RT9553A
RT9553A is High Accuracy Current/Voltage Sensing/Protection manufactured by Richtek.
Description
The RT9553A is designed for over-current detection and over-/under-voltage protection.
It provides users to set over-current threshold by the ILIM pin to pare that senses dropping voltage between CSP pin and CSN pin. Moreover, users can set over-/undervoltage threshold by the OVSET pin/UVSET pin to pare with the CSP voltage. The RT9553A is a available in the WDFN-10L 3x3 package.
Ordering Information
Package Type QW : WDFN-10L 3x3 (W-Type) Lead Plating System G : Green (Halogen Free and Pb Free)
Note : Richtek products are :
Ro HS pliant and patible with the current requirements of IPC/JEDEC J-STD-020.
Suitable for use in Sn Pb or Pb-free soldering processes.
Marking Information
3U= : Product Code
3U=YM DNN
YMDNN : Date Code
Features
- mon Mode Input Range up to 24V
- VCC Operating Current : 200μA
- VCC Shutdown Current : 10μA (under S3/S4/S5)
- Programmable Over-Current Level
- One Shot PROCHOT Signal when OCP
- Pull Low RESET Signal when OVP/UVP
- OVP/UVP with 8% Recover Hysteresis Range
- Programmable OVP/UVP De-glitch Time
Applications
- Notebook
Pin Configuration
(TOP VIEW)
CSP 1 VCC 2 ILIM 3
EN 4 TIMER 5
10 CSN 9 PROCHOT 8 RESET
7 OVSET 11 6 UVSET
WDFN-10L 3x3
Simplified Application Circuit
Input
RSENSE ISENSE
5V Enable
RTIMER
Output
CSN PROCHOT
CSP VCC
RESET...
