2557, 25-5700-113, 2557-00A Selling Leads, Datasheet
MFG:benli Package Cooled:SP4652 D/C:GPS
2557, 25-5700-113, 2557-00A Datasheet download
Part Number: 2557
MFG: benli
Package Cooled: SP4652
D/C: GPS
2557, 25-5700-113, 2557-00A
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Info of 2557
Info of 25-5700-113
Info of 2557-00A
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About 2557
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Datasheet: 2557
File Size: 180929 KB
Manufacturer: ALLEGRO [Allegro MicroSystems]
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About 25-21UYC/S530-A2/TR8
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Datasheet: 25-21UYC/S530-A2/TR8
File Size: 126207 KB
Manufacturer: Everlight Electronics
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About 255.062
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Datasheet: 255.062
File Size: 484366 KB
Manufacturer: LITTELFUSE [Littelfuse]
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2557 General Description
The A2557xB, A2557xEB, and A2557xLB have been specifically designed to provide cost-effective solutions to relay-driving applications with up to 300 mA drive current per channel. They may also be used for driving incandescent lamps in applications where turn-on time is not a concern. Each of the four outputs will sink 300 mA in the on state. The outputs have a minimum breakdown voltage of 60 V and a sustaining voltage of 40 V. A low-power Sleep Mode is activated with either ENABLE low or all inputs low. In this mode, the supply current drops to below 100 A.
Over-current protection for each channel has been designed into these devices and is activated at a nominal 500 mA. It protects each output from short circuits with supply voltages up to 32 V. When an output experiences a short circuit, the output current is limited at the 500 mA current clamp. In addition, foldback circuitry decreases the current limit if an excessive voltage is present across the output and assists in keeping the device within its SOA (safe operating area). An exclusive-OR circuit compares the input and output state of each driver. If either a short or open load condition is detected, a single FAULT output is turned on (active low). Similar devices, for operation to 1.3 A, are available as the UDx2547B/EB.
Continuous or multiple overload conditions causing the channel temperature to reach approximately 165°C will result in an additional linear decrease in the output current of the affected driver. If the fault condition is corrected, the output stage will return to its normal saturated condition.
The first character of the part number suffix determines the device operating temperature range. Suffix 'S-' is the standard -20°C to +85°C; suffix 'E-' is -40°C to +85°C; suffix 'K-' is for the industrial temperature range of -40°C to +125°C. Package suffix '-B' devices are 16-pin power DIPs; suffix '-EB' devices are 28-lead power PLCCs; and suffix '-LB' are 16- lead power wide-body SOICs for surface-mount applications. All packages are of batwing construction to provide for maximum package power dissipation.
Over-current protection for each channel has been designed into these devices and is activated at a nominal 500 mA. It protects each output from short circuits with supply voltages up to 32 V. When an output experiences a short circuit, the output current is limited at the 500 mA current clamp. In addition, foldback circuitry decreases the current limit if an excessive voltage is present across the output and assists in keeping the device within its SOA (safe operating area). An exclusive-OR circuit compares the input and output state of each driver. If either a short or open load condition is detected, a single FAULT output is turned on (active low). Similar devices, for operation to 1.3 A, are available as the UDx2547B/EB.
Continuous or multiple overload conditions causing the channel temperature to reach approximately 165°C will result in an additional linear decrease in the output current of the affected driver. If the fault condition is corrected, the output stage will return to its normal saturated condition.
The first character of the part number suffix determines the device operating temperature range. Suffix 'S-' is the standard -20°C to +85°C; suffix 'E-' is -40°C to +85°C; suffix 'K-' is for the industrial temperature range of -40°C to +125°C. Package suffix '-B' devices are 16-pin power DIPs; suffix '-EB' devices are 28-lead power PLCCs; and suffix '-LB' are 16- lead power wide-body SOICs for surface-mount applications. All packages are of batwing construction to provide for maximum package power dissipation.
2557 Maximum Ratings
Output Voltage, VO .............................. 60 V
Over-Current Protected Output Voltage,
VO .....................................................32 V
Output Current, IO ......................... 500 mA*
FAULT Output Voltage, VFLT ............. ....60 V
Logic Supply Voltage, VCC ....................7.0 V
Input Voltage, VI or VOE .......................7.0 V
Package Power Dissipation,
PD ........................................... See Graph
Operating Temperature Range, TA
Suffix 'S-' ........................-20 to +85
Suffix 'E-' ...................... .-40 to +85
Suffix 'K-' ......................-40 to +125
Junction Temperature,
TJ ...................................................+150*
Storage Temperature Range,
TS ................................... ..-55 to +150
Over-Current Protected Output Voltage,
VO .....................................................32 V
Output Current, IO ......................... 500 mA*
FAULT Output Voltage, VFLT ............. ....60 V
Logic Supply Voltage, VCC ....................7.0 V
Input Voltage, VI or VOE .......................7.0 V
Package Power Dissipation,
PD ........................................... See Graph
Operating Temperature Range, TA
Suffix 'S-' ........................-20 to +85
Suffix 'E-' ...................... .-40 to +85
Suffix 'K-' ......................-40 to +125
Junction Temperature,
TJ ...................................................+150*
Storage Temperature Range,
TS ................................... ..-55 to +150
2557 Features
300 mA Output Current per Channel
Independent Over-Current Protection &Thermal Limiting for Each Driver
Output Voltage to 60 V
Output SOA Protection
Fault-Detection Circuitry for Open or Shorted Load
Low Quiescent Current Sleep Mode
Integral Output Flyback/Clamp Diodes
TTL- and 5 V CMOS-Compatible Inputs
Independent Over-Current Protection &Thermal Limiting for Each Driver
Output Voltage to 60 V
Output SOA Protection
Fault-Detection Circuitry for Open or Shorted Load
Low Quiescent Current Sleep Mode
Integral Output Flyback/Clamp Diodes
TTL- and 5 V CMOS-Compatible Inputs
2557 Connection Diagram
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