Product Details
High efficiency (95% at 2A; greater than 80% at loads from 5mA to 3A) is achieved through synchronous rectification and PWM operation at heavy loads, and Idle Mode™ operation at light loads. The MAX786 uses physically small components, thanks to high operating frequencies (300kHz/200kHz) and a new current-mode PWM architecture that allows for output filter capacitors as small as 30µF per ampere of load. Line- and load-transient responses are terrific, with a high 60kHz unity-gain crossover frequency allowing output transients to be corrected within four or five clock cycles. Low system cost is achieved through a high level of integration and the use of low-cost, external N-channel MOSFETs.
Other features include low-noise, fixed-frequency PWM operation at moderate to heavy loads, and a synchronizable oscillator for noise-sensitive applications such as electromagnetic pen-based systems and communicating computers. The MAX786 is a monolithic, BiCMOS IC available in fine-pitch, surface-mount SSOP packages.
Key Features
- Dual PWM Buck Controllers (+3.3V and +5V)
- Two Precision Comparators or Level Translators
- 95% Efficiency
- 420µA Quiescent Current, 70µA in Standby (linear regulators alive)
- 25µA Shutdown Current (+5V linear alive)
- 5.5V to 30V Input Range
- Small SSOP Package
- Fixed Output Voltages:
- 3.3V (standard)
- 3.45V (High-Speed Pentium®)
- 3.6V (PowerPC®)
Applications/Uses
- Communication Systems
- Notebook Computers
- Pen-Entry Systems
- Portable Data Terminals
VIN (V) (min) | 5.5 |
VIN (V) (max) | 30 |
VOUT1 (V) (min) | 3.3 |
VOUT1 (V) (max) | 5 |
IOUT1 (A) (max) | 5 |
Switch Type | External |
Preset VOUT (V) | 5 |
Output Adjust. Method | Preset Resistor |
Synchronous Switching? | Yes |
# DC-DC Outputs | 2 |
Switching Frequency (kHz) | 300 |
Package/Pins | SSOP/28 |
Budgetary Price (See Notes) | $5.84 @1k |
Technical Docs
Data Sheet | Dual-Output Power Supply Controller for Notebook Computers | Jan 01, 1999 |
Click any title below to view the detail page where available.
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal
Parameters
VIN (V) (min) | 5.5 |
VIN (V) (max) | 30 |
VOUT1 (V) (min) | 3.3 |
VOUT1 (V) (max) | 5 |
IOUT1 (A) (max) | 5 |
Switch Type | External |
Preset VOUT (V) | 5 |
Output Adjust. Method | Preset Resistor |
Synchronous Switching? | Yes |
# DC-DC Outputs | 2 |
Switching Frequency (kHz) | 300 |
Package/Pins | SSOP/28 |
Budgetary Price (See Notes) | $5.84 @1k |
Key Features
- Dual PWM Buck Controllers (+3.3V and +5V)
- Two Precision Comparators or Level Translators
- 95% Efficiency
- 420µA Quiescent Current, 70µA in Standby (linear regulators alive)
- 25µA Shutdown Current (+5V linear alive)
- 5.5V to 30V Input Range
- Small SSOP Package
- Fixed Output Voltages:
- 3.3V (standard)
- 3.45V (High-Speed Pentium®)
- 3.6V (PowerPC®)
Applications/Uses
- Communication Systems
- Notebook Computers
- Pen-Entry Systems
- Portable Data Terminals
Description
High efficiency (95% at 2A; greater than 80% at loads from 5mA to 3A) is achieved through synchronous rectification and PWM operation at heavy loads, and Idle Mode™ operation at light loads. The MAX786 uses physically small components, thanks to high operating frequencies (300kHz/200kHz) and a new current-mode PWM architecture that allows for output filter capacitors as small as 30µF per ampere of load. Line- and load-transient responses are terrific, with a high 60kHz unity-gain crossover frequency allowing output transients to be corrected within four or five clock cycles. Low system cost is achieved through a high level of integration and the use of low-cost, external N-channel MOSFETs.
Other features include low-noise, fixed-frequency PWM operation at moderate to heavy loads, and a synchronizable oscillator for noise-sensitive applications such as electromagnetic pen-based systems and communicating computers. The MAX786 is a monolithic, BiCMOS IC available in fine-pitch, surface-mount SSOP packages.
Technical Docs
Data Sheet | Dual-Output Power Supply Controller for Notebook Computers | Jan 01, 1999 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal