MAX1510(2004) 데이터 시트보기 (PDF) - Maxim Integrated

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MAX1510
(Rev.:2004)

Low-Voltage DDR Linear Regulator

Maxim Integrated 

Low-Voltage DDR Linear Regulator

Noise, PSRR, and Transient Response

The MAX1510 operates with low-dropout voltage and

low quiescent current in notebook computers while

maintaining good noise, transient response, and AC

rejection specifications. Improved supply-noise rejec-

tion and transient response can be achieved by

increasing the values of the input and output capaci-

tors. Use passive filtering techniques when operating

from noisy sources.

The MAX1510 load-transient response graphs (see the

Typical Operating Characteristics) show two compo-

nents of the output response: a DC shift from the output

impedance due to the load-current change and the

transient response. A typical transient response for a

step change in the load current from -1.5A to +1.5A is

10mV. Increasing the output capacitor’s value and

decreasing the ESR attenuate the overshoot.

PC Board Layout Guidelines

The MAX1510 requires proper layout to achieve the

intended output power level and low noise. Proper lay-

out involves the use of a ground plane, appropriate

component placement, and correct routing of traces

using appropriate trace widths. Refer to the MAX1510

evaluation kit for a layout example.

1) Minimize high-current ground loops. Connect the

ground of the device, the input capacitor, and the

output capacitor together at one point.

2) To optimize performance, a ground plane is essen-

tial. Use all available copper layers in applications

where the device is located on a multilayer board.

3) Connect the input filter capacitor less than 10mm

from IN. The connecting copper trace carries large

currents and must be at least 2mm wide, preferably

5mm wide.

4) Connect the backside pad to a large ground plane.

Use as much copper as necessary to decrease the

thermal resistance of the device. In general, more

copper provides better heatsinking capabilities.

Chip Information

TRANSISTOR COUNT: 3496

PROCESS: BiCMOS

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