DS8561-33S5

The DS8561 series is a family of low-dropout (LDO) regulators featuring a wide input voltage range of 1.2V to 5.5V, low dropout voltage, low power consumption, and compact packaging. With an ultra-low quiescent current of 2µA, the DS8561 is particularly well-suited for battery-powered devices and long-term standby applications, helping to reduce system standby power consumption while effectively extending standby time and battery life. An optional version with an EN enable pin is available — pulling the EN pin low puts the device into shutdown mode, where quiescent current drops to as low as 100nA (typical). The DS8561 series supports ceramic output capacitors and operates stably across the full 1.2V to 5.5V input voltage range and the entire output load current range of 0mA to 300mA.

Applications

• Handheld, battery-powered devices
• Low-power microprocessors
• Laptops, palmtop computers, and PDAs
• Wireless communication devices, audio/video equipment
• In-vehicle navigation systems

Key features

• 2µA quiescent current (no load)
• ±2% output voltage accuracy
• 300mA output current capability
• 100nA shutdown current (optional version)
• Wide input voltage range: 1.2V to 5.5V
• Low dropout: 0.18V (at ΔVO = 3.3V / Io = 300mA)
• Fixed output voltage options: 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V
• Ceramic and tantalum capacitor compatible
• Current limiting protection
• Overtemperature protection
• Available in SSOT-23, SOT-23-3, SOT-23-5, SC-70-5, DFN1x1-4L, and DFN2x2-6L packages