MAX8715 Datasheet | Maxim Integrated

19-1563; Rev 3; 9/05 KIT ATION EVALU LE B A IL A AV .. Low-Noise Step-Up DC-DC Converters General Description Features - 90% Efficiency - Adjustable Output from VIN to 12V - 1.6A, 0.21Ω, 14V Power MOSFET (MAX1790) - 2.4A, 0.15Ω, 14V Power MOSFET (MAX8715) - +2.6V to +5.5V Input Range - Pin-Selectable 640k Hz or 1.2MHz Switching Frequency - 0.1µA Shutdown Current - Programmable Soft-Start - Small 8-Pin µMAX Package MAX1790/MAX8715 The MAX1790/MAX8715 boost converters incorporate high-performance (at 1.2MHz), current-mode, fixed-frequency, pulse-width modulation (PWM) circuitry with a built-in 0.21Ω/0.15Ω n-channel MOSFET to provide a highly efficient regulator with fast response. High switching frequency (640k Hz or 1.2MHz selectable) allows easy filtering and faster loop performance. An external pensation pin provides the user flexibility in determining loop dynamics, allowing the use of small, low equivalent-series-resistance (ESR) ceramic output capacitors. The device can produce an output voltage as high as 12V from an input as low as 2.6V. Soft-start is programmed with an external capacitor, which sets the input-current ramp rate. In shutdown mode, current consumption is reduced to 0.1µA. The MAX1790/ MAX8715 are available in a space-saving 8-pin µMAX® package. The ultra-small package and high switching frequency allow the total solution to be less than 1.1mm high. µMAX is a registered trademark of Maxim Integrated Products, Inc. Ordering Information PART MAX1790EUA MAX1790EUA+ MAX8715EUA MAX8715EUA+ TEMP RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C PIN-PACKAGE 8 µMAX 8 µMAX 8 µMAX 8 µMAX Applications LCD Displays PCMCIA Cards Portable Applications Hand-Held Devices + Denotes lead-free package. Typical Operating Circuit VIN 2.6V TO 5V Pin Configuration TOP VIEW IN ON/OFF SHDN 1 2 3 8...