|
Details, datasheet, quote on part number:QB104M3
| |
| Part: | QB104M3 |
| Category: | Power Management => AC-DC Controllers/Converters => High & Low Side Switch |
| Description: | Qbar(r) Normally-closed Switch |
| Company: | BitParts Inc. |
| Datasheet: | Download QB104M3 datasheet File size : 38 kB |
| Request For quote: | Find where to buy QB104M3
|
| |
Datasheet text preview:
QB104 M3
INC.
QBAR ® NORMALLY-CLOSED SWITCH
DESCRIPTION
QBAR® ICs provide a 3-terminal semiconductor switch that functions as: · a solid-state normally-closed switch · a non-inverting digital transistor · a solid-state replacement for a normally-closed, non-isolating relay. QBAR ICs do not require a separate power supply lead. This makes possible: · simplified control wiring · replacement of normally-closed D.C. relays with highly reliable solid-state devices · improved fail-safe performance in the event of lost control power, severed or shorted control wires.
®
3 1 2
175 mA 20 VOLTS SOT-23 package (TO-236)
PIN
1 INPUT 2 OUTPUT 3 GND
QBAR SWITCH SYMBOL
OUTPUT
FUNCTIONAL SCHEMATIC
OUTPUT
FUNCTION TABLE
INPUT HI SWITCH STATE
(OUTPUT-TO-GND)
INPUT INPUT (CMOS or TTL)
OFF ON ON
LO OPEN
GND
TYPICAL APPLICATIONS
ALARM SWITCH
+20V +5V REGULATOR Warning indicator, cooling fan, brake actuator
PROTECTION OF FRAGILE OR TRIGGER DEVICES
+12V
POWER SUPPLY EFFICIENCY BOOST
Vout
+5V REGULATOR I to other logic
DC Power Supply (up to 20V)
+ Cout
Bleeder Resistor
Logic
LOGIC Status Normally HI
Status Inputs, normally high Status Normally HI
A QBAR switch activates an alarm over a large range of system failure conditions: · system failure indicated by a LO on the status output · status conductor cut · status conductor shorted to ground · loss of +5V supply Any of these conditions will cause the QBAR switch to turn ON and power the alarm.
A QBAR switch protects the load from being driven by false signals when all status indicators are not OK. Damage to fragile loads such as laser diodes, or erroneous firing of detonators can be avoided with a QBAR switch. It shunts drive current I around the load when any Status Gate input goes LO, when +5V power is lost, or when the conductor from the Status Gate output to the QBAR switch input is cut or shorted to ground.
Increase your power supply efficiency by using a QBAR switch to lower the p a r a s i t i c current drain through the bleeder resistor during normal supply operation.
QB104 M3
ABSOLUTE MAXIMUM RATINGS
Voltage, output to ground . . . . . . . . . . . . . . . . . . . . . 24 V Voltage, input to ground . . . . . . . . . . . . . . . . -20V to +6 V Ambient Operating Temperature Range . . . 0°C to 70°C Storage Temperature Range . . . . . . . . . . -55°C to 150°C Output current, continuous . . . . . . . . . . . . . . . . . . 175 mA (OK to exceed +6V if Input Current is limited to 2mA)
ELECTRICAL SPECIFICATIONS (Over full operating temperature range, unless noted)
PARAMETER OFF Characteristics Output Breakdown Voltage Output OFF Current Input HIGH Logic Threshold Input HIGH Input Current V input = 2.4 V 0 V input 2.4 V I output 750 µA V input 2.4 V V output = 20 V 20 +300 1.7 +750 2.4 +60 V µA V µA CONDITIONS MIN TYP MAX UNITS
ON Characteristics Output ON Voltage Input LOW Logic Threshold Input LOW Input Current Input Logic Threshold Hysteresis SWITCHING Characteristics Turn-on Time, Turn-off Time V in0 = 0.8 V V in1 = 2.4 V V cc = 12 V I out = 50 mA 2 5 µs -6 V V input 0.8 V I output = 150 mA 0.8 1.3 1.4 +20 1.8 V V µA V
V input 0.8 V
-20 0.1
Notes:
1. When not connected, the Input Terminal floats LOW, putting the QBAR® switch in the ON state. Nevertheless, for minimum noise susceptibility, inputs should be connected to valid logic levels. 2. QBAR switches are protected by U.S. Patent # 5,134,323 and foreign patents.
Available Options: Package Max Current Suffix Order No.
SOT-23 . . . . 175mA . . . . . . . . . M3 . . . . . QB104M3 TO-92 . . . . . 175mA . . . . . . . . . Z . . . . . . . . . QB104Z TO-220 . . . . 3A . . . . . . . . . . . . T . . . . . . . . . QB210T Contact BitParts, Inc. for other package options.
INC.
BITPARTS, INC. reserves the right to make changes without further notice to these components to improve reliability, function or design. BITPARTS, INC. assumes no liability arising from the use of these components. The products of BITPARTS, INC. are not intended for use in life support appliances,devices, or systems. Use of a BITPARTS, INC. product in such applications without the written consent of the President of BITPARTS, INC. is prohibited. QBAR is a registered trademark of BitParts, Inc. © Copyright 1999 BitParts, Inc. All rights reserved. Ref: QB104M3--2/99 Printed in Canada
BitParts, Inc. 56 Union Avenue, PO Box 617, Sudbury MA 01776 Tel: (978) 443-5720 Fax: (978) 443-5744 bitparts@bitpartsinc.com www.bitpartsinc.com
|
|
