LTC1261(RevA) Ver la hoja de datos (PDF) - Linear Technology

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Fabricante

LTC1261
(Rev.:RevA)

Switched Capacitor Regulated Voltage Inverter

Linear Technology 

LTC1261

TYPICAL PERFORMANCE CHARACTERISTICS (See Test Circuits)

Output Voltage

vs Output Current

–3.5

–3.6 TA = 25°C

–3.7

–3.8

–3.9

VCC = 5V

DOUBLER MODE

–4.0

VCC = 3.3V

–4.1

TRIPLER MODE

–4.2

–4.3

–4.4

–4.5

01

2 3 4 5 6 7 8 9 10

OUTPUT CURRENT (mA)

LT1261 • TP01

Maximum Output Current

vs Supply Voltage

50

VOUT = –4V ±5%

TA = 25°C

40

TRIPLER MODE

30

DOUBLER MODE

20

10

3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0

SUPPLY VOLTAGE (V)

LTC1261 • TPC04

Output Voltage (Doubler Mode)

vs Supply Voltage

–3.5

–3.6

–3.7

–3.8

–3.9

–4.0 TA = 25°C

–4.1

–4.2

TA = 85°C

TA = –40°C

–4.3

–4.4

–4.5

5.0 5.2 5.4 5.6 5.8 6.0 6.2 6.4 6.6 6.8 7.0

SUPPLY VOLTAGE (V)

LT1261 • TP02

Supply Current

vs Supply Voltage

1200

1000

VOUT = –4V

TA = 25°C

900

800

TRIPLER MODE

700

600

DOUBLER MODE

500

3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0

SUPPLY VOLTAGE (V)

LTC1261 • TPC05

Output Voltage (Tripler Mode)

vs Supply Voltage

–3.5

–3.6

–3.7

–3.8

–3.9 TA = 85°C

–4.0

TA = 25°C

–4.1

TA = –40°C

–4.2

–4.3

–4.4

–4.5

3

4

5

6

7

SUPPLY VOLTAGE (V)

LTC1261 • TPC03

Supply Current

vs Temperature

1200

1000

VOUT = –4V

900

VCC = 5V

DOUBLER MODE

800

700

VCC = 3.3V

TRIPLER MODE

600

500

–40 –20

0 20 40 60 80 100

TEMPERATURE (˚C)

LTC1261 • TPC06

TEST CIRCUITS

5V

+

10µF

0.1µF

Doubler Mode

1 VCC

SHDN 8

2 C1+

REG 7

LTC1261-4

3 C1–

OUT 6

4 GND COMP 5

VOUT = –4V ±5%

+ 3.3µF

LTC1261 • TCO1

0.1µF

0.1µF

Tripler Mode

VIN = 3.3V

10µF

14

+

2 C1+ VCC ADJ 10

3 C1–

RADJ 9

4

LTC1261CS

C2+

R1

8

5 C2–

R0 7

11

OUT

GND

+

6

LTC1261 • TC02

VOUT = –4V ±5%

3.3µF

4

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