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Linear Technology Electronic Components Datasheet

LT1026 Datasheet

Voltage Converter

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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
–VOUT
1 C1
8
+VOUT
2 C2+
C1+ 7
3 C2
LT1026
6
VIN
VIN
4 –VOUT
5
GND
1µF
+ +VOUT
1µF
1026 • TA01
10
8
6
4
2
0
–2
–4
–6
–8
–10
0
Output Voltage
C = 1µF
VIN = 5V
TA = 25°C
5 10 15 20
LOAD CURRENT (mA)
25
LT1026 • TA02
1026fb
1


Linear Technology Electronic Components Datasheet

LT1026 Datasheet

Voltage Converter

No Preview Available !

LT1026
ABSOLUTE MAXIMUM RATINGS (Note 1)
Supply Voltage ........................................................ 10V
V + ............................................................................ 20V
V ..........................................................................– 20V
Short-Circuit Duration ......................................... 10 sec
Operating Temperature Range
LT1026C ................................................. 0°C to 70°C
LT1026I .............................................. – 40°C to 85°C
LT1026M (OBSOLETE) ............... – 55°C to 125°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
+VOUT
8
C11
7
C1+
C2+ 2
6 VIN
C23
5 GND
4
–VOUT
H PACKAGE
8-LEAD TO-5 METAL CAN
TJMAX = 150°C, θJA = 150°C/W
C11
C2+ 2
C23
–VOUT 4
TOP VIEW
8 +VOUT
7 C1+
6 VIN
5 GND
J8 PACKAGE
8-LEAD CERDIP
TJMAX = 150°C, θJA = 150°C/W
ORDER PART
NUMBER
ORDER PART
NUMBER
LT1026CH
LT1026CJ8
LT1026MH
LT1026MJ8
OBSOLETE PACKAGES
Consider the N8 or S8 Packages for Alternate Source
Consult LTC Marketing for parts specified with wider operating temperature ranges.
C11
C2+ 2
C23
–VOUT 4
TOP VIEW
8 +VOUT
7 C1+
6 VIN
5 GND
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 100°C/W (N8)
TJMAX = 150°C, θJA = 150°C/W (S8)
ORDER PART
NUMBER
LT1026CN8
LT1026CS8
LT1026IS8
S8 PART
MARKING
1026
1026I
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C.
PARAMETERS
CONDITIONS
MIN TYP MAX UNITS
Output Voltage
VIN = 4V
(Note 2)
VIN = 5V
VIN = 10V
VIN = 5V
IL = 0mA
IL = 0mA
IL = 10mA
IL = – 10mA
IL = 15mA
IL = – 15mA
IL = 0mA
IL = 0mA
IL = 10mA
IL = – 10mA
IL = 15mA
IL = – 15mA
IL = 10mA, – 10mA
Positive
Negative
Positive
Negative
Positive
Negative
Positive
Negative
Positive
Negative
Positive
Negative
Positive
Negative
q 6.5
q –6
q 5.25
q – 4.5
q 6.25
q – 5.5
q 18
q – 17.7
q 16
q – 15.3
q 15.25
q – 14.5
q 6.25
q – 5.5
7
– 6.7
5.7
–5
7
– 6.2
18.5
– 18
17.6
– 17
17
– 16.5
7.2
– 6.5
V
V
V
V
V
V
V
V
V
V
V
V
V
V
VIN = 10V
IL = 10mA, – 10mA
Positive
Negative
q 15
q – 14.25
16.8
– 15.75
V
V
1026fb
2


Part Number LT1026
Description Voltage Converter
Maker Linear Technology
Total Page 8 Pages
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