MAX1510_11 Datasheet, PDF (12/13 Pages) Maxim Integrated Products – Low-Voltage DDR Linear Regulator Thermal Fault Protection

Low-Voltage DDR Linear Regulators
Noise, PSRR, and Transient Response
The MAX1510/MAX17510 operate with low-dropout
voltage and low quiescent current in notebook comput-
ers while maintaining good noise, transient response,
and AC rejection specifications. Improved supply-noise
rejection 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/MAX17510 load-transient response
graphs (see the Typical Operating Characteristics) show
two components 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.
PCB Layout Guidelines
The MAX1510/MAX17510 require proper layout to
achieve the intended output power level and low noise.
Proper layout 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:
• Minimize high-current ground loops. Connect the
ground of the device, the input capacitor, and the
output capacitor together at one point.
• 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.
• 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.
• 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.
PROCESS: BiCMOS
Chip Information
Package Information
For the latest package outline information and land patterns
(footprints), go to www.maxim-ic.com/packages. Note that a
“+”, “#”, or “-” in the package code indicates RoHS status only.
Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
PACKAGE
TYPE
10 TDFN
PACKAGE
CODE
T1033+1
OUTLINE
LAND
NO. PATTERN NO.
21-0137
90-0003
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