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CE63LH46XXQ
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General Description
CE63LH46XXQ is a family of 300mA watchdog low-dropout regulators (LDOs) designed for an operating voltage up to 40V, with typical quiescent current of only 20µA at light load. The devices integrate a programmable function for selecting a window watchdog or standard watchdog, with an external resistor to set the watchdog time within 10% accuracy.
The PG pin on the CE63LH46XXQ devices indicate when the output voltage is stable and in regulation. The power-good delay period and power-good threshold can be adjusted by selecting external components. The devices also feature integrated short-circuit and over-current protection. The combination of such features makes these devices particularly flexible and suitable to supply micro-controller in automotive applications.CE63LH46XXQ is available in the TSSOP16 package.
Specification
Sample
Features
- Wide Input Voltage Range from 3V to 40V
- Up to 300mA Load Current
- Standard Fixed Output Voltage Options are 3.3V and 5.0V
- Very Low IQ: 20µA
- Low Dropout: 300mV @ 300mA / VOUT = 3.3V
- Configurable for Window Watchdog or Standard Watchdog
- Open-to-Closed Window Ratio Configurable as 1:1 or 8:1
- Fully Adjustable Watchdog Period (from 10ms to 500ms)
- 10% Accurate Watchdog Period
- Dedicated OFF WD_EN Pin to Control Watchdog ON
- Fully Adjustable Power-Good Threshold and Power-Good Delay Period
- Low Input-Voltage Tracking to UVLO
- Overload Current-Limit Protection and Thermal Shutdown
- Automotive AEC-Q100 Grade 1 Qualified
- Latch-up Performance Exceeds ±100mA per JEDEC JESD78F
- Package : TSSOP16 (4.96 mm × 6.40 mm)
Technical Documentation
| Type | Title | Format | Date |
|---|---|---|---|
| Datasheet | CE63LH46XXQ_Preliminary | 2026-01-20 |
