BU21170MUV Datasheet, PDF (1/33 Pages) Rohm – Capacitive Switch Controller IC

Datasheet
Capacitive Controller ICs
Capacitive Switch Controller IC
BU21170MUV
General Description
BU21170MUV is a capacitive sensor controller for switch
operation.
BU21170MUV has five sensors and provides the simple
switch function by each sensor.
If external noise and temperature drift are detected, the
automatic self-calibration is operated.
Include LED controller with PWM function.
Features
 5 capacitive sensor ports.
 Automatic self-calibration.
 Continued touch detection.
 LED controller with PWM function.
 Inform the detected result of switch operation by
interrupt.
 2-wire serial bus interface.
 Single power supply.
 Built-in Power-On-Reset and Oscillator.
Key Specifications
 Power Supply Voltage Range:
3.0V to 5.5V
 Operating Temperature Range:
-25°C to +85°C
 Operating Current:
3.5mA(Typ without load)
 Scan Rate:
14.8msec(Typ)
Package
VQFN020V4040
W(Typ) x D(Typ) x H(Max)
4.00mm x 4.00mm x 1.00mm
Applications
 Information appliance as printer.
 AV appliance as digital TV and HDD recorder.
 Notebook PC.
VQFN020V4040
Typical Application Circuit
VDD
VDD
VDD
VDD
VDD
15
16
LED4
N.C.
SIN4
SIN3
SIN2
20
1
BU21170MUV
TOP VIEW
11
10
INT
SDA
SCL
TEST
VSS
6
5
VDD
HOST
Recommended DT number : DTC043ZEB
VDD
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays
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TSZ02201-0L5L0F300830-1-2
14.Jul.2016 Rev.002