Datasheet LTC4360-1, LTC4360-2 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | Overvoltage Protection Controller |
| Páginas / Página | 14 / 1 — FEATURES. DESCRIPTION. 2.5V to 5.5V Operation. Overvoltage Protection Up … |
| Revisión | B |
| Formato / tamaño de archivo | PDF / 547 Kb |
| Idioma del documento | Inglés |
FEATURES. DESCRIPTION. 2.5V to 5.5V Operation. Overvoltage Protection Up to 80V. No Input Capacitor or TVS Required for Most
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LTC4360-1/LTC4360-2 Overvoltage Protection Controller
FEATURES DESCRIPTION
n
2.5V to 5.5V Operation
The LTC®4360 overvoltage protection controller safe- n
Overvoltage Protection Up to 80V
guards 2.5V to 5.5V systems from power supply over- n
No Input Capacitor or TVS Required for Most
voltage. It is designed for portable devices with multiple
Applications
power supply options including wall adaptors, car battery n
2% Accurate 5.8V Overvoltage Threshold
adaptors and USB ports. n
<1µs Overvoltage Turn-Off, Gentle Shutdown
The LTC4360 controls an external N-channel MOSFET in n Controls N-Channel MOSFET series with the input power supply. During overvoltage n Adjustable Power-Up dV/dt Limits Inrush transients, the LTC4360 turns off the MOSFET within 1µs, n Reverse Voltage Protection (LTC4360-2) isolating downstream components from the input supply. n Power Good Output Inductive cable transients are absorbed by the MOSFET n Low Current Shutdown (LTC4360-1) and load capacitance. In most applications, the LTC4360 n Available in a Tiny 8-Lead SC70 Package provides protection from transients up to 80V without requiring transient voltage suppressors or other external
APPLICATIONS
components. n USB Protection The LTC4360 has a delayed start-up and an adjustable n Handheld Computers dV/dt ramp-up for inrush current limiting. A PWRGD pin n Cell/Smart Phones provides power good monitoring for VIN. Following an n MP3/MP4 Players overvoltage condition, the LTC4360 automatically restarts n Digital Cameras with a start-up delay. The LTC4360-1 features a soft shut- down controlled by the ON pin, while the LTC4360-2 con- All registered trademarks and trademarks are the property of their respective owners. trols an optional external P-channel MOSFET for negative voltage protection.
TYPICAL APPLICATION Protection from Overvoltage Output Protected from Overvoltage at Input
Si1470DH VOUT V V IN IN 5V 5V 1.5A COUT GATE IN OUT VOUT VIN, VOUT LTC4360-1 5V/DIV ON PWRGD VGATE 10V/DIV GND 436012 TA01a 0.5µs/DIV 436012 TA01b Si1470DH COUT = 10µF Rev B Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts
FEATURES DESCRIPTION
n
2.5V to 5.5V Operation
The LTC®4360 overvoltage protection controller safe- n
Overvoltage Protection Up to 80V
guards 2.5V to 5.5V systems from power supply over- n
No Input Capacitor or TVS Required for Most
voltage. It is designed for portable devices with multiple
Applications
power supply options including wall adaptors, car battery n
2% Accurate 5.8V Overvoltage Threshold
adaptors and USB ports. n
<1µs Overvoltage Turn-Off, Gentle Shutdown
The LTC4360 controls an external N-channel MOSFET in n Controls N-Channel MOSFET series with the input power supply. During overvoltage n Adjustable Power-Up dV/dt Limits Inrush transients, the LTC4360 turns off the MOSFET within 1µs, n Reverse Voltage Protection (LTC4360-2) isolating downstream components from the input supply. n Power Good Output Inductive cable transients are absorbed by the MOSFET n Low Current Shutdown (LTC4360-1) and load capacitance. In most applications, the LTC4360 n Available in a Tiny 8-Lead SC70 Package provides protection from transients up to 80V without requiring transient voltage suppressors or other external
APPLICATIONS
components. n USB Protection The LTC4360 has a delayed start-up and an adjustable n Handheld Computers dV/dt ramp-up for inrush current limiting. A PWRGD pin n Cell/Smart Phones provides power good monitoring for VIN. Following an n MP3/MP4 Players overvoltage condition, the LTC4360 automatically restarts n Digital Cameras with a start-up delay. The LTC4360-1 features a soft shut- down controlled by the ON pin, while the LTC4360-2 con- All registered trademarks and trademarks are the property of their respective owners. trols an optional external P-channel MOSFET for negative voltage protection.
TYPICAL APPLICATION Protection from Overvoltage Output Protected from Overvoltage at Input
Si1470DH VOUT V V IN IN 5V 5V 1.5A COUT GATE IN OUT VOUT VIN, VOUT LTC4360-1 5V/DIV ON PWRGD VGATE 10V/DIV GND 436012 TA01a 0.5µs/DIV 436012 TA01b Si1470DH COUT = 10µF Rev B Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts