LT1054 View Datasheet(PDF) - Linear Technology

Part Name

Description

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LT1054

Switched-Capacitor Voltage Converter with Regulator

Linear Technology 

LT1054/LT1054L

TYPICAL APPLICATIONS

Basic Voltage Inverter

100µF

FB/SHDN V+

CAP+ OSC

LT1054

GND VREF

CAP – VOUT

VIN

2µF

–VOUT

100µF

LT1054 • TAO2

Basic Voltage Inverter/Regulator

VIN 2µF

FB/SHDN V+

10µF

CAP+ OSC

LT1054

GND VREF

CAP – VOUT

R1

R2

0.002µF

) ) R2

R1

=

|VOUT|

VREF

2

–

40mV

+

1

=

|VOUT|

1.21V

+

1

,

VOUT

REFER TO FIGURE 5

100µF

LT1054 • TA03

100µF

Negative Voltage Doubler

VIN

2µF

FB/SHDN V+

CAP+ OSC

LT1054

GND VREF

CAP – VOUT

+

VOUT

–

QX*

100µF RX*

VIN

VIN = –3.5V TO –15V

VOUT = 2VIN + (LT1054 VOLTAGE LOSS) + (QX SATURATION VOLTAGE)

*SEE FIGURE 3

LT1054 • TAO4

Positive Doubler

+

VOUT

50mA

–

1N4001

100µF

VIN = 3.5V TO 15V

VOUT ≈ 2VIN – (VL + 2VDIODE)

VL = LT1054 VOLTAGE LOSS

VIN

1N4001 3.5V TO 15V

10µF

FB/SHDN V+

CAP+ OSC

LT1054

GND VREF

CAP – VOUT

2µF

LT1054 • TAO5

100mA Regulating Negative Doubler

VIN

3.5 TO 15V

2.2µF

10µF

1N4002

10µF

1N4002

FB/SHDN V+

CAP+ OSC

LT1054 #1

GND VREF

CAP – VOUT

VOUT

SET

R1

40k

10µF

10µF

1N4002

FB/SHDN V+

CAP+ OSC

LT1054 #2

GND VREF

CAP – VOUT

HP5082-2810

PIN 2

20k

LT1054 #1

1N4002

100µF

10µF

R2

0.002µF

500k

VIN = 3.5 TO 15V

VOUT MAX ≈ –2VIN + [1054 VOLTAGE LOSS + 2(VDIODE)]

1N4002

–VOUT

IOUT ≅ 100mA MAX

) ) R2

R1

=

|VOUT|

VREF

2

–

40mV

+

1

=

|VOUT|

1.21V

+

1

, REFER TO FIGURE 5

10µF

LT1054 • TAO6

1054lff

10

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