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Analog Devices MAX16928
Automotive TFT-LCD Power Supply with Boost Converter and Gate Voltage Regulators
Overview
| Topology | Boost Converter |
| Input voltage | 4.5-5.5 V |
| Switching frequency | 1980-2420 kHz |
| Output 1 | 12 V / 0.4 A |
| IC revision | 2 |
Description
The MAX16928 is a highly integrated power supply for automotive TFT-LCD applications. The device integrates one boost converter, one 1.8V/3.3V regulator controller, and two gate voltage regulators. The device comes in several versions to satisfy common automotive TFT-LCD power-supply requirements (see the Ordering Information table).The boost converter uses spread-spectrum modulation to reduce peak interference and to optimize EMI performance. The sequencing input (SEQ) allows flexible sequencing of the positive-gate and negative-gate voltage regulators. The power-good indicator (PGOOD) indicates a failure on any of the converters or regulator outputs. Integrated thermal shutdown circuitry protects the device from overheating.The MAX16928 is available in a 20-pin TSSOP package with exposed pad and operates over the -40NC to +105NC temperature range.
Features
- High-Power (Up to 6W) Boost Output Providing Up to 18V
- 1.8V or 3.3V Regulator Provides 500mA with External npn Transistor
- One Positive-Gate Voltage Regulator Capable of Delivering 20mA at 28V
- One Negative-Gate Voltage Regulator
- High-Frequency 2.2MHz Operation
- Flexible Stand-Alone Sequencing
- True Shutdown™ Boost Converter
- Internal Soft-Start
- Overtemperature Shutdown
- -40NC to +105NC Operation
- AEC-Q100 Qualified
Typical applications
- Automotive Dashboards
- Automotive Central Information Displays
- Automotive Navigation Systems
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCI SMT Flat Wire High Current Inductor, 3.3 µH, 10.9 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance3.3 µH | Performance Rated Current10.9 A | Saturation Current @ 10%3.2 A | Saturation Current @ 30%8 A | DC Resistance9 mΩ | Self Resonant Frequency65 MHz | MaterialSuperflux |