MAX1705EEE+T
ActiveCONV DC-DC 0.7V TO 5.5V SYNCHRONOUS STEP UP SINGLE-OUT 2.5V TO 5.5V 0.85A 16-PIN QSOP T/R
MAX1705EEE+T
ActiveCONV DC-DC 0.7V TO 5.5V SYNCHRONOUS STEP UP SINGLE-OUT 2.5V TO 5.5V 0.85A 16-PIN QSOP T/R
Description
General part information
MAX1705 Series
The MAX1705/MAX1706 are high-efficiency, low-noise, step-up DC-DC converters with an auxiliary linear-regulator output. These devices are intended for use in battery-powered wireless applications. They use a synchronous rectifier pulse-width-modulation (PWM) boost topology to generate 2.5V to 5.5V outputs from battery inputs, such as 1 to 3 NiCd/NiMH cells or 1 Li-Ion cell. The MAX1705 has an internal 1A n-channel MOSFET switch. The MAX1706 has a 0.5A switch. Both devices also have a built-in low-dropout linear regulator that delivers up to 200mA.With an internal synchronous rectifier, the MAX1705/MAX1706 deliver 5% better efficiency than similar non-synchronous converters. They also feature a pulse-frequency-modulation (PFM) standby mode to improve efficiency at light loads, and a 1µA shutdown mode. An efficiency-enhancing track mode reduces the step-up DC-DC converter output to 300mV above the linear-regulator output.Both devices come in a 16-pin QSOP package, which occupies the same space as an 8-pin SO. Other features include two shutdown-control inputs for push-on/push-off control, and an uncommitted comparator for use as a voltage monitor.ApplicationsDigital Cordless PhonesHandheld Instruments (PDAs, Palmtops)Palmtop ComputersPCS PhonesPersonal CommunicatorsTwo-Way PagingWireless Handsets
Technical Specifications
Parameters and characteristics for this part
| Specification | MAX1705EEE+T |
|---|---|
| Current - Output | 1 A |
| Frequency - Switching (Max) | 340 kHz |
| Frequency - Switching (Min) | 260 kHz |
| Function | Step-Up |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature (Max) | 85 °C |
| Operating Temperature (Min) | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package Length | 0.154 in |
| Package Name | 16-QSOP, 16-SSOP |
| Package Width | 3.9 mm |
| Synchronous Rectifier | No |
| Topology | Boost |
| Voltage - Input (Max) | 5.5 V |
| Voltage - Input (Min) | 0.9 V |
| Voltage - Output (Max) | 5.5 V |
| Voltage - Output (Min/Fixed) | 2.5 V |
Pricing
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CAD
3D models and CAD resources for this part
