BD37A19FVM_13 Datasheet, PDF (1/18 Pages) Rohm – Voltage Detector ICs with Watchdog Timer Built-in watchdog timer

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:
 WDT power supply voltage range:
 High precision detection voltage:
1.0V to 10V
2.5V to 10V
(Ta = 25℃)
1.5%
(Ta = −40℃ to 105℃)
2.5%
 Super-low current consumption:
5μA(Typ.)
 Operating temperature range: -40℃ to +105℃
●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
37A：WDT H Active
87A：WDT L Active
99A：WDT H Active
Detection Voltage Package
19：1.9V
28：2.8V
29：2.9V
34：3.4V
41：4.1V
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 structure：Silicon monolithic integrated circuit ○This product has not designed protection against radioactive rays
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25.Apr.2013 Rev.002