PE99151_14 Datasheet, PDF (1/15 Pages) Peregrine Semiconductor – Radiation Hardened UltraCMOS Monolithic Point-of-Load Synchronous Buck Regulator with Integrated Switches

Product Description
The PE99151 is a radiation hardened point-of-load buck
regulator delivering high efficiency at V_IN = 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
100 Krad(Si)
SEL
> 90 MeV•cm²/mg
SEB
> 90 MeV•cm²/mg
SET
> 90 MeV•cm²/mg
SEFI
> 90 MeV•cm²/mg
SEGR
> 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 DIE
Hi-Rel 2A DC-DC Converter
Radiation Hardened UltraCMOS^®
Monolithic Point-of-Load Synchronous
Buck Regulator with Integrated Switches
Features
 Up to 2A continuous
 Output voltage range from 1.0V to
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
Document No. DOC-50370-3 │ www.psemi.com
©2012-2014 Peregrine Semiconductor Corp. All rights reserved.
Page 1 of 15