LT1308BIS8#PBF

LT1308BIS8#PBF is a micropower, fixed frequency step-up DC/DC converter that operates over a 1V to 10V input voltage range. This features continuous switching at light loads and operates at a quiescent current of 2.5mA. Low-battery detector accuracy is significantly tighter than the LT1308. The 200mV reference is specified at ±2% at room and ±3% over temperature. The shutdown pin enables the device when it is tied to a 1V or higher source and does not need to be tied to VIN as on the LT1308. An internal VC clamp results in improved transient response and the switch voltage rating has been increased to 36V, enabling higher output voltage applications. Typical applications are GSM/CDMA phones, digital cameras, LCD bias supplies, answer-back pagers, GPS receivers, battery backup supplies, handheld computers.

• 5V at 1A from a single Li-Ion cell
• 5V at 800mA in SEPIC mode from four NiCd cells
• Switching frequency is 600KHz typical at (VIN = 1.2V)
• Boost converter outputs up to 34V, starts into heavy loads
• Low VCESAT switch is 290mV typical at (ISW = 2A (25°C, 0°C), VIN = 1.5V)
• Pin-for-pin upgrade compatible with LT1308
• Quiescent current is 2.5mA typical (switching)
• Maximum duty cycle is 90% typical
• Operating temperature range from -40°C to 85°C
• Package style is 8-lead plastic SO

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party