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July 2009 |
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Over-Voltage and Over-Current Charger Front-End Protection IC with FET: The bq2435x is a highly integrated device that protects Li-ion batteries from charging circuit failures. The IC continuously monitors the input and battery voltage, immediately turning off the internal power FET in case of an input over-voltage condition.
Resources:
Data sheet
- Input over-voltage, input over-current, and battery over-voltage protection for maximum system and battery protection
- Integrated charge FET regulates the output voltage and current under host control
- Applications: Mobile phones, low-power, handheld devices
bq2435x Price (1ku): $ 0.65/$ 0 .75 |
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2.95-V to 6-V Input, 4-A, 2-MHz Synchronous Step-Down SWIFT™ DC/DC Converter: The TPS54418 4-A DC/DC converter with two 30-mΩ integrated MOSFETs provides a small design footprint due to its fast switching frequency, small package size (3x3-mm, 16-pin QFN), and reduced external component count.
Resources:
Data sheet
- Current mode control architecture reduces compensation components while allowing small ceramic output capacitors
- Frequency programmable from 200kHz to 2MHz
- Applications: Low-voltage, high-density power systems, point-of-load regulation for high-performance DSPs, FPGAs, ASICs and microprocessors, broadband, networking and optical communications infrastructure
TPS54418 Price (1ku): $ 2.15/$ 2.40 |
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3-V to 14-V, 10-A Synchronous Step-Down Converter with D-CAP™ Mode: The TPS51315 is a high-performance, easy-to-use D-CAP™ mode switcher with low Rds(on) integrated MOSFETs ideal for high efficiency, high power density step-down conversion. The device supports high efficiency at light loads and fast transient response with the D-CAP adaptive on-time control architecture and auto-skip feature.
Resources:
Data sheet
- Power input supply: 3V to 14V; output voltage: 0.75V to 5.5V
- Integrates features to reduce external component count and increasing power density
- Applications: Portable devices, notebook computers, servers and desktops
TPS51315 Price (1ku): $ 4.75/$ 5.25 |
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5-V to 18-V Input, 3-A Synchronous Step-Down SWIFT™ Converter with D-CAP2™ Mode: The TPS54325 DC/DC converter employs an easy-to-use adaptive on-time (D-CAP2™ mode) architecture enabling a fast transient response time without compensation components.
Resources:
Data sheet
- Output voltage can be programmed between 0.76V and 5.5V with a voltage divider
- Designed for use with low-cost output capacitors, such as aluminum electrolytic capacitors or a 22-µF, low ESR ceramic output capacitor
- Applications: Digital TV, Blu-ray player, networking home terminal, digital set-top box
TPS54325 Price (1ku): $ 1.75/$ 1.55 |
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4.5-V to 24-V Input Dual Synchronous Buck Controller with Internal 5-V LDO and 700-kHz Switching Frequency Option
TPS53126 Price (1ku): $ 2.65/$ 2.40 |
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3-V to 28-V Input, 20-A Synchronous Step-Down Controller with DCAP™ Mode and 340kHz for Notebook Power
TPS51217 Price (1ku): $ 1.35/$ 1.50 |
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32-Bit, 192-kHz Sampling, Advanced Segment, Audio Stereo DAC: The PCM1795 DAC offers dynamic range of 123dB at 3.9-mA differential current output, along with full 32-bit digital data processing. The device also features the ability to play back audio data beyond the 25th data bit due to a noise floor below -150dB.
Resources:
Data sheet
- Balanced current outputs allow the designer to optimize analog performance externally
- Accepts pulse code modulation and direct stream digital audio data formats
- Applications: Blu-ray players, AV receivers, home theater-in-a-box, professional audio systems, digital TV, car audio external amps, car navigation systems
PCM1795 Price (1ku): $ 3.95 |
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Low-Noise, 900-kHz, 50µV, Rail-to-Rail Input/Output, Zero-Drift Precision Op Amp: The OPA378 op amp features low noise and low power—the lowest of any zero-drift topology—at wide gain bandwidth. Input voltage noise from 0.1Hz to 10Hz of 0.4µVp-p and quiescent current of 150µA (max) make this amp ideal for high-resolution and battery powered systems.
Resources:
Data sheet
- Low offset voltage of 20µV; low drift of 0.1µV/°C
- Auto-zeroing corrects DC or low frequency offset essentially removing the 1/f noise component, particularly beneficial to sensor applications
- Applications: Portable medical devices, glucose meters, ECG and EEG, current sensing, energy harvesting, thermopile module, sensor signal conditioning, thermocouple, low-side current sensing
OPA378 Price (1ku): $ 0.70/$ 0.80 |
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Stepper Motor Controller IC: The DRV8811 provides an integrated stepper motor driver solution for printers, scanners, and other automated equipment applications. The device has two H-bridge drivers, as well as micro-stepping indexer logic to control a stepper motor.
Resources:
Data sheet
- Output driver block for each consists of N-channel power MOSFETs configured as full Hbridges to drive motor windings
- Simple step/direction interface allows easy interfacing to controller circuits
- Applications: Printers, scanners, office automation machines, gaming machines, factory automation, robotics
DRV8811 Price (1ku): $ 2.00/$ 1.80 |
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Digitally Controlled Microphone Preamp: The PGA2505 is a lower performance/lower cost follow-on device to the existing PGA2500 digitally controlled, analog microphone preamp IC, designed for use as a front end for high-performance audio ADCs. Features include low noise, wide dynamic range, and a differential signal path.
Resources:
Data sheet
- On-chip DC servo loop minimizes DC offset; common-mode servo function can be used to enhance common-mode rejection
- Gain range of 9dB through 60dB (3dB/step), along with a unity gain setting
- Applications: Microphone preamps, digital audio mixers, digital audio recorders, broadcast equipment, studio equipment
PGA2505 Price (1ku): $ 5.45/$ 4.95 |
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x1 PCI Express to PCI Bus Translation Bridge: The XIO2001 is a x1 PCI Express bus to a 32-bit, 25- to 66-MHz PCI bus translation bridge. It can support up to six PCI devices downstream and the full Gen 1 PCI Express data rate of 2.5Gbps upstream.
Resources:
Data manual,
video
- Compliant with PCI Express to PCI/PCI-X Bridge Spec Rev 1.0, PCI Express Base Spec 2.0 @ 2.5Gbps, and PCI Local Bus Spec Rev 2.3
- Integrated PCI classic arbiter and clock buffers for up to six PCI bus devices, reducing external components, BOM cost and board space
- Built-in receiver adapter equalizer improves jitter tolerance, reliably increasing PCB trace or cable length supported
- Applications: PCs, server host-bus adapter, embedded systems, industrial control and backplane, docking stations, add-in cards
XIO2001 Price (1ku): $ 5.50/$ 6.05 |
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IEEE P1394b Three-Port Cable Transceiver Arbiter: The TSB81BA3E s800 physical layer provides the digital and analog transceiver functions needed to implement a three-port node in a cable-based IEEE 1394 network. Each cable port incorporates two differential line transceivers that include circuitry to monitor the line conditions as needed for determining connection status, initialization and arbitration, and packet reception and transmission.
Resources:
Data sheet,
video
- Improved jitter performance enables longer cable lengths and easier board layout
- Eliminates need for an external regulator in most use scenarios
- Applications: 1394b-enabled storage devices, PCI Express or Express card 1394b add-in cards, 1394b-enabled desktop or notebook computers
TSB81BA3E Price (1ku): $ 5.40 |
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8-Channel, 4.25-Gbps Repeater: The SN65LVCP418 signal conditioning buffer uses VML signaling to achieve high-speed data throughput at low power. Internal signal paths are fully differential to achieve the high signaling speeds while maintaining low signal skews.
Resources:
Data sheet,
video
- In a flow-through pin-out, allowing for ease in PCB layout
- Incorporates 100-Ω termination resistors for applications where board space is at a premium
- Applications: Clock buffering/MUXing, wireless base stations, high-speed network routing, telecom/datacom
SN65LVCP418 Price (1ku): $ 9.50/$ 10.45 |
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x1 PCIe-to-1394b OHCI Host Controller with 3 Bilingual Ports, Improved Jitter Performance, and Lower Cost
XIO2213B Price (1ku): $ 6.75 |
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Low-Voltage, 16-Bit, I²C and SMBus I/O Expander with Wide Vcc Range
TCA6416A Price (1ku): $ 1.65 |
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6-Bit, 1-of-2 Mux/Demux with 240-MHz Bandwidth: The TS3A27518E, designed to operate from 1.65V to 3.6V, supports digital as well as analog signals that can be transmitted in either direction. The device has two control pins, each controlling three 1-of-2 muxes at the same time, and an enable pin that is used to put all I/Os in a high-impedance mode.
Resources:
Data sheet
- Control pins compatible with 1.8-V logic thresholds; backward-compatible with 2.5-V and 3.3-V logic thresholds
- Allows a single SD host controller to communicate with one of two SD cards
- Applications: Portable consumer (cell phones, PDA, PMP, DSC), notebooks and netbooks, video routing
TS3A27518E Price (1ku): $ 0.90 |
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Serial Real-Time Clock for High-Volume, Cost-Sensitive Applications: The bq32000 features an automatic backup supply, with integrated trickle charger, that can be implemented using a capacitor or non-rechargeable battery. An automatic switchover to back-up supply assures data integrity in the event of a power loss.
Resources:
Data sheet,
video
- Programmable calibration adjustment from –63 ppm to +126 ppm
- Registers include an OF (oscillator fail) flag indicating the status of the RTC oscillator, as well as a STOP bit that allows the host processor to disable the oscillator
- Application: General consumer electronics
bq32000 Price (1ku): $ 0.85/$ 0.75 |
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System Block Diagrams
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TUSB3410 Implementation Tips: The TUSB3410 provides bridging between a USB port and an enhanced UART serial port. |
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Understanding PENIRQ of Touch-Screen Controllers: A discussion on the function and behavior of the digital output or hardware interrupt pin on all TI’s TSC devices. |
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Input Impedance Matching with Fully Differential Amplifiers: Learn how to analyze the input impedance of an FDA. |
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Battery-Charger Front-End ICs Improve Charging System Safety: A new IC helps designers build portable devices that will meet safety and reliability requirements when used with different adapters. |
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Technology Days 2009: Join TI for a day packed with technical design sessions and technology exhibits. The seminar provides a learning forum where practical high-performance design solutions, tools, techniques, topologies and examples will be presented. |
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Low-Power RF Solutions Workshop: This workshop will accelerate the time to market for engineers working with TI’s four wireless networking protocols; SimpliciTI, TI-MAC, ZigBee®, and Z-Accel. You can choose to attend the first 2 days of the workshop covering SimpliciTI or attend the entire 4-day workshop which also covers the 802.15.4 protocols (TI-MAC, ZigBee, Z-Accel). |
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| COMPANY-AUTHORED ARTICLES IN THE MEDIA |
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| “Where Did All that Racket Come From?,” by Bonnie Baker. EDN.com, April 2009. |
| “Power Tip #12: Maximize Power Supply Efficiency,” by Robert Kollman. PowerManagementDesignLine.com, June 2009. |
| “Heterodyne vs. Direct Conversion Architecture,” by Chuck Sanna. Electronic Products, June 2009. |
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| CUSTOMER SUPPORT CONTACT INFORMATION |
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TI E2E Online Community: Visit TI’s Online Community and interact with your peer engineers, TI engineers, and other experts in order to ask questions, share knowledge, explore ideas, and help solve problems.
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