LTC3554EPD datasheet(9/36 Pages) LINER

tên linh kiện	LTC3554EPD

Giải thích chi tiết về linh kiện	Micropower USB Power Manager with Li-Ion Charger and Two Step-Down Regulators

PDF	36 Pages

Scroll/Zoom	100%

nhà sản xuất	LINER [Linear Technology]

Trang chủ	http://www.linear.com

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9 / 36 page

LTC3554

3554f

Step-Down Switching Regulator

Output Transient

Step-Down Switching Regulator

Output Transient

Step-Down Switching

Regulator Switch Impedance

vs Temperature

Step-Down Switching Regulator

Short-Circuit Current

vs Temperature

TYPICAL PERFORMANCE CHARACTERISTICS

Step-Down Switching

Regulator Feedback Voltage

vs Output Current

Step-Down Switching Regulator

Start-Up Waveform

TA = 25°C, unless otherwise speciﬁed.

TEMPERATURE (°C)

–75 –50 –25

75 100

150

125

400

440

460

500

480

3554 G19

420

STBY = L

VOUT2 = 1.2V

STBY = H

VOUT2

20mV/DIV

(AC)

5mA

10μA

IOUT2

3554 G26

50μs/DIV

VOUT1 = 3.3V

STBY = L

VOUT1

100mV/DIV

(AC)

150mA

5mA

IOUT1

3554 G27

200μs/DIV

TEMPERATURE (°C)

–75 –50 –25

75 100

150

125

0.4

0.6

1.6

0.8

1.0

1.2

1.4

3554 G20

0.2

PMOS

NMOS

BVIN = 3.2V

STBY = L

OUTPUT CURRENT (mA)

3554 G21

0.1

100

1000

0.780

0.790

0.795

0.820

0.800

0.805

0.810

0.815

0.785

3.8V

STBY = L

VOUT2 = 1.2V

IOUT2 = 50mA

ROUT1 = 22Ω

STBY = L

VOUT2

50mV/DIV

(AC)

VOUT1

1V/DIV

IL1

100mA/DIV

PWR_ON1

0mA

3554 G28

100μs/DIV

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