Linear Technology LTM8028EY Demo Board, µModule Regulator with Low Noise LDO Post-Regulator, 6V ≤ VIN ≤ 36V, VOUT = 0.8V to 1.8V @ 5A Line DC1738A Ficha De Dados
Códigos do produto
DC1738A
LTM8028
1
8028fa
For more information
www.linear.com/LTM8028
Typical applicaTion
FeaTures
DescripTion
36V
IN
, UltraFast,
Low Output Noise 5A
µModule Regulator
The
is a 36V
IN
, 5A µModule
®
regulator, con-
sisting of an UltraFast™ 5A linear regulator preceded by a
high efficiency switching regulator. In addition to providing
tight output regulation, the linear regulator automatically
controls the output voltage of the switcher to provide
optimal efficiency and headroom for dynamic response.
The output voltage is digitally selectable in 50mV incre-
The output voltage is digitally selectable in 50mV incre-
ments over a 0.8V to 1.8V range. An analog margining
function allows the user to adjust system output voltage
over a continuous ±10% range, and a single-ended feed-
back sense line may be used to mitigate IR drops due to
parasitic resistance.
The LTM8028 is packaged in a compact (15mm
The LTM8028 is packaged in a compact (15mm
× 15mm ×
4.92mm) overmolded ball grid array (BGA) package suit-
able for automated assembly by standard surface mount
equipment. The LTM8028 is available with SnPb (BGA) or
RoHS compliant terminal finish.
applicaTions
n
Switching Step-Down Converter for High Efficiency
n
Digitally Programmable V
OUT
: 0.8V to 1.8V
n
Input Voltage Range: 6V to 36V
n
Very Tight Tolerance Over Temperature, Line, Load
and Transient Response
n
Low Output Noise: 40μV
RMS
(10Hz to 100kHz)
n
Parallel Multiple Devices for 10A or More
n
Accurate Programmable Current Limit to Allow
Asymmetric Power Sharing
n
Analog Output Margining: ±10% Range
n
Synchronization Input
n
Stable with Low ESR Ceramic Output Capacitors
n
15mm
× 15mm × 4.92mm Surface Mount
BGA Package
n
SnPb or RoHS Compliant Finish
n
FPGA and DSP Supplies
n
High Speed I/O
n
ASIC and Microprocessor Supplies
n
Servers and Storage Devices
L
, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks
and UltraFast is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
+
LINEAR
REGULATOR
V
IN
V
OUT
SENSEP
BKV
RUN
150k
V
IN
9V TO 15V
82.5k
f = 500kHz
0.01µF
MARGA
IMAX
SS
PGOOD
100µF
RT
GND
V
OB
V
O0
V
O1
V
O2
470µF
8028 TA01a
137µF
V
OUT
1.2V
5A
SYNC
LTM8028
10µF
V
OUT
20mV/DIV
FULL LOAD
NOISE AND RIPPLE
500µV/DIV
I
OUT
2A/DIV
∆I
OUT
= 0.5A TO 5A
1µs RISE/FALL TIME
10µs/DIV
8028 TA01b
1µs/DIV
MEASURED PER AN70, 150MHz BW
Low Output Noise, 1.2V, 5A µModule Regulator
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