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LTC3553EUD#TRPBF
+BOMIC USB POWER MANAGER 20UTQFN
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ManufacturerAnalog Devices Inc.
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Mfr. Part #LTC3553EUD#TRPBF
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Datasheet LTC3553EUD#TRPBF DataSheet
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In Stock2573
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Specifications
| Attribute | Value |
| Part Status | Active |
| Applications | Handheld/Mobile Devices |
| Supply Current | 12µA |
| Voltage - Supply | 4.3V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | 20-WFQFN Exposed Pad |
| Supplier Device Package | 20-QFN (3x3) |
| Base Product Number | LTC3553 |
Overview
Description
Key features include:
- USB-compliant power management with step-down DC/DC conversion.
- A battery charger that supports constant-current and constant-voltage modes.
- Integrated PowerPath control, allowing simultaneous battery charging and device operation.
- Multiple LDO regulators for efficient power distribution.
- Compact MSOP package, ideal for space-constrained applications.
The LTC3553EUD#TRPBF is suitable for applications like smartphones, portable media players, and other handheld devices, where efficient power management and extended battery life are critical. Its ability to manage power from USB inputs and its versatile charging capabilities make it a popular choice in the field of consumer electronics.
Equivalent
1. Texas Instruments bq24195 - Integrated battery charge management IC.
2. Microchip MCP73871 - Single cell charge management controller.
3. Maxim Integrated MAX8903 - Dual input USB/adapter power management IC.
Always verify compatibility with your specific application requirements.
Features
1. Multi-Functionality: It integrates a linear battery charger, a dual step-down DC/DC converter, and an always-on LDO, optimizing for space and efficiency.
2. Battery Charger: Supports Li-Ion and Li-Polymer batteries with programmable charge currents up to 950mA, and includes automatic recharge and termination.
3. Step-Down Converters: Two synchronous step-down converters provide high efficiency (up to 95%) and can deliver output currents up to 400mA and 800mA respectively.
4. Low Dropout Linear Regulator (LDO): Provides a low-noise output of 25mA, suitable for powering always-on applications.
5. PowerPath Control: Enables seamless transition between power sources to ensure uninterrupted operation.
6. USB Compatibility: Designed for USB power specifications, allowing safe and efficient charging from USB sources.
7. Safety Features: Includes thermal regulation, over-voltage, and short-circuit protection to enhance reliability and safety.
8. Compact Package: Available in a 16-lead (4mm × 3mm) DFN package, ideal for space-constrained designs.
Pinout
Key functions of the LTC3553 include:
1. Battery Charger: It offers a linear battery charger for single-cell Li-Ion/Li-Polymer batteries.
2. PowerPath Controller: Manages power distribution between the battery and an external power source.
3. Step-Down DC/DC Converters: Includes two synchronous step-down regulators for efficient voltage regulation.
4. LDO Regulator: Provides low dropout regulation for low noise power supply needs.
The 20-pin configuration allows for compact and efficient integration into various device designs, accommodating multiple power management tasks within the same IC, thus optimizing space and power efficiency in portable consumer electronics.