Datasheet > BU33UV7NUX

BU33UV7NUX

更新时间： 2023-09-03 20:25:10

品牌	Logo	应用领域
罗姆 - ROHM		电池转换器
页数	文件大小	规格书
23页	2017K
描述
BU33UV7NUX是消耗电流较低的同步整流升压DCDC转换器，作为升压电源，适用于使用2节碱性、镍镉、镍氢电池或1节锂离子、锂聚合物电池的产品。即使2节干电池的电压降至1.8V，仍可提供最大500mA输出负载。而且，BU33UV7NUX还搭载了复位IC功能（检出：1.5V, 解除：1.9V）。BU33UV7NUX的输出电压固定为3.3V，如果Vin电压超过3.3V的输出电压，则Vin与Vout会在内部连接。

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BU33UV7NUX 数据手册

Datasheet

Synchronous Boost DC/DC Converter

(LOAD:500mA@V_OUT=3.3V, V_IN=1.8V)

BU33UV7NUX

General Description

Key Specifications

BU33UV7NUX is a synchronous boost convertor with low

power consumption and provides a power supply for

products powered by either two-cell alkaline/NiCd/NiMH

or one-cell alkaline/Li-ion or Li-polymer battery.

Output currents can go as high as 500mA(V_IN=1.8V).

BU33UV7NUX has reset circuit. (Detection voltage:1.5V,

Release Voltage:1.9V)

■

Input Voltage Range

Fixed Output Voltage

Efficiency

0.6V to 4.5V

3.3V

94%(Max)

Current Consumption

7μA(MODE=Low)

13μA(MODE=High)

0.9V

■

Start-up Voltage

BU33UV7NUX output voltage is fixed 3.3V by internal

resistor divider. V_OUTis connected with V_INwhen V_IN

voltage is higher than 3.3V.

Package

VSON010X3020

W(Typ) x D(Typ) x H(Max)

3.00mm x 2.00mm x 0.60mm

Features

■

Synchronous Boost DC/DC Converter

Iomax 500mA @V_OUT=3.3V, V_IN=1.8V(Ta=25°C)

Disconnect Function during EN-OFF and UVLO

Auto-PFM/PWM (MODE=H(=V_IN)),

■

Fixed PFM (MODE=L(=0V))

■

Reset Function (Detect Voltage = 1.5V)

Pass-Through Function (V_IN> V_OUT

Thermal Shutdown

)

Applications

10-Pin “VSON010X3020” Package

■

Single-Cell or Two-Cell Alkaline

NiCd/NiMH or Single-Cell Li Battery-Powered Products

IC Recorders

Wireless Mouse

Portable Audio Players

Cellular Phones

Personal Medical Products

Remote Controllers

Typical Application Circuit

Typical Performance Characteristics

V_IN

Efficiency(V_IN=2.4V, V_OUT=3.3V)

100

C0:10µF

INTLDO

C2:1µF

VIN

PGND

AGND

L0:4.7µH

MODE=L

MODE=H

VOUT

MODE

V_OUT

V_IN

RSTB

MODE=H: Auto-PFM/PWM

MODE=L: Fixed PFM

0.1

100

1000

Output Current:I_OUT[mA]

Figure 1. Application Circuit

Figure 2. Efficiency

〇Product structure : Silicon monolithic integrated circuit 〇This product has no designed protection against radioactive rays

www.rohm.com

TSZ02201-0Q1Q04000300-1-2

21.Feb.2019 Rev.003

1/20

TSZ22111 • 14 • 001

12 3 4 5 6 7...23

中文翻译

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