MAX1682：Switched-Capacitor Voltage Doublers
SOT23 Voltage Doubler Needs Only two External Caps; Ultra-Small LCD Supply for PDAs and Cell Phones
The ultra-small MAX1682/MAX1683 monolithic, CMOS charge-pump voltage doublers accept input voltages ranging from +2.0V to +5.5V. Their high voltage-conversion efficiency (over 98%) and low operating current (110µA for MAX1682) make these devices ideal for both battery-powered and board-level voltage-doubler applications. Oscillator control circuitry and four power MOSFET switches are included on-chip. The MAX1682 operates at 12kHz, and the MAX1683 operates at 35kHz. A typical application includes generating a 6V supply to power an LCD display in a hand-held PDA. Both parts are available in a 5-pin SOT23 package and can deliver 30mA with a typical voltage drop of 600mV.
Key Features
| MAX1682, MAX1683: Typical Operating Circuit Applications/Uses
|
DataSheet
| title | Download file |
|---|---|
| MAX1682-MAX1683 Data Sheet | MAX1682-MAX1683.pdf |
Parametrics
| Part Number | Topology | VIN (V) | VIN (V) | ICC (mA) | Unadj. VOUT (V) | IOUT (A) | Oper. Freq. (kHz) | Oper. Temp. (°C) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|
| min | max | max | typ | See Notes | ||||||
| MAX1682 | Doubler Unregulated | 2 | 5.5 | 0.145 | +2xVIN | 0.045 | 12 | -40 to +85 | SOT/5 | $0.71 @1k |
| MAX1683 | 0.31 | 35 | SOT/5 | |||||||
Ordering Information
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|
| MAX1682C/D | No Longer Available | DICE SALES,;NA pin;DICE; | -40°C to +85°C | See data sheet | |
| MAX1682EUK+ | Active | SOT,;5 pin;9 mm² | -40°C to +85°C | Lead Free | |
| MAX1682EUK+T | Active | SOT,;5 pin;9 mm² | -40°C to +85°C | Lead Free | |
| MAX1682EUK-T | No Longer Available | MAX1682EUK+T | SOT,;5 pin;9 mm² | -40°C to +85°C | No |
- MAX1682-MAX1683.pdf MAX1683
- Simple Current Limiter Is Programmable MAX4376
- Negative Step-Down Converter Requires No Inductor MAX1682
- Doubler/Inverter Charge Pumps Divide by Two MAX868
- Choosing the Right Power-Supply IC for your Application MAX6774
- DC-DC Conversion Without Inductors MAX871
- Properties of the Charge-Pump Voltage Splitter MAX1697
- MAX1682-MAX1683.pdf MAX1683
