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| 型号： | SP6669EB |
| 厂商： | Exar Corporation |
| 文件页数： | 1/11页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR SP6669 |
| 标准包装： | 1 |
| 系列： | * |
| 工具箱： | 1016-1749-ND - LOW POWER DESIGN KIT 732-3616-ND - LOW POWER DESIGN KIT |
S P 6 6 6 9
6 0 0 m A 1 . 5 M H z S y n c h r o n o u s S t e p D o w n C o n v e r t e r
November 2012
GENERAL DESCRIPTION
The SP6669 is a synchronous current mode
PWM step down (buck) converter capable of
delivering up to 600mA of current. It features
a pulse skip mode (PSM) for light load
efficiency and a LDO mode for 100% duty
cycle.
With a 2.5V to 5.5V input voltage range and a
1.5MHz switching frequency, the SP6669
allows the use of small surface mount
inductors and capacitors ideal for battery
powered portable applications. The internal
synchronous switch increases efficiency and
eliminates the need for an external Schottky
diode. Low output voltages are easily
supported with the 0.6V feedback reference
voltage. The SP6669 is available in an
adjustable output voltage version, using an
external resistor divider circuit, as well as
fixed output voltage versions of 1.2V, 1.5V
and 1.8V.
Built-in over temperature and output over
voltage lock-out protections insure safe
operations under abnormal operating
conditions.
The SP6669 is offered in a RoHS compliant,
“green”/halogen free 5 -pin SOT23 package.
Rev. 2.2.0
APPLICATIONS
? Portable Equipments
? Battery Operated Equipments
? Audio-Video Equipments
? Networking & Telecom Equipments
FEATURES
? Guaranteed 600mA Output Current
? Input Voltage: 2.5V to 5.5V
? 1.5MHz PWM Current Mode Control
? 100% Duty Cycle LDO Mode Operations
? Achieves 95% Efficiency
? Fixed/Adjustable Output Voltage
Range
? As Low as 0.6V with ±3% Accuracy
? 1.2V, 1.5V, 1.8V Fixed Voltage Options
? Excellent Line/Load Transient
Response
? 200μA Quiescent Current
? Over Temperature Protection
? RoHS Compliant “Green”/Halogen Free
5-Pin SOT23 Package
TYPICAL APPLICATION DIAGRAM
Fig. 1: SP6669 Application Diagram (Adj. version shown)
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
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| SP668 | 制造商:Power-One 功能描述: |
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