ANALOG DEVICES LT1301CN8#PBF DC-DC Switching Boost Regulator, Fixed, 1.8 to 10V in, 12V Out, DIP-8

LT1301CN8#PBF is a micropower step-up DC/DC converter that operates using Burst Mode� operation. This versatile device can deliver either 5V or 12V from a two-cell battery input. It offers programmable 5V or 12V output via a logic-controlled input, with a low no-load quiescent current of 120µA. Its shutdown pin reduces supply current to just 10µA when activated. The on-chip power switch features a low 170mV saturation voltage at a switch current of 1A, representing a four-fold reduction compared to previous designs. The LT1301CN8#PBF operates with a 155KHz internal oscillator, allowing the use of extremely small surface-mount inductors and capacitors. It is guaranteed to operate at 1.8V input, enabling more energy extraction from the battery and increasing operating life. Applications include flash memory VPP generators, palmtop computers, portable instruments, bar-code scanners, personal digital assistants, and PCMCIA cards.

• Better high current efficiency than CMOS, up to 89% efficiency
• ILIM pin programs peak switch current, uses inexpensive surface mount inductors
• Quiescent current is 120µA typical at (VSHDN = 0.5V, VSEL = 5V, VSENSE = 5.5V)
• Oscillator frequency is 155KHz typical at (current limit not asserted)
• Switch on-time is 5.6µs typical at (current limit not asserted)
• Output line regulation is 0.06%/V typical at (1.8V < VIN < 6V)
• Switch leakage current is 0.1µA typical at ( VSW = 5V, switch off)
• Peak switch current is 1A typical at (ILIM floating)
• Switch saturation voltage is 130mV typical at (ISW = 700mA)
• Operating temperature range from 0°C to 70°C, 8-lead plastic DIP package

Notes

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