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BD37A41FVM PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 BD37A41FVM
기능 Voltage Detector
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BD37A41FVM 데이터시트, 핀배열, 회로
Datasheet
Voltage Detectors
Voltage Detector ICs with Watchdog Timer
BD37Axx Series BD87Axx Series BD99A41F
General Description
The BD37A19FVM, BD37A41FVM, BD87A28FVM,
BD87A29FVM, BD87A34FVM, BD87A41FVM and
BD99A41F are watchdog timer reset ICs. It delivers a
high precision detection voltage of ±1.5% and a
super-low current consumption of 5 µA (Typ). It can be
used in a wide range of electronic devices to monitor
power supply voltages and in system operation to
prevent runaway operation.
Features
Built-in Watchdog Timer
Reset delay time can be set with the CT pin's
external capacitance
Watchdog timer monitor time and reset time can be
set with the CTW pin's external capacitance.
Output Circuit Type: N-Channel Open Drain
Key Specifications
RESET Power Supply Voltage Range: 1.0V to 10V
WDT Power Supply Voltage Range: 2.5V to 10V
High Precision Detection Voltage:
(Ta = 25°C)
±1.5%
(Ta = 40°C to 105°C)
±2.5%
Super-Low Current Consumption:
5μA(Typ)
Operating Temperature Range: -40°C to +105°C
Packages
MSOP8
W (Typ) x D (Typ) x H (Max)
2.90mm x 4.00mm x 0.90mm
Applications
All devices using microcontrollers or DSP, including
vehicle equipment, displays, servers, DVD players,
and telephone systems
SOP8
5.00mm x 6.20mm x 1.71mm
Ordering Information
B D3 7 A 1 9 F VM
-
TR
Part Number
37AWDT H Active
87AWDT L Active
99AWDT H Active
Detection Voltage Package
191.9V
282.8V
292.9V
343.4V
414.1V
FVM : MSOP8
F : SOP8
Packaging and forming specification
TR: Embossed tape and reel
E2: Embossed tape and reel
Lineup
Detection voltage (Typ)
1.9V
4.1V
2.8V
2.9V
3.4V
4.1V
4.1V
INH logic
H: Active
H: Active
L: Active
L: Active
L: Active
L: Active
H: Active
Package
MSOP8
Reel of 3000
MSOP8
Reel of 3000
MSOP8
Reel of 3000
MSOP8
Reel of 3000
MSOP8
Reel of 3000
MSOP8
Reel of 3000
SOP8
Reel of 2500
Orderable Part Number
BD37A19FVM-TR
BD37A41FVM-TR
BD87A28FVM-TR
BD87A29FVM-TR
BD87A34FVM-TR
BD87A41FVM-TR
BD99A41F-E2
Product structureSilicon monolithic integrated circuit
.www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product has not designed protection against radioactive rays
1/15
TSZ02201-0G1G0AN00130-1-2
05.Sep.2014 Rev.003




BD37A41FVM pdf, 반도체, 판매, 대치품
BD37Axx Series BD87Axx Series BD99A41F
Electrical Characteristics - continued
(Unless otherwise specified, Ta = −40°C to 105°C, VDD = 5V)
Parameter
Symbol
Min
Limits
Typ
RESET Transmission
Delay Time: Low High
tPLH
3.9
6.9
Delay Circuit Resistance
Rrst
5.8
10.0
Delay Pin Threshold
Voltage
VCTH
VDD×0.3 VDD×0.45
Delay Pin Output Current
ICT
150
Min Operating Voltage
VOPL
1.0
[WDT]
WDT Monitor Time
twH 7.0 10.0
WDT Reset Time
twL 2.4
3.3
Clock Input Pulse Width
CLK High Threshold
Voltage
CLK Low Threshold Voltage
tWCLK
VCLKH
VCLKL
500
VDD × 0.8
0
INH High Threshold Voltage VINHH VDD × 0.8
INH Low Threshold Voltage VINHL
0
CTW Charge Current
ICTWC
0.25
0.50
CTW Discharge Current
ICTWO
0.75
*1 tPLH can be varied by changing the CT capacitance value.
tPLH (s) 0.69 × Rrst (MΩ) × CCT (µF) Rrst = 10 MΩ (Typ)
*2 twH can be varied by changing the CTW capacitance value.
twH (s) (0.5 × CCTW (µF))/ICTWC (µA)
ICTWC = 0.5 µA(Typ)
*3 twL can be varied by changing the CTW capacitance value.
twL (s) (0.5 × CCTW (µF))/ICTWO (µA)
ICTWO = 1.5 µA(Typ)
1.50
Max
10.1
14.5
VDD×0.6
20.0
7.0
VDD
VDD × 0.3
VDD
VDD × 0.3
0.75
2.00
Datasheet
Unit Conditions
ms
CCT = 0.001µF *1
When VDD = VDET ±0.5V
VCT = GND
V RL = 470KΩ
µA VDD = 1.50V, VCT = 0.5V
V VOL 0.4V, RL = 470
ms CCTW = 0.01µF *2
ms CCTW = 0.01µF *3
ns
V
V
V
V
µA VCTW = 0.2V
µA VCTW = 0.8V
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
4/15
TSZ02201-0G1G0AN00130-1-2
05.Sep.2014 Rev.003

4페이지










BD37A41FVM 전자부품, 판매, 대치품
BD37Axx Series BD87Axx Series BD99A41F
Typical Performance Curves – continued
(Unless otherwise specified, Ta = 25°C) : 4.1V Detection
Datasheet
1
0.75
0.5
0.25
0
-40
0 40 80
AMBIENT TEMPERATURE: Ta []
Figure 11. Operating Marginal Voltage
vs Temperature
10
9
8
7
6
5
-40
0
40 80
AMBIENT TEMPERATURE: Ta []
Figure 13. RESET Transmission Delay Time
vs Temperature
13
12
11
10
9
8
-40 0 40 80
AMBIENT TEMPERATURE: Ta []
Figure 12. CT Pin Circuit Resistance
vs Temperature
15
12
9
6
3
0
-40
0 40 80
AMBIENT TEMPERATURE: Ta []
Figure 14. WDT Time vs Temperature
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
7/15
TSZ02201-0G1G0AN00130-1-2
05.Sep.2014 Rev.003

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