Datasheet > LM8801

LM8801

更新时间： 2022-10-12 16:24:08

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
23页	1629K
描述
High Precision 6MHz, 600 mA Synchronous Step-Down DC-DC Converter for Mobile Applications

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LM8801 数据手册

LM8801

SNVS597H –APRIL 2009–REVISED MAY 2013

www.ti.com

Typical Performance Characteristics

LM8801TM-1.82, Typical Application Circuit (page 1), V_OUT= 1.82V, V_IN= 3.6V, T_A= 25°C, C_IN= 2.2 µF, 0402

(JMK105BJ225MV-F), C_OUT= 4.7 µF, 0402, 6.3V (CL05A475MQ5NRNC), L = 0.5 µH, 2012 (MIPSZ2012D0R5), unless

otherwise noted.

Efficiency

vs.

Efficiency

vs.

Output Current (Auto Mode)

Output Current (PWM Mode)

100

2.3V

2.7V

2.3V

2.7V

4.2V

3.6V

4.2V

0.1

100

1000

0.1

100

1000

OUTPUT CURRENT (mA)

Figure 1.

Figure 2.

Efficiency

vs.

Efficiency

vs.

Output Current,

Auto Mode, V_OUT= 1.2V

Output Current (PWM Mode)

100

2.3V

= 2.3V

= 3.6V

2.7V

3.6V

= 4.2V

4.2V

100 200 300 400 500 600

0.1

100

1000

OUTPUT CURRENT (mA)

Figure 3.

Figure 4.

Output Voltage

vs.

Output Current (Auto Mode)

Output Voltage

vs.

Supply Voltage (PWM)

1.845

1.840

1.825

1.823

1.821

1.819

1.817

1.815

2.7V

PFM

= 600 mA

OUT

1.835

1.830

3.6V

PWM

1.825

= 160 mA

4.2V

OUT

1.820

1.815

= 300 mA

OUT

2.3 2.8 3.3 3.8 4.3 4.8 5.3 5.8

100 200 300 400 500 600 700

OUTPUT CURRENT (mA)

SUPPLY VOLTAGE (V)

Figure 5.

Figure 6.

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