Specifications
MAX1708EEE+T is a high-power integrated boost DC-DC switching regulator from Analog Devices (Maxim Integrated). The suffix +T represents tape-and-reel surface-mount packaging for automated mass SMT assembly. It integrates a high-current power MOSFET inside a compact 16-QSOP package, supporting ultra-low input voltage battery boost conversion up to 10W output power, widely adopted for portable battery-powered industrial and consumer embedded equipmentAnalog Devices.
👉 It differs from lower-power boost regulators with small internal switches and MAX1709 higher-current variants. This device features 5A internal power switch, 0.7V minimum input threshold, dual logic enable pins and programmable soft-start, ideal for single-cell lithium, alkaline and low-voltage battery systems requiring stable high-current 3.3V/5V power rails.
Key Features
- Wide Input & Flexible Output Specifications
- Input voltage range: 0.7 V ~ 5 V, compatible with single Li-ion, NiMH, alkaline dry cell stacks
- Output options: Fixed 3.3 V / 5 V, or adjustable 2.5 V to 5.5 V via external resistors
- Max output power: 10 W; delivers 2 A continuous 5 V output under 3.3 V input
- On-chip integrated 5 A RMS power MOSFET, eliminates external discrete power switch
- Low Power Consumption for Battery Devices
- Typical quiescent operating power: < 1 mW
- Shutdown mode supply current as low as 1 µA to minimize standby battery drain
- Optimized light-load efficiency to extend portable device runtime
- Fixed Synchronizable PWM Switching Architecture
- Default fixed 600 kHz switching frequency for predictable EMI filtering design
- External clock synchronization range: 350 kHz ~ 1000 kHz to avoid RF/MCU frequency interference
- Constant-frequency PWM topology concentrates switching noise within narrow spectrum for simple LC filtering
- Multi-Function System Protection & Control
- Dual enable logic pins (ONA, active-low /ONB): support single momentary pushbutton power toggle and standard logic on/off control
- Programmable soft-start circuit to suppress inrush current during power-up, protecting batteries and input capacitors
- Adjustable cycle-by-cycle current limiting prevents overload damage under short-circuit conditions
- Built-in thermal shutdown protection against overheating
- Package & Environmental Ratings
- Package: 16-pin narrow QSOP (3.9 mm width), compact footprint for dense portable PCB layout
- Operating temperature range: -40 °C ~ +85 °C commercial industrial grade
- MSL 1 unlimited floor life, no dry-bag storage required
- Tape-and-reel (+T) bulk packaging, fully RoHS lead-free compliant, halogen-free
Typical Applications
Handheld industrial test & measurement instruments single-cell boost power supply
Portable data loggers, wireless environmental monitoring sensor battery power rails
Bluetooth/Wi-Fi IoT modules low-voltage battery boost converters
Portable medical monitoring devices 3.3V/5V system power circuits
RF power amplifier boost supply for handheld communication terminals
Small embedded HMI, touch panel low-battery backup power modules
Consumer wearable devices, fitness tracker multi-voltage power conversion
Low-power single-board computer auxiliary boost power supply
Smart handheld barcode scanners, access control portable equipment
Miniature LED lighting, portable charging auxiliary boost circuits
LXB Semicon supplies original Analog Devices MAX1708EEE+T integrated high-current boost DC-DC regulator IC
