LTC3576_15 datasheet(10/48 Pages) LINER

Part #	LTC3576

Description	Switching Power Manager with USB On-the-Go Triple Step-Down DC/DCs

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC3576/LTC3576-1

10

3576fb

Battery Charging from USB-HV

BUCK-USB

USB OTG from BAT-HV BUCK-BAT

Oscillator Frequency

vs Temperature

OVP Connect Waveform

OVP Disconnect Waveform

Rising OVP Threshold

vs Temperature

OVGATE vs OVSENS

OVGATE Quiescent Current

vs Temperature

RST3, CHRG Pin Current

vs Voltage (Pull-Down State)

VOUT

1V/DIV

AC COUPLED

VBUS

100mV/DIV

AC COUPLED

VSW

5V/DIV

HVOK

5V/DIV

0V

500μs/DIV

3576 G28

VBUS = 5V

HVIN = 12V

USING LT3653

VOUT

1V/DIV

AC COUPLED

VBUS

200mV/DIV

AC COUPLED

IBAT

1A/DIV

HVOK

5V/DIV

0V

500μs/DIV

3576 G29

VBAT = 3.8V

IBUS = 285mA

HVIN = 12V

USING LT3653

0A

TEMPERATURE (°C)

–40

2.20

2.25

2.30

60

3576 G30

2.15

2.10

2.05

–15

10

35

85

VOUT = 5V

VOUT = 4.2V

VOUT = 3.6V

VOUT = 3V

VOUT = 2.7V

VBUS

5V/DIV

OVGATE

5V/DIV

500μs/DIV

3576 G31

OVP INPUT

VOLTAGE

0V TO 5V

STEP 5V/DIV

VBUS

5V/DIV

OVGATE

5V/DIV

500μs/DIV

3576 G32

OVP INPUT

VOLTAGE

5V TO 10V

STEP 5V/DIV

TEMPERATURE (°C)

–40

6.270

6.275

6.280

60

3576 G33

6.265

6.260

6.255

–15

10

35

85

INPUT VOLTAGE (V)

0

2

4

6

8

10

12

24

6

8

3576 G34

OVSENS CONNECTED

TO INPUT THROUGH

6.2k RESISTOR

TEMPERATURE (°C)

–40

33

35

37

60

3576 G35

31

29

27

–15

10

35

85

VOVSENS = 5V

RST3, CHRG PIN VOLTAGE (V)

0

60

80

100

4

3576 G36

40

20

0

1

2

3

5

VBUS = 5V

BAT = 3.8V

TYPICAL PERFORMANCE CHARACTERISTICS T

A = 25°C unless otherwise speciﬁed.

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LTC3576 Datasheet(PDF) 10 Page - Linear Technology

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