dual, External, N-Channel 1.6m Dual Low Voltage Ideal Diode Controller $3.45 (LTC4353CDE#PBF)
29ADP199 1 900m 3.6 500m Load Switch 3.6 V, 500 mA Logic Controlled High-Side Load Switch $0.32 (ADP199ACBZ-R7)
30LTC4415Reference Circuit Available 2 1.7 5.5 4 Dual, Internal, P-Channel 44µ Dual 4A Ideal Diodes with Adjustable Current Limit, Imon Outputs, Overcurrent Warning, Thermal Warni $2.95 (LTC4415EDHC#PBF)
31LTC3226 1 2.5 5.5 315m External, P-Channel, Single 55µ 2-Cell Supercapacitor Charger with Backup PowerPath Controller $2.67 (LTC3226EUD#PBF)
32ADP198 1 1.65 6.5 1 Load Switch 2.5µ Logic Controlled, 1 A, High-Side Load Switch with Reverse Current Blocking $0.35 (ADP198ACBZ-11-R7)
33ADP194 1 1.1 3.6 500m Load Switch- Logic Controlled, High-Side Power Switch $0.32 (ADP194ACBZ-R7)
34LTC4227 2 2.9 18 20 Dual, External, N-Channel 3.3m Dual ideal diode-OR and single hot swap controller, Options for latchoff/auto-Retry and 100ms/1.6ms $3.41 (LTC4227CGN-1#PBF)
35ADP197 1 1.8 5.5 3 Load Switch 18µ 5 V, 3 A Logic Controlled High-Side Power Switch $0.46 (ADP197ACBZ-01-R7)
36ADP195Reference Circuit Available 1 1.1 3.6 1.1 Load Switch Logic Controlled, High-Side Power Switch with Reverse Current Blocking $0.35 (ADP195ACBZ-R7)
37ADP191 1 1.1 3.6 500m Load Switch- Logic Controlled, High-Side Power Switch with Reverse Current Blocking $0.32 (ADP191ACBZ-R7)
38ADP190Reference Circuit Available 1 1.2 3.6 500m Load Switch- Logic Controlled, High-Side Power Switch with Reverse Current Blocking $0.33 (ADP190ACBZ-R7)
39LTC4358Reference Circuit Available 1 9 26.5 5 Internal, N-Channel, Single 780µ 5A Ideal Diode $2.10 (LTC4358CDE#PBF)
40LTC4352Reference Circuit Available 1 0 18 20 External, N-Channel, Single 1.47m Low Voltage Ideal Diode Controller with Monitoring $2.50 (LTC4352CDD#PBF)
41LTC4357Reference Circuit Available 1 9 80 20 External, N-Channel, Single 930µ Positive High Voltage Ideal Diode Controller $1.70 (LTC4357CDCB#TRPBF)
42LTC4355 2 9 80 20 Dual, External, N-Channel 2.6m Positive High Voltage Dual Ideal Diode-OR with Input Supply and Fuse Monitors $2.50 (LTC4355CDE#PBF)
43LTC4416 2 3.6 36 20 Dual, External, P-Channel 70µ 36V, Low Loss Dual PowerPath Controllers for Large PFETs $2.45 (LTC4416EMS#PBF)
44LTC4413-2 2 2.6 5.5 2.6 Dual, Internal, P-Channel 40µ Dual 2.6A, 2.5V to 5.5V Fast Ideal Diodes in a 3mm x 3mm DFN, Overvoltage Protection Sensor with Dri $2.25 (LTC4413EDD-2#PBF)
45LTC4413-1 2 2.6 5.5 2.6 Dual, Internal, P-Channel 40µ Dual 2.6A, 2.5V to 5.5V Fast Ideal Diodes in a 3mm x 3mm DFN $2.15 (LTC4413EDD-1#PBF)
46LTC2952 2 2.7 28 5 Dual, External, P-Channel 65µ Pushbutton PowerPath Controller with Supervisor $2.95 (LTC2952CF#PBF)
47LTC4414 1 3 36 20 External, P-Channel, Single 36µ 36V, Low Loss PowerPath Controller for Large PFETs $1.85 (LTC4414EMS8#PBF)
48LTC4413 2 2.5 5.5 2.6 Dual, Internal, P-Channel 25µ Dual 2.6A, 2.5V to 5.5V, Ideal Diodes in 3mm × 3mm DFN $2.15 (LTC4413EDD#PBF)
49LTC4354 2 -80 -4.5 10 Dual, External, N-Channel 1.2m Dual Negative Voltage Ideal Diode-OR Controller and Monitor $1.95 (LTC4354CS8#PBF)
50LTC4412HV 1 2.5 36 5 External, P-Channel, Single 18µ Rugged version of the LTC4412: Vin up to 36V $1.76 (LTC4412HVIS6#TRPBF)
51LTC4411 1 2.6 5.5 2.6 Internal, P-Channel, Single 40µ Integrated switch: Replaces power supply OR $1.66 (LTC4411ES5#TRPBF)
52LT4351 1 1.2 18 10 External, N-Channel 1.41m MOSFET Diode-OR Controller $2.50 (LT4351CMS#PBF)
53LTC4412Reference Circuit Available 1 2.5 28 5 External, P-Channel, Single 15µ Replaces power supply OR $1.36 (LTC4412ES6#TRPBF)
54LTC4410 1 4.35 5.5 500m External, P-Channel, Single 500µ Allows faster charging from USB port and complies with USB spec. $1.26 (LTC4410ES6#TRPBF)
55LTC1473L 2 4.75 30 5 Dual, External, N-Channel 100µ Power path management for multiple DC sources. 3.3V to 10V input. all N-Channel MOSFETs for low los $3.55 (LTC1473LCGN#PBF)
56LTC1479 3 6 28 5 External, N-Channel, Triple 175µ Triple PowerPath Controller for Dual Battery Systems and AC/DC $7.05 (LTC1479CG#PBF)
57LTC1473 2 4.75 30 5 Dual, External, N-Channel 100µ Dual, High Gate Drive $3.55 (LTC1473CGN#PBF)