19-4186; Rev 0; 7/08
Remote Antenna Current-Sense
Amplifier and Switches
/MX6913A
General Description
Features
♦ Switch Phantom Power-On/-Off Under µC Control
♦ Analog Current Measurement Output
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.
♦ Adjustable Current Limiting (340mA Maximum)
♦ Detect Open-Load and Short-Circuit Conditions
♦ Provide Open-Drain Fault Signals (SC and OL)
♦ Overcurrent Blanking During Startup
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.
♦ Thermal Shutdown
♦ AEC-Q100 Qualified (/V Versions Only)
♦ -40°C to +105°C Operating Temperature Range
Typical Operating Circuits
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.
TO
BATTERY
PROTECTED
INPUT
LOAD (LNA)
IN
SENS OUT
REF
3.3V TO 5V
MAX16913
OLT
The MAX16913/MAX16913A are available in the 16-pin
QSOP package and operate over the -40°C to +105°C
temperature range.
SC
OL
SHDN
TO ADC INPUT
AOUT
Applications
GND
Remote LNA Phantom Power
Automotive Safety and Infotainment
TO
BATTERY
INPUT
PROTECTED
LOAD (LNA)
Ordering Information
IN
SENS OUT
TEMP
PIN-
OPEN-LOAD
REF
PART
RANGE PACKAGE THRESHOLD
3.3V TO 5V
-40°C to
+105°C
MAX16913GEE+
MAX16913GEE/V+*
MAX16913AGEE+
MAX16913AGEE/V+*
16 QSOP
16 QSOP
16 QSOP
16 QSOP
Internally Set
Internally Set
MAX16913A
OLT
-40°C to
+105°C
SC
-40°C to
+105°C
Externally
Adjustable
OL
SHDN
TO ADC INPUT
AOUT
GND
-40°C to
+105°C
Externally
Adjustable
+Denotes a lead(Pb)-free/RoHS-compliant package.
*/V denotes an automotive qualified part.
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.