LM3668 datasheet(12/30 Pages) TI

Part #	LM3668

Description	1-A, High-Efficiency Dual-Mode Single-Inductor Buck-Boost DC-DC Converter

PDF	30 Pages

Scroll/Zoom	100%

Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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12 / 30 page

500 2s/DIV

5V/DIV

mv/DIV

500

mA/DIV

SW2

SW1

VOUT_AC

LOAD

500 2s/DIV

2V/DIV

mv/DIV

500

mA/DIV

SW2

SW1

VOUT_AC

LOAD

LM3668

SNVS449O – JUNE 2007 – REVISED APRIL 2015

www.ti.com

Typical Characteristics (continued)

Typical Application Circuit (see Figure 46): VIN = 3.6 V, L = 2.2 µH, CIN = 10 µF, COUT = 22 µF

(4), T

A = 25°C , unless otherwise

stated.

Figure 37. Typical Switching Waveform in Buck Mode (PWM

Figure 38. Typical Switching Waveform in Boost Mode (PFM

Mode) VIN = 4 V, VOUT = 3.4 V, Load = 500 mA

Mode) VIN = 3 V, VOUT = 3.4 V, Load = 50 mA

Figure 39. Typical Switching Waveform in Buck Mode (PFM Mode) VIN = 4 V, VOUT = 3.4 V, Load = 50 mA

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LM3668 Datasheet(PDF) 12 Page - Texas Instruments