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PDF BD5344 Data sheet ( Hoja de datos )

Número de pieza BD5344
Descripción (BD52xx / BD53xx) Free Delay Time Setting CMOS Voltage Detector IC
Fabricantes ROHM Semiconductor 
Logotipo ROHM Semiconductor Logotipo



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No Preview Available ! BD5344 Hoja de datos, Descripción, Manual

Datasheet
Voltage Detector IC Series
Free Delay Time Setting
CMOS Voltage Detector IC Series
BD52xx series BD53xx series
General Description
Rohm's BD52xx and BD53xx series are highly
accurate, low current consumption Voltage Detector
ICs with a capacitor-controlled time delay. The line up
includes BD52xx devices with N channel open drain
output and BD53xx devices with CMOS output. The
devices are available for specific detection voltages
ranging from 2.3V to 6.0V in increments of 0.1V.
Features
Delay Time Controlled by external Capacitor
Two output types (N channel open drain and CMOS
output)
Ultra-low current consumption
Very small and low height package
Package SSOP5 is similar to SOT-23-5(JEDEC)
Typical Application Circuit
VDD1
VDD2
Key Specifications
Detection voltage:
2.3V to 6.0V (Typ.)
0.1V steps
High accuracy detection voltage:
±1.0%
Ultra-low current consumption:
0.95µA (Typ.)
Package
SSOP5:
2.90mm x 2.80mm x 1.25mm
VSOF5:
1.60mm x 1.60mm x 0.60mm
Applications
Circuits using microcontrollers or logic circuits that
require a reset.
VDD1
RL
BD52xx
RST
Micro
controller
CT
CL
(Capacitor for
noise filtering)
Open Drain Output type
BD52xx Series
Connection Diagram CT
SSOP5
N.C.
TOP VIEW
GND
CT
GND
VSOF5
TOP VIEW
BD53xx
RST
Micro
controller
CL
(Capacitor for
noise filtering)
CMOS Output type
BD53xx Series
VDD GND
54
Marking
Lot. No
Pin Descriptions
PIN No.
1
2
Symbol
VOUT
VDD
VOUT VDD GND
SSOP5
Function
Reset Output
Power Supply Voltage
3 GND
GND
4 N.C.
Unconnected Terminal
Capacitor connection terminal for
5 CT
output delay time
Marking 1 2 3
VOUT SUB CT
Lot. No
PIN No.
1
2
Symbol
VOUT
SUB
3 CT
4 GND
5 VDD
VSOF5
Function
Reset Output
Substrate*
Capacitor connection terminal for
output delay time
GND
Power Supply Voltage
*Connect the substrate to GND.
Product structureSilicon monolithic integrated circuit This product is not designed for protection against radioactive rays
.www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
1/13
TSZ02201-0R7R0G300040-1-2
22.May.2013 Rev.006
Free Datasheet http://www.datasheet4u.com/

1 page




BD5344 pdf
BD52xx series BD53xx series
Datasheet
Electrical characteristics (Unless Otherwise Specified Ta=-40 to 105°C) - continued
Parameter
Leak Current
Symbol
Condition
Ileak VDD=VDS=10V
*1
VDD=VDET×1.1, VDET=2.3-2.6V, RL=470k
CT pin Threshold Voltage
VCTH
VDD=VDET×1.1, VDET=2.7-4.2V, RL=470k
VDD=VDET×1.1, VDET=4.3-5.2V, RL=470k
Output Delay Resistance
CT pin Output Current
Detection Voltage
Temperature coefficient
VDD=VDET×1.1, VDET=5.3-6.0V, RL=470k
RCT VDD=VDET×1.1 VCT=0.5V
VCT=0.1V VDD=0.95V
ICT
VCT=0.5V VDD=1.5V
*1
*1
VDET/T Ta=-40°C to 105°C
Hysteresis Voltage
VDET VDD=L H L, RL=470k
VDET (T) : Standard Detection Voltage (2.3V to 6.0V, 0.1V step)
RL: Pull-up resistor to be connected between VOUT and power supply.
Design Guarantee. (Outgoing inspection is not done on all products.)
*1 Guaranteed at Ta=25°C.
Min.
-
VDD
×0.30
VDD
×0.30
VDD
×0.35
VDD
×0.40
5.5
15
150
-
VDET
×0.03
Limit
Typ.
-
VDD
×0.40
VDD
×0.45
VDD
×0.50
VDD
×0.50
9
40
240
±100
VDET
×0.05
Max.
0.1
VDD
×0.60
VDD
×0.60
VDD
×0.60
VDD
×0.60
12.5
-
-
Unit
µA
V
M
µA
±360 ppm/°C
VDET
×0.08
V
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
5/13
TSZ02201-0R7R0G300040-1-2
22.May.2013 Rev.006
Free Datasheet http://www.datasheet4u.com/

5 Page





BD5344 arduino
BD52xx series BD53xx series
Circuit Applications
1) Examples of a common power supply detection reset circuit
Datasheet
VDD1
CT
BD52xx
VDD2
RL
RST
Micro
controller
CL
Noise-filtering
Capacitor
GND
Application examples of BD52xx series (Open Drain
output type) and BD53xx series (CMOS output type) are
shown below.
CASE1: Power supply of the microcontroller (VDD2)
differs from the power supply of the reset detection
(VDD1).
Use an open drain output type (BD52xx) device with a
load resistance RL attached as shown Fig.18.
VDD1
Fig.18 Open Drain Output Type
CT
GND
BD53xx
RST
Micro
controller
CL
Noise-filtering
Capacitor
Fig.19 CMOS Output Type
CASE2: Power supply of the microcontroller (VDD1) is the
same as the power supply of the reset detection (VDD1).
Use a CMOS output type (BD53xx) device or an open
drain output type (BD52xx) device with a pull up resistor
between the output and VDD1.
When a capacitance CL for noise filtering is connected to
the VOUT pin (the reset signal input terminal of the
microcontroller), please take into account the waveform
of the rise and fall of the output voltage (VOUT).
Please refer to Operational Notes for recommendations
on resistor and capacitor values.
2) The following is an example of a circuit application in which an OR connection between two types of detection voltage
resets the microcontroller.
VDD1
VDD2
VDD3
BD52xx
NO.1
CT
BD52xx
NO.2
CT
RL
RST
microcontroller
Fig.20
GND
To reset the microcontroller when many independent power supplies are used in the system, OR connect an open drain
output type (BD52xx series) to the microcontroller’s input with pull-up resistor to the supply voltage of the microcontroller
(VDD3) as shown in Fig. 20. By pulling-up to VDD3, output “High” voltage of micro-controller power supply is possible.
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
11/13
TSZ02201-0R7R0G300040-1-2
22.May.2013 Rev.006
Free Datasheet http://www.datasheet4u.com/

11 Page







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