SMP402 Power Integrations Inc., SMP402 Datasheet - Page 10

• Manufacturer Part Number: SMP402
• Description: 20-72 VDC Input Non-isolated DC Output
• Manufacturer: Power Integrations Inc.

NOTES:
1. At low output currents (< 20 mA), the part may operate in blocking oscillation mode, resulting in large output ripple.
2. Applying >3.5 V to the EA IN pin activates an internal test circuit that turns on the output switch continuously.
Figure 7. Switching Time Test Circuit.
10
OFF-State
Current
Breakdown
Voltage
HV Regulator
Voltage
Off-line Supply
Current
V
Voltage
V
Current
OUTPUT (cont.)
SUPPLY
Destruction of the part can occur if the output of the SMP402 is connected to a high voltage power source when the
test circuit is activated.
BIAS
BIAS
SMP402
Parameter
48 VDC
D
1/96
Supply
Supply
1.2 M
100 nF
1.2 M
Symbol
R1
BV
V
I
I
V
BIAS
DSS
I
BIAS
IN
IN
DSS
V
R
V
C1
IN
IN
S+
R
(Unless Otherwise Specified)
= 48 V, V
, R
20.5 k
= 72 V, OUT = 0 V, T
EXT
I
OUT
S-
= 20.5 k , C
1
2
3
4
5
6
7
8
= 1.2 M , T
= -250 A, T
Conditions
V
BIAS
U1
V
BIAS
BIAS
= A GND
= 5 V, GNDs = 0 V
120 pF
16
15
14
13
12
11
10
= 5 V
9
EXT
j
= 0 to 120 C
A
= 25 C
= 120 pF
A
= 120 C
1 nF
UF4002
470 H
100 nF
240 k
75 k
Min
4.75
-50
90
12
24.9 k
82 F
Typ
-10
1.5
1
1
100 nF
Max
5.25
2.5
1.5
1.5
72
152
PI-1456-042695
Units
mA
mA
V
V
V
A