Controller. BCT5511 Datasheet

BCT5511 Datasheet PDF

Part BCT5511
Description Toaster Controller
Feature BCT5511; BCT5511 Toaster Controller BCT5511 Toaster Controller General BCT5511 is designed for toaster appl.
Manufacture BROADCHIP
Datasheet
Download BCT5511 Datasheet




BCT5511
BCT5511
Toaster Controller
BCT5511 Toaster Controller
General
BCT5511 is designed for toaster applications. It
is basically a timer, setting by external RC
components, to stop heating of toaster. Besides
normal timer, it also has defrost and reheat
functions. It is built in oscillation detecting
circuitry. If the oscillation of the IC is not working,
the toaster will not start working. It also has the
function of timing protection, If the IC is switched
on over 300s, The IC will stop the heating for
safety. It provides low cost solution for toaster.
Block Diagram
Features
Operating voltage: 4.0~5.5V
• A few external components
• Zener is built in
• Switch transistor is built in
• Oscillation abnormal detection
Applications
• Toaster
Ordering Information
Part Number
BCT5511PE
BCT5511WE
Package
8 - Pin PDIP
8 - Pin SOP
REV1.0
www.broadchip.com
Copyright © BROADCHIP TECHNOLOGY CO., LTD
1



BCT5511
Pin Assignment
BCT5511
Toaster Controller
Pin Description
Pin Name
Type Description
As input, requires a low pulse to active "Defrost" function. As output, gives a
1 DEFROST I/O
"Defrost" function indication
As input, requires a low pulse to active "Defrost" function. As output, gives a
2 REHEAT I/O
"Defrost" function indication
3 RELAY
O RELAY drive output. High active
4 VCC
P Power supply
5 RX
O Will be high, once an active low pulse appears at Reheat
6 OSC I/O Oscillator input/output, frequency depends on external RC
7 CX
O Shorts to GND once an active when low pulse appears at Defrost
8 GND
P Ground
Recommended Operation Conditions
Symbol
VCC
VIH
VIL
TA
Description
Supply Voltage
Input High Voltage
Input Low Voltage
Operation Temperature
Min
4.0
0.8VCC
0
0
Typ
5.0
-
-
25
Max
5.5
-
0.35VCC
85
Units
V
V
V
REV1.0
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Copyright © BROADCHIP TECHNOLOGY CO., LTD
2



BCT5511
BCT5511
Toaster Controller
Electrical Characteristics
(TA = 0 ~ 85)
Symbol
Parameter
VIL
IOH
IOL
IOH
IOL
I IH
I IL
OSC
Input Low Voltage (DEFROST,
REHEAT)
Output
Source
Current
(DEFROST,
REHEAT)
Output Sink Current (DEFROST,
REHEAT)
Output Source Current (RELAY)
Output Sink Current (RELAY)
Input high leakage current
Input low leakage current
Frequency of normal oscillator
ICC Power supply current
Test Condition
VCC
Condition
4V -
Min
-
4V
VOH=3.0V
-0.25
4V VOL=0.5V 3
4V VOH=2.0V -1
4V
VOL=0.5V
0.2
4V VIH=4.0V
-
4V VIL=0.5V -
4V R7=56k,C2=223 952
VCC=4V,R1=56
4V k,C1=223,all
-
output floating
Typ
-
-
-
-
-
-
-
1024
-
Max
2.0
-
-
-
-
-1
1
1096
100
Units
V
mA
mA
mA
mA
uA
uA
Hz
uA
ABSOLUTE MAXIMUM RATINGS(1)
Supply Voltage VCC................................................................................................................0.5V to + 6V
DC Switch Voltage (VS)................................................................................................0.5V to VCC +0.5V
DC Input Voltage (VIN)............................................................................................................0.5V to + 6V
Storage Temperature Range (TSTG) .............................................................................. 65°C to +150°C
Junction Temperature under Bias (TJ) .......…………………………………………………….…..........+150°C
Junction Lead Temperature (TL) (Soldering, 10 seconds) ............................................................... 260°C
Power Dissipation (PD) @ +85°C .....................................................................................................180mW
Note 1: Absolute Maximum Ratings may cause permanent damage to the device. This is a stress only rating
and operation of the device at these or any other conditions beyond those indicated in the operational sections
of this specification is not implied.
REV1.0
www.broadchip.com
Copyright © BROADCHIP TECHNOLOGY CO., LTD
3







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