Datasheet > STBB2JAD-R

STBB2JAD-R

更新时间： 2024-12-01 01:02:07

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
25页	2264K
描述
800 mA 2.5 MHz, high efficiency dual mode buck-boost DC-DC converter

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STBB2JAD-R 数据手册

STBB2

800 mA 2.5 MHz, high efficiency dual mode

buck-boost DC-DC converter

Datasheet

production data

• Cellular phones

Description

The STBB2 is a fixed frequency, high efficiency,

buck-boost DC-DC converter which provides

output voltages from 1.2 V to 4.5 V starting from

input voltage from 2.4 V to 5.5 V. The device can

operate with input voltages higher than, equal to,

or lower than the output voltage making the

product suitable for single Li-Ion, multi-cell

alkaline or NiMH applications where the output

voltage is within the battery voltage range. The

low-R_DS(on)N-channel and P-channel MOSFET

switches are integrated and help to achieve high

efficiency. The MODE pin allows the selection

between auto mode and forced PWM mode,

taking advantage from either lower power

consumption or best dynamic performance. The

bypass function allows the battery power saving.

In this operating mode, the high-side switches are

turned on so that the output voltage is equal to the

input voltage; in this condition the current

consumption is reduced to a maximum of 5 µA.

The device also includes soft-start control,

thermal shutdown, and current limit. The STBB2

is packaged in Flip Chip 20 bumps with 0.4 mm

pitch.

Flip Chip 20 (2.1 x 1.8 mm)

Features

• Operating input voltage range from 2.4 V to

5.5 V

• ± 2% output voltage tolerance over process

and temperature variations

• Bypass power save function

• Selectable output voltage with dedicated VSEL

• Very fast line and load transients

• 2.5 MHz switching frequency

• Power save mode (PS) at light load

• Typical efficiency higher than 90%

• 50 µA max. quiescent current

• Flip Chip 20 bumps 0.4 mm pitch 2.1 x 1.8 mm

Applications

• Memory card supply

Table 1. Device summary

Order codes

Markings

Packaging

Output voltages

STBB2JAD-R

STBB2J29-R

STBB2J30-R

BB2

B229

B230

Tape and reel

Adjustable

2.9 V / 3.4 V

3.0 V / 3.3 V

February 2014

DocID022745 Rev 9

1/25

This is information on a product in full production.

www.st.com

12 3 4 5 6 7...25

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