TCM829 Datasheet

enroo_ma

  TCM828/829 Datasheet (10/22/2002)

FEATURES
  Charge Pump in 5-Pin SOT-23A Package
  >95% Voltage Conversion Efficiency
  Voltage Inversion and/or Doubling
  Low 50µA (TCM828) Quiescent Current
  Operates from +1.5V to +5.5V
  Up to 25mA Output Current
  Only Two External Capacitors Required
APPLICATIONS
  LCD Panel Bias
  Cellular Phones
  Pagers
  PDAs, Portable Dataloggers
  Battery-Powered Devices
GENERAL DESCRIPTION
The TCM828/829 are CMOS “charge-pump” voltage
converters in ultra-small  5-Pin SOT-23A packages.  They
invert and/or double an input voltage which can range from
+1.5V to +5.5V.  Conversion efficiency is typically >95%.
Switching frequency is 12kHz for the TCM828 and 35kHz for
the TCM829.
External component requirement is only two capacitors
(3.3µF nominal) for standard voltage inverter applications.
With a few additional components a positive doubler can
also be built.  All other circuitry, including control, oscillator,
power MOSFETs are integrated on-chip. Supply current
is 50µA (TCM828) and 115µA (TCM829).
The TCM828 and TCM829 are available in a 5-Pin
SOT-23A surface mount package.

推荐MICROCHIP全系列产品推广商：（可申请部分免费样片，资料，大家赶快行动吧！）
授权A级代理商;提供技术支持;提供成熟方案;提供免费样品;提供详细资料！
深圳市英锐恩科技有限公司
联系电话: 0755-88845951 82543411传真：0755-82543511
E-mail: enroo@enroo.com
网址: www.enroo.com （”o”为字母）
公司地址: 福田区深南中路嘉汇新城汇商中心1203-1205
专业为客户提供芯片选型指导、技术咨询、开发工具技术支持、产品开发设计等专业的技术服务。
同时为Microchip全系列芯片代理推广商,分销服务商,专业提供Microchip全系列开发工具及技术支持。