MAX1614_11 Datasheet, PDF (1/9 Pages) Maxim Integrated Products – High-Side, n-Channel MOSFET Switch Driver Internal On/Off Latch

19-1176; Rev 1; 6/11
High-Side, n-Channel MOSFET
Switch Driver
_______________General Description
The MAX1614 drives high-side, n-channel power MOSFETs
to provide battery power-switching functions in portable
equipment. The n-channel power MOSFETs typically have
one-third the on-resistance of p-channel MOSFETs of simi-
lar size and cost. An internal micropower regulator and
charge pump generate the high-side drive output voltage,
while requiring no external components.
The MAX1614 also features a 1.5%-accurate low-battery
comparator that can be used to indicate a low-battery
condition, provide an early power-fail warning to the sys-
tem microprocessor, or disconnect the battery from the
load, preventing deep discharge and battery damage. An
internal latch allows for pushbutton on/off control with very
low current consumption. Off-mode current consumption
is only 6µA while normal operation requires less than
25µA. The MAX1614 is available in the space-saving
µMAX^® package that occupies about 60% less space
than a standard 8-pin SO.
________________________Applications
Notebook Computers
Portable Equipment
Hand-Held Instruments
Battery Packs
µMAX is a registered trademark of Maxim Integrated Products, Inc.
__________Typical Operating Circuit
____________________________Features
o Internal On/Off Latch
o High-Side, n-Channel Power MOSFET Drive
o 25µA (max) Quiescent Current
o 6µA (max) Off Current
o Requires No External Components
o 1.5%-Accurate Low-Battery Detector
o Space-Saving µMAX Package
o 5V to 26V Input Voltage Range
o Drives Single or Back-to-Back MOSFETs
o Controlled Turn-On for Low Inrush Current
______________Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX1614C/D
0°C to +70°C Dice*
MAX1614EUA+
-40°C to +85°C 8 µMAX
MAX1614EUA/V+
-40°C to +85°C 8 µMAX
*Contact factory for dice specifications.
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
Devices are also available in a tape-and-reel package.
Specify tape-and-reel by adding “T” to the part number when
ordering.
__________________Pin Configuration
N
N
LOAD
GATE SRC
ON
OPTIONAL FOR
REVERSE CURRENT
PROTECTION
BATT ^MAX1614 _OFF
R1
LBI
LBO
R2
GND
TOP VIEW
ON 1
OFF ²
LBO 3
LBI 4
+
MAX1614
µMAX
8 BATT
7 SRC
6 GATE
5 GND
________________________________________________________________ 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.