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U644B-FP 데이터시트 PDF




TEMIC Semiconductors에서 제조한 전자 부품 U644B-FP은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 U644B-FP 기능
기능 Flasher/ 18-m Shunt/ Extremly Low Current Consumption
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U644B-FP 데이터시트, 핀배열, 회로
U644B
Flasher, 18-mW Shunt, Extremly Low Current Consumption
Description
The bipolar integrated circuit, U644B, is used in relay-
controlled automotive flashers where a high level EMC
is required. Lamp outage is indicated by frequency doub-
ling during hazard warning as well as direction mode.
If the flasher module provides an 4-pin connector the
control pin of U644B (Pin 6) can be used to operate the
IC in an extremly low-current mode.
Features
D Frequency doubling indicates lamp outage
D Frequency independent of temperature and voltage
change
D Relay driver output with high current-carrying
capacity and low saturation voltage
D Minimum lamp load for flasher operation: 1 W
D Very low susceptibility to EMI
D Protection according to ISO TR7637/1 level 4
D Control input (Kl 15)
Ordering Information
Extended Type Number
U644B
U644B-FP
Package
DIP8
SO8
Remarks
Block Diagram
R5
10 kW
26
C1
4
Measuring
comparator K 1
VS – 49 mV
K1
20 kW
20 kW
7
K2 2 kW
Pulse
R1 generator
49 a
WComparator K 2 20 k
K3
5
W49 a
Comparator K 3 20 k
13 kW
GND
3
Relay
8 R3
3.3 kW
30 V
1
R2
220 W
GND
–31
Figure 1. Application circuit as a car flasher with control input
Resistor R1, R2 and R3: 1/4 Watt
R2 for protection against continuous reversed polarity: 1 Watt
R4 18 mW
Shunt
49 a
15
30
12707
TELEFUNKEN Semiconductors
Rev. A2, 25-Feb-97
1 (6)




U644B-FP pdf, 반도체, 판매, 대치품
U644B
Absolute Maximum Ratings (continued)
Parameters
Junction temperature
Ambient temperature range
Storage temperature range
DIP8
SO8
Symbol
Tj
Tamb
Tamb
Tstg
Value
150
–40 to +120
–40 to +105
–55 to +150
Unit
°C
°C
°C
°C
Thermal Resistance
Junction ambient
Parameters
DIP8
SO8
Symbol
RthJA
RthJA
Value
110
160
Unit
K/W
K/W
Electrical Characteristics
Typical values under normal operation in application circuit figure 1, VS (+49, Pin 2) = 12 V.
Reference point ground (–31), Tamb = 25°C unless otherwise specified
Parameters
Test Conditions / Pin
Supply voltage range
Pin 2
Supply current
Dark phase or
stand-by
Pin 2
Supply current
Bright phase
Pin 2
Relay output,
saturation voltage
IO = 300 mA
Pin 3
Relay output,
reverse current
Pin 3
Relay coil resistance
Relay output overvoltage
detection (relay disabled)
Start delay
(first bright phase)
Frequency determining
resistor
Frequency determining
capacitor
Frequency tolerance (normal flashing, basic frequency
f1 not including the tolerance of the external compo-
nents R1 and C1)
Bright period (basic frequency f1)
Bright period (control frequency f2)
Frequency increase (lamp failure)
Control signal threshold Vs = 18 V
Vs = 8 V
Vs = 13.5 V
Resistance between 49a to ground for stand-by
Pin 7
Pin 7
Pin 7
Lamp load
Symbol
VS (+49)
IS
IS
VO
IO
RL
ton
R1
C1
f1
f1
f2
f2
VR3
VR3
VR3
RP
PL
Min.
60
19.0
6.8
–6.5
45
35
2.1 f1
53
40.5
47.5
1
Typ.
8 to 18
5
6
20.2
57
43.6
51
2
Max.
7
10
1.3
0.1
22.5
10
510
47
+ 6.5
55
45
2.4 f1
61
46.6
54.5
5.6
Unit
V
mA
mA
V
mA
W
V
ms
kW
mF
%
%
%
Hz
mV
mV
mV
kW
W
4 (6) TELEFUNKEN Semiconductors
Rev. A2, 25-Feb-97

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관련 데이터시트

부품번호상세설명 및 기능제조사
U644B-FP

Flasher/ 18-m Shunt/ Extremly Low Current Consumption

TEMIC Semiconductors
TEMIC Semiconductors

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