Skyworks Solutions, Inc.: Power Management Unit: AAT2554: AAT2554IRN-CAP-T1

Power Electronics Products from CDI

2.7V, 250mA Step-Down DC/DC + Charger + 300mA LDO, TDFN34-16TR
Manufacturer: Skyworks Solutions, Inc.
Status: Obsolete
Data Sheet: AAT2554IRN-CAP-T1 Data Sheet
RoHS Compliance: Skyworks Solutions, Inc., AAT2554IRN-CAP-T1, Power Management Unit, 2.7V, 250mA Step-Down DC/DC + Charger + 300mA LDO, TDFN34-16TR (Rohs Compliant), Component Distributors Inc. (CDI) Yes
Battery Charger Type:
# of Step-Up Regulators:
# of Step-Down Regulators:
# of LDO Regulators:
Min Vin:
2.7 V
Max Regulator Vin:
5.5 V
Max Charger Vin:
6.5 V
Max Charge Current:
500 mA
Single Ch. Max Output Current:
300 mA
Single Ch. Min Output Voltage:
0.6 V
Vout Max:
5.5 V
Output Voltage Controls:
External Resistors, Fixed
Operating Frequency:
1500 kHz
3 x 4 x 0.75, TDFN34 16L
Also Available
Part FunctionPart NumberDescription
Evaluation Board AAT2554IRN-CAP-T1-DB1 Skyworks Solutions, Inc. Evaluation board for AAT2554IRN-CAP-T1
The AAT2554 is a fully integrated 500mA battery charger, a 250mA step-down converter, and a 300mA low dropout (LDO) linear regulator. The input voltage range is 4V to 6.5V for the battery charger and 2.7V to 5.5V for the step-down converter and linear regulator, making it ideal for applications operating with single-cell lithium-ion/polymer batteries. The battery charger is a complete constant current/constant voltage linear charger. It offers an integrated pass device, reverse blocking protection, high accuracy current and voltage regulation, charge status, and charge termination. The charging current is programmable via external resistor from 15mA to 500mA. In addition to these standard features, the device offers over-voltage, current limit, and thermal protection. The step-down converter is a highly integrated converter operating at a 1.5MHz switching frequency, minimizing the size of external components while keeping switching losses low. It has independent input and enable pins. The output voltage ranges from 0.6V to the input voltage. The AAT2554 linear regulator is designed for fast transient response and good power supply ripple rejection. Designed for 300mA of load current, it includes short-circuit protection and thermal shutdown. The AAT2554 is available in a Pb-free, thermally-enhanced TDFN34-16 package and is rated over the -40°C to +85°C temperature range.