LTC3809IDD-1-TR datasheet(5/24 Pages) LINER

Part #	LTC3809IDD-1-TR

Description	No RSENSETM, Low Input Voltage, Synchronous DC/DC Controller with Output Tracking

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Manufacturer	LINER [Linear Technology]

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LTC3809-1

5

38091fc

VOUT

1.8V

Vx

2.5V

500mV/DIV

10ms/DIV

VIN = 4.2V

RTA = 590

RTB = 1.18k

FIGURE 8 CIRCUIT

38091 G09

VOUT

1.8V

Vx

2.5V

500mV/DIV

10ms/DIV

VIN = 4.2V

RTA = 590

RTB = 1.18k

FIGURE 8 CIRCUIT

38091 G10

VOUT

1.8V

Vx

2.5V

500mV/DIV

10ms/DIV

VIN = 4.2V

RTA = 590

RTB = 1.69k

FIGURE 8 CIRCUIT

38091 G11

TEMPERATURE (°C)

–60

0.594

0.596

0.598

0.600

0.602

–20

20

60

100

38091 G012

0.604

0.606

–40

0

40

80

TEMPERATURE (°C)

–60

2.15

2.20

2.25

2.30

2.35

2.40

2.45

–20

20

60

100

38091 G13

2.50

2.55

–40

0

40

80

VIN RISING

VIN FALLING

TEMPERATURE (°C)

–60

1.00

1.05

–20

20

60

100

38091 G14

1.15

1.10

1.20

–40

0

40

80

TEMPER

–60

115

120

125

130

–20

20

60

100

38091 G15

ATURE (°C)

135

–40

0

40

80

IPRG = FLOAT

TEMPERATURE (°C)

–60

0.94

–20

20

60

100

38091 G16

0.96

0.98

1.04

1.02

1.00

–40

0

40

80

TRACK/SS = 0V

Regulated Feedback Voltage

vs Temperature

Undervoltage Lockout Threshold

vs Temperature

Shutdown (RUN) Threshold

vs Temperature

Maximum Current Sense

Threshold vs Temperature

TRACK/SS Start-Up Current

vs Temperature

Start-Up with Coincident Tracking

(VOUT = 0V at 0s)

Start-Up with Coincident Tracking

(VOUT = 0.8V at 0s)

Start-Up with Ratiometric Tracking

(VOUT = 0V at 0s)

TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.

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LTC3809IDD-1-TR Datasheet(PDF) 5 Page - Linear Technology

LTC3809IDD-1-TR Datasheet(HTML) 5 Page - Linear Technology

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