Dual Input Dropout Regulator 540mV dropout dual supply mode

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Dual Input Dropout Regulator 540mV dropout dual supply mode

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EZ158X family high performance positive voltage regulators designed applications requiring very dropout voltage amps. Capable supplying 2.8V boards where both 3.3V supplies available, superior dropout characteristics EZ158X result reduced heat dissipation compared regular LDOs. This allows heatsink size reduction elimination. Additionally, EZ158X provides excellent regulation over variations line, load temperature. Remote sense operation allows compensating trace, connector other resistive losses. Outstanding features include very dropout performance rated current, fast transient response, remote sense, internal current limiting, thermal shutdown safe operating area protection output device. EZ158X five terminal adjustable voltage regulator available popular TO-220 TO-263 plastic packages.
Dual Input Dropout Regulator
540mV dropout dual supply mode
(EZ1580) Remote sense operation Fast transient response 0.5% initial accuracy Line regulation typically 0.08% Load regulation typically 0.08% TO-220 TO-263 packages
EZ1580/EZ1581 EZ1582/EZ1583
Applications
Microprocessor supplies Split plane microprocessor supplies Advanced graphics cards Sound cards voltage logic supplies Switching power supply post regulation
Typical Application Circuits
Adjustable Output Parts(3)
3.3V POWER CONTROL EZ158XCX VREF
2.5V
68uF
33uF
10uF
VOUT VREF
GROUND
GROUND
Fixed Output Parts
3.3V POWER CONTROL 33uF GROUND 10uF 68uF GROUND GROUND 47uF 10uF 2.5V POWER 2.5V 3.3V CONTROL 100uF GROUND EZ158XCX-2.5 EZ158XCX-1.5
1.5V
Notes: Capacitor values reference only. Good quality, tantalum aluminum electrolytic capacitors should used. Increasing value output capacitor will improve overall transient response. same voltage input both CTL, then dropout voltage will become 1.3V maximum. small (~0.033µF) capacitor used bypass improve transient response, needed.
Revision January 2001 www.semtech.com
EZ1580/EZ1581 EZ1582/EZ1583
POWER MANAGEMENT Absolute Maximum Ratings
Parameter Power Input Voltage ontrol Input Voltage Power pati Thermal Resi stance Juncti Ambi EZ158X TO-220 EZ158X TO-263 Thermal Resi stance Juncti EZ1580/1 (TO-220 TO-263) EZ1582/3 (TO-220 TO-263) Operati Juncti Temperature Range Storage Temperature Range Lead Temperature (Solderi Sec. Rati (Human Body Model) mbol VPWR VCTL Maximum 13.2 Internally +125 +150 nits
TSTG TLEAD
Electrical Characteristics(7)
Unless specified: VOUT VSNS, VADJ CCTL CPWR COUT 10µF. Values bold apply over full operating temperature range.
Parameter Reference Voltage(1) (Adj. Voltage Versi ons) Output Voltage(1) Voltage Versi ons) Regulati on(1) Load Regulati on(1) VPWR ropout Voltage EZ1581, EZ1582, EZ1583 VPWR ropout Voltage EZ1580
(1)(2) (1)(2)
mbol VREF
Test onditions VPWR 2.05V, VCTL 4.5V, IOUT 10mA VPWR 2.05V, VCTL 4.5V, 10mA IOUT IRATED
1.237 1.231 -1.5
1.250
1.263 1.269
nits
VOUT
VPWR VOUT 0.8V, VCTL 4.5V, IOUT 10mA VPWR VOUT 0.8V, VCTL 4.5V, 10mA IOUT IRATED
VOUT
+1.5
REG(LINE) REG(LOAD)
VPWR (VOUT 0.8V) 5.5V, VCTL 4.5V 12V, IOUT 10mA VPWR VOUT 0.8V, VCTL 4.5V, IOUT 10mA IRATED
VPWR VOUT
VCTL 4.75V, IRATED
0.40 0.50
0.50 0.60
VCTL 4.75V, IRATED
0.54 0.70
0.62 0.80
2001 Semtech Corp.
www.semtech.com
EZ1580/EZ1581 EZ1582/EZ1583
POWER MANAGEMENT Electrical Characteristics (Cont.)(7)
Unless specified: VOUT VSNS, VADJ CCTL CPWR COUT 10µF. Values bold apply over full operating temperature range.
Parameter ontrol urrent EZ1583 EZ1582 EZ1581 EZ1580 Adjust urrent Load urrent(4) urrent EZ1583 EZ1582 EZ1581 EZ1580 pple Rejecti Rati o(5) Thermal Regulati
mbol
Test onditions
nits
ICTL
VPWR VOUT 0.8V, VCTL 4.5V, IOUT IRATED
IADJ IOUT(MIN)
VPWR 2.05V, VCTL 4.5V, IOUT 10mA VPWR VOUT 0.8V, VCTL
VPWR VOUT 0.8V, VCTL 4.5V, DVOUT 100mV
(THERMAL)
VPWR VCTL IRATED
0.002 0.02
NOTES: duty cycle pulse testing with Kelvin connections required. Minimum input output voltage differential required maintain regulation. Current used drive output section. Required maintain regulation. Resistor divider usually utilized minimum load current. VRIPPLE 1VPK-PK, 120Hz. 30ms. IRATED 1.5A EZ1583, EZ1582, EZ1581 EZ1580.
2001 Semtech Corp.
www.semtech.com
EZ1580/EZ1581 EZ1582/EZ1583
POWER MANAGEMENT Configurations
Function
Ordering Information
ice(1) EZ1580C T-X.X EZ1581C T-X.X EZ1582C T-X.X EZ1583C T-X.X EZ1580C M-X.X.TR EZ1581C M-X.X.TR EZ1582C M-X.X.TR EZ1583C M-X.X.TR TO-263, 5-pi ackag TO-220, 5-pi n(2) IOUT
Block Diagram
Notes: Where -X.X denotes voltage options. Available voltages are: 1.5V 2.5V. Leave blank adjustable version (1.3 5.7V). Only available tube packaging. tube contains devices. Only available tape reel packaging. reel contains devices.
Descriptions
mbol SENSE JUST OUTPUT ONTROL Function posi reference voltage devi possi Kelvi sense output voltage load. negati reference voltage devi Transi response mproved addi small bypass capaci from adjust ground. power output devi electri cally connected tab. supply control rcui devi current flow approxi mately output current. devi regulate, voltage must between 1.0V 1.3V greater than output voltage. collector nput power devi EZ1583. ouput load current suppli through devi regulate, voltage must between 0.1V 0.8V greater than output voltage, dependi upon load current.
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POWER
2001 Semtech Corp.
EZ1580/EZ1581 EZ1582/EZ1583
POWER MANAGEMENT Applications Information
EZ158X dropout regulator designed power voltage microcontrollers, graphics ICs, sound cards etc. dropout voltage minimized utilizing separate input voltage, VCTL, which should exceed VOUT least 1.3V. 2.5V (for example) power load derived from 3.3V system supply. Since efficiency linear regulator ratio output input voltage, heat dissipation reduced using 3.3V input (versus one), thereby lowering heatsink cooling costs. lower current applications, heatsink might eliminated altogether. load 2.5V, regulator would dissipate 17.5W when converting from only 5.6W from 3.3V input. Remote Kelvin sensing output voltage achieved connecting sense output load. Remote sensing will reduce errors associated with resistive trace losses between regulator processor.
Outline Drawing TO-220-5
Outline Drawing TO-263-5
2001 Semtech Corp.
www.semtech.com
EZ1580/EZ1581 EZ1582/EZ1583
POWER MANAGEMENT Minimum Land Pattern TO-263-5
Contact Information
Semtech Corporation Power Management Products Division Mitchell Rd., Newbury Park, 91320 Phone: (805)498-2111 (805)498-3804
2001 Semtech Corp.
www.semtech.com

Dual Input Dropout Regulator 540mV dropout dual supply mode

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