Datasheet > LTC3528

LTC3528

更新时间： 2023-12-20 18:46:14

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
18页	331K
描述
采用 3mm x 2mm DFN 封装的 1A、1MHz 同步升压型 DC/DC 转换器

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数据手册

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LTC3528 数据手册

LTC3528/LTC3528B

TYPICAL PERFORMANCE CHARACTERISTICS ^(T_A^{= 25°C unless otherwise noted)}

Oscillator Frequency Change

vs V_OUT

Burst Mode Threshold Current

vs V_IN

R_DS(ON)vs V_OUT

450

400

0.50

0.25

= 5V

NORMALIZED TO V

= 3V

OUT

–0.25

–0.50

–0.75

–1.00

–1.25

–1.50

–1.75

–2.00

–2.25

350

300

250

200

150

EXIT BURST

ENTER BURST

PMOS

NMOS

3.5

100

4.5

1.5

2.5

1.5

2.5

3.5

(V)

4.5

(V)

OUT

(V)

OUT

3528 G13

3528 G12

3528 G11

Oscillator Frequency Change

vs Temperature

R_DS(ON)Change vs Temperature

V_FBvs Temperature

1.200

1.199

1.198

1.197

–1

–2

–3

–4

–10

–20

1.196

TEMPERATURE (˚C)

100 125

TEMPERATURE (˚C)

100 125

–50 –25

75 100 125

–50 –25

TEMPERATURE (°C)

3528 G14

3528 G15

3528 G16

Burst Mode Quiescent Current vs

V_OUT(LTC3528)

Fixed Frequency V_OUTRipple and

Inductor Current Waveforms

Start-Up Voltage vs Temperature

850

800

750

700

650

600

13.5

12.5

11.5

10.5

= 1.2V

OUT

20mV/DIV

200mA/DIV

3528 G19

= 1.2V

2µs/DIV

= 3.3V

= 22µF

OUT

= 33pF

= 100mA

OUT

–50 –25

75 100 125

TEMPERATURE (°C)

(V)

OUT

3528 G17

3528 G18

3528fd

1 2 3 456 7 8...18

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