M62281P/FP
(Ta = 25°C, V
CC
= 14 V, unless otherwise noted)
Block
Output
Item
Output low voltage
Symbol
V
OL1
V
OL2
Output high voltage
V
OH1
V
OH2
Output voltage rise time
Output voltage fall time
T
RISE
T
FALL
Min.
12.0
11.5
Limits
Typ.
0.04
0.3
12.7
12.5
50
35
Max.
0.4
1.4
Unit
V
V
V
V
ns
ns
Test Conditions
V
CC
=
14 V,
I
O
=
10 mA
V
CC
=
14 V,
I
O
=
100 mA
V
CC
=
14 V,
I
O
= −10
mA
V
CC
=
14 V,
I
O
= −100
mA
No load
No load
Function Description and Application
EA IN, EA OUT Terminal
Circuit for EA OUT terminal is connected to constant current load (370
µA
Typ.) shown in figure 1. Output voltage of
error amp. is controlled by the output transistor to provide current-sense comp. with the controlled voltage.
370
µA
EA OUT
To current-sense
comp.
Figure 1 Circuit Diagram of EA OUT Terminal
1. Peripheral circuit of Error Amp
Detected voltage divided by R1 and R2 is input to EA IN terminal in such case as fly-back system where V
CC
line
voltage is proportional to output voltage, or in the case that the voltage detection is made on the primary side. In
this case operating region is set by R1 and R2, and AC gain by R1//R2, RF.
From detecting voltage
Reference voltage (2.5 V)
R1
EA IN
R2
RF
+
−
EA
OUT
Figure 2 Method to Detect The Voltage on The Primary Side
REJ03D0840-0201 Rev.2.01 Nov 14, 2007
Page 5 of 12
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