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Maxim > Solutions > Instrumentation Cluster
Overvoltage Protection
Challenges: Protects secondary and POL power supplies from typical car voltage fluctuations, load dump and reverse battery conditions.
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| Display |
Title/Parts |
Key Advantages |
| QV PDF |
72V, Overvoltage-Protection Switches/Limiter Controllers with an External MOSFET
MAX6495, MAX6496, MAX6497, MAX6498, MAX6499
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| QV PDF |
Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V
MAX6397, MAX6398
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| Key Specifications: Linear Regulators |
| Part Number |
Regulators |
VIN
(V) |
VIN
(V) |
Preset VOUT
(V) |
VDROPOUT @Rated ILOAD
(V) |
Rated ILOAD
(mA) |
ICC
(µA) |
Low Batt./ Pwr. Fail Out |
POK/Reset Thresh.
(V) |
Watchdog |
Reverse Batt. Protect. |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Oper. Temp.
(°C) |
| min |
max |
typ |
max |
nom |
max w/pins |
| MAX6397 |
1 |
5.5 |
72 |
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0.7 |
100 |
48 |
No |
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No |
No |
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10 |
-40 to +125 |
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See All Linear Regulators (153)
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| Key Specifications: Overvoltage Protection Controllers |
| Part Number |
Channels |
VIN
(V) |
VIN
(V) |
Over Voltage Trip Level
(V) |
Under Voltage Lockout
(V) |
VGATE
(V) |
Features |
Design Tools |
Package/Pins |
Oper. Temp.
(°C) |
| min |
max |
| MAX6495 |
1 |
5.5 |
72 |
Adjustable (1.2V) |
5 |
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| Internal Charge Pump | | Voltage Limiter Mode |
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- |
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-40 to +125 |
| MAX6496 |
| Internal Charge Pump | | Latch | | Reverse Polarity Protection | | Voltage Limiter Mode |
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EE-Sim |
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| MAX6497 |
| Internal Charge Pump | | Latch |
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- |
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| MAX6498 |
| Auto Retry | | Internal Charge Pump |
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- |
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| MAX6499 |
| Internal Charge Pump | | Latch |
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- |
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| MAX6398 |
| Internal Charge Pump | | Voltage Limiter Mode |
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- |
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See All Overvoltage Protection Controllers (47)
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| Key Specifications: Supervisors (1 Monitored Voltage) |
| Part Number |
Reset Thresh.
(V) |
Reset Out |
tRESET |
Watchdog Feature |
Supervisor Features |
Reset Thresh. Accur.
(%) |
ICC
(µA) |
| Active Low |
min |
@ +25°C |
max |
| MAX6495 |
| 1.2 to 1.8 | | 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 |
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- |
<1ms |
No Watchdog |
| Adjustable Reset Input | | High Voltage (>6V) | | Overvoltage/Window Monitor |
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2.5 |
30 |
| MAX6496 |
- |
| Adjustable Reset Input | | High Voltage (>6V) | | Overvoltage/Window Monitor |
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30 |
| MAX6497 |
Open Drain |
| Adjustable Reset Input | | High Voltage (>6V) | | Latched Output | | Overvoltage/Window Monitor |
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24 |
| MAX6498 |
Open Drain |
| Adjustable Reset Input | | High Voltage (>6V) | | Overvoltage/Window Monitor |
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24 |
| MAX6499 |
- |
| Adjustable Reset Input | | High Voltage (>6V) | | Latched Output | | Overvoltage/Window Monitor |
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24 |
| MAX6398 |
- |
| High Voltage (>6V) | | Overvoltage/Window Monitor |
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45 |
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See All Supervisors (1 Monitored Voltage) (274)
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