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STMicroelectronics ALTAIR04-900

Off-line all-primary-sensing switching regulator

Overview

TopologyOther Topology
IC revision3

Description

ALTAIR04-900 is a high-voltage all-primary-sensing switcher intended for operating directly from the rectified mains with minimum external parts. It combines a high-performance low-voltage PWM controller chip and a 900 V avalanche-rugged power section in the same package.

Features

  • Primary side constant voltage operations with no optocoupler
  • Adjustable and main-independent maximum output current for safe operations during overload/short circuit conditions
  • 900 V avalanche rugged internal power section
  • Quasi-resonant valley switching operation
  • Low standby consumption
  • Overcurrent protection against transformer saturation and secondary diode short circuit
  • SO16 package

Typical applications

  • SMPS for energy metering
  • AC-DC adapters
  • Auxiliary power supplies for 3-phase input industrial systems

Products

Order Code Data­sheet Downloads Product seriesVinVOut1
(V)
IOut1
(A)
VOut2
(V)
IOut2
(A)
Vaux
(V)
fswitch
(kHz)
L1
(mH)
NPRI : NSEC : NAUXL
(mm)
W
(mm)
H
(mm)
MountIR 1
(A)
L1
(mH)
RDC1 max.
(Ω)
VR
(V (AC))
VT
(V (AC))
Samples
760871431
STE LTS IGS WRLMID-OLSTM Offline Flyback Transformers for STMicroelectronics 88 - 265 V (AC) 4.5 0.15 13 0.42 12 55 2 27.67:1:3.17:1.22 18 16.5 18 THT 4500
7446121010
STE ALT EAG CAD LTS PSP IGS CAD SPAWE-LF Common Mode Power Line Choke 18.5 13.5 20.5 THT 0.7 10 0.55 250 1500
Order Code Data­sheet
760871431
7446121010
Samples
Order Code Data­sheet Downloads Product seriesVinVOut1
(V)
IOut1
(A)
VOut2
(V)
IOut2
(A)
Vaux
(V)
fswitch
(kHz)
L1
(mH)
NPRI : NSEC : NAUXL
(mm)
W
(mm)
H
(mm)
MountIR 1
(A)
L1
(mH)
RDC1 max.
(Ω)
VR
(V (AC))
VT
(V (AC))
Samples