AS998 |
RFQ for AS998 Required Field |
 |
| Product | Manufacturers | Pack | D/C |
| AS998 | - | N/A | N/A |
The AS998/AS998A is an IC intended for use as a PWM controller for switch mode power supplies. The device is particularly suited as a primary side controller for adapter, printer, peripheral, mobile chargers and desktop auxiliary power supplies. The AS998/AS998A is manufactured in BICMOS technology and exhibits very low start-up and operating power. This allows the device to be suitable in applications where stringent standby or Blue Angel criteria are required.
Many of the external functions associated with PWM controllers have been integrated into the AS998/AS998A allowing the external component count to be significantly reduced. Features such as fixed internal oscillator, internal ramp compensation and current filters all reduce the external support components.
The AS998/AS998A has a typical output rise and fall time of 250/210 ns.
Features |
| • Low start-up current 64 A (Typ)• Low running current 2 mA (Typ)• Low power light load mode• Low power standby when OV is activated • Extended commercial operating temperature range: 0 to 105°C• On-board fixed frequency oscillator 100 kHz (Typ)• Frequency randomizer to reduce EMC emissions• Dedicated OV shutdown pin• On-board voltage ramp compensation• On-board current sensing filtering• Optional primary side regulation |
| Rating |
Symbol |
Rating |
Unit |
| Supply Voltage (Low Impedance Source) |
VDD |
13 |
V |
| Supply Voltage (High Impedance Source) |
IDD |
45 |
mA |
| Output Peak Current |
IOUT |
600 |
mA |
| Regulator Current |
IREG |
10 |
mA |
| Continuous Power at 25 8L SOIC 8L PDIP |
PD |
750 1000 |
mW mW |
| Junction Temperature |
TJ |
150 |
|
| Storage Temperature |
TSTG |
-65 to 150 |
|
| Lead Temperature, Soldering 10 Seconds |
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