LM2773_15 datasheet(8/18 Pages) TI

номер детали	LM2773

подробное описание детали	LM2773 Low-Ripple 1.8V/1.6V Spread-Spectrum Switched Capacitor Step-Down Regulator

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LM2773

SNVS554A – JANUARY 2008 – REVISED MAY 2013

www.ti.com

Typical Performance Characteristics (continued)

Unless otherwise specified: VIN = 3.6V, CIN = C1 = C2 = 1.0µF, COUT = 4.7µF, V(EN) = 1.8V, V(SEL) = 0V, TA = 25°C.

Capacitors are low-ESR multi-layer ceramic capacitors (MLCC's).

Load Step 0mA to 300mA, VIN = 3.6V, 1.6V Mode

Load Step 300mA to 0mA, VIN = 3.6V, 1.6V Mode

CH2: VOUT; Scale: 100mV/Div

DC Coupled, Offset 1.633V

CH4: IOUT; Scale: 100mA/Div

Time scale: 4ms/Div

Figure 15.

Figure 16.

1.8V Mode Startup, Load = 300mA

1.6V Mode Startup, Load = 300mA, VSEL = VIN

CH1: VEN; Scale: 5V/Div, DC Coupled

CH2: VOUT; Scale: 500mV/Div, DC Coupled

Time scale: 10µs/Div

Figure 17.

Figure 18.

8

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