MAX4865 MAXIM [Maxim Integrated Products], MAX4865 Datasheet - Page 5

• Manufacturer Part Number: MAX4865
• Description: Overvoltage Protection Controllers with Reverse Polarity Protection
• Manufacturer: MAXIM [Maxim Integrated Products]

(T
MAX4864LEUT/
MAX4865LEUT/
MAX4866LEUT/
MAX4867EUT
A
= +25°C, unless otherwise noted.)
1
2
3
4
5
6
PIN
MAX4864LELT/
MAX4865LELT/
MAX4866LELT/
MAX4867ELT
_______________________________________________________________________________________
POWER-UP OVERVOLTAGE RESPONSE
3
1
2
6
5
4
20ms/div
Overvoltage Protection Controllers
GATEN
GATEP
NAME
FLAG
GND
EN
IN
with Reverse Polarity Protection
MAX4864 toc09
Voltage Input. IN is both the power-supply input and the overvoltage sense input.
Ground
Faul t- Ind i cati on Outp ut. When E N g oes hi g h, FLAG b ecom es hi g h- i m p ed ance. FLAG
i s asser ted hi g h d ur i ng und er vol tag e l ockout and over vol tag e l ockout cond i ti ons.
FLAG i s d easser ted d ur i ng nor m al op er ati on. FLAG i s an op en- d r ai n outp ut.
n-Channel MOSFET Gate-Drive Output. GATEN is the output of an on-chip charge
pump. When V
n-channel MOSFET.
p-Channel MOSFET Gate-Drive Output. GATEP is always on when input is above
ground and off when input drops below ground.
Active-Low Enable Input. Connect to ground in normal operation. Drive EN high to
disable device and enter shutdown mode.
Typical Operating Characteristics (continued)
0V
0V
5V
0V
8V
0V
8V
ADAPTER
IN
GATEN
FLAG
UVLO
< V
IN
NEGATIVE VOLTAGE RESPONSE
< V
OVLO
20ms/div
, GATEN is driven high to turn on the external
FUNCTION
MAX4864 toc10
5V
0V
0V
0V
5V
0V
Pin Description
ADAPTER
GATEP
IN
FLAG
5