Switching Converters, Regulators & Controllers SMPS Controller
KA7553A: Switching Converters, Regulators & Controllers SMPS Controller
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| Operating Temperature Range : | - 25 C to + 85 C | Mounting Style : | Through Hole | ||
| Package / Case : | DIP-8 | Packaging : | Tube |
• Built-in drive circuits for direct connection power MOSFET (lO = ±1.5A)
• Wide operating frequency range (5kHz ~ 600kHz)
• Pulse by pulse over current limiting
• Over load protection
• On/off control by external trigger
• Internal UVLO
• Low standby current (typ. 90uA)
• Soft start circuit
|
Parameter |
Symbol |
Value |
Unit |
| Supply Voltage |
VCC |
30 |
V |
| Output current |
IO |
±1.5 |
A |
| Input voltage at overcurrent detection pin |
VIN(IS) |
-0.3 to 4 |
V |
| Input voltage at FB pin |
VIN(FB)) |
4 |
V |
| Input current at CS pin |
IIN(CS) |
2 |
mA |
| Total power dissipation (Ta = 25°C) |
PD |
800 |
mW |
| Operating temperature |
TOPR |
-25 to 85 |
°C |
| Storage Temperature Range |
TSTG |
-65 ~ + 150 |
°C |
| Junction temperature |
Tj |
+125 |
°C |
| Product | Product status | Eco Status | Pricing* | Package type | Leads | Packing method | Package Drawing |
|---|---|---|---|---|---|---|---|
| KA7553A | Full Production | RoHS Compliant | $0.473 | DIP | 8 | RAIL |
| * Fairchild 1,000 piece Budgetary Pricing |
| ** A sample button will appear if the part is available through Fairchild's on-line samples program. If there is no sample button, please contact a Fairchild distributor to obtain samples |
The KA7552A/KA7553A are switching power control IC for wide operating frequency range. The internal circuits include pulse by pulse current limiting, protection, on/off control by external trigger, low standby current, soft start, and high current totempole output for driving a POWER MOSFET. Maximum duty of the KA7552A is 70% and the KA7553A is 46%. When duty is maximum, the input threshold voltage of pin2 & pin8 are not same in KA7552A and KA7553A.
| Technical/Catalog Information | KA7553A |
| Vendor | Fairchild Semiconductor |
| Category | Integrated Circuits (ICs) |
| PWM Type | Voltage Mode |
| Number of Outputs | 1 |
| Package / Case | 8-DIP |
| Packaging | Tube |
| Duty Cycle | 46% |
| Voltage - Supply | 10 V ~ 30 V |
| Frequency-Max | 600kHz |
| Buck | No |
| Boost | No |
| Flyback | No |
| Inverting | No |
| Doubler | No |
| Divider | No |
| Cuk | No |
| Isolated | No |
| Drawing Number | * |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
| Other Names | KA7553A KA7553A |