Dropout Positive Voltage Regulators dropout performance: 1.3V max

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Dropout Positive Voltage Regulators dropout performance: 1.3V max

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EZ1584 high performance positive voltage regulator designed applications requiring dropout performance Additionally, EZ1584 series 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. EZ1584 excellent choice powering microprocessor systems. Using eliminates MOSFETs inductors, saving both space cost. also provides better transient response ripple. variety options available maximum flexibility: EZ1584C intended commercial applications both fixed adjustable voltage options; EZ1584I intended industrial applications 3.3V fixed adjustable option. devices available popular TO-220 package.
Dropout Positive Voltage Regulators
dropout performance: 1.3V max. EZ1584C Full current rating over line temperature Fast transient response total output regulation over line, load
1.4V max. EZ1584I
EZ1584C EZ1584I
temperature Adjust current 90µA over temperature Fixed/adjustable output voltage Line regulation typically 0.015% Load regulation typically 0.05% Industrial temperature range (EZ1584I) TO-220 package
Applications
Memory supply Graphics core supply Other 2.5V 3.6V microprocessor supplies voltage logic supplies Battery-powered circuitry Post regulator switching supply Telecom supplies Industrial supplies
Typical Application Circuit
Fixed Voltage Regulator
4.75V
EZ1584-3.3
VOUT 3.3V
10uF Tant.
10uF Tant. Min.
Adjustable Voltage Regulator
4.75V EZ1584 VOUT 3.45V
10uF Tant.
Ohm,
10uF Tant.
Notes: needed device from filter capacitors minimum value required stability
Revision December 2000
Ohm,
VOUT VREF
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EZ1584C EZ1584I
POWER MANAGEMENT Absolute Maximum Ratings
Parameter Input Supply Voltage Power Dissipation Thermal Resistance Junction Case Thermal Resistance Junction Ambient Operating Ambient Temperature Range EZ1584C EZ1584I Operating Junction Temperature Range EZ1584C EZ1584I Storage Temperature Range Lead Temperature (Soldering) Sec. Rating (Human Body Model) Symbol Maximum Internally Limited Units °C/W °C/W
TSTG TLEAD
Electrical Characteristics
Unless otherwise specified: Adj. 2.75V 7.0V Adj. 10mA 7.0A; Fixed 4.75 7.0V Fixed 7.0A. Values bold apply over full operating ambient temperature range.
Parameter Output Voltage
Symbol
0.99lVOl 0.98lVOl
1.01lVOl 1.02lVOl
Units
EZ1584C-X.X, EZ1584I-3.3 Reference Voltage
VREF
10mA
1.238 1.225
1.250
1.262 1.275
EZ1584C, EZ1584I Line Regulation Load Regulation Dropout Voltage(1)(2) EZ1584C, EZ1584C-X.X EZ1584I, EZ1584I-3.3 Current Limit REG(LINE) REG(LOAD) 10mA
0.015 0.05 1.20 1.20
1.30 1.40
2000 Semtech Corp.
www.semtech.com
EZ1584C EZ1584I
POWER MANAGEMENT Electrical Characteristics (Cont.)
Unless otherwise specified: Adj. 2.75V 7.0V Adj. 10mA 7.0A; Fixed 4.75 7.0V Fixed 7.0A. Values bold apply over full operating ambient temperature range.
Parameter Quiescent Current Fixed Voltage Versions Temperature Coefficient Adjust Current Adjust Current Change Temperature Stability Minimum Load Current Voltage Versions Output Noise(3) Ripple Rejection Ratio(4)
Symbol IADJ IADJ
0.005
Units %/°C
0.5A
0.003
NOTES: duty cycle pulse testing with Kelvin connections required. VOUT, VREF Bandwidth kHz. input ripple (CADJ 25µF).
2000 Semtech Corp.
www.semtech.com
EZ1584C EZ1584I
POWER MANAGEMENT Configuration Ordering Information
Device(1)(2) EZ1584CT-X.X EZ1584IT-X.X ackag TO-220(3)
Notes: Where denotes voltage options. Available voltages are: 1.5V, 2.5V, 3.3V 3.45V EZ1584C 3.3V only EZ1584I. Leave blank adjustable version (1.3V 5.7V). Contact factory additional voltage options. Where denote Commercial (0°C 70°C) Industrial (-40°C 85°C) ambient temperature ranges. Only available tube packaging. tube contains devices.
Descriptions
Name ADJUST Function This negative side reference voltage adjustable devices. Transient response improved adding small bypass capacitor from adjust ground. This bottom internal resistor feedback chain fixed output voltage parts, should connected ground. This power output device electrically connected TAB. This input supply both control circuitry pass device.
GROUND OUTPUT INPUT
Block Diagram
2000 Semtech Corp.
www.semtech.com
EZ1584C EZ1584I
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

Dropout Positive Voltage Regulators dropout performance: 1.3V max

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