Texas Instruments TPS62691
4-MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER
FEATURES
1●2 95% Efficiency at 4MHz Operation
● 19μA Quiescent Current
● 4MHz Regulated Frequency Operation
● High Duty-Cycle Operation
● ±2% Total DC Voltage Accuracy
● Best in Class Load and Line Transient
● Excellent AC Load Regulation
● Low Ripple Light-Load PFM Mode
● ≥40dB VIN PSRR (1kHz to 10kHz)
● Internal Soft Start, 250-μs Start-Up Time
● Integrated Active Power-Down Sequencing (Optional)
● Current Overload and Thermal Shutdown Protection
● Three Surface-Mount External Components Required (One 2012 MLCC Inductor, Two 0402 Ceramic Capacitors)
● Complete Sub 1-mm Component Profile Solution
● Total Solution Size <12 mm2
● Available in a 6-Pin NanoFree™ (CSP) Efficiency - % Power Loss - mW 100 VI = 3.6 V, 95 VO = 2.85 V 90 Efficiency 85 PFM/PWM Operation 80 75 Power Loss 70 PFM/PWM Operation 65 60 55 50 0.1 1 10 100 IO - Load Current - mA 150 135 120 105 90 75 60 45 30 15 0 1000 Figure 1. Efficiency vs. Load Current
APPLICATIONS
● LDO Replacement● Cell Phones, Smart-Phones
● Po...