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LTC3553EUD
+BOMIC USB POWER MANAGER
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ManufacturerAnalog Devices Inc.
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Mfr. Part #LTC3553EUD
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In Stock8074
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Specifications
| Attribute | Value |
| Part Status | Obsolete |
| Base Product Number | LTC3553 |
| 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) |
| Packaging | Tube |
Overview
Description
LTC3553EUD is a synchronous buck-boost DC-DC converter from Linear Technology (now Analog Devices). It’s designed for battery-powered portable devices, enabling a stable output rail from a single-cell Li‑ion input (and can support multiple rails from the same source) with high efficiency.
Key features (typical): integrated high-side/low-side switches (no external FETs), current-mode control, up to amps of switching current, selectable modes for efficiency (burst/eco) and fast transient response, plus protections such as undervoltage lockout, overcurrent, and thermal shutdown. The EUD suffix identifies a specific package/footprint and lead-free option; check the datasheet for the exact package details.
Common applications: power management in wearables, smartphones, cameras, and IoT devices where a single Li‑ion cell must generate stable rails with high efficiency.
For exact specs (input range, output voltage options, efficiency, pinout, and package), refer to the LTC3553EUD datasheet on Analog Devices’ website.
Key features (typical): integrated high-side/low-side switches (no external FETs), current-mode control, up to amps of switching current, selectable modes for efficiency (burst/eco) and fast transient response, plus protections such as undervoltage lockout, overcurrent, and thermal shutdown. The EUD suffix identifies a specific package/footprint and lead-free option; check the datasheet for the exact package details.
Common applications: power management in wearables, smartphones, cameras, and IoT devices where a single Li‑ion cell must generate stable rails with high efficiency.
For exact specs (input range, output voltage options, efficiency, pinout, and package), refer to the LTC3553EUD datasheet on Analog Devices’ website.
Pinout
- Pin count: 16 pins (16‑lead package)
- Function: A single‑cell Li‑ion battery charger with an integrated high‑efficiency buck‑boost DC‑DC converter and power‑path management (system supply/charging).
- Function: A single‑cell Li‑ion battery charger with an integrated high‑efficiency buck‑boost DC‑DC converter and power‑path management (system supply/charging).
Manufacturer
Manufacturer: Linear Technology Corporation (LTC). It was a U.S. semiconductor company that designed and manufactured analog integrated circuits, especially power-management ICs. In 2017 Linear Technology was acquired by Analog Devices, and LTC parts are now marketed under Analog Devices.
Application
LTC3553EUD is used in compact, high‑efficiency power regulators for battery-powered systems. Typical application areas include:
- Battery-powered portable electronics (smartphones, wearables, handheld devices)
- USB power management and Li‑ion charging
- Solar-energy harvesting and back‑up power supplies
- Power‑path management for critical loads in consumer devices
- LED backlighting/indicator lighting
- Automotive and industrial handheld instruments requiring a small, efficient regulator with protection features
- Battery-powered portable electronics (smartphones, wearables, handheld devices)
- USB power management and Li‑ion charging
- Solar-energy harvesting and back‑up power supplies
- Power‑path management for critical loads in consumer devices
- LED backlighting/indicator lighting
- Automotive and industrial handheld instruments requiring a small, efficient regulator with protection features
Package
LTC3553EUD is in a 20‑pin QFN (LQFN) package with an exposed pad.
