VIPER22AS-E STMicroelectronics, VIPER22AS-E Datasheet - Page 6

• Manufacturer Part Number: VIPER22AS-E
• Description: IC OFFLINE SWIT PWM SMPS 8SOIC
• Manufacturer: STMicroelectronics
• Series: VIPER™r

Specifications of VIPER22AS-E

• Output Isolation: Isolated
• Frequency Range: 54 ~ 66kHz
• Voltage - Input: 8 ~ 50 V
• Voltage - Output: 730V
• Power (watts): 7W
• Operating Temperature: 25°C ~ 125°C
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Output Power: 12 W, 7 W
• Input Voltage: 9 V to 38 V
• Switching Frequency: 60 KHz
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Output Voltage: 730V
• No. Of Outputs: 1
• Power Dissipation Pd: 7W
• Supply Voltage Range: 9V To 38V
• No. Of Pins: 8
• For Use With: 497-9049 - BOARD EVAL BASED VIPER22ASTR-E497-8215 - BOARD EVAL BASED ON VIPER22A497-5864 - EVAL BOARD DUAL OUTPUT VIPER22A497-5071 - EVAL BOARD DIMMABLE HB PWR LEDVIPER22-LED-EV - VIPER LED POWER SUPPLY
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6800-5; VIPER22AS-E

Pin connections and function
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Pin connections and function
Figure 2.
Figure 3.
Table 10.
Pin Name
SOURCE
DRAIN
SOURCE
SOURCE
V
FB
DD
VDD
FB
Pin connection
Current and voltage conventions
Pin function
1
2
3
4
Power supply of the control circuits. Also provides a charging current during start up
thanks to a high voltage current source connected to the drain. For this purpose, an
hysteresis comparator monitors the V
- V
off the start up current source.
- V
the start up current source.
Power MOSFET source and circuit ground reference.
Power MOSFET drain. Also used by the internal high voltage current source during
start up phase for charging the external V
Feedback input. The useful voltage range extends from 0 V to 1 V, and defines the
peak drain MOSFET current. The current limitation, which corresponds to the
maximum drain current, is obtained for a FB pin shorted to the SOURCE pin.
DDon
DDoff
SO-8
: Voltage value (typically 14.5 V) at which the device starts switching and turns
: Voltage value (typically 8 V) at which the device stops switching and turns on
V
DD
I
DD
V
8
7
6
5
FB
Doc ID 12050 Rev 2
I
DRAIN
DRAIN
DRAIN
DRAIN
FB
VIPer22A
FB
VDD
CONTROL
Pin function
VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E
DD
voltage and provides two thresholds:
DD
SOURCE
DRAIN
capacitor.
SOURCE
SOURCE
VDD
FB
I
D
1
2
3
4
V
D
DIP-8
8
7
6
5
DRAIN
DRAIN
DRAIN
DRAIN