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FAN1540 데이터시트 PDF




Fairchild Semiconductor에서 제조한 전자 부품 FAN1540은 전자 산업 및 응용 분야에서
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부품번호 FAN1540 기능
기능 1A/1.3A/ LDO With Low Quiescent Current
제조업체 Fairchild Semiconductor
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FAN1540 데이터시트, 핀배열, 회로
www.fairchildsemi.com
FAN1539/FAN1540
1A/1.3A, LDO With Low Quiescent Current
Features
• Very Low Ground Current (IGND = 1mA)
• Excellent Line Regulation
• Excellent Load Regulation
• Very Low Transient Overshoot
• Stable with low ESR Output Capacitor (ESR = 0m)
• Thermal Shutdown
• Current Limit
• Output Options: 3.3V and 1.8V
Applications
• Disk Drive Circuits
• Desktop Computers
• Laptop, Notebook Computers
• General purpose Three Terminal Regulator
Description
The FAN1539/FAN1540 series of high current LDO (1.0A
and 1.3A) has been developed for portable applications
where low quiescent current is an important requirement.
The device features excellent line and load transient response
which does not exceed 10% of nominal output value for full
operating temperature range even during power ON cycle
and short circuit removal. Internally trimmed, temperature
compensated bandgap reference guarantees 2.5% accuracy
for full range of input voltage, output current and tempera-
ture. Included on the chip are accurate current limit and ther-
mal shutdown protection. Device stability is achieved with
only two external low ESR ceramic capacitors.
The FAN1539/FAN1540 is available in thermally enhanced
3x3mm 6-lead MLP, 5x6mm 8-lead MLP package and
3-lead TO-252 packages. The 5x6mm MLP package version
features separate Kelvin sense pin for high precision applica-
tions.
Block Diagram
VIN
SRART-UP
CIRCUIT
BANDGAP
REFERENCE
ERROR
AMPLIFIER
THERMAL
SHUTDOWN
Notes:
1. No connection for FAN1540MMPX.
2. VSEN available for FAN1540MMPX.
CURRRENT
LIMIT
VOUT
X (Note1)
VSENSE
(Note2)
GND
REV. 1.0.8 3/22/04




FAN1540 pdf, 반도체, 판매, 대치품
FAN1539/FAN1540
PRODUCT SPECIFICATION
Electrical CharacteristicsFAN1539MPX, FAN1540MPX, FAN1540MMPX,
FAN1540DX
Unless otherwise specified, VIN = 4.50V to 7V, Tj = 25°C, IMAX (FAN1539) = 1.0A, IMAX (FAN1540) = 1.3A. Boldface
limits apply over operating junction temperature range of 0°C TJ 125°C.
TEST CONDITIONS
TEST LIMITS
Parameter
Output Voltage
FAN1540
Symbol
VIN
VOUT 4.75V VIN 5.25V
Line Regulation REG(LINE) 3.0V VIN 5.25V
IOUT
5mA IOUT IMAX
5mA IOUT IMAX
Min. Typ. Max.
3.234 3.300 3.366
3.217
3.383
2 15
Units
V
mV
Load Regulation REG(LOAD)
4.75V
FAN1539
5mA IOUT IMAX FAN1540
25 35
30 40
mV
Dropout Voltage
(Note 6)
Current Limit
Min. Output
Current for
regulation
(∆VOUT 3%)
Temperature
Stability
RMS Output
Noise
(Note 7)
Ripple Rejection
Ratio (Note 8)
VD
IS
IOMIN
TS
VN
RA
Transient
Response
Change of VOUT
with step load
change (Note 9)
----V-----O---U----T-
IOUT
5.5V
5V
5V
IOUT = IMAX
IOUT = 5mA
IOUT = IMAX
IOUT = 10mA
IOUT = 100mA
IOUT = IMAX
1mA to IMAX
tr 1µS
IMAX to 1mA
tf 1µS
Transient
Response
Change of VOUT
with application
of VIN
(Note 9)
-----V----O---U----T-
VIN
0 to 5V Step Input
tr 1µS
10% to 90%
1mA IOUT IMAX
0.9 1.2
3.3
0
V
A
mA
0.3
0.003
%
%VOUT
65 75
dB
63 73
45 57
2.0 10
(un-
der-
shoot
or
over-
shoot
of
VOUT)
5.0 10
(un-
der-
shoot
or
over-
shoot
of
VOUT)
%
%
4 REV. 1.0.8 3/22/04

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FAN1540 전자부품, 판매, 대치품
PRODUCT SPECIFICATION
FAN1539/FAN1540
Electrical CharacteristicsFAN1540D18X (Continued)
Unless otherwise specified, VIN = 3.135V to 3.465V, TA= 25°C. Boldface limits apply over operating junction temperature
range of 0°C TJ 125°C.
Parameter
Transient
Response
Short circuit
Removal
Response
(Note 9)
Symbol
-----V----O---U----T-
VIN
@IOUT
= short
TEST CONDITIONS
VIN
3.3V
IOUT
IOUT = short
to
IOUT = 10mA
TEST LIMITS
Min. Typ. Max. Units
3.0 10 %
(over-
shoot
or un-
der-
shoot
of VO)
Quiescent
Current
Quiescent
Current
Thermal
Shutdown
Thermal
Hysteresis
IGND
IGND
TjSD
THYST
3.3V
3.3V
IOUT = 0mA
2mA IOUT IMAX
1.0 2.0 mA
1.0 2.0 mA
160 °C
10 °C
Notes:
6. Dropout voltage is defined as the input to output differential voltage at which the output voltage drops 1% below the nominal
value measured at VIN = 3.3V.
7. Measured within 10Hz to 10kHz bandwidth.
8. Measured at DC, specified at 120 Hz.
9. CIN = 22µF, COUT = 10µF. Both capacitors are low ESR X7R type.
Test Circuit
VIN
CIN
22µF
IN
DUT OUT
GND
10µF
VOUT
COUT
Notes: 1. Use low ESR capacitors.
2. CIN should be placed as close to VIN as possible.
REV. 1.0.8 3/22/04
7

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관련 데이터시트

부품번호상세설명 및 기능제조사
FAN1540

1A/1.3A/ LDO With Low Quiescent Current

Fairchild Semiconductor
Fairchild Semiconductor

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