Rainbow Electronics MAX16913A User Manual
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 phantom power to remote radio-frequency low-noise amplifiers (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 thermaloverload 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
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
MAX16913/MAX16913A
Remote Antenna Current-Sense
Amplifier and Switches
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
19-4186; Rev 0; 7/08
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.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
*
/V denotes an automotive qualified part.
EVALUATION KIT
AVAILABLE
Pin Configuration appears at end of data sheet.
Typical Operating Circuits
MAX16913
SC
OL
GND
OLT
IN
SHDN
SENS
BATTERY
INPUT
AOUT
TO ADC INPUT
OUT
TO
PROTECTED
LOAD (LNA)
3.3V TO 5V
MAX16913A
REF
REF
SC
OL
GND
OLT
IN
SHDN
SENS
BATTERY
INPUT
AOUT
TO ADC INPUT
OUT
TO
PROTECTED
LOAD (LNA)
3.3V TO 5V
PA R T
M A X1 6 9 1 3 G E E +
M AX 16913GE E /V + *
M A X1 6 9 1 3 A G E E +
M AX 16913AG E E /V + *
T EM P
R A N G E
- 40°C to
+ 105° C
- 40°C to
+ 105° C
- 40°C to
+ 105° C
- 40°C to
+ 105° C
PIN -
PA C K A G E
16 QS OP Inter nal l y S et
16 QS OP Inter nal l y S et
16 QS OP
16 QS OP
O PEN - L O A D
T H R ESH O L D
E xter nal l y
Ad j ustab l e
E xter nal l y
Ad j ustab l e
MAX16913/MAX16913A
Remote Antenna Current-Sense
Amplifier and Switches
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VIN= +9V to +18V, TA= TJ= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
IN to GND ............................................….…………-0.3V to +42V
OUT to GND ...........................................................-0.3V to +42V
SENS to IN.............................................................-0.3V to +0.3V
SC, OL, SHDN, OLT, AOUT to GND..................…-0.3V to +6.0V
Current into Any Pin Except OUT and SENS....................±20mA
Current into SENS and OUT ...........................................±340mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin QSOP (derate 18.2mW/°C above +70°C)....1454.5mW
Junction-to-Case Thermal Resistance (θ
JC
) (Note 1) ......25°C/W
Junction-to-Ambient Thermal Resistance (θ
JA
) (Note 1) .....55°C/W
Operating Temperature Range .........................-40°C to +105°C
Junction Temperature........................................-40°C to +150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial
.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
GENERAL
Operating Input Voltage Range V
Quiescent Supply Current I
Shutdown Supply Current I
(VIN - V
SENS
) to V
Gain Av V
AOUT
AOUT Maximum Voltage (VIN - V
AOUT Zero-Current Output Voltage (VIN - V
AOUT Voltage
AOUT Output Impedance Z
Switch Dropout Voltage V
Thermal Shutdown Threshold T
Thermal Shutdown Hysteresis T
Reference Output Voltage V
Reference Output Impedance Z
THRESHOLDS
Open-Load Current Threshold I
Nominal Open-Load Threshold
Setting Range
Short-Circuit Voltage Threshold V
Voltage between IN and SENS V
Overvoltage Shutdown Threshold V
Overcurrent Blanking Time t
Retry Time t
IN
V
CC
SD
AOUT
D
SHDN
HYST
REF
REF
OL
V
OLR
SC
LIM
OVLOVIN
BLANK
RETRY
< 0.4V 0.6 1.2 mA
SHDN
V
> 1.7V, TA = +25°C 5 µA
SHDN
/(VIN - V
AOUT
SENS
SENS
I
= ISC, (VIN - V
LOAD
I
= 2 x ISC, (VIN - V
LOAD
) 13 V/V
SENS
) > 300mV 4.3 V
) = 0 340 400 460 mV
) = 100mV 1.5 1.7 1.9
SENS
) = 200mV 2.7 3 3.3
SENS
Measured between SENS and OUT while
sourcing 100mA
Temperature rising +150 +164 °C
R
SENSE
= 1Ω (V
= 0.66V for the
OLT
MAX16913 only)
(MAX16913A only) 10 50 mV
R
= 1Ω 87 100 110 mV
SENSE
At current limit, VIN = 14V 173 200 225 mV
rising 18 21 24 V
518V
2.7 3 3.3 V
10 20 30 mA
100 200 ms
1500 3000 ms
5kΩ
0.6 V
15 °C
5kΩ
V
MAX16913/MAX16913A
Remote Antenna Current-Sense
Amplifier and Switches
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(VIN= +9V to +18V, TA= TJ= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
Typical Operating Characteristics
(VIN= 14V, R
SENSE
= 1Ω, TA= +25°C, unless otherwise noted.)
400
500
450
600
550
650
700
OPERATING SUPPLY CURRENT
vs. TEMPERATURE
TEMPERATURE (°C)
I
CC
(μA)
-40 10 35-15 60 85 105
MAX16913/3A toc01
200
400
300
600
500
700
800
410126 8 14 16 18
OPERATING SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX16913/3A toc02
VIN (V)
I
CC
(μA)
0
1
3
2
4
5
-40 10-15 356085105
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX16913/3A toc03
TEMPERATURE (°C)
I
SD
(μA)
VIN = 14V
14.0
13.5
13.0
12.5
12.0
-40 35-15 10 60 85 105
AOUT GAIN
vs. TEMPERATURE
MAX16913/3A toc04
TEMPERATURE (°C)
A
V
(V/V)
0.8
0.6
0.4
0.2
0
-40 35-15 10 60 85 105
(V
SENSE
- V
OUT
)
vs. TEMPERATURE
MAX16913/3A toc04
TEMPERATURE (°C)
V
SENSE
- V
OUT
(V)
I
OUT
= 90mA
0
0.2
0.4
0.6
0.8
(V
SENSE
- V
OUT
)
vs. V
IN
MAX16913/3A toc06
VIN (V)
V
SENSE
- V
OUT
(V)
410126 8 14 16 18
I
OUT
= 90mA
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
LOGIC LEVELS
SC, OL Output-Voltage Low V
SC, OL Output-Leakage Current I
SHDN Input Low Voltage V
SHDN Input High Voltage V
TIMING
Startup Response Time t
Sink current = 1mA 0.4 V
OL
V
LEAK
IL
IH
ST
= VOL = 5V 0.01 µA
SC
SHDN falling edge to 90% of VIN, no load 100 µs
0.4 V
1.7 V
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