MAX6495ATT/V+T Maxim Integrated Products, MAX6495ATT/V+T Datasheet
MAX6495ATT/V+T
Specifications of MAX6495ATT/V+T
Related parts for MAX6495ATT/V+T
MAX6495ATT/V+T Summary of contents
Page 1
... Adjustable Undervoltage Threshold (MAX6499) ♦ -40°C to +125°C Operating Temperature Range ♦ Small, 3mm x 3mm TDFN Package PART MAX6495ATT+T MAX6495ATT/V+T Ordering Information continued at end of data sheet. Note: All devices are specified over the -40°C to +125°C operating temperature range. + Denotes a lead(Pb)-free/RoHS-compliant package. ...
Page 2
Overvoltage-Protection Switches/ Limiter Controllers with an External MOSFET ABSOLUTE MAXIMUM RATINGS (All pins referenced to GND.) IN, GATE, GATEP ...................................................-0.3V to +80V SHDN, CLEAR .............................................-0. POK, OUTFB ..........................................................-0.3V to +80V GATE to OUTFB .....................................................-0.3V to +12V GATEP ...
Page 3
Overvoltage-Protection Switches/ Limiter Controllers with an External MOSFET ELECTRICAL CHARACTERISTICS (continued 14V 6nF -40°C to +125°C, unless otherwise noted. Typical values are GATE A PARAMETER SYMBOL OVSET to GATE Propagation ...
Page 4
Overvoltage-Protection Switches/ Limiter Controllers with an External MOSFET (V = +12V +25°C, unless otherwise noted SUPPLY CURRENT vs. SUPPLY VOLTAGE SET = GND, GATE ENHANCED 135 110 ...
Page 5
Overvoltage-Protection Switches/ Limiter Controllers with an External MOSFET (V = +12V +25°C, unless otherwise noted STARTUP WAVEFORM (C = 100µ 10µ OUT 400µs/div OVERVOLTAGE SWITCH FAULT (C = 100µ ...
Page 6
Overvoltage-Protection Switches/ Limiter Controllers with an External MOSFET PIN NAME SHDN OVSET GND GATE ...
Page 7
Overvoltage-Protection Switches/ Limiter Controllers with an External MOSFET Detailed Description Overvoltage Monitoring When operating in overvoltage mode, the MAX6495– MAX6499 feedback path (Figure 1) consists of IN, OVSET’s internal comparator, the internal gate charge pump, and the external n-channel ...
Page 8
Overvoltage-Protection Switches/ Limiter Controllers with an External MOSFET The gate cycles during overvoltage-limit and overvolt- age-switch modes are quite similar but have distinct characteristics. In overvoltage-switch mode, GATE is enhanced 10V) while the monitored V IN ...
Page 9
Overvoltage-Protection Switches/ Limiter Controllers with an External MOSFET Power-OK Output (MAX6497/MAX6498) POK is an open-drain output that remains low when the voltage at POKSET is below the internal POKSET threshold (1.18V). POK goes high impedance when POKSET goes above ...
Page 10
Overvoltage-Protection Switches/ Limiter Controllers with an External MOSFET where I is GATE’s 100µA sourcing current, I GATE is the load current at startup, and C capacitor. MOSFET Selection Select external MOSFETs according to the application current level. The MOSFET’s ...
Page 11
Overvoltage-Protection Switches/ Limiter Controllers with an External MOSFET • The overvoltage waveform period (t • The power dissipated across the package (P During an initial overvoltage occurrence, the discharge time (∆ caused ...
Page 12
Overvoltage-Protection Switches/ Limiter Controllers with an External MOSFET GATE 12V IN IN OUTFB MAX6495 SHDN OVSET GND Figure 6. Overvoltage Limiter (MAX6495) GATE OUTFB POKSET 12V IN SHDN MAX6497 MAX6498 OVSET POK GND Figure 8. Overvoltage Protection to a ...
Page 13
Overvoltage-Protection Switches/ Limiter Controllers with an External MOSFET IN UVLO 5V OVSET 1.24V MAX6495 GND Figure 10. Functional Diagram (MAX6495) IN UVLO 5V OVSET 0.505V 1.24V MAX6497 MAX6498 GND Figure 12. Functional Diagram (MAX6497/MAX6498) ______________________________________________________________________________________ THERMAL PROTECTION 10V CHARGE ...
Page 14
Overvoltage-Protection Switches/ Limiter Controllers with an External MOSFET p-CHANNEL PART FUNCTION MAX6495 OV Switch/Limiter MAX6496 OV Switch/Limiter MAX6497 OV Switch MAX6498 OV Switch MAX6499 OV/UV Switch/Limiter TOP VIEW N.C. OUTFB 8 7 MAX6496 SHDN 3mm x ...
Page 15
Overvoltage-Protection Switches/ Limiter Controllers with an External MOSFET Ordering Information (continued) PART PIN-PACKAGE MAX6496ATA+T 8 TDFN-EP* MAX6497ATA+T 8 TDFN-EP* MAX6498ATA+T 8 TDFN-EP* MAX6499ATA+T 8 TDFN-EP* Note: All devices are specified over the -40°C to +125°C operating temperature range. + ...
Page 16
... Added automotive qualified part for MAX6495. Updated Electrical Characteristics, added Peak Power Dissipation Limit section 5 3/09 and new Figure 4. Renumbered subsequent figures throughout data sheet. Corrected the MAX6495ATT/V+T top mark in the Ordering Information table from 6 7/09 AJM to AUG. Updated Undervoltage Monitoring (MAX6499) and Setting Overvoltage ...