Positive Voltage Regulator dropout voltage: 1.3V max. EZ1085C, Fu
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EZ1085 series high performance positive voltage regulators designed applications requiring dropout performance Additionally, EZ1085 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.
Positive Voltage Regulator
dropout voltage: 1.3V max. EZ1085C, Full current rating over line temperature Fast transient response total output regulation over line, load
1.4V max. EZ1085I, 1.45V max. EZ1085BC
EZ1085BC, EZ1085C EZ1085I
variety options available maximum flexibility: EZ1085C both fixed adjustable voltage
options designed commercial applications; EZ1085BC adjustable only cost sensitive commercial applications; EZ1085I adjustable only industrial applications.
temperature (±2.4% EZ1085BC) Adjust current 90µA over temperature Fixed/adjustable output voltage (EZ1085C) Line regulation typically 0.015% Load regulation typically 0.05% Industrial temperature range (EZ1085I) TO-220 TO-263 packages
Applications
Printer plotter supplies Instrumentation Medical equipment Microcontroller systems Telecommunication systems Motherboards Switching supply post regulation
devices available popular TO-220 TO-263 packages.
Typical Application Circuit
Fixed Voltage Regulator
4.75V
EZ1085C-3.3
VOUT 3.3V
10uF Tant.
10uF Tant. Min.
Adjustable Voltage Regulator
4.75V EZ1085 VOUT 3.45V
10uF Tant.
Ohm,
10uF Tant.
Notes: needed device from filter capacitors minimum value required stability
Ohm,
VOUT VREF
Revision December 2000
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EZ1085BC, EZ1085C EZ1085I
POWER MANAGEMENT Absolute Maximum Ratings
Parameter Input Supply Voltage Power Dissipation Thermal Resistance Junction Case TO-220 TO-263 Thermal Resistance Junction Ambient TO-220 TO-263 Operating Ambient Temperature Range EZ1085BC, EZ1085C EZ1085I Operating Junction Temperature Range EZ1085BC, EZ1085C EZ1085I 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 Fixed 4.75 7.0V Fixed Values bold apply over full operating ambient temperature range.
Parameter Output Voltage EZ1085C-X.X Reference Voltage
Symbol
0.99lVOl 0.98lVOl
1.01lVOl 1.02lVOl
Units
VREF
10mA
1.238 1.225
1.250
1.262 1.275
EZ1085C, EZ1085I Reference Voltage EZ1085BC Line Regulation Load Regulation Dropout Voltage(1)(2) EZ1085C, EZ1085C-X.X EZ1085I EZ1085BC Current Limit
2000 Semtech Corp.
10mA
1.233 1.220
1.250
1.267 1.280
REG(LINE) REG(LOAD)
10mA
0.045 0.15
1.30 1.40 1.45
1.20 1.20 1.20
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EZ1085BC, EZ1085C EZ1085I
POWER MANAGEMENT Electrical Characteristics (Cont)
Unless otherwise specified: Adj. 2.75V 7.0V Adj. 10mA Fixed 4.75 7.0V Fixed Values bold apply over full operating ambient temperature range.
Parameter Quiescent Current Fixed Voltage Version 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.
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EZ1085BC, EZ1085C EZ1085I
POWER MANAGEMENT Configurations Ordering Information
Device(1)(2) EZ1085BCM.TR EZ1085CM-X.X.TR EZ1085IM.TR EZ1085BCT EZ1085CT-X.X EZ1085IT ackag TO-263(3)
TO-220(4)
Descriptions
Name ADJUST Function
Notes: Where denotes voltage options (EZ1085C only). Available voltages are: 2.5V, 3.3V 3.45V. Leave blank adjustable version (1.3 5.7V). Contact factory additional voltage options. Where denote Commercial (0°C 70°C) Industrial (-40°C 85°C) ambient temperature ranges. Only available tape reel packaging. reel contains devices. Only available tube packaging. tube contains devices.
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.
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EZ1085BC, EZ1085C EZ1085I
POWER MANAGEMENT Outline Drawing TO-220
Outline Drawing T0-263
2000 Semtech Corp.
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EZ1085BC, EZ1085C EZ1085I
POWER MANAGEMENT Land Pattern TO-263
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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