ecoSwitch Advanced Load Management
Description
NCP4545
VIN 14 BLEED 15
EN 16 SR 17 VIN 18
VIN
EN VCC
ecoSwitcht Advanced Load Management
Controlled Load Switch with Low RON
The NCP4545 load switch provides a component and area-reducing solution for efficient power domain switching with inrush current limit via soft start.
It is designed to integrate control and driver functionality with a high performance low on-resistance power MOSFET in a single device.
This cost effective solution is ideal for power management and hot−swap applications requiring low power consumption in a small footprint.
Features
• Advanced Controller with Charge Pump • Integrated N−Channel MOSFET • Soft−Start via Adjustable Slew Rate Control • Low On−Resistance • Input Voltage Range 0.
5 V to 6 V • Low Standby Current • Load Bleed Function • No External Components Required • Enable Pin with CMOS Input Levels • This is a Pb−Free Device
Typical Applications
• Notebook and Tablet Computers • Handheld Electronics • Digital Cameras • Portable Medical Devices • Hard Drives • Peripheral Ports
3 V − 5.
5 V
Controller
0.
5 V − 6 V
Bandgap &
Biases
Charge Pump
RC Oscillator
Delay and Slew Rate
Control
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RON TYP 4.
7 mW 5.
9 mW
VCC 5.
0 V 3.
3 V
VIN 1.
8 V 5.
0 V
IMAX 10.
5 A
MARKING DIAGRAM
1
QFN18, 3x3 CASE 485BF
1 NCP 4545x ALYW G
x = Blank for EN Active−High = L for EN Active−Low
A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package
PIN CONFIGURATION
DELAY 1 VCC 2 GND 3 VIN 4
19: VIN
13 VIN 12 VIN 11 VIN 10 VIN
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information on page 10 of this data sheet.
DELAY SR
GND BLEED
VOUT VIN 5
VOUT 6 VOUT 7 VOUT 8
VIN 9
Load
Figure 1.
Typical Application − No external components included
© Semiconductor Components Industries, LLC, 2016
November, 2016 − Rev.
2
1
Publication Order Number: NCP4545/D
NCP4545
PIN DESCRIPTION Pin 1 2 3
4, 5, 9−14, 18, 19 6−8 15 16
17
Name DELAY
VCC GND VIN VOUT BLEED EN
SR
Function
Turn−on delay adjustmen...
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