LT1026_03 Datasheet, PDF (1/8 Pages) Linear Technology – Voltage Converter

LT1026
Voltage Converter
FEATURES
s _{Generates + and – from Single Input}
s _{Up to ±18V Output}
s _{Only Needs Four 1µF Capacitors}
s _{No Inductors}
s _{10mA Output Current Minimum}
s _{Operates Down to 4V}
s _{No Latchup}
s _{8-Pin Minidip}
U
APPLICATIO S
s _{Line Drivers}
s _{Op Amp Suppliers}
s _{Battery Splitters}
s _{RS232 Power}
DESCRIPTIO
The LT^®1026 is a switched capacitor voltage doubler and
inverter on a single monolithic die. Capable of operating
from a 4V to 10V input, it provides ±7V to ±18V output.
Output currents of over 10mA are available. Two charge
pumps first double the input voltage then invert the
doubled voltage. Manufactured in bipolar technology, the
LT1026 is not susceptible to latchup and generates up to
36V.
The LT1026 offers a convenient way of generating addi-
tional system voltages without using inductors. Powering
interface circuits, op amps or data acquisition circuitry off
logic supplies is simplified.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
Voltage Doubler and Inverter
C1
1µF
C2
1µF
–V_OUT
1 _C1–
8
+V_OUT
2 _C2+
C1^{+ 7}
3 _C2–
LT1026
6
V_IN
V_IN
4 _–VOUT
5
GND
1µF
+V_OUT
1µF
1026 • TA01
10
8
6
4
2
0
–2
–4
–6
–8
–10
0
Output Voltage
C = 1µF
V_IN = 5V
T_A = 25°C
5
10
15
20
25
LOAD CURRENT (mA)
LT1026 • TA02
1026fb
1