NCP370GEVB ON Semiconductor, NCP370GEVB Datasheet - Page 8

• Manufacturer Part Number: NCP370GEVB
• Description: EVAL BOARD FOR NCP370G
• Manufacturer: ON Semiconductor

Specifications of NCP370GEVB

• Design Resources: NCP370GEVB BOM NCP370GEVB Gerber Files NCP370GEVB Schematic
• Main Purpose: Overvoltage Protection
• Embedded: No
• Utilized Ic / Part: NCP370
• Primary Attributes: Overvoltage Protected up to 28V and down to -28V
• Secondary Attributes: Reverse Mode
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: NCP370G
• Other names: NCP370GEVBOS

Negative Voltage and Reverse Current.
voltage occurring on the IN pin, down to −28 V. When a
negative voltage occurs, the output is disconnected from the
IN pins.
Reverse Mode
bottom connector can be powered by the internal battery of
the system.
(> 1.2) and REV must be tied high to low (< 0.55 V).
battery, with a 2.5 V minimum voltage and 5.5 V maximum
voltage.
available.
Overcurrent Protection (OCP)
function, from battery to external accessory.
limited when the value, set by the external R
exceeds I
allowing a maximum OCP value when I
connected to GND.
The device protects the downstream side from negative
In Reverse Mode, an external accessory plugged into the
To access to the reverse mode, DIR pin must be tied high
In this case, the core of the NCP370 will be supplied by the
In this reverse state, both OCP and thermal modes are
This device integrates the reverse over current protection
That means the current across the internal NMOS is
An internal resistor is placed in series with the I
OCP
.
lim
pin is directly
limit
resistor,
http://onsemi.com
lim
pin
8
the OCP value is lowered. The typical overcurrent threshold
can be calculated with the following formula;
R
and FLAG output goes low, allowing the micro−controller
to process the fault event and then disable reverse charge
path.
ilim
Figure 5. Reverse Mode Overcurrent Protection vs.
By adding external resistors in series from I
During an overcurrent event, the N−MOSFETs turn off
(kW) = (60 / I
ILIM Resistance, R
OCP
) − 36
LIMIT
lim
to GND,