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PE99151 Datasheet, PDF (1/15 Pages) Peregrine Semiconductor – Radiation Hardened UltraCMOS Monolithic Point-of-Load Synchronous Buck Regulator with Integrated Switches | |||
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Product Description
The PE99151 is a radiation hardened point-of-load buck
regulator delivering high efficiency at VIN = 5V and output
currents up to 2A continuous. This single-chip solution is
perfect for Hi-Rel applications and delivers peak
efficiency exceeding 93%. A minimal external
component count and high switching frequency enables
>10 W/in2 standard PCB designs while high efficiency
minimizes thermal concerns. All power switching devices
are integrated on-chip.
Fabricated in Peregrineâs patented UltraCMOS®
technology, the PE99151 offers excellent power
efficiency and intrinsic radiation tolerance.
Table 1. Radiation Performance
TID
SEL
SEB
SET
SEFI
SEGR
100 Krad(Si)
> 90 MeVâ¢cm2/mg
> 90 MeVâ¢cm2/mg
> 90 MeVâ¢cm2/mg
> 90 MeVâ¢cm2/mg
> 90 MeVâ¢cm2/mg
SEL, SEB, SEGR, SEU, SEFI: None observed, Au/60 degrees
SET: No events exceeding 30 mV transient observed @ Au,
LET=90, 60 degrees and normal incidence
Figure 1. Typical Application Diagram
Product Specification
PE99151
Hi-Rel 2A DC-DC Converter
Radiation Hardened UltraCMOS®
Monolithic Point-of-Load Synchronous
Buck Regulator with Integrated Switches
Features
ï·ï Up to 2A continuous
ï·ï Output voltage range from 1.0V to 3.6V
by external select resistors
ï·ï Input voltage range 4.6V â 6.0V
ï·ï Current mode control, pulse-by-pulse
current limit, current sharing enabled
and (N+K) redundancy compatible
shutdown mode
ï·ï SYNC function, 100 kHz â 5 MHz lock
range with selectable 500 kHz /1 MHz
free running frequency
ï·ï Shutdown pin, Power Good output pin
for supply sequencing
ï·ï Better than 1% typical initial accuracy
(25°C)
ï·ï Control inputs compatible with TTL,
LVTTL, LVCMOS (2.5V and 3.3V)
and 5V CMOS
ï·ï Available in ceramic hermetic
packaging and in bare die form
Figure 2. Package Type
32-lead ceramic package
Document No. DOC-29314-2 â www.psemi.com
©2010-2013 Peregrine Semiconductor Corp. All rights reserved.
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