ADM660ARZ
DC-DC Converter
- Converter Type: step-up, switched capacitor, doubler, inverting
- Input voltage range, V: 1.5 … 7
- Output voltage range, V: -vin, 2 x vin
- Maximum output current, A: 0.1
- Operating frequency, kHz: -25 … + 85
- Case Type: so8
DC-DC Converter 1.5-7V 100mA, (-40 … + 85) [SO-8]
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Description
The ADM660ARZ is a CMOS switched-capacitor Voltage Converter that can be used to either invert the input supply voltage giving VOUT = -VIN or double it giving VOUT = 2VIN. This inverting scheme is ideal for generating a negative rail in single power supply systems. Only two small external capacitors are needed for the charge pump. Output currents up to 50mA with greater than 90% efficiency are achievable, while 100mA achieves greater than 80% efficiency. A frequency control (FC) input pin is used to select either 25 or 120kHz charge-pump operation. This is used to optimize capacitor size and quiescent current. With 25kHz selected, a 10µF external capacitor is suitable, while with 120kHz the capacitor may be reduced to 2.2µF.
- Inverts or doubles input supply voltage
- 2.2µF or 10µF Capacitors
- 0.3V Drop at 30mA load
- Low power CMOS (600µA quiescent current)
- Selectable charge pump frequency (25 / 120kHz)
| Nom. number | 17321 |
| Production | Analog Devices |
| Converter Type | step-up, switched capacitor, doubler, inverting |
| Input voltage range, V | 1.5 … 7 |
| Output voltage range, V | -vin, 2 x vin |
| Maximum output current, A | 0.1 |
| Operating frequency, kHz | 120 |
| Case Type | so8 |
| Weight, g | 0.15 |
| Manufacturer | Analog Devices |