RT9199GSP Ver la hoja de datos (PDF) - Richtek Technology

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componentes Descripción

Fabricante

RT9199GSP

Cost-Effective, 2A Peak Sink/Source Bus Termination Regulator

Richtek Technology 

RT9199

Typical Application Circuit

VCNTL = 5V

VIN = 1.8V

2N7002

EN

R1

VIN

VCNTL

RT9199

REFEN

VOUT

R2

CSS

GND

RTT

CIN CCNTL

COUT RDUMMY

R1 = R2 = 100kΩ, RTT = 50Ω / 33Ω / 25Ω

COUT(MIN) = 10μF (Ceramic) + 1000μF under the worst case testing condition

RDUMMY = 1kΩ as for VOUT discharge when VIN is not presented but VCNTL is presented

CSS = 1μF, CIN = 470μF (Low ESR), CCNTL = 47μF

Test Circuit

VIN = 1.8V

VCNTL = 5V

1.25V

VIN

VCNTL

RT9199

REFEN

VOUT

GND

VOUT

COUT V

IL

Figure 1. Output Voltage Tolerance, ΔVLOAD

VIN = 1.8V

A

VCNTL = 5V

0.9V

VIN

VCNTL

RT9199

REFEN

VOUT

0.15V

GND

RL

VOUT

0.9V

0V

COUT V

RL and COUT

Time deleay

Figure 2. Current in Shutdown Mode, ISTBY

www.richtek.com

2

DS9199-07 September 2007

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