Datasheet > LM8801

LM8801

更新时间： 2022-10-12 16:24:08

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High Precision 6MHz, 600 mA Synchronous Step-Down DC-DC Converter for Mobile Applications

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LM8801 数据手册

LM8801

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SNVS597H –APRIL 2009–REVISED MAY 2013

LM8801 High Precision 6MHz, 600 mA Synchronous Step-Down DC-DC Converter for

Mobile Applications

Check for Samples: LM8801

FEATURES

APPLICATIONS

•

Over 90% Efficiency at 6 MHz Operation

600 mA Maximum Load Capability

•

Mobile Phones

•

MP3 players

6 MHz PWM Fixed Switching Frequency (typ.)

27 µA (typ.) Quiescent Current in PFM Mode

Wide Input Voltage Range: 2.3V to 5.5V

V_OUT= 1.0V to 2.9V with 50 mV steps

Wireless LAN

PDAs, Pocket PCs

Portable Hard Disk Drives

DESCRIPTION

±1.5% DC Output Voltage Precision Over

Temperature

The LM8801 step-down DC-DC converter is

optimized for powering ultra-low voltage circuits from

a single Li-Ion cell and input voltage rails from 2.3V to

5.5V. It provides up to 600 mA load current over the

entire input voltage range.

•

Best-in-Class Load Transient Response

Low Output Ripple in PFM Mode

Automatic PFM/PWM Mode Switching

Current Overload and Thermal Shutdown

Protection

The LM8801 has a mode-control pin that allows the

user to select continuous PWM operation over the

complete load range or an auto PFM-PWM mode that

changes modes automatically depending on the load.

During PWM mode, the device operates at a fixed-

frequency of 6 MHz (typ.). In Auto PFM-PWM mode,

hysteretic PFM extends the battery life through

reduction of the quiescent current during light loads

and system standby.

•

Internal Soft-Start

6-bump DSBGA Package

–

(1.065 x 1.265 , 0.6 mm or 0.25 mm height)

•

Total Solution Size < 7mm²(works with 0402

capacitors)

UVLO

The LM8801 is available in a 6-bump DSBGA

package. Only three compact external surface-mount

components, an inductor and two capacitors, are

required.

Efficiency vs. Output Current

(Auto Mode, V_OUT= 1.82V)

Typical Application Circuit

100

2.3V

2.7V

4.2V

3.6V

= 4.7 µF, TDK

OUT

L = 0.5 µH, FDK

10 100

OUTPUT CURRENT (mA)

0.1

1000

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...23

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型号	品牌	描述	获取价格	数据表
LM8801_15	TI	High Precision 6MHz, 600 mA Synchronous Step-Down DC-DC Converter for Mobile Applications	获取价格
LM8801TME-1.2/NOPB	TI	High Precision 6MHz, 600 mA Synchronous Step-Down DC-DC Converter for Mobile Applications	获取价格
LM8801TME-1.82	NSC	High Precision 6MHz, 600 mA Synchronous Step-Down DC-DC Converter for Mobile Applications	获取价格
LM8801TME-1.82/NOPB	TI	High Precision 6MHz, 600 mA Synchronous Step-Down DC-DC Converter for Mobile Applications	获取价格
LM8801TME-2.9/NOPB	TI	High Precision 6MHz, 600 mA Synchronous Step-Down DC-DC Converter for Mobile Applications	获取价格
LM8801TMX-1.2/NOPB	TI	High Precision 6MHz, 600 mA Synchronous Step-Down DC-DC Converter for Mobile Applications	获取价格

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