The TL284x and TL384x series of
control integrated circuits provide the features that are necessary to implement
off-line or DC-to-DC fixed-frequency current-mode control schemes, with a minimum
number of external components. Some of the internally implemented circuits are an
undervoltage lockout (UVLO), featuring a start-up current of less than 1mA, and a
precision reference trimmed for accuracy at the error amplifier input. Other
internal circuits include logic to ensure latched operation, a pulse-width
modulation (PWM) comparator (that also provides current-limit control), and a
totem-pole output stage designed to source or sink high-peak current. The output
stage, suitable for driving N-channel MOSFETs, is low when it is in the off
state.
Package Information
| PART NUMBER |
PACKAGE(1) |
PACKAGE SIZE(2) |
| TLx84x |
D (SOIC, 8) |
4.90mm × 6.00mm |
| D (SOIC, 14) |
8.65mm × 6.00mm |
| P (PDIP, 8) |
9.81mm × 9.43mm |
(1) For all available packages, see the orderable addendum at the
end of the data sheet.
(2) The package size (length × width) is a nominal value and
includes pins, where applicable.
D Package14-Pin SOICTop View
D or P
Package8-Pin SOIC or PDIPTop View
