描述
The H (Metal Can), J (Ceramic), and K (Metal Can) Packages From Linear Technology Are Now Obsolete
The LTC690 family powers the active CMOS RAMs with a charge pumped NMOS power switch to achieve low dropout and low supply current. When primary power is lost, auxiliary power, connected to the battery input pin, powers the RAMs in standby through an efficient PMOS switch. For an early warning of impending power failure, the LTC690 family provides an internal comparator with a user-defined threshold. An internal watchdog timer is also available, which forces the reset pins to active states when the watchdog input is not toggled prior to a preset time-out period.
Typical Application
特点
- UL Recognized: File #E145770
- Guaranteed Reset Assertion at Vcc = 1V
- 1.5mA Maximum Supply Current
- Fast (35ns Max.) Onboard Gating of RAM Chip Enable Signals
- SO-8 and SO-16 Packaging
- 4.65V Precision Voltage Monitor
- Power OK/Reset Time Delay: 50ms, 200ms, or Adjustable
- Minimum External Component Count
- 1µA Maximum Standby Current
- Voltage Monitor for Power Fail or Low Battery Warning
- Thermal Limiting
- Performance Specified Over Temperature
- Superior Upgrade for MAX690 Family
应用
供应商
FROM: Company Name: Aunytor Electronic (HK) Co.,Ltd
Contact Person: Charlotte
Skype: Aunytor
whatsapp：+86 13537622113
Email: carrot@aunytorchips.com