psr1-series ? psr1-78xxs ? switching regulator ? si p3 ? plastic case specification can change without a notice ? we acce pt no liability for any inaccuracy or printing erro rs. page 1/2 psr1-78xxs all specifications typical at ta=25c, nominal inpu t voltage and full load unless otherwise specified input specifications voltage range wide input (see table) filter capacitors input reflected ripple current 40ma pk-pk output specifications voltage accuracy 2% short circuit protection indefinite (automatic recovery) line regulation 0.5% load regulation (10% - 100% load) 0.6% ripple and noise (20mhz bandwidth) 60 mv pk-pk temperature coefficient 0.02% / c capacitor load 220 uf general specifications efficiency see table switching frequency 330 khz, typ. humidity 95% rel h reliability calculated mtbf (mil-hdbk-217f) > 4.3 mhrs physical specifications case material non conductive black plastic (ul94v-0 rated) potting material epoxy (ul94v-0 rated) weight ~ 2.0 g, typ. environment specifications operating temperature -40 to +60c (for 100%) maximum case temperature 100c cooling free air convection (10mm distance required) emc characteristics radiated emissions en55022 class b conducted emissions en55022 class b esd en61000-4-2 pref. criteria b rs en61000-4-3 pref. criteria a eft (an external filter capacitor is required if the mo dule has to meet en61000-4-4. (220uf/100v)) en61000-4-4 pref. criteria b cs en61000-4-6 pref. criteria a pfmf en61000-4-8 pref. criteria a mainzer stra?e 151?153 d-55299 nackenheim tel. +49 6135 7026-0 fax: +49 6135 931070 www.peak-electronics.de peak@peak-electronics.de the psr1 - s series is a family of cost effective 1.5~5w singl e output buck dc-dc converters. these converters are encapsulated in a non-conductive black plastic package 3-pin sip case, continuous sh ort circuit protection with automatic restart and good line / load regulat ion. devices are filled up with flame retardant resin .input voltages of 4.75~ 18,and 6.5~18 with output voltage of 1.5, 1.8, 2.5, 3.3, 5, vdc. high perform ance features include high efficiency operation up to 94%. standard features i nclude an input range of 4.75~18vdc tolerance and low output ripple and nois e. psr1-series 1000ma switching regulator wide input - step down sip3 plastic package non-isolated & non-regulated short circuit protection high efficiency rev.11-2010
psr1-series ? psr1-78xxs ? switching regulator ? si p3 ? plastic case specification can change without a notice ? we acce pt no liability for any inaccuracy or printing erro rs. page 2/2 selection guide order # i n p u t v o l t a g e r a n g e ( v d c ) i n p u t c u r r e n t n o l o a d ( m a ) i n p u t c u r r e n t f u l l l o a d ( v i n m i n . ) i n p u t c u r r e n t f u l l l o a d ( v i n m a x . ) o u t p u t v o l t a g e ( v ) o u t p u t c u r r e n t ( m a ) e f f i c i e n c y ( v i n m i n . ) ( % ) e f f i c i e n c y ( v i n m a x . ) ( % ) PSR1-781R5S 4.75-18 10.0 416.00 119.00 1.5 1000 78 72 psr1-781r8s 4.75-18 10.0 474.00 135.00 1.8 1000 82 76 psr1-782r5s 4.75-18 10.0 619.00 176.00 2.5 1000 87 81 psr1-783r3s 4.75-18 10.0 790.00 221.00 3.3 1000 90 85 psr1-7805s 6.5-18 10.0 836.00 319.00 5.0 1000 94 89 if you need other specifications, please enquire. package / pinning / derating peak modelcode datecode 1 2 3 11.68 (0.46) bottom view 1 2 3 10.15 (0.40) 5.08 (0.20) 2.00 (0.08) 2.54 (0.10) 4.00 (0.16) 0.25 (0.01) 7.50 (0.29) 0.50 (0.02) notes : all dimensions are typical in millimeters ( inches ). 1. pin diameter: 0.5 0.05 ( 0.020.002 ) 2. pin pitch tolerance: 0.35 ( 0.014 ) 3. case tolerance: 0.5 ( 0.02 ) specification may change without notice. pin length is typical. 85 100% 75% 50% 25% -40 -20 0 20 40 60 80 100 output power ambient temperature (c) temperature derating graph emi filter c1 / c2 = 470uf, 35v l = 6.4uh # switching reg. 1 +vin 2 gnd 3 +vout pin connections
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