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9WDV3501BGLFT

Description
Power Supply Management Circuit, Fixed, 1 Channel, PDSO20, 4.40 MM, 0.65 MM PITCH, ROHS COMPLIANT, MO-153, TSSOP-20
CategoryPower/power management    The power supply circuit   
File Size101KB,9 Pages
ManufacturerIDT (Integrated Device Technology)
Environmental Compliance
Download Datasheet Parametric Compare View All

9WDV3501BGLFT Overview

Power Supply Management Circuit, Fixed, 1 Channel, PDSO20, 4.40 MM, 0.65 MM PITCH, ROHS COMPLIANT, MO-153, TSSOP-20

9WDV3501BGLFT Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerIDT (Integrated Device Technology)
Parts packaging codeTSSOP
package instructionTSSOP, TSSOP20,.25
Contacts20
Reach Compliance Codeunknown
ECCN codeEAR99
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 codeR-PDSO-G20
JESD-609 codee3
length6.5 mm
Humidity sensitivity level1
Number of channels5
Number of functions1
Number of terminals20
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Encapsulate equivalent codeTSSOP20,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
power supply3.3 V
Certification statusNot Qualified
Maximum seat height1.2 mm
Maximum supply current (Isup)2.5 mA
Maximum supply voltage (Vsup)3.63 V
Minimum supply voltage (Vsup)2.97 V
Nominal supply voltage (Vsup)3.3 V
surface mountYES
Temperature levelCOMMERCIAL
Terminal surfaceMatte Tin (Sn) - annealed
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Threshold voltage nominal+1
Maximum time at peak reflow temperature30
width4.4 mm
Base Number Matches1
Advance Information
DATASHEET
VOLTAGE MONITOR/WATCHDOG TIMER CIRCUIT
General Description:
The 9WDV3501 contains 5 voltage monitoring (VMON)
comparators and a watchdog timer circuit. The external voltage
monitor inputs have a reset threshold of approximately 1.0V.
Various power supplies can easily be monitored with these
inputs by use of a simple resistor ladder to divide the supply rail
down to 1.0V.
There are two RESET# outputs. RESET0# is typically
connected to a microprocessor, while RESET1# is typically
connected to peripheral components.
If any of the VMON inputs drops outside the desired operating
range, both RESET# outputs will be asserted simultaneously.
They will stay low as long as VMON is below the threshold.
After VMON rises above the threshold, RESET0# will begin its
timeout count down and return high after the count down
expires. The count down period depends on the value on the
RST0_DLY(1:0) pins. The minimum value is 50ms and the
maximum value is 300ms. When RESET0# is de-asserted, the
RESET1# output will continue to be asserted for an additional
count down period.
ICS9WDV3501B
The RESET1# count down period is set by the RST1_DLY(1:0)
inputs. The
additional
delay can range from 50ms to 300ms.
This additional reset is designed to hold the peripheral circuits
in reset after the microprocessor has been released from reset.
The VMON circuitry can continue to operate until VDD drops
below 2.3V.
The watchdog timer monitors transitions on the WDI input. This
input is usually driven by a GPIO line from a microprocessor and
is used to detect when the CPU has entered an infinite loop. If a
transition on the WDI input is not detected within the watchdog
time out period, both RESET# outputs will be asserted and will
be as described in the previous paragraph. The watchdog timer
is restarted when RESET1# goes inactive. The watchdog time
out period is selectable using the WTB(1:0) inputs. The
watchdog can be disabled by pulling the WDI_EN pin low.
The 9WDV3501 incorporates a precision RC oscillator that
utilized an external trimming resistor for maximum accuracy.
The recommend value for this resistor is 30KΩ.
The 9WDV3501 is available in both commercial and industrial
temperature ranges. It is available in a 20-pin QFN or a 20-pin
TSSOP package.
Functional Block Diagram
VMON0
+
-
Features:
5 Precision Voltage Monitors:
Watchdog Timer
Selectable Watchdog and Reset Timing
Two Active Low reset outputs
Precision Timebase with external trim resistor
VMON1
+
-
VMON2
+
-
VMON3
+
-
VMON4
+
-
RST0_DLY(1:0)
1.00V
Bandgap
Reset Timer 0
50 to 300 ms
nominal
Logic
RESET0#
WTB(1:0)
WatchDog
Timer
WDI
Watchdog
Edge Detector
Reset Timer 1
50 to 300 ms
nominal
RESET1#
RST1_DLY(1:0)
Master clock
RP
Osc
IDT
TM
/ICS
TM
Voltage Monitor/Watchdog Timer Circuit
1468—05/30/08
1

9WDV3501BGLFT Related Products

9WDV3501BGLFT 9WDV3501BKLFT
Description Power Supply Management Circuit, Fixed, 1 Channel, PDSO20, 4.40 MM, 0.65 MM PITCH, ROHS COMPLIANT, MO-153, TSSOP-20 Power Supply Management Circuit, Fixed, 1 Channel, PQCC14, ROHS COMPLIANT, QFN-14
Is it Rohs certified? conform to conform to
Maker IDT (Integrated Device Technology) IDT (Integrated Device Technology)
Parts packaging code TSSOP QFN
package instruction TSSOP, TSSOP20,.25 HVQCCN, LCC20,.16SQ,20
Contacts 20 14
Reach Compliance Code unknown unknown
ECCN code EAR99 EAR99
Adjustable threshold NO NO
Analog Integrated Circuits - Other Types POWER SUPPLY MANAGEMENT CIRCUIT POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 code R-PDSO-G20 S-PQCC-N14
JESD-609 code e3 e3
length 6.5 mm 4 mm
Humidity sensitivity level 1 1
Number of channels 5 5
Number of functions 1 1
Number of terminals 20 14
Maximum operating temperature 70 °C 70 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code TSSOP HVQCCN
Encapsulate equivalent code TSSOP20,.25 LCC20,.16SQ,20
Package shape RECTANGULAR SQUARE
Package form SMALL OUTLINE, THIN PROFILE, SHRINK PITCH CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius) 260 260
power supply 3.3 V 3.3 V
Certification status Not Qualified Not Qualified
Maximum seat height 1.2 mm 1 mm
Maximum supply current (Isup) 2.5 mA 2.5 mA
Maximum supply voltage (Vsup) 3.63 V 3.63 V
Minimum supply voltage (Vsup) 2.97 V 2.97 V
Nominal supply voltage (Vsup) 3.3 V 3.3 V
surface mount YES YES
Temperature level COMMERCIAL COMMERCIAL
Terminal surface Matte Tin (Sn) - annealed Matte Tin (Sn) - annealed
Terminal form GULL WING NO LEAD
Terminal pitch 0.65 mm 0.5 mm
Terminal location DUAL QUAD
Threshold voltage nominal +1 +1
Maximum time at peak reflow temperature 30 30
width 4.4 mm 4 mm
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