MAX853 low-noise, inverting, chargepump power supplies are ideal for biasing GaAsFETs in cellular telephone transmitter amplifiers.
MAX852 offer both preset (-4.1V) and adjustable (-0.5V to -9.0V) output voltages.
Key Features
o Fixed -4.1V or Adjustable -0.5V to -9V Output at 5mA o 4.5V to 10V Input Voltage Range o 2mVp-p Output Voltage Ripple (MAX850.
MAX852) 1mVp-p Output Voltage Ripple (MAX853) o 100kHz Charge-Pump Switching Frequency (MAX850/MAX851/MAX853) o External Synchronizing Clock Input (MAX852) o Logic-Level Shutdown Mode: 1µA Max Over Temperature (MAX850/MAX852/MAX853) o Low Cost, 8-Pin SO Package
MAX850.
MAX853
______________Ordering Information ________________________.
Full PDF Text Transcription for MAX851 (Reference)
Note: Below is a high-fidelity text extraction (approx. 800 characters) for
MAX851. For precise diagrams, and layout, please refer to the original PDF.
19-0238; Rev 2; 4/96 Low-Noise, Regulated, Negative Charge-Pump Power Supplies for GaAsFET Bias _______________General Description The MAX850–MAX853 low-noise, inverting,...
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___________General Description The MAX850–MAX853 low-noise, inverting, chargepump power supplies are ideal for biasing GaAsFETs in cellular telephone transmitter amplifiers. The MAX850–MAX852 offer both preset (-4.1V) and adjustable (-0.5V to -9.0V) output voltages. The MAX853 uses an external positive control voltage to set the negative output voltage. Input voltage range for all four devices is 4.5V to 10V. Output current is 5mA. An internal linear regulator reduces the output voltage ripple to 2mVp-p. With a well-filtered control voltage (VCTRL), the MAX853 achieves typical output ripple of less than 1mVp-p.
MAX851 Datasheet
