EZ1580CM-1.3.TR [SEMTECH]
Dual Input Low Dropout Regulator; 双输入低压差稳压器
| 型号： | EZ1580CM-1.3.TR |
| 厂家： | 
SEMTECH CORPORATION |
| 描述： | Dual Input Low Dropout Regulator |
| 文件： | 总6页 (文件大小：161K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
EZ1580/EZ1581
EZ1582/EZ1583
Dual Input Low Dropout Regulator
POWER MANAGEMENT
Description
Features
The EZ158X family of high performance positive voltage
regulators are designed for use in applications requiring
very low dropout voltage at up to 7, 5, 3 and 1.5 amps.
Capable of supplying up to 2.8V on boards where both
5V and 3.3V supplies are available, the superior dropout
characteristics of the EZ158X result in reduced heat
dissipation compared to regular LDOs. This allows for
heatsink size reduction or elimination. Additionally, the
EZ158X provides excellent regulation over variations in
line, load and temperature. Remote sense operation
allows compensating for trace, connector and other
resistive losses.
540mV dropout @ 7A in dual supply mode
(EZ1580)
Remote sense operation
Fast transient response
0.5% initial accuracy
Line regulation typically 0.08%
Load regulation typically 0.08%
5 Pin TO-220 and TO-263 packages
Applications
Microprocessor supplies
Split plane microprocessor supplies
Advanced graphics cards
Sound cards
Low voltage logic supplies
Switching power supply post regulation
Outstanding features include very low dropout
performance at rated current, fast transient response,
remote sense, internal current limiting, thermal shutdown
and safe operating area protection of the output device.
The EZ158X is a five terminal adjustable or fixed 2.5V
voltage regulator available in the popular 5 pin TO-220
and TO-263 plastic packages.
Typical Application Circuits
Adjustable Output Parts(3)
U1
EZ158XCX
OUT
1
VREF
SNS
5
4
3.3V POWER IN
5V CONTROL IN
PWR
CTL
3
2.5V OUT
R2
R1
ADJ
R1
VOUT = VREF 1+
+ IADJ • R2
124
C1
C2
C3
2
33uF
10uF
68uF
R2
124
GROUND
GROUND
Fixed Output Parts
U1
EZ158XCX-2.5
1
SNS
5
4
3.3V POWER IN
5V CONTROL IN
PWR
CTL
3
2.5V OUT
OUT
GND
2
C1
33uF
C2
C3
68uF
10uF
GROUND
GROUND
Notes:
(1) Capacitor values are for reference only. Good quality, low ESR tantalum or aluminum electrolytic capacitors
should be used. Increasing the value of the output capacitor will improve the overall transient response.
(2) If the same voltage is input to both PWR and CTL, then the dropout voltage will become 1.3V maximum.
(3) A small (~0.033µF) capacitor can be used to bypass the ADJ pin to improve transient response, if needed.
Revision: October 29, 2003
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EZ1580/EZ1581
EZ1582/EZ1583
POWER MANAGEMENT
Absolute Maximum Ratings
Parameter
Symbol
Maximum
Units
Power Input Voltage
Control Input Voltage
Power Dissipation
VPWR
VCTL
PD
7
V
V
13.2
Internally Limited
W
Thermal Resistance Junction to Ambient
EZ158X TO-220
50
60
°C/W
°C/W
θJA
EZ158X TO-263
Thermal Resistance Junction to Case
EZ1580/1 (TO-220 & TO-263)
EZ1582/3 (TO-220 & TO-263)
2
3
θJC
Operating Junction Temperature Range
Storage Temperature Range
TJ
0 to +125
-65 to +150
300
°C
°C
°C
kV
TSTG
TLEAD
ESD
Lead Temperature (Soldering) 10 Sec.
ESD Rating (Human Body Model)
2
Electrical Characteristics(7)
Unless specified: VOUT = VSNS, VADJ = 0V, CCTL = CPWR = COUT = 10µF. Values in bold apply over full operating temperature range.
Parameter
Reference Voltage(1)
Symbol
Test Conditions
VPWR = 2.05V, VCTL = 4.5V, IOUT = 10mA
VPWR = 2.05V,
Min
Typ
Max Units
VREF
1.237 1.250 1.263
V
(Adj. Voltage Versions)
1.231
1.269
V
CTL = 4.5V, 10mA < IOUT < IRATED
Output Voltage(1)
(2.5V Version)
VOUT
VPWR = 3.3V, VCTL = 4.5V, IOUT = 10mA
-1
VOUT
+1
%
V
= 3.3V,
-1.5
+1.5
VCTL = 4.5VP,W1R0mA < IOUT < IRATED
VPWR = (VOUT + 0.8V) to 5.5V,
Line Regulation(1)
Load Regulation(1)
REG(LINE)
REG(LOAD)
1.0
1.0
3.0
5.0
mV
mV
V
CTL = 4.5V to 12V, IOUT = 10mA
VPWR = V + 0.8V,
VCTL = 4.5V, IOUTO=UT10mA to IRATED
VCTL = 4.75V, I O = IRATED
VPWR Dropout Voltage (1)(2)
EZ1581, EZ1582,
EZ1583
VPWR - VOUT
0.40
0.50
V
V
0.50
0.60
V
PWR Dropout Voltage (1)(2)
EZ1580
VCTL = 4.75V, I O = IRATED
0.54
0.62
0.70
0.80
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EZ1580/EZ1581
EZ1582/EZ1583
POWER MANAGEMENT
Electrical Characteristics (Cont.)(7)
Unless specified: VOUT = VSNS, VADJ = 0V, CCTL = CPWR = COUT = 10µF. Values in bold apply over full operating temperature range.
Parameter
Symbol
Test Conditions
Min
Typ
Max Units
Control Pin Current (3)
EZ1583
ICTL
VPWR = VOUT + 0.8V, VCTL = 4.5V, IOUT = IRATED
6
120
120
120
120
120
10
mA
EZ1582
30
33
60
50
5
EZ1581
EZ1580
Adjust Pin Current
Minimum Load Current(4)
Current Limit
EZ1583
IADJ
VPWR = 2.05V, VCTL = 4.5V, IOUT = 10mA
VPWR = VOUT + 0.8V, VCTL = 5V
µA
IOUT(MIN)
mA
ICL
VPWR = VOUT + 0.8V, VCTL = 4.5V,
1.6
3.1
5.1
7.1
60
A
EZ1582
∆VOUT = 100mV
EZ1581
EZ1580
Ripple Rejection Ratio(5)
Thermal Regulation (6)
RA
VPWR = VCTL = 5V, I O = IRATED
80
dB
REG (THERMAL)
0.002 0.02
%/W
NOTES:
(1) Low duty cycle pulse testing with Kelvin connections required.
(2) Minimum input to output voltage differential required to maintain 1% regulation.
(3) Current used to drive the output section.
(4) Required to maintain regulation. Resistor divider R1, R2 is usually utilized for minimum load current.
(5) VRIPPLE = 1VPK-PK, 120Hz.
(6) 30ms.
(7) IRATED = 1.5A for EZ1583, 3A for EZ1582, 5A for EZ1581 and 7A for EZ1580.
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EZ1580/EZ1581
EZ1582/EZ1583
POWER MANAGEMENT
Pin Configurations
Ordering Information
Device(1)
Package
I
(A)
OUT
Pin
Function
EZ1580CT-X.X
EZ1581CT-X.X
TO-220, 5-pin(2)
7
1
2
3
4
5
SNS
ADJ
OUT
CTL
5
3
EZ1582CT-X.X
EZ1583CT-X.X
2.5
7
EZ1580CM-X.X.TR
EZ1581CM-X.X.TR
EZ1582CM-X.X.TR
EZ1583CM-X.X.TR
EZ158xCM-X.XTRT(4)
TO-263, 5-pin (3)
PWR
5
Tab is OUT
3
2.5
-
Block Diagram
Notes:
(1) Where -X.X denotes voltage options. Available
voltage is: 2.5V. Leave blank for adjustable version (1.3
to 5.7V).
(2) Only available in tube packaging. A tube contains 50
devices.
(3) Only available in tape and reel packaging. A reel
contains 800 devices.
(4) Lead free product. Where x = 0; 1; 2 or 3.
X.X denotes voltage options.
Pin Descriptions
Pin # Symbol
Pin Name
Pin Function
1
SNS
SENSE
This pin is the positive side of the reference voltage for this device. With this pin it is
possible to Kelvin sense the output voltage at the load.
2
ADJ
ADJUST
This pin is the negative side of the reference voltage for this device. Transient response
can be improved by adding a small bypass capacitor from the adjust pin to ground.
3
4
OUT
CTL
OUTPUT
This is the power output of the device. This pin is electrically connected to the tab.
CONTROL This pin is the supply pin for the control circuitry for the device. The current flow into this
pinwill be approximately1% of the output current. For the device to regulate, the voltage
on this pin must be between 1.0V and 1.3V greater than the output voltage.
5
PWR
POWER
This is the collector input to the power device of the EZ1583. The ouput load current is
supplied through this pin. For the device to regulate, the voltage on this pin must be
between 0.1V and 0.8V greater than the output voltage, depending upon load current.
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EZ1580/EZ1581
EZ1582/EZ1583
POWER MANAGEMENT
Applications Information
The EZ158X is a low dropout regulator designed to power fan costs. For lower current applications, the heatsink
low voltage microcontrollers, graphics ICs, sound cards might be eliminated altogether. For a load of 7A at 2.5V,
etc.
the regulator would dissipate 17.5W when converting from
5V, but only 5.6W from a 3.3V input.
The dropout voltage is minimized by utilizing a separate
input voltage, VCTL, which should exceed VOUT by at least Remote Kelvin sensing of the output voltage can be
1.3V. The 2.5V (for example) power for the load can be achieved by connecting the sense pin to the output at
derived from a 3.3V system supply. Since the efficiency the load. Remote sensing will reduce errors associated
of a linear regulator is the ratio of the output to the input with resistive trace losses between regulator and
voltage, heat dissipation is reduced by using a 3.3V input processor.
(versus a 5V one), thereby lowering heatsink and cooling
Outline Drawing - TO-220-5
Outline Drawing - TO-263-5
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EZ1580/EZ1581
EZ1582/EZ1583
POWER MANAGEMENT
Minimum Land Pattern - TO-263-5
Contact Information
Semtech Corporation
Power Management Products Division
200 Flynn Road, Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
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