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30μA No-Load Quiescent Current in Burst Mode Operation
Ultralow Noise Buck-Boost PWM
Internal Soft-Start
3μA Supply Current in Shutdown
Programmable Input Undervoltage Lockout
Small 4mm × 5mm × 0.75mm DFN Package
Thermally Enhanced 20-Lead TSSOP Package
引腳封裝定義：
VCC Undervoltage Lockout Threshold VCC Falling 2.4-- 2.6 V
Oscillator Frequency RT = 35.7k l 900 1000 1100 kHz
Oscillator Operating Frequency l 100 2000 kHz
PWM/SYNC Clock Input Frequency l 100 2000 kHz
PWM/SYNC Input Logic Threshold l 0.5 1.0 1.5 V
Soft-Start Duration 9 ms
Feedback Voltage l 977 1000 1017 mV
Feedback Voltage Line Regulation VIN = 2.7V to 40V 0.1 %
Feedback Pin Input Current 1 50 nA
RUN Pin Input Logic Threshold l 0.3 0.8 1.1 V
RUN Pin Comparator Threshold VRUN Rising l 1.16 1.21 1.26 V
N-Channel Switch Resistance Switch A （From PVIN to SW1）
Switch B （From SW1 to PGND） 150 mΩ
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