ADP2503ACPZ-5.0-R7

ADP2503ACPZ-5.0-R7 is a high-efficiency, low-quiescent current step-up/step-down dc-to-dc converter that can operate at input voltages greater than, less than, or equal to the regulated output voltage. The power switches and synchronous rectifiers are internal to minimize external device count. At high load currents, the ADP2503 uses a current-mode, fixed frequency pulse width modulation (PWM) control scheme for optimal stability and transient response. To ensure the longest battery life in portable applications, the ADP2503 has an optional power save mode that reduces the switching frequency under light load conditions. For wireless and other low-noise applications where variable frequency power save mode may cause interference, the logic control input sync forces fixed frequency PWM operation under all load conditions. Applications include wireless handsets, digital cameras/portable audio players, miniature hard disk power supplies, USB powered devices.

• Internal compensation, soft start, enable/shutdown logic input
• Overtemperature protection, short-circuit protection, undervoltage lockout protection
• Input voltage range from 2.3V to 5.5V, SYNC pin with three different modes
• Boost converter configuration with load disconnect, seamless transition between modes
• Quiescent current (VIN) is 38µA typical at (IOUT = 0mA, VIN = EN = 3.6V, device not switching)
• Shutdown current is 0.2µA typical at (TA = TJ = -40°C to +125°C)
• Oscillator frequency is 2.5MHz typical at (VIN = 3.6V, VOUT = 3.3V, at TA = TJ = -40°C to +125°C)
• Switch current limit is 1.4A maximum at (VIN = 3.6V, VOUT = 3.3V, at TA = TJ = -40°C to +125°C)
• 5V voltage, 0.6A maximum current
• Operating ambient temperature range from -40°C to +125°C, 10-lead LFCSP package

Opmerkingen

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