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Switching Regulator - Switching Regulators 
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MAX17112
High-Performance, Step-Up, DC-DC Converter
High-Efficiency Boost Converter Provides Overvoltage Protection Up to 24V
MyMaxim SubscriptionsProduct Details
Key Features
Applications/Uses
Parametric specs for Step-Up Switching Regulators
| VIN (V) (min) | 2.6 |
| VIN (V) (max) | 5.5 |
| VOUT1 (V) (min) | 2.6 |
| VOUT1 (V) (max) | 20 |
| IOUT1 (A) (max) | 0.6 |
| Switch Type | Internal |
| Output Adjust. Method | Resistor |
| IQ (mA) (typ) | 0.3 |
| Shutdown Mode Supply Current (µA) (typ) | 160 |
| Shutdown Mode Supply Current (µA) (max) | 250 |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 1000 |
| Package/Pins | TDFN/10 |
| Budgetary Price (See Notes) | 1.14 |
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Simplified Block Diagram
Technical Docs
| Data Sheet | High-Performance, Step-Up, DC-DC Converter | Feb 20, 2009 | |
| App Note | True-Shutdown Circuit |
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
Parametric specs for Step-Up Switching Regulators
| VIN (V) (min) | 2.6 |
| VIN (V) (max) | 5.5 |
| VOUT1 (V) (min) | 2.6 |
| VOUT1 (V) (max) | 20 |
| IOUT1 (A) (max) | 0.6 |
| Switch Type | Internal |
| Output Adjust. Method | Resistor |
| IQ (mA) (typ) | 0.3 |
| Shutdown Mode Supply Current (µA) (typ) | 160 |
| Shutdown Mode Supply Current (µA) (max) | 250 |
| # DC-DC Outputs | 1 |
| Switching Frequency (kHz) | 1000 |
| Package/Pins | TDFN/10 |
| Budgetary Price (See Notes) | 1.14 |
Key Features
- Input Overvoltage Protection
- Adjustable Output from VIN to 20V
- 2.6V to 5.5V Input Supply Range
- Input Supply Undervoltage Lockout
- 1MHz Fixed Switching Frequency
- Programmable Soft-Start
- Small 10-Pin, TDFN Package
- Thermal-Overload Protection
Applications/Uses
- LCD Monitor Panels
- Notebook Computer Displays
Description
The MAX17112 is a high-performance, step-up, DC-DC converter that provides a regulated supply voltage for active-matrix thin-film transistor (TFT) liquid-crystal displays (LCDs). The MAX17112 incorporates current-mode, fixed-frequency (1MHz), pulse-width modulation (PWM) circuitry with a built-in, n-channel power MOSFET to achieve high efficiency and fast-transient response. The input overvoltage protection (OVP) function prevents damage to the MAX17112 from an input surge voltage (up to 24V).
The high switching frequency (1MHz) allows the use of ultra-small inductors and low-ESR ceramic capacitors. The current-mode architecture provides fast-transient response to pulsed loads. A compensation pin (COMP) gives users flexibility in adjusting loop dynamics. The internal MOSFET can generate output voltages up to 20V from an input voltage between 2.6V and 5.5V.
Soft-start slowly ramps the input current and is programmable with an external capacitor. The MAX17112 is available in a 10-pin TDFN package.
The high switching frequency (1MHz) allows the use of ultra-small inductors and low-ESR ceramic capacitors. The current-mode architecture provides fast-transient response to pulsed loads. A compensation pin (COMP) gives users flexibility in adjusting loop dynamics. The internal MOSFET can generate output voltages up to 20V from an input voltage between 2.6V and 5.5V.
Soft-start slowly ramps the input current and is programmable with an external capacitor. The MAX17112 is available in a 10-pin TDFN package.
Technical Docs
| Data Sheet | High-Performance, Step-Up, DC-DC Converter | Feb 20, 2009 | |
| App Note | True-Shutdown Circuit |
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 .
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