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Dropout Regulators-
Allegro A8205/A8405/A82xx Series
Allegro's next-generation LDRs optimized provide extremely dropout voltages, quiescent current noise. Designed specifically meet requirements extended operation battery-powered equipment such cordless cellular phones, A8205SLH, A82xxSLH Protected A8405SLH series Dropout Regulators offer designers choices when power-supply optimization crucial. Allegro's series LDRs supplied thermally enhanced SOT23-5 type packages with standard pin-outs.
Series
A8205SLH A8405SLH A82xxSLH
Quiescent Current
Dropout Voltage
Output Noise
Output Voltages
fixed adj. fixed adj.
Sleep Current
Current
A8405 Functional Block Diagram
ADJUST (SUFFIX "-ADJ" ONLY)
BIAS
DRIVE
OVERCURRENT PROTECT.
ERROR AMP.
BYPASS (FIXED REG'S)
ENABLE
THERMAL PROTECT.
ENABLE
BANDGAP REF.
call 1-508-Allegro visit site, www.allegromicro.com
Power-Control Switches-
Allegro A2525/A2535 Single-Channel A2526/A2536 Dual-Channel Switches
Allegro's A25xx series integrated high-side power switches, optimized self-powered bus-powered Universal Serial applications. Using minimum external components, Allegro's A25xx series switches satisfy requirements. Each switch supplies required peripheral devices. A25xx supplied 8-lead SOIC 8-pin mini-DIP packages.
Load Current Port Max. Resistance
Input Voltage Device
A2525 A2535 A2526 A2536
ShortCircuit Current
1.25
On-State Supply Current
Off-State Supply Current
UnderVoltage Lockout
SoftStart Turn
Channels
Single Single Dual Dual
Enable
High High
Individual Open-Drain Fault Flags
A2526 Functional Block Diagram
A2536 ONLY CHARGE PUMP
GAIN CONTROL
CURRENT LIMIT
UVLO
REF.
A2536 ONLY
CHARGE PUMP
CURRENT LIMIT
OUTB FLGB
Dedicated total quality, Allegro facilities 9000 9001/9002 registered.
GAIN CONTROL
Allegro Power-Management products ideally suited Cellular Phones, Laptop Computers, Pagers, Palm Computers, SelfPowered Bus-Powered Hubs, Code Scanners. just name few!
Allegro MicroSystems, Inc. specializes design manufacture advanced mixed-signal (analog digital) integrated circuits, power ICs, motor-driver ICs, Hall-effect sensors, power-management circuits. With over employees worldwide, Allegro headquartered Worcester, Massachusetts, operates multiple wafer-fabrication plants USA, HallEffect Sensor Design Development Concord, Hampshire, assembly/test operation Philippines. Dedicated total quality, Allegro facilities 9000 9001/9002 registered. Applications engineering support offered extensive international customer base through offices Europe, Japan, USA.
invite visit site www.allegromicro.com
Sanken Company
Northeast Cutoff, 15036 Worcester, Massachusetts 01615 (508) 853-5000 FAX: (508) 853-7861 www.allegromicro.com
AMS-147

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