F1F9,F1F3,F1LE,F1CE降压芯片的IC资料

2020-08-05 20:32:00
夸克微
原创
1457

F1F3是PW2057-33,输出3.3V
F1LE是PW2057-18, 输出1.8V
F1CE是PW2057-12,输出1.2V

F1F9是PW2059    输出可调的
代理

深圳夸克微科技 

郑R 13528458039 

QQ  2867714804



GENERALDESCRIPTION

The PW2057 is a constant frequency, currentmode step-down converter. The device integrates a main switch and a synchronousrectifier for high efficiency without an external Schottky diode. It is idealfor powering portable equipment that runs from a single cell Lithium-Ion (Li+)battery. 100% duty cycle capability extends battery life in portable devices,while the quiescent current is 200μA with no load, and drops to <1μA in shutdown.

 

FEATURES



l  High Efficiency: Up to 95%

l  1.0MHz Frequency Operation

l  2.2V to 5.5V Input Voltage Range

l  Current Mode Operation for ExcellentLine and Load Transient Response

l  Low Quiescent Current: 200μA

l  Output Voltage: 0.6V ~ 5.5V

l  Automatic PWM/PFM Mode Switching

l  No Schottky Diode Required

l  Short-Circuit Protection

l  Shutdown Quiescent Current: < 1μA

l  Low Profile SOT-23-5L Package(lead-free)


 


APPLICATIONS

Digital cameras and MP3

Palmtop computers / PDAs

Cellular phones

PC cards

Portable media players



发表评论
评论通过审核后显示。