TL499ACPE4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments TL499ACPE4 is a voltage-mode boost controller that steps up input voltages from 1.1V to 10V to regulated outputs up to 32V at 0.1A, housed in an 8-pin PDIP package, suitable for low-power battery-boost and supply rail generation.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- TL499ACPE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -20.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TL499ACPE4?
- Wide input voltage range of 1.1V to 10V supports single-cell alkaline, NiMH, and Li-ion battery sources
- Regulated step-up output up to 32V enables generation of high-voltage rails from low-voltage batteries
- Voltage-mode control provides stable regulation for resistive and capacitive load profiles
- 8-pin PDIP through-hole package simplifies prototyping and low-volume production assembly
What is TL499ACPE4 used for?
The TL499ACPE4 is designed for battery-powered equipment that requires a higher voltage supply rail than the battery can directly provide, such as LCD bias generators, piezoelectric transducer drivers, and small motor drives. Its ability to boost from as low as 1.1V input makes it useful for extending run time in alkaline or NiMH single-cell battery applications. The device is also applied in portable instrumentation and consumer electronics prototypes where a simple, through-hole boost regulator is required to supply 5V to 32V loads.
What are the specifications of TL499ACPE4?
| YTEOL | 0 |
| Additional Feature | IT ALSO REQUIRES 4.5 TO 32 V |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Input Voltage-Max | 10V |
| Input Voltage-Min | 1.1V |
| Input Voltage-Nom | 1.5V |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 1A |
| Output Voltage-Max | 30V |
| Output Voltage-Min | 2.9V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Surface Mount | NO |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 1000kHz |
| Technology | BIPOLAR |
| Temperature Grade | OTHER |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mexico |
Where can I find the TL499ACPE4 datasheet?
TL499ACPE4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TL499ACPE4?
Compatible alternatives and drop-in replacements for TL499ACPE4:
Frequently Asked Questions
What is the output voltage range of the TL499ACPE4 and how is the output regulated?
The TL499ACPE4 can regulate step-up output voltages up to 32V from input supplies as low as 1.1V. The output voltage is set by an external resistor divider connected to the feedback pin. Voltage-mode control maintains stable regulation across varying load and input conditions within the device's 0.1A output current capability.
Which battery chemistries can directly power the TL499ACPE4 boost controller?
The TL499ACPE4 starts up from input voltages as low as 1.1V, making it compatible with a nearly depleted single-cell alkaline battery at 0.9V to 1.5V nominal, a single NiMH cell at 1.2V, and regulated outputs from small solar cells. For 4.5V to 32V auxiliary rails, an additional supply input is available to enhance driver performance at higher input levels.
How does the TL499ACPE4 compare to integrated boost converter ICs for portable designs?
The TL499ACPE4 is a controller requiring external switching transistor, inductor, and diode, giving designers flexibility to optimize efficiency and current rating for their specific load. At 0.1A output capability, it suits light-load applications such as OLED and LCD bias supplies, bias rails for op-amps, and piezo buzzer drivers. For higher currents above 500 mA, a fully integrated boost converter would be more appropriate to reduce external component count.
What PCB considerations apply when using the TL499ACPE4 in an 8-pin PDIP package?
The 8-pin PDIP package has 2.54 mm pin pitch and a 7.62 mm row spacing, which is compatible with standard through-hole prototyping boards and DIP sockets. Designers should keep the switching inductor close to the switch pin to minimize loop inductance, place the output capacitor adjacent to the rectifier diode, and ensure the feedback resistor network is shielded from switching node noise to avoid output voltage jitter at frequencies up to several hundred kHz.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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