STR-A6131, STR-A6132, STR-A6151, STR-A6159, STR-A6153E, and STR-A6169: Flyback Switching Regulators

The Series STR-A6100 are PRC topology ICs (fixed off-time and variable on-time control) designed for a relatively low output power SMPS design of which output power is up to 20 W at universal input or 24 W at 230 VAC input. The auto-standby function reduces input power consumption to less than 50 mW at 230 VAC input by the burst-mode operation, which is stabilized by the auto-bias function to avoid a hiccup phenomenon. Current-mode feedback and leading-edge blanking stabilize the entire power supply operation. Various protections such as overvoltage, overcurrent, overload, thermal shutdown, and an avalanche-guaranteed MOSFET secure good system-level reliability.

These devices are provided in an 8-pin mini-DIP plastic package.

Max. PO (W) at Max. MOSFET Part Number
120 V ac 230 V ac 85 ~ 265 V ac VDSS (V) rDS(on) (Ω)
12 - - 500 3.95 STR-A6131
16 - - 500 2.62 STR-A6132
- 8 5 800 19.2 STR-A6169
- 13 10 650 6.0 STR-A6159
- 16 12 650 3.95 STR-A6151
- 24 20 650 1.90 STR-A6153E

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  • Features and BenefitsFeatures and Benefits
  • PackagingPackaging
  • Technical DocsTechnical Docs
  • NewsNews
  • Rugged Avalanche-Rated MOSFET
    Simplified Surge Absorption
    No VDSS Derating Required
  • Choice of rDS(on)
  • Two Operational Modes by Automatic Switching:
    PRC Mode for Normal Operation
    Burst Mode for Stand-By Operation or Light Loads
  • Built-In Leading Edge Blanking
  • Low Start-Up Current
    Start-Up Circuit Disabled in Operation
  • Low Operating Current (1.5 mA typ)
  • Automatic Burst Stand-By (intermittent operation)
    Input Power <0.1 W at No Load
  • Auto-Bias Function
    Stable Burst Operation Without Generating Interference
  • Internal Off-Timer Circuit
  • Built-In Constant-Voltage Drive
  • Multiple Protections:
    Pulse-by-Pulse Overcurrent Protection
    Overload Protection with Auto Recovery
    Latching Overvoltage Protection
    Undervoltage Lockout with Hysteresis
    Latching Thermal Shutdown
  • Molded Small-Size 8-Pin Package
    For Low-Height SMPS
    Polarized to Prevent Backwards Assembly

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Product Image Functional Block Diagram Packages

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
STR-A6131 8-lead DIP -20°C to 125°C Yes View Data New Contact your
local sales rep
Check Stock
STR-A6132 8-lead DIP -20°C to 125°C Yes View Data New Contact your
local sales rep
Check Stock
STR-A6151 8-lead DIP -20°C to 125°C Yes View Data New Contact your
local sales rep
Check Stock
STR-A6153E 8-lead DIP -20°C to 125°C Yes View Data New Contact your
local sales rep
Check Stock
STR-A6159 8-lead DIP -20°C to 125°C Yes View Data New Contact your
local sales rep
Check Stock
STR-A6169 8-lead DIP -20°C to 125°C Yes View Data New Contact your
local sales rep
Check Stock

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