Datasheet LTC4380 (Analog Devices) - 9
| Fabricante | Analog Devices |
| Descripción | Low Quiescent Current Surge Stopper |
| Páginas / Página | 24 / 9 — PIN FUNCTIONS TMR:. VCC: |
| Revisión | C |
| Formato / tamaño de archivo | PDF / 1.2 Mb |
| Idioma del documento | Inglés |
PIN FUNCTIONS TMR:. VCC:
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- LTC4380CDD-1#PBF LTC4380CDD-1#TRPBF LTC4380CDD-2#PBF LTC4380CDD-2#TRPBF LTC4380CDD-3#PBF LTC4380CDD-3#TRPBF LTC4380CDD-4#PBF LTC4380CDD-4#TRPBF LTC4380CMS-1#PBF LTC4380CMS-1#TRPBF LTC4380CMS-2#PBF LTC4380CMS-2#TRPBF LTC4380CMS-3#PBF LTC4380CMS-3#TRPBF LTC4380CMS-4#PBF LTC4380CMS-4#TRPBF LTC4380HDD-1#PBF LTC4380HDD-1#TRPBF LTC4380HDD-2#PBF LTC4380HDD-2#TRPBF LTC4380HDD-3#PBF LTC4380HDD-3#TRPBF LTC4380HDD-4#PBF LTC4380HDD-4#TRPBF LTC4380HMS-1#PBF LTC4380HMS-1#TRPBF LTC4380HMS-1#WPBF LTC4380HMS-1#WTRPBF LTC4380HMS-2#PBF LTC4380HMS-2#TRPBF LTC4380HMS-2#WPBF LTC4380HMS-2#WTRPBF LTC4380HMS-3#PBF LTC4380HMS-3#TRPBF LTC4380HMS-3#WPBF LTC4380HMS-3#WTRPBF LTC4380HMS-4#PBF LTC4380HMS-4#TRPBF LTC4380HMS-4#WPBF LTC4380HMS-4#WTRPBF LTC4380IDD-1#PBF LTC4380IDD-1#TRPBF LTC4380IDD-2#PBF LTC4380IDD-2#TRPBF LTC4380IDD-3#PBF LTC4380IDD-3#TRPBF LTC4380IDD-4#PBF LTC4380IDD-4#TRPBF LTC4380IMS-1#PBF LTC4380IMS-1#TRPBF LTC4380IMS-1#WPBF LTC4380IMS-1#WTRPBF LTC4380IMS-2#PBF LTC4380IMS-2#TRPBF LTC4380IMS-2#WPBF LTC4380IMS-2#WTRPBF LTC4380IMS-3#PBF LTC4380IMS-3#TRPBF LTC4380IMS-3#WPBF LTC4380IMS-3#WTRPBF LTC4380IMS-4#PBF LTC4380IMS-4#TRPBF LTC4380IMS-4#WPBF LTC4380IMS-4#WTRPBF
Versión de texto del documento
LTC4380
PIN FUNCTIONS TMR:
Fault Timer Input. Connect a capacitor between
VCC:
Positive Supply Voltage Input. The positive supply this pin and ground to set the fault turn-off time and cool input ranges from 4V to 80V for normal operation. It can down period. The charging current during fault condi- go below ground by up to 60V during a reverse battery tions varies depending on the power dissipation of the condition, without damaging the part. For applications MOSFET. When TMR reaches 1.215V, the MOSFET turns where the input voltage is expected to exceed 80V, the off and FLT pulls low. Upon gate off, the part immediately VCC pin may be protected by a Zener diode clamp or, in enters a cool down period with a 2µA current pull up and the case of short duration spikes, by a simple RC filter. pull down on the TMR pin. After the cool down period has Clamping the VCC pin with a Zener diode can also be used concluded, the LTC4380-2 and LTC4380-4 immediately as a means of adjusting the GATE pin clamp voltage to restart, while the LTC4380-1and LTC4380-3 remain off a value less than the internal 31.5V or 50V clamps for until the ON pin is pulled low momentarily for more than the LTC4380-1/LTC4380-2. For the adjustable versions, 100µs or power is cycled. A 10V rated X7R capacitor is LTC4380-3/LTC4380-4, which have no internal gate clamp, recommended for CTMR. a Zener diode at the VCC pin is the only way to limit the voltage at the GATE pin. Rev. C For more information www.analog.com 9 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
PIN FUNCTIONS TMR:
Fault Timer Input. Connect a capacitor between
VCC:
Positive Supply Voltage Input. The positive supply this pin and ground to set the fault turn-off time and cool input ranges from 4V to 80V for normal operation. It can down period. The charging current during fault condi- go below ground by up to 60V during a reverse battery tions varies depending on the power dissipation of the condition, without damaging the part. For applications MOSFET. When TMR reaches 1.215V, the MOSFET turns where the input voltage is expected to exceed 80V, the off and FLT pulls low. Upon gate off, the part immediately VCC pin may be protected by a Zener diode clamp or, in enters a cool down period with a 2µA current pull up and the case of short duration spikes, by a simple RC filter. pull down on the TMR pin. After the cool down period has Clamping the VCC pin with a Zener diode can also be used concluded, the LTC4380-2 and LTC4380-4 immediately as a means of adjusting the GATE pin clamp voltage to restart, while the LTC4380-1and LTC4380-3 remain off a value less than the internal 31.5V or 50V clamps for until the ON pin is pulled low momentarily for more than the LTC4380-1/LTC4380-2. For the adjustable versions, 100µs or power is cycled. A 10V rated X7R capacitor is LTC4380-3/LTC4380-4, which have no internal gate clamp, recommended for CTMR. a Zener diode at the VCC pin is the only way to limit the voltage at the GATE pin. Rev. C For more information www.analog.com 9 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