VIPER37HE STMicroelectronics, VIPER37HE Datasheet - Page 4

• Manufacturer Part Number: VIPER37HE
• Description: AC/DC Switching Converters ViperPlus Fixed Freq 800V 30mQ 265 Vac
• Manufacturer: STMicroelectronics
• Type: Off Line Switcherr

Specifications of VIPER37HE

• Product Category: AC/DC Switching Converters
• Rohs: yes
• Input / Supply Voltage (max): 23.5 V
• Input / Supply Voltage (min): 8.5 V
• Switching Frequency: 115 kHz
• Supply Current: 3.5 mA
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: Through Hole
• Package / Case: SDIP-10
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 25 C
• Number Of Outputs: 1
• Output Power: 25 W

Block diagram
1
2
Table 2.
1. Typical continuous power in non-ventilated enclosed adapter measured at 50
2. Maximum practical continuous power in an open frame design at 50
4/35
Figure 2.
CONT
Part number
VIPER37
15uA
LOGIC
Block diagram
Typical power
Typical power
OVP
OVP
Block diagram
BR
V BRth
.
FB
START
SOFT
+
-
Adapter
6uA
23 W
BLOCK
OCP
Vin_OK
(1)
230 V
Ref
Ref erence Voltages
Internal Supply bus
BURST-MODE
Doc ID 022218 Rev 1
LOGIC
+
-
+
-
+
-
AC
OCP
PWM
&
Open frame
25 W
2nd OCP
LOGIC
BURST
VDD
SUPPLY
& UVLO
VDD
(2)
Vcc
UVLO
°
C ambient, with adequate heatsinking.
LEB
BURST
OLP
°
C ambient.
OSCILLATOR
TURN-ON
LOGIC
Adapter
OVP
13 W
OTP
HV_ON
(1)
R1
S
85-265 V
Istart-up
R2
SHUTDOWN
OTP
THERMAL
Q
AC
Open frame
Rsense
15 W
VIPER37
DRAIN
GND
(2)