LM3370 datasheet(12/33 Pages) TI1

Part #	LM3370

Description	Dual Synchronous Step-Down DC-DC Converter with Dynamic Voltage Scaling Function

PDF	33 Pages

Scroll/Zoom	100%

Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

Logo

12 / 33 page

1.8V

100 Ps/DIV

3.3V

BUCK2 at 100 mV/STEP

20 kHz/DIV

5 dB/DIV

1.92 1.94 1.96 1.98 2.0 2.02 2.04 2.06 2.08 2.1 2.12

11 dB

No Spread Spectrum

With Spread

Spectrum

RBW = 1 kHz

1.8V

100 Ps/DIV

3.3V

BUCK2 at 100 mV/STEP

LM3370

SNVS406M – NOVEMBER 2005 – REVISED AUGUST 2011

www.ti.com

TYPICAL PERFORMANCE CHARACTERISTICS (continued)

LM3370SD/TL, Circuit of Typical Application Circuit (page 1), VIN = 3.6V, VOUT1 = 1.5V & VOUT2 = 2.5V, L = 2.2 µH

(NR3015T2R2M), CIN = 4.7 µF (0805) and COUT = 10 µF (0805) & TA = 25°C, unless otherwise noted.

Load Transient in PWM MODE

Load Transient in PFM MODE (VOUT1 = 1.8V)

(VIN = 3.6V, VOUT1 = 1.2V)

Load Transient in PWM MODE

(VIN = 3.6V, VOUT1 = 1.5V)

(VIN = 3.6V, VOUT2 = 2.5V)

Spread Spectrum Enabling

VOUT Stepping

(VOUT Signal at 2 MHz)

(From 1.8V to 3.3V)

VOUT Stepping

(From 3.3V to 1.8V)

Submit Documentation Feedback

Product Folder Links: LM3370

LM3370 Datasheet(PDF) 12 Page - Texas Instruments