Key Features

• Tri-mode operation (Chip Enable (CE mode), Fast Transient Mode (FT mode), and Low Power Mode (LP mode))
• Low dropout voltage: Typ 550 mV at 300 mA, Output Voltage = 0.9 V
• Excellent line regulation of 0.01%/V (0.05%/V in LP mode)
• Excellent load regulation of 15 mV (40 mV in FT mode)
• High output voltage accuracy of ±2% (±3% in LP mode)
• Ultra-low quiescent current: 3.5 µA (LP mode, Output Voltage < 1.6 V), 80 µA (FT mode, Output Voltage < 1.8 V), 60 µA (FT mode, Output Voltage = 1.8 V)
• Very low shutdown current of 0.1 µA
• Excellent power supply rejection ratio of 70 dB at f = 1.0 kHz
• Low temperature drift coefficient on the output voltage of ±100 ppm/°C
• Fold back protection circuit
• Input voltage up to 6.5 V
• Pb-Free devices

Applications

• Portable Equipment
• Hand-Held Instrumentation
• Camcorders and Cameras

Pin Configuration

• Pin 1: Vin - Power supply input voltage.
• Pin 2: No Connect (NC).
• Pin 3: Vout - Regulated output voltage.
• Pin 4: ECO - Mode alternative pin (VECO = Vin for FT mode; VECO = GND for LP mode).
• Pin 5: GND - Power supply ground.
• Pin 6: CE - Chip enable pin.

Electrical Characteristics

• Input Voltage Range: 1.4 V to 6.0 V
• Output Voltage Tolerance: ±2% for Vout = 0.9 V to 1.5 V
• Line Regulation: 0.01%/V in FT mode, 0.05%/V in LP mode
• Load Regulation: 15 mV in FT mode, 40 mV in LP mode
• Dropout Voltage: 1.0 V to 1.25 V for Vout = 0.9 V, 1.5 V to 2.5 V for Vout = 1.5 V, 2.8 V to 3.3 V for Vout = 3.3 V
• Quiescent Current: 3.5 µA to 80 µA depending on mode and output voltage
• Shutdown Current: 0.1 µA

Mechanical Specifications

• Package Type: SOT23-5
• Case: 1212-01

Operating Conditions

• Operating Ambient Temperature Range: -40°C to +85°C
• Maximum Junction Temperature: 125°C
• Storage Temperature Range: -55°C to +150°C