Datasheet > BU34DV7NUX-E2

BU34DV7NUX-E2

更新时间： 2024-10-02 12:50:43

品牌	Logo	应用领域
罗姆 - ROHM		转换器
页数	文件大小	规格书
27页	990K
描述
1.8V to 5.5V, 300mA 1ch Synchronous Boost DC/DC Converter

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中文翻译

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BU34DV7NUX-E2 数据手册

BU34DV7NUX

Datasheet

1.8V to 5.5V, 300mA 1ch

Synchronous Boost DC/DC Converter

BU34DV7NUX

●General Description

The BU34DV7NUX devices provide a power supply

solution for products powered by either two-cell alkaline,

NiCd or NiMH, or one-cell Li-ion or Li-polymer battery.

Output currents can go as high as 300mA while using

two alkaline, and discharge it down to 1.8 V.

With the MODE pin, the BU34DV7NUX provides mode

selection of PWM control or PFM/PWM automatic

switching control. When load current is large, the

product switches automatically to the PWM mode so that

high efficiency is achievable over a wide range of load

conditions. The maximum peak current in the boost

switch is typically limited to a value of 1.85A.

＜Available Features with MODE=0V＞

・Pass-Through Function2 during EN-OFF

・Disconnect Function during UVLO

・UVLO-detect Voltage:1.8V(typ)

・UVLO-release Voltage:2.0V(typ)

・PWM(Switching Frequency 600kHz)

＜Available Features with MODE=VIN＞

・Disconnect Function during EN-OFF and UVLO

・UVLO-detect Voltage:1.8V(typ)

・UVLO-release Voltage:2.0V(typ)

・PFM/PWM(Switching Frequency to 600kHz)

●Applications

BU34DV7NUX output voltage is fixed by an internal

resistor divider. When VIN voltage is higher than 3.4 V,

Vout is connected with Vin.

・Two-Cell Alkaline, NiCd or NiMH or

Single-Cell Li Battery-Powered Products

・Portable Audio Players

・PDA

・Cellular Phones

●Features

・Synchronous Boost DC/DC Converter(PFM/PWM)

300mA @Vout=3.4V, Vin=1.8V

・Fixed Output voltage (3.4V)

・Pass-Through Function1 (VIN > VOUT<3.4V>)

・Thermal Shutdown

・Personal Medical Products

●Package

10-pin small “VSON010X3030” package.

<3.1mm (Typ.) x 3.1mm (Typ.) x 0.6mm (Max.)>

・VSON010X3030 (Small Package)

●Key Specifications

■ Input voltage range:

■ Output Voltage range:

■ Output current:

1.8V to 5.5V

3.33V to 3.47V

300mA (Max.)

0.6MHz (Typ.)

160mΩ (Typ.)

90mΩ (Typ.)

4.5µA (Max.)

1.5µA (Max.)

-40℃to+85℃

■ Switching frequency:

■ Pch FET ON resistance:

■ Nch FET ON resistance:

■ Standby current (MODE=0V):

■ Standby current (MODE=VIN):

■ Operating temperature range:

VSON010X3030

●Typical Application Circuit

●Typical Performance characteristics

EfficiencyTemp=25

℃

Necessary at PFM

100.0

90.0

80.0

70.0

60.0

50.0

40.0

30.0

20.0

10.0

0.0

PFM2.4V

OUT

VOUT

VIN

PFM1.8V

PWM1.8V

PGND

AGND

RSTBC

COMP

PWM2.4V

MODE

RSTBO

0.1

100

1000

Iout [mA]

Figure 1. Application Circuit

Figure 2. Efficiency

○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays.

.www.rohm.com

TSZ02201-0Q1Q0AH00100-1-2

02.Aug.2012 Rev.001

1/24

TSZ22111・14・001

12 3 4 5 6 7...27

中文翻译

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与BU34DV7NUX-E2相关器件

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BU34TA2WHFV	ROHM	获取价格	1ch 200mA CMOS LDO Regulators
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BU34TA2WNVX	ROHM	获取价格	1ch 200mA CMOS LDO Regulators
BU34TA2WNVX-TR	ROHM	获取价格	High-speed Load Response FULL CMOS LDO Regulators
BU34TD2WNVX	ROHM	获取价格	1ch 200mA CMOS LDO Regulators
BU34TD2WNVX-GTL	ROHM	获取价格	Fixed Positive LDO Regulator
BU34TD2WNVX-TL	ROHM	获取价格	Fixed Positive LDO Regulator, 3.4V, 0.42V Dropout, CMOS, PDSO4, 1 X 1 MM, 0.60 MM HEIGHT,
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