MAX16913 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – Remote Antenna Current-Sense Amplifier and Switches

19-4186; Rev 0; 7/08
EVAALVUAAILTAIOBNLEKIT
Remote Antenna Current-Sense
Amplifier and Switches
General Description
The MAX16913/MAX16913A high-voltage high-side
current-sense switches feature internal current limiting
to prevent system damage due to fault conditions. The
MAX16913/MAX16913A input voltage range extends
from 5V to 18V, making them ideal for providing phan-
tom power to remote radio-frequency low-noise ampli-
fiers (LNAs) in automotive applications.
The MAX16913/MAX16913A monitor the load current
and provide an analog output voltage proportional to
the sensed load current. In addition to current sensing,
accurate internal current-limiting circuitry protects the
input supply against both overload and short-circuit
conditions. Two open-drain fault indicator outputs notify
the microprocessor when a short circuit, an open-load
condition, or a short-to-battery condition exists. For the
MAX16913A, the open-load threshold is externally
adjustable using a resistive divider.
A fault-blanking feature enables the circuit to ignore
momentary faults, such as those caused by the initial
charging of a capacitive load when hot swapping,
preventing false alarms to the system. Built-in thermal-
overload protection turns off the switch when the die
temperature exceeds +150°C (min). The MAX16913/
MAX16913A also feature a short-to-battery detection
every time the internal switch turns on. These devices
provide an active-high control input to put the devices
in low-power shutdown mode.
The MAX16913/MAX16913A are available in the 16-pin
QSOP package and operate over the -40°C to +105°C
temperature range.
Applications
Remote LNA Phantom Power
Automotive Safety and Infotainment
Ordering Information
PART
MAX16913GEE+
MAX16913GEE/V+*
MAX16913AGEE+
MAX16913AGEE/V+*
T EM P
RANGE
-40°C to
+105°C
-40°C to
+105°C
-40°C to
+105°C
-40°C to
+105°C
PIN- OPEN-LOAD
PACKAGE THRESHOLD
16 QSOP Internally Set
16 QSOP Internally Set
16 QSOP
16 QSOP
Externally
Adjustable
Externally
Adjustable
+Denotes a lead(Pb)-free/RoHS-compliant package.
*/V denotes an automotive qualified part.
Features
♦ Switch Phantom Power-On/-Off Under µC Control
♦ Analog Current Measurement Output
♦ Adjustable Current Limiting (340mA Maximum)
♦ Detect Open-Load and Short-Circuit Conditions
♦ Provide Open-Drain Fault Signals (SC and OL)
♦ Overcurrent Blanking During Startup
♦ Thermal Shutdown
♦ AEC-Q100 Qualified (/V Versions Only)
♦ -40°C to +105°C Operating Temperature Range
Typical Operating Circuits
BATTERY
INPUT
3.3V TO 5V
IN
SENS OUT
REF
MAX16913 _OLT
TO
PROTECTED
LOAD (LNA)
SC
OL
SHDN
GND
AOUT
TO ADC INPUT
BATTERY
INPUT
3.3V TO 5V
IN
SENS OUT
REF
MAX16913A _OLT
TO
PROTECTED
LOAD (LNA)
SC
OL
SHDN
GND
AOUT
TO ADC INPUT
Pin Configuration appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.