LTC1163/LTC1165
Triple 1.8V to 6V High-Side
MOSFET Drivers
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DESCRIPTIO
EATURE
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Operates from 1.8V to 6V
The LTC1163/LTC1165 triple low voltage MOSFET drivers
make it possible to switch supply or ground referenced
loadsthroughinexpensive,lowRDS(ON) N-channelswitches
from as little as a 1.8V supply. The LTC1165 has inverting
inputs and makes it possible to directly replace P-channel
MOSFET switches while maintaining system drive polar-
ity. The LTC1163 has noninverting inputs.
0.01µA Standby Current
95µA Operating Current per Channel at 3.3V
Fully Enhances N-Channel Switches
No External Charge Pump Components
Built-In Gate Voltage Clamps
Easily Protected Against Supply Transients
Controlled Switching ON and OFF Times
Compatible with 5V, 3V and Sub-3V Logic Families
Available in 8-Pin SOIC
Micropower operation, with 0.01µA standby current and
95µA operating current, coupled with a power supply
range of 1.8V to 6V, make the LTC1163/LTC1165 ideally
suited for 2- to 4-cell battery-powered applications. The
LTC1163/LTC1165 are also well suited for sub-3V, 3.3V
and 5V nominal supply applications.
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PPLICATI
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PCMCIA Card 3.3V/5V Switch
2-Cell High-Side Load Switching
Boost Regulator Shutdown to Zero Standby Current
Replacing P-Channel Switches
Notebook Computer Power Management
Palmtop Computer Power Management
Portable Medical Equipment
The LTC1163/LTC1165 internal charge pumps boost the
gatevoltage8Vabovea3.3Vrail, fullyenhancing inexpen-
sive N-channels for high- or low-side switch applications.
The LTC1163/LTC1165 are available in both an 8-pin DIP
and an 8-pin SOIC.
Mixed 3.3V and 5V Supply Switching
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TYPICAL APPLICATI
2-Cell Triple High-Side Switch
MOSFET Switch Gate Voltage
(1.8V TO 3V)
18
16
14
+
+
2-CELL
BATTERY
PACK
10µF
RFD14N05LSM RFD14N05LSM RFD14N05LSM
12
10
8
V
S
IN1
IN2
IN3
OUT1
OUT2
OUT3
CONTROL
LTC1163
LTC1165
LOGIC
OR µP
GND
6
2-CELL
LOAD
2-CELL
LOAD
2-CELL
LOAD
4
LTC1163 HAS NONINVERTING INPUTS
LTC1165 HAS INVERTING INPUTS
2
0
LTC1163/65 • TA01
0
1
2
5
6
3
4
SUPPLY VOLTAGE (V)
LTC1163/65 • TA02
1