LTC1165_15 Datasheet, PDF (1/8 Pages) Linear Technology – Triple 1.8V to 6V High-Side MOSFET Drivers

LTC1163/LTC1165
Triple 1.8V to 6V High-Side
MOSFET Drivers
FEATURES
s _{Operates from 1.8V to 6V}
s _{0.01µA Standby Current}
s _{95µA Operating Current per Channel at 3.3V}
s _{Fully Enhances N-Channel Switches}
s _{No External Charge Pump Components}
s _{Built-In Gate Voltage Clamps}
s _{Easily Protected Against Supply Transients}
s _{Controlled Switching ON and OFF Times}
s _{Compatible with 5V, 3V and Sub-3V Logic Families}
s _{Available in 8-Pin SOIC}
APPLICATI S
s _{PCMCIA Card 3.3V/5V Switch}
s _{2-Cell High-Side Load Switching}
s _{Boost Regulator Shutdown to Zero Standby Current}
s _{Replacing P-Channel Switches}
s _{Notebook Computer Power Management}
s _{Palmtop Computer Power Management}
s _{Portable Medical Equipment}
s _{Mixed 3.3V and 5V Supply Switching}
DESCRIPTIO
The LTC1163/LTC1165 triple low voltage MOSFET drivers
make it possible to switch supply or ground referenced
loads through inexpensive, low R_DS(ON) N-channel switches
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.
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.
The LTC1163/LTC1165 internal charge pumps boost the
gate voltage 8V above a 3.3V rail, fully enhancing 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.
TYPICAL APPLICATI
2-Cell Triple High-Side Switch
(1.8V TO 3V)
+ 2-CELL
+
BATTERY
PACK
CONTROL
LOGIC
OR µP
10µF
RFD14N05LSM
IN1
V_{S OUT1}
IN2
LTC1163
LTC1165
OUT2
IN3 _GND OUT3
RFD14N05LSM
RFD14N05LSM
LTC1163 HAS NONINVERTING INPUTS
LTC1165 HAS INVERTING INPUTS
2-CELL
LOAD
2-CELL
LOAD
2-CELL
LOAD
LTC1163/65 • TA01
MOSFET Switch Gate Voltage
18
16
14
12
10
8
6
4
2
0
0
1
2
3
45
6
SUPPLY VOLTAGE (V)
LTC1163/65 • TA02
1