STBB3JCC datasheet(1/27 Pages) STMICROELECTRONICS

部件名	STBB3JCC

功能描述	2 A, high efficiency single inductor buck-boost DC-DC converter and high brightness WLED driver

PDF	27 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 27 page

This is information on a product in full production.

December 2015

DocID025425 Rev 5

1/27

27

STBB3JCC

2 A, high efficiency single inductor buck-boost DC-DC converter

and high brightness WLED driver

Datasheet

- production data

Features

• 100 mV feedback signal

• Input voltage range from 1.8 V to 5.5 V

• 2 A output current at 3.3 VOUT in buck mode

(VIN= 3.6 V to 5.5 V)

• 800 mA output current at 3.3 VOUT in boost

mode (VIN ≥ 2.0 V)

• Typical efficiency higher than 94%

• Automatic transition between step-down and

boost mode

• Adjustable output voltage from 1.2 V to 5.5 V

• Power save mode (PS) at light load

• 2.0 MHz fixed switching frequency

• Adjustable switching frequency up to 2.4 MHz

(by external synchronous square signal)

• Device quiescent current less than 50 μA

• Load disconnect during shutdown

• Shutdown function and soft-start

• Shutdown current < 1 μA

• Available in Flip Chip 20, pitch = 0.4 mm

Applications

• HB WLED driver

• Single cell Li-Ion, two-cell and three-cell

alkaline, Ni-MH powered devices

• Memory card supply

• Tablet, smartphones

• Digital cameras

Description

The STBB3JCC is a fixed frequency, high

efficiency, buck-boost DC-DC converter which

provides output voltages from 1.2 V to 5.5 V

starting from input voltage from 1.8 V to 5.5 V.

Thanks to very low sensing voltage, only 100 mV

and very low RDS(on) of integrated power

MOSFET, it achieves very high efficiency driving

high brightness white LED in constant current

mode. The device can operate with input voltages

higher than, equal to, or lower than the output

voltage making the product suitable for cell

lithium-Ion applications where the output voltage

is within the battery voltage range. 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 device also includes soft-start

control, thermal shutdown, and current limit. The

STBB3JCC is packaged in Flip Chip 20 bumps

with 2.5 x 1.75 mm.

Flip Chip 20, pitch = 0.4 mm

Table 1. Device summary

Order code

Part number

Marking

Packing

Output voltage

STBB3JCCR

STBB3JCC

BB3CC

Flip Chip20

Adjustable

www.st.com

类似零件编号 - STBB3JCC

制造商	部件名	数据表	功能描述
STMicroelectronics	STBB3J	1Mb / 25P	2 A, high efficiency single inductor buck-boost DC-DC converter 10-Dec-2015

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