MAX16947 Maxim, MAX16947 Datasheet - Page 2

• 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
ABSOLUTE MAXIMUM RATINGS
SC, OL, REG to GND ...........................................-0.3V to +6.0V
OLT, LIM, FB, AOUT, REF,
IN, SENS, SHDN to GND ......................................-0.3V to +28V
IN, SENS, SHDN to GND (< 1s) ............................-0.3V to +45V
OUT to GND ..........................................................-0.3V to +20V
IN to SENS ............................................................-0.3V to +0.3V
Continuous Power Dissipation (T
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
ELECTRICAL CHARACTERISTICS
(V
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.
2
POWER SWITCH/LDO
IN Operating Supply Range
IN Supply Current
IN Shutdown Supply Current
Undervoltage Lockout
(Rising)
Internal Switch Voltage Drop
Internal Voltage Regulator
Feedback Voltage
TQFN-EP (derate 25mW/NC above +70NC) .....................2000mW
COMP to GND .....................................-0.3V to (V
QSOP (derate 9.5mW/NC above +70NC) .....................761mW
QSOP-EP (derate 22.7mW/NC above +70NC) ............1818mW
IN
______________________________________________________________________________________
= 12V, V
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
PARAMETER
GND
= 0V, T
A
= -40NC to +105NC, unless otherwise noted. Typical values are at T
A
= +70NC)
SYMBOL
V
V
V
UVLO
V
I
V
I
REG
CC
SD
SW
FB
IN
Full performance
Output switched off (Note 2)
Output switched off for < 1s (Note 2)
V
V
Falling V
Rising V
Hysteresis
Measured between SENS and OUT while
sourcing 100mA, FB grounded, SW oper-
ation, T
Measured between SENS and OUT while
sourcing 100mA, FB grounded, SW
operation, T
(Note 2)
I
MAX16946 only,
LDO mode with
FB connected to
external resistive
divider
REG
REG
SHDN
SHDN
= 0mA, T
+ 0.3V)
A
> 2.4V, T
= V
IN
IN
= +25NC, 4.5V < V
GND
A
= +105NC, 4.5V < V
CONDITIONS
A
, T
A
= +25NC
A
= +25NC
Junction-to-Ambient Thermal Resistance (B
Junction-to-Case Thermal Resistance (B
Operating Temperature Range ........................ -40NC to +105NC
Junction Temperature ...................................... -40NC to +150NC
Storage Temperature Range ............................ -65NC to +150NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
I
150mA, 4.5V P V
18V
I
200mA, 4.5V < V
P 18V
= +25NC, V
OUT
OUT
QSOP .........................................................................105NC/W
QSOP-EP ......................................................................44NC/W
TQFN-EP ......................................................................40NC/W
QSOP ..........................................................................37NC/W
QSOP-EP ........................................................................6NC/W
TQFN-EP ........................................................................6NC/W
= 5mA to
= 2mA to
IN
< 18V
IN
IN
= 12V
< 18V
IN
IN
P
A
0.97
0.95
MIN
4.5
= T
J
= +25NC.)
TYP
2.1
3.5
3.9
0.4
0.2
5
1
1
JC
) (Note 1)
JA
) (Note 1)
MAX
0.20
0.25
1.03
1.05
2.6
18
28
45
7
UNITS
mA
FA
V
V
V
V
V
V
V
V
V