DESCRIPTION
SiP32451, SiP32452 and SiP32453 are n-channel integrated high side load switches that operate from 0.9 V to 2.5 V input voltage range.
SiP32451, SiP32452 and SiP32453 have low input logic control threshold that can interface with low voltage control GPIO directly without extra level shift or driver. There is a pull down at this EN logic control pin.
Turn on time is fast, less than 25 µs typically for input voltage of 1.2 V or higher. SiP32451 and SiP32452 have fast turn off delay time of less than 1 µs while SiP32453 features a guaranteed turn off delay of greater than 30 µs, typically 90 µs.
SiP32451 features an output discharge for fast turn off. SiP32451, SiP32452 and SiP32453 are available in compact wafer level CSP package, WCSP4 0.8 mm x 0.8 mm with 0.4 mm pitch.

FEATURES
• Low input voltage, 0.9 V to 2.5 V
• Low RON, 55 m typical
• Fast turn on time
• Low logic control with hysteresis
• Reverse current blocking when disabled
• Integrated pull down at EN pin
• Output discharge (SiP32451)
• 4 bump WCSP 0.8 mm x 0.8 mm with 0.4 mm pitch package
• Material categorization: For definitions of

APPLICATIONS
• Battery operated devices
• Smart phones
• GPS and PMP
• Computer
• Medical and healthcare equipment
• Industrial and instrument
• Cellular phones and portable media players
• Game console