5.0A Remote Sense Voltage Regulator dropout performance: 1.3V max
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EZ1087 high performance positive voltage regulator designed applications requiring dropout performance device remote sense capability provide accurate voltage load, compensating resistive drops connectors, wiring board trace resistance. Additionally, EZ1087 provides excellent regulation over variations line, load temperature. Outstanding features include dropout performance rated current, fast transient response, internal current limiting thermal shutdown protection output device. EZ1087 available popular 5-pin TO-220 package.
5.0A Remote Sense Voltage Regulator
dropout performance: 1.3V max. Kelvin remote sense inputs Full current rating over line temperature Fast transient response total output regulation over line, load temperature Adjust current max. 90µA over temperature Fixed/adjustable output voltage Line regulation typically 0.005% Load regulation typically 0.1% 5-pin TO-220 package
EZ1087
Applications
GTL+ VDDQ Graphics controller core voltage cards VDDQ
Typical Application Circuit
3/TAB
4.75V
INPUT
OUTPUT
VOUT 3.45V
10uF Tant.
EZ1087
10uF Tant. Min.
Notes: needed device from filter capacitors minimum value required stability
Revision December 2000
VOUT VREF
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EZ1087
POWER MANAGEMENT Absolute Maximum Ratings
Parameter Input Supply Voltage Sense fferenti Voltage Sense Voltage Range Power pati Thermal Resi stance Juncti Thermal Resi stance Juncti Ambi Operati Ambi Temperature Range Operati Juncti Temperature Range Storage Temperature Range Lead Temperature (Solderi Sec. Rati (Human Body Model) mbol TSTG TLEAD Maximum Note Internally nits
Note: (VOUT V±SENSE (VOUT 0.4V)
Electrical Characteristics
Unless otherwise specified: 2.75V 7.0V 10mA 5.0A. Values bold apply over full operating ambient temperature range.
Parameter Reference Voltage
mbol VREF
10mA
1.238 1.225
1.250
1.262 1.275
nits
Regulati Load Regulati ropout Voltage(1)(2) urrent Temperature oeffi Adjust urrent Adjust urrent hange Temperature Stabi Load urrent Output se(3) pple Rejecti Rati o(4)
REG(LINE) REG(LOAD) IADJ DIADJ
10mA
0.015
1.30
%/°C
1.10 0.005
0.5A
0.003
2000 Semtech Corp.
www.semtech.com
EZ1087
POWER MANAGEMENT Electrical Characteristics (Cont.)
Unless otherwise specified: 2.75V 7.0V 10mA 5.0A. Values bold apply over full operating ambient temperature range.
Parameter ommon Mode Range Sense ns(5) fferenti Sense Sense urrent
mbol
nits
NOTES: duty cycle pulse testing with Kelvin connections required. DVOUT, DVREF Bandwidth kHz. input ripple (CADJ 25µF). (VOUT V±SENSE VOUT.
Applications Information
Paralleling EZ1087s Higher Output Currents
EZ1087 MASTER INPUT OUTPUT 10uF Tant. EZ1087 SLAVE INPUT OUTPUT 0.1uF 10uF Tant. min. 0.1uF VOUT
Notes: paralleling more than devices, duplicate slave section. Minimum load current devices parallel) 10mA. network used minimum load. A.W.G. solid copper wire). 7.3mW (9.1 A.W.G. solid copper wire). should non-inductive. This easily achieved folding wire back upon itself that fields generated current flowing wire cancel.
2000 Semtech Corp.
www.semtech.com
EZ1087
POWER MANAGEMENT Configuration
EZ1087 Function Sense Output Input Sense
Ordering Information
Z1087C ackag TO-220(1)
Note: Only available tube packaging. tube contains devices.
Output
Block Diagram
2000 Semtech Corp.
www.semtech.com
EZ1087
POWER MANAGEMENT Outline Drawing TO-220
Contact Information
Semtech Corporation Power Management Products Division Mitchell Rd., Newbury Park, 91320 Phone: (805)498-2111 (805)498-3804
2000 Semtech Corp.
www.semtech.com
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