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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.
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.
主要特征
- 5-Pin SOT23 Package
- +2.0V to +5.5V Input Voltage Range
- 98% Voltage-Conversion Efficiency
- 110µA Quiescent Current (MAX1682)
- Requires Only Two Capacitors
- Up to 45mA Output Current
应用/用途
- 蜂窝电话
- 手持终端
- PDA
- 小型LCD板
Parametric specs for Charge Pumps
| Topology | Doubler Unregulated |
| VIN (V) (min) | 2 |
| VIN (V) (max) | 5.5 |
| IOUT (A) (typ) | 0.045 |
| Unadj. VOUT (V) | +2xVIN |
| ICC (mA) (max) | 0.145 |
| Switching Frequency (kHz) | 12 |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | SOT23/5 |
| Budgetary Price (See Notes) | $0.75 @1k |
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参量
Parametric specs for Charge Pumps
| Topology | Doubler Unregulated |
| VIN (V) (min) | 2 |
| VIN (V) (max) | 5.5 |
| IOUT (A) (typ) | 0.045 |
| Unadj. VOUT (V) | +2xVIN |
| ICC (mA) (max) | 0.145 |
| Switching Frequency (kHz) | 12 |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | SOT23/5 |
| Budgetary Price (See Notes) | $0.75 @1k |
主要特征
- 5-Pin SOT23 Package
- +2.0V to +5.5V Input Voltage Range
- 98% Voltage-Conversion Efficiency
- 110µA Quiescent Current (MAX1682)
- Requires Only Two Capacitors
- Up to 45mA Output Current
应用/用途
- 蜂窝电话
- 手持终端
- PDA
- 小型LCD板
描述
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.
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.
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