March 2006 Revision 1 1/8
8
TS4436
Adjustable 0.6V Open Collector Shunt Voltage Reference
■ Internal 0.6V ±0.5% precision
■ Low output saturation voltage
75mV max. between SINK and GND
■ Low current consumption: 150µA
■ Low supply voltage 1.7V
■ Industrial temperature range: -40 to +85°C
■ 150ppm/°C temperature coefficient
■ Lead free available
Description
The TS4436 is a four-terminal device dedicated to
low voltage Switch Mode Power Supplies
(SMPS).
It integrates a 0.6V voltage reference, an
amplifier, and an open collector output transistor
in a single package. The TS4436’s operating
mode is similar to the well-known standard
voltage reference, the TL431. It maintains the
desired feedback voltage at the REF pin in a
closed loop configuration by sinking a current
proportional to the error voltage at the REF pin.
TS4436 features an open collector transistor with
an ultra-low saturation voltage. This feature allows
it to be used in series with the optocoupler in an
SMPS for regulation up to a 1.8V output voltage.
Applications
■ Low voltage switch mode power supplies
■ Isolated DC/DC converter
■ Computers
■ Low voltage discrete regulators
Order Codes
SC70
(Plastic Micropackage)
Pin connections (top view)
1
2
34
5
PGND
GND
REF
VSINK
CC
1
2
34
5
PGND
GND
REF
VSINK
CC
Part Number Accuracy Temperature Range Package Packing Marking
TS4436AICT 0.5%
-40, +85°C SC70 Tape & Reel
L22
TS4436ICT 1% L21
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