LM2770 datasheet(8/14 Pages) NSC

Part #	LM2770

Description	High Efficiency Switched Capacitor Step-Down DC/DC Regulator with Sleep Mode

PDF	14 Pages

Scroll/Zoom	100%

Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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8 / 14 page

Typical Performance Characteristics Unless otherwise specified: C

IN = 10µF, C1 = 1.0µF, C2 =

1.0µF, C

OUT = 10µF, TA =25

oC. Capacitors are low-ESR multi-layer ceramic capacitors (MLCC’s). (Continued)

Load Regulation: V

OUT = 1.2V

Load Regulation: V

OUT = 1.5V

20126009

20126008

Load Regulation: V

OUT = 1.575V

Output Voltage Ripple

20126020

20126013

VIN = 3.6V, VOUT = 1.5V, IOUT = 200mA

CH1: CIN =COUT = 2x10µF; C1 = C2 = 1µF; Scale: 50mV/Div

CH2: CIN =COUT = 10µF; C1 = C2 = 1µF; Scale: 50mV/Div

Time scale: 4µs/Div

Input Voltage RIpple

Start-up Behavior

20126014

VIN = 3.6V, VOUT = 1.5V, IOUT = 200mA

CH1: CIN =COUT = 2x10µF; C1 = C2 = 1µF; Scale: 50mV/Div

CH2: CIN =COUT = 10µF; C1 = C2 = 1µF; Scale: 50mV/Div

Time scale: 4µs/Div

20126012

VIN = 3.6V, VOUT = 1.5V, Load = 7.5Ω (200mA)

CH1: EN pin; Scale: 1V/Div

CH2: VOUT; Scale: 500mV/Div

Time scale: 40µs/Div

LM2770 Datasheet(PDF) 8 Page - National Semiconductor (TI)