EUP7559-1.8/3.3JIR1 [EUTECH]
Regulator;
| 型号： | EUP7559-1.8/3.3JIR1 |
| 厂家： | 
EUTECH MICROELECTRONICS INC |
| 描述： | Regulator |
| 文件： | 总10页 (文件大小：587K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
EUP7559
Low Noise Dual 300mA LDO
with Independent Shutdown
DESCRIPTION
FEATURES
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Input Voltage Range: 2.5V to 6V
300mA Output Current per LDO
Low Dropout Voltage of 55mV@100mA
Low Quiescent Current of 115µA per LDO
High PSRR 70dB at 1kHz
Low Output Noise
Thermal Shutdown Protection
Current Limit Protection
Separate Enable pin per LDO
Stable with Ceramic Output Capacitor
1.5V to 3.3V Pre-set Output
3mm×3mm TDFN-8 Package
RoHS Compliant and 100% Lead (Pb)-Free
The EUP7559 is a dual low dropout linear regulator
capable of sourcing 300mA current per regulator.
The EUP7559 is stable with small ceramic output
capacitors. The performance of EUP7559 is optimized
for battery power systems to deliver low noise, low
dropout voltage, low quiescent current and excellent
line and load transient response.
The EUP7559 is available in fixed output voltages in
the 8-pin 3mm×3mm TDFN leadless package.
APPLICATIONS
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Cellular Phones
PDAs and Palmtop Computers
Wireless LAN Cards
Hand-Held Instruments
Typical Application
DS7559 Ver 1.0 May. 2007
1
EUP7559
Block Diagram
DS7559 Ver 1.0 May. 2007
2
EUP7559
Pin Configurations
Package Type
Pin Configurations
TDFN-8
Pin Description
PIN
Pin
DESCRIPTION
LDO A Regulator Input. Connect to INB. Input voltage can range from 2.5V to 6V. Bypass
INA with a ceramic capacitor to GND.
INA
1
Shutdown A Input. A logic-low on ENA shuts down regulator A. If ENA and ENB are both
low, both regulators and the internal reference are off and the supply current is reduced to
10nA (typ). If either ENA or ENB is a logic high, the internal reference is on. Connect
ENA to INA for always-on operation of regulator A.
ENA
ENB
2
3
Shutdown B Input. A logic-low on ENB shuts down regulator B. If ENA and ENB are both
low, both regulators and the internal reference are off and the supply current is reduced to
10nA (typ). If either ENA or ENB is a logic high, the internal reference is on. Connect
ENB to INB for always-on operation of regulator B.
LDO B Regulator Input. Connect to INA. Input voltage can range from 2.5V to 6V. Bypass
INB with a ceramic capacitor to GND.
Regulator B Output. OUTB can source up to 300mA continuous current. Bypass OUTB
with a ceramic capacitor to GND. During shutdown, OUTB is internally discharged to
GND through a 300Ω. resistor.
INB
4
5
OUTB
GND
BP
6
7
Ground.
Reference Noise Bypass. Bypass BP with a low-leakage 0.01µF ceramic capacitor for
reduced noise at both outputs.
Regulator A Output. OUTA can source up to 300mA continuous current. Bypass OUTA
with a ceramic capacitor to GND. During shutdown, OUTA is internally discharged to
GND through a 300Ω. resistor.
OUTA
8
DS7559 Ver 1.0 May. 2007
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EUP7559
Ordering Information
Order Number
Package Type
TDFN-8
TDFN-8
TDFN-8
TDFN-8
TDFN-8
TDFN-8
TDFN-8
TDFN-8
TDFN-8
TDFN-8
TDFN-8
TDFN-8
Marking
Operating Temperature range
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
-40 °C to 125°C
XXXXX
7559-V
XXXXX
7559-C
XXXXX
7559-A
XXXXX
7559-H
XXXXX
7559-a
XXXXX
7559-D
XXXXX
7559-b
XXXXX
7559-X
XXXXX
7559-G
XXXXX
7559-Z
XXXXX
7559-W
XXXXX
7559-Y
EUP7559-1.5/1.5JIR1
EUP7559-1.5/2.8JIR1
EUP7559-1.8/2.8JIR1
EUP7559-1.8/3.3JIR1
EUP7559-1.85/1.5JIR1
EUP7559-2.5/2.8JIR1
EUP7559-2.85/1.8JIR1
EUP7559-2.85/1.85JIR1
EUP7559-2.85/2.85JIR1
EUP7559-3.15/2.8JIR1
EUP7559-3.3/2.85JIR1
EUP7559-3.3/3.0JIR1
EUP7559 □□□/□□□ □ □ □ □
Lead Free Code
1: Lead Free 0: Lead
Packing
R: Tape & Reel
Operating temperature range
I: Industry Standard
Package Type
J: TDFN
Output Voltage Option
DS7559 Ver 1.0 May. 2007
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EUP7559
Absolute Maximum Ratings
VIN,VEN ------------------------------------------------------------------------------- -0.3V to 6.5V
Power Dissipation (PD) ------------------------------------------------------ Internally Limited
Junction Temperature ------------------------------------------------------ -40°C to +125°C
Storage Temperature ------------------------------------------------------ -65°C to +150°C
Lead Temp ------------------------------------------------------------------------------
260°C
Operating Ratings
VIN --------------------------------------------------------------------------------------- 2.5 to 6V
VEN -------------------------------------------------------------------------------------- 0V to 6V
Junction Temperature ----------------------------------------------------------------
150°C
Thermal Resistance θJA(TDFN-8) --------------------------------------------------- 60°C/W
Electrical Characteristics
VIN=3.8V, VENA=VENB=VIN, Io=10mA. CIN=COUT=2.2uF, TA= -40°C ~85°C.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Input Voltage Range
VIN
2.5
6
V
Undervoltage-Lockout
VUVLO
Vo
VIN Rising , hysteresis is 40mV(typ)
2.15
2.3
2.45
V
Threshold
TA=25℃, IOUT1=IOUT2=1mA
TA=-40℃ to 85℃, IOUT1=IOUT2=1mA
TA=-40℃ to 85℃, IOUT1or IOUT2=0.1mA
to 300mA
-1.5
-2.5
1.5
2.5
Output Voltage Accuracy
%
-3
3
Maximum Output Current
Output Current Limit
IOUT
ILIM
300
320
mA
mA
500
180
115
240
0.6
780
280
No Load
Ground Current
IQ
µA
No Load, one LDO Shutdown
I
OUT1=IOUT2= 100mA
IOUT=1mA
OUT=100mA
Dropout Voltage
Line Regulation
VIN-VOUT
VLNR
mV
%V
I
55
0.02
110
0.15
VIN=(Vo+0.1)V to 6V, IOUT=1mA
100Hz to 100kHz, COUT=10uF,
IOUT=1mA, CBP=0.01uF
-0.15
35
124
70
Output Voltage Noise
µVrms
100Hz to 100kHz, COUT=10uF,
I
OUT=1mA, CBP=not installed
COUT=2.2uF,IOUT=50mA,CBP=0.01uF,
f=1kHz
Power Supply
COUT=2.2uF,IOUT=50mA,CBP=0.01uF,
f=10kHz
PSRR
ISHDN
dB
60
Ripple Rejection
COUT=2.2uF,IOUT=50mA,CBP=0.01uF,
f=100kHz
46
VEN=0, TA=25℃
0.01
0.1
1
Shutdown Supply Current
Enable Input Threshold
Enable Input Bias Current
µA
V
TA=-40℃ to 85℃
Input high voltage
Input low voltage
VEN=0 or IN, TA=25℃
TA=-40℃ to 85℃
VIH
VIL
1.6
0.4
10
0.1
1
nA
Ω
VOUT Discharge
Resistance in Shutdown
Thermal Shutdown
Temperature
Thermal Shutdown
Hysteresis
Output Capacitor
VEN=0
300
TSHDN
TJ Rising
160
℃
∆TSHDN
15
COUT
IOUT=0 to 300mA
5
2.2uF
DS7559 Ver 1.0 May. 2007
EUP7559
Typical Operating Characteristics
Unless otherwise specified, CIN=COUT=2.2uF, CBP=0.01uF, VIN=3.8V, VENA=VENB=VIN, Io=10mA,
VOUTA=VOUTB=2.85V.
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EUP7559
Typical Operating Characteristics (continued)
Unless otherwise specified, CIN=COUT=2.2uF, CBP=0.01uF, VIN=3.8V, VENA=VENB=VIN, Io=10mA,
VOUTA=VOUTB=2.85V.
Overcurrent Protection
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
100
200
300
400
500
Output Current(mA)
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EUP7559
Typical Operating Characteristics (continued)
Unless otherwise specified, CIN=COUT=2.2uF, CBP=0.01uF,VIN=3.8V, VENA=VENB=VIN, Io=10mA,
VOUTA=VOUTB=2.85V.
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EUP7559
Capacitor Characteristics
Application Note
The EUP7559 is designed to work with ceramic
capacitors on the output ceramic capacitors are the
smallest, least expensive and have the lowest ESR
values (which makes them best for eliminating high
frequency noise). The ESR of a typical 2.2µF ceramic
capacitor is in the range of 10mΩ to 40mΩ, which
easily meets the ESR requirement for stability by the
EUP7559.
The EUP7559 is a high performance, low quiescent
current power management IC consisting of two µCap
low dropout regulators. The first regulator is capable of
sourcing 300mA at output voltages from 1.5V to 3.3V.
The second regulator is capable of sourcing 300mA of
current at output voltages from 1.5V to 3.3V. These
outputs are stable with 2.2uF output capacitor at any
load.
The ceramic capacitor’s capacitance can vary with
temperature. The capacitor type X7R, which operates
over a temperature range of -55°C to +125°C, will only
vary the capacitance to within ±15%. Most large value
Enable A and B
The enable inputs allow for logic control of both output
voltages with individual enable inputs. The EUP7559 is
turned off by pulling the VEN pin low, and turned on by
pulling it high. If this feature is not used, the VEN pin
should be tied to VIN to keep the regulator output on at all
time. To assure proper operation, the signal source used
to drive the VEN input must be able to swing above and
below the specified turn-on/off voltage thresholds listed
in the Electrical Characteristics section under VIL and
VIH.
ceramic capacitors ( 2.2µF) are manufactured with
≈
Z5U or Y5V temperature characteristics. Their
capacitance can drop by more than 50% as the
temperature goes from 25°C to 85°C. Therefore, X7R
is recommended over Z5U and Y5V in applications
where the ambient temperature will change
significantly above or below 25°C.
Noise Bypass Capacitor
External Capacitors
Connecting a 0.01µF capacitor between the BP pin and
ground significantly reduces noise on the regulator
output. This cap is connected directly to a high
impedance node in the bandgap reference circuit. Any
significant loading on this node will cause a change on
the regulated output voltage. For this reason, DC
leakage current through this pin must be kept as low as
possible for best output voltage accuracy. The types of
capacitors best suited for the noise bypass capacitor are
ceramic and film.
Like any low-dropout regulator, the EUP7559 requires
external capacitors for regulator stability. The EUP7559
is specifically designed for portable applications
requiring minimum board space and smallest components.
These capacitors must be correctly selected for good
performance.
Input Capacitor
An input capacitance of 2.2µF or greater is required
≈
between the EUP7559 input pin and ground (the amount
of the capacitance may be increased without limit).
This capacitor must be located a distance of not more
than 1cm from the input pin and returned to a clean
analog ground. Any good quality ceramic, tantalum, or
film capacitor may be used at the input.
Unlike many other LDO’s, addition of a noise
reduction capacitor does not effect the load transient
response of the device.
Output Capacitor
The EUP7559 is designed specifically to work with
very small ceramic output capacitors. A ceramic
capacitor (temperature characteristics X7R, X5R,
Z5U, or Y5V) in 2.2µF to 22µF range with 5mΩ to
500mΩ ESR range is suitable in the EUP7559
application circuit.
The output capacitor must meet the requirement for
minimum amount of capacitance and also have an
ESR (Equivalent Series Resistance) value which is
within a stable range (5mΩ to 500mΩ)
No-Load Stability
The EUP7559 will remain stable and in regulation
with no external load. This is specially important in
CMOS RAM keep-alive applications.
DS7559 Ver 1.0 May. 2007
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EUP7559
Packaging Information
TDFN-8
DETAIL A
MILLIMETERS
INCHES
0.090
SYMBOLS
MIN.
MAX.
0.80
0.05
0.40
3.10
MIN.
0.028
0.000
0.008
0.114
MAX.
0.031
0.002
0.016
0.122
A
A1
b
0.70
0.00
0.20
2.90
D
D1
E
2.30
2.90
3.10
0.114
0.122
E1
e
1.50
0.65
0.059
0.026
L
0.25
0.45
0.010
0.018
DS7559 Ver 1.0 May. 2007
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