LM74502, LM74502H Low IQ High Side Switch Controller with Reverse Polarity and Overvoltage Protection

1 Features

3.2-V to 65-V input range (3.9-V start-up)
–65-V input reverse voltage rating
Integrated charge pump to drive
- External back-to-back N-Channel MOSFETs
- External high side switch MOSFET
- External reverse polarity protection MOSFET
Gate drive variants
- LM74502: 60-μA peak gate drive source capacity
- LM74502H: 11-mA peak gate drive source capacity
2.3-A peak gate sink current capacity
Enable pin feature
45-µA typical operating quiescent current (EN/UVLO = High)
1-µA shutdown current (EN/UVLO = Low)
Adjustable overvoltage and undervoltage protection
–40°C to +125°C ambient operating temperature range
Available in 8-pin SOT-23 package 2.90 mm × 1.60 mm