MAX16947 Maxim, MAX16947 Datasheet - Page 10

• Manufacturer Part Number: MAX16947
• Description: The MAX16946/MAX16947 high-voltage, high-side, current-sense LDO/switches feature internal current limiting to prevent system damage due to fault conditions
• Manufacturer: Maxim

Remote Antenna, Current-Sense and
LDO/Switches
10
MAX16946
4, 9, 15
_____________________________________________________________________________________
10
11
1
2
3
5
6
7
8
TOP VIEW
GND
REG
OUT
FB
PIN
13
14
15
16
MAX16947
4, 9, 14, 15
+
12
1
10
11
1
2
3
5
6
7
8
MAX16946
11
TQFN
2
10
3
NAME
COMP
SHDN
AOUT
SENS
GND
OLT
LIM
SC
OL
IN
EP
9
4
8
7
6
5
Input Voltage. Bypass IN to GND with a low-ESR ceramic capacitor with a minimum
value of 0.1FF.
Current-Sense Amplifier Input. Connect the sense resistor between SENS and IN.
Active-Low Shutdown Input. Drive SHDN low for more than 360Fs to turn off the device.
Pulsing SHDN low for less than t
compatible and is connected to IN for normal operation.
Ground
LDO Compensation. Connect a 0.1FF ceramic capacitor between COMP and GND to
compensate the LDO.
Open-Drain Short-Circuit Indicator Output. SC goes low when the load current is greater
than the set short-circuit current threshold or when there is a short-to-battery fault.
Connect SC to a 10kI pullup resistor. See Table 1.
Open-Drain Open-Load Indicator Output. OL goes low when the load current is lower
than the set open-load current threshold or when there is a short-to-battery fault. Connect
OL to a 10kI pullup resistor. See Table 1.
Current Monitor Voltage Output. AOUT can be used to measure the load current by
means of an external ADC. AOUT has a current drive capability of 1mA. Bypass AOUT to
GND with a 15nF ceramic capacitor. See Table 1.
Open-Load Current Threshold Setting Input. A resistive divider between REF, OLT, and
GND sets the open-load current threshold.
Current-Limit Setting input. Connect a resistive divider from REF, LIM, and GND to set
the current limit of the switch or LDO. Alternatively, externally drive LIM (not to exceed
3.65V) to set the current limit.
AOUT
OL
SC
COMP
TOP VIEW
COMP
SHDN
AOUT 8
SENS
GND
SC 6
OL
IN
1
2
3
4
5
7
+
MAX16946
QSOP
EP
SHDN_OFF
16
15
14
13
12 REF
11
10
9
FUNCTION
OUT
GND
FB
REG
LIM
OLT
GND
clears the OL output. SHDN is high-voltage
TOP VIEW
COMP
SHDN
AOUT
SENS
GND
SC
OL
IN
1
2
6
3
4
5
7
8
Pin Configurations
+
Pin Description
MAX16947
QSOP
16
15
14
13
12
11
10
9
OUT
GND
GND
REG
REF
LIM
OLT
GND