Features
? ??Fixed 5V ± 4% Output
? ??VIN Range: 2.8V to 4.5V
? ??Output Current: Up to 100mA（VIN≥2.8V）
??????????????????????????????? Up to 250mA（VIN≥3.6V）
? ??Constant Frequency Operation at All Loads
? ??Low Noise Constant Frequency (400kHz) Operation
? ??Automatic Soft-Start Reduces Inrush Current
? ??Shutdown Current<1μa< span="">
? ??Short-Circuit Protection
? ??No Inductors
? ??Available in Low Profile 6-Lead SOT23 Package
?
Typical Application Circuit
Description
The HX4004 is a low noise, constant frequency (400kHz) switched capacitor voltage doubler. It produces a regulated output voltage from a 2.8V to 4.5V input. Low external parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT) make the HX4004 ideally suited for small, battery-powered applications.
The HX4004 have thermal shutdown capability and can survive a continuous short circuit from VOUT to GND. Built-in soft-start circuitry prevents excessive inrush current during start-up.
High switching frequency enables the use of small ceramic capacitors. A low current shutdown feature disconnects the load from VIN and reduces quiescent current to<1ua.< span="">
The HX4004 is available in the SOT-23-6L power packages.
?
Applications
?
? ??White LED Backlighting
?
? ??Li-Ion Battery Backup Supplies
?
? ??Local 3V to 5V Conversion
?
? ??Smart Card Readers
?
?
? ??PCMCIA Local 5V Supplies
?
聯(lián)系我們：
?
地址：深圳市福田區(qū)振華路中航北苑大廈C棟18-C2
電話：0755-82773035 ? ?0755-82542659?（銷售部）
傳真：0755-82773035-8005
24小時手機：13538044409
QQ：569245126? /? 505419454
?
?
? ? ? ? ??供好芯片，讓您造好產(chǎn)品!?
?
