MAX16913 Maxim, MAX16913 Datasheet - Page 8

• Manufacturer Part Number: MAX16913
• Description: The MAX16913/MAX16913A high-voltage high-side current-sense switches feature internal current limiting to prevent system damage due to fault conditions
• Manufacturer: Maxim

The MAX16913/MAX16913A include undervoltage cir-
cuitry (UVLO) to prevent erroneous switch operation
when the input voltage goes below approximately
4.25V during startup and brownout conditions. Input
voltages of less than 4.25V inhibit operation of the
Remote Antenna Current-Sense
Amplifier and Switches
Figure 2. Overcurrent Timing Diagram
Table 1. Status Truth Table
8
SC
LOAD CURRENT
LOAD CURRENT
0
0
1
1
_______________________________________________________________________________________
Undervoltage and Overvoltage Lockout
OL
2 x I
2 x I
SHDN
SHDN
0
1
0
1
I
SC
I
SC
SC
SC
SC
SC
0.4V
C ycl i ng Whi l e Autor etr yi ng
0.4V
(V
TURN-ON WITH A HEAVY LOAD
TURN-ON INTO A TEMPORARY HEAVY LOAD
IN
t
t
- V
BLANK
BLANK
SENS
V
AOUT
) x 13 + 0.4V
OUT Short-to-Battery
Short-Circuit Condition
Open-Load Condition
Normal Operation
DEVICE STATUS
t
t
RETRY
RETRY
device by turning off the internal charge pump and the
switch. These devices also feature an overvoltage lock-
out (OVLO) threshold of +21V (typ). When V
greater than V
the switch and the internal charge pump.
The MAX16913/MAX16913A feature a +3V bandgap
reference output, stable over supply voltage and tem-
perature. For the MAX16913A, the reference output is
connected to the resistive divider which sets the open-
load threshold. The output impedance of the internal
reference is 5kΩ (typ).
OVLO
, the device immediately turns off
RETRY
RETRY
Internal Reference
IN
is