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Peregrine Semiconductor - Monolithic Point-of-Load Synchronous Buck Regulator

Numéro de référence PE99151
Description Monolithic Point-of-Load Synchronous Buck Regulator
Fabricant Peregrine Semiconductor 
Logo Peregrine Semiconductor 





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PE99151 fiche technique
Product Description
The PE99151 is a radiation tolerant 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 Peregrine’s 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 MeV•cm2/mg
> 90 MeV•cm2/mg
> 90 MeV•cm2/mg
> 90 MeV•cm2/mg
> 90 MeV•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 Tolerant UltraCMOS®
Monolithic Point-of-Load Synchronous
Buck Regulator with Integrated Switches
Features
 Up to 2A continuous
 Output voltage range from 1.0–3.6V
by external select resistors
 Input voltage range 4.6V – 6.0V
 Current mode control, pulse-by-pulse
current limit, current sharing enabled
and (N+K) redundancy compatible
shutdown mode
 SYNC function, 100 kHz–5 MHz lock
range with selectable 500 kHz /1 MHz
free running frequency
 Shutdown pin, Power Good output pin
for supply sequencing
 Better than 1% typical initial accuracy
(25°C)
 Control inputs compatible with TTL,
LVTTL, LVCMOS (2.5V and 3.3V)
and 5V CMOS
 Available in ceramic hermetic packaging
and in bare die form
Figure 2. Package Type
32-lead ceramic package
Document No. DOC-29314-8 www.e2v-us.com
©2010–2015 Peregrine Semiconductor Corp. All rights reserved.
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