SR086DB1 Supertex, SR086DB1 Datasheet - Page 2

• Manufacturer Part Number: SR086DB1
• Description: Power Management IC Development Tools ADJUSTABLE OFF-LINE INDUCTORLESS SWITCHING REGULATOR DEMOBOARD
• Manufacturer: Supertex
• Type: AC/DC Convertersr

Specifications of SR086DB1

• Product: Power Management Modules
• Tool Is For Evaluation Of: SR086
• Input Voltage: 90 V to 270 V
• Output Voltage: 3.3 V, 12.6 V
• Factory Pack Quantity: 1

V
Because the V
per input cycle, this output will have a certain amount of
100/120Hz ripple, depending upon the load. The SR086
regulates the peak output voltage, not the average, thus the
average voltage will decrease under load.
V
section on page 3. A source-only external voltage may be
applied to this output.
Do not connect earth-grounded loads or instruments!
V
V
which in turn is supplied by V
effectively a load on V
room to operate. Being a linear regulator, the SR086 will dis-
sipate power as I
Do not connect earth-grounded loads or instruments!
Schematic
90 to 270VAC
OUT
REG
OUT
REG
50/60Hz
is the output of a linear regulator internal to the SR086,
is adjustable from 9.0 to 50V. See the modifications
-
-
The regulated output, 3.3V nominal output voltage.
The main output. No-load output voltage is 12.6V.
V
IN
Supertex inc.
OUT
REG
V
IN
storage capacitor (C3) recharges twice
1.25A
is increased, up to 560mW at 60mA.
F
275V
OUT
1
50A
Z
. V
1
REG
OUT
requires at least 4V of head-
EN
. Thus any load on V
●
1235 Bordeaux Drive, Sunnyvale, CA 94089
20kΩ
R
7
D
1.0kV, 1.0A
1
R
200kΩ
R
200kΩ
1
2
2
EN
VIN
REG
1
R
510kΩ
R
510kΩ
3
4
is
2
STGD5NB120SZ
Enable -
high (>0.75 • V
V
disabled, V
output.
The input has 20kΩ pull-down. If unused, Enable should be
left unconnected or connected to ground.
GATE
SR086
REG
GND
IC1
8
. However, if an external voltage is applied to V
R
0Ω
Q
not installed
8
1
3
VGD
100nF
●
A logic low (<0.2V) enables Q
REG
C
5
7
C
Tel: [phone]
1
REG
will continue to function and provide a 3.3V
VREG
VOUT
) disables Q
FB
6
optional EMI
supressor
5
4
C
1.0µF
2
●
1
, shutting down V
C
100nF
www.supertex.com
4
V
3.3VDC
REG
C
470µF
3
1
SR086DB1
switching. A logic
R
12.4kΩ
R
113kΩ
5
6
OUT
GND
do not
connect to
earth
ground!
V
12.6VDC
OUT
and thus
OUT
when