West Florida Components - LM2621MM 1A Surface Mount Voltage Regulator IC National Semiconductor®

Description

Low Input Voltage Regulators
Step-Up DC-DC Converter

Features:
- Up to 2 MHz Switching Frequency
- 1.2V to 14V Input Voltage
- 1.24V - 14V Adjustable Output Voltage
- Up to 1A Load Current
- 0.17 ohm Internal MOSFET
- Up to 90% Regulator Efficiency
- 80 uA Typical Operating Current
- <2.5uA Guaranteed Supply Current In Shutdown

Typical Electrical Characteristics (TJ=25°C, VDD=VOUT=3.3V unless otherwise noted):
Minimum Start-Up Supply Voltage (ILOAD=0mA): 1.1V
Minimum Operating Supply Voltage (once started , ILOAD=0mA): 0.65V
FB Pin Voltage: 1.24V
Maximum Output Voltage: 14V
Hysteresis Voltage: 30mV
Efficiency (VIN = 3.6V; VOUT = 5V; ILOAD = 500mA): 87%
Switch Duty Cycle: 70%
Operating Quiescent Current (FB Pin > 1.3V; EN Pin at VDD): 80uA
Shutdown Quiescent Current (VDD, BOOT and SW Pins at 5.0V; EN Pin <200mV): 0.01uA
Switch Peak Current Limit: 2.85A
MOSFET Switch On Resistance: 0.17 ohm

Applications:
- PDAs, Cellular Phones
- 2-Cell and 3-Cell Battery-Operated Equipment
- PCMCIA Cards, Memory Cards
- Flash Memory Programming
- TFT/LCD Applications
- GPS Devices
- Two-Way Pagers
- Hand-Held Instruments

Manufactured by: National Semiconductor
Part Number: LM2621MM

Full Datasheet: LM2621MM

Our Price: $1.25

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