Features: VIN Range: 2.7V to 5.5VVOUT Adjustable Down to 0.6V-Fixed or Adjustable Versio25ANo Load Quiescent CurrenUp to 95% Efficiency400mAMax Output Current1MHz Switching FrequencySoft StartOver-Temperature ProtectionCurrent Limit Protection100% Duty Cycle Low-Dropout Operation0.1AShutdown Curre...
AAT1143: Features: VIN Range: 2.7V to 5.5VVOUT Adjustable Down to 0.6V-Fixed or Adjustable Versio25ANo Load Quiescent CurrenUp to 95% Efficiency400mAMax Output Current1MHz Switching FrequencySoft StartOver-T...
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Symbol | Description |
Value | Units |
VCC , VP |
VCC , VP to GND |
6.0 |
V |
VLX |
LX to GND | -0.3 to VP +0.3 | V |
VFB |
FB to GND | -0.3 to V CC+0.3 | V |
VEN | EN to GND | -0.3 to 6 | V |
TJ |
Operating Junction Temperature Range | -40 to 150 | °C |
TLEAD | Maximum Soldering Temperature (at leads, 10 sec) | 300 | °C |
The AAT1143 SwitchReg™ is a member of AnalogicTech's Total Power Management IC™ (TPMIC™) product family. It is a 1MHz step-down converter with an input voltage range of 2.7V to 5.5V and output as low as 0.6V. Its low supply cur- rent, small size, and high switching frequency make the AAT1143 the ideal choice for portable applications.
The AAT1143 is available in either a fixed version with internal feedback or a programmable version with external feedback resistors. It can deliver 400mAof load current while maintaining a low 25Ano load quiescent current. The 1MHz switch ing frequency minimizes the size of external com-ponents while keeping switching losses low. The AAT1143 feedback and control delivers excellent load regulation and transient response with a small output inductor and capacitor.