NCP4589DMX30TCG ON Semiconductor, NCP4589DMX30TCG Datasheet - Page 26

• Manufacturer Part Number: NCP4589DMX30TCG
• Description: Low Dropout (LDO) Regulators 300 MA, 3-MODE LDO
• Manufacturer: ON Semiconductor

Specifications of NCP4589DMX30TCG

• Input Voltage Max: 5.25 V
• Output Voltage: 3 V
• Dropout Voltage (max): 230 mV
• Output Current: 400 mA
• Voltage Regulation Accuracy: 1 %
• Maximum Power Dissipation: 400 mW
• Mounting Style: SMD/SMT
• Package / Case: XDFN-6
• Primary Input Voltage: 5.25V
• Output Voltage Fixed: 3V
• Dropout Voltage Vdo: 230mV
• No. Of Pins: 6
• Voltage Regulator Case Style: XDFN
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

in Figure 87.
Input Decoupling Capacitor (C1)
connected as close as possible to the input and ground pin of
the NCP4589. Higher values and lower ESR improves line
transient response.
Output Decoupling Capacitor (C2)
to achieve stable operation of the IC. If tantalum capacitor
is used, and its ESR is high, the loop oscillation may result.
If output capacitor is composed from few ceramic capacitors
in parallel, the operation can be unstable. The capacitor
should be connected as close as possible to the output and
ground pin. Larger values and lower ESR improves dynamic
parameters.
Enable Operation
on and off. The regulator is switched on when CE pin voltage
is above logic high level. The enable pin has internal pull
VIN
A typical application circuit for NCP4589 series is shown
A 1 mF ceramic input decoupling capacitor should be
A 1 mF ceramic output decoupling capacitor is sufficient
The enable pin CE may be used for turning the regulator
1m
C1
Figure 87. Typical Application Schematic
VIN
AE
CE
NCP4589
GND
* 1.0
VOUT
4.0
3.0
2.0
1.0
0.0
0
20
Figure 86. Shutdown, 3.3 V Version D,
TYPICAL CHARACTERISTICS
APPLICATION INFORMATION
40
1m
C2
60
http://onsemi.com
VOUT
80
V
I
I
OUT
OUT
IN
Chip Enable
t (ms)
= 4.3 V
I
100 120 140 160 180 200
OUT
26
= 50 mA
= 300 mA
= 1 mA
down current source. If enable function is not needed
connect CE pin to V
Current Limit
circuit. This type of protection doesn’t limit current up to
current capability in normal operation, but when over
current occurs, the output voltage and current decrease until
the over current condition ends. Typical characteristics of
this protection type can be observed in the Output Voltage
versus Output Current graphs shown in the typical
characteristics chapter of this datasheet.
Output Discharger
GND that is used for faster discharging of the output
capacitor. This function is activated when the IC goes into
disable mode.
Auto ECO and Fast Mode
on supply current and transient response at low output
current. These two modes can be selected by AE pin. If AE
pin is at low level Auto ECO mode is available. Please, see
supply current vs. output current charts.
Thermal
necessary to provide some thermal relief. The maximum
power dissipation supported by the device is dependent
upon board design and layout. Mounting pad configuration
on the PCB, the board material, and also the ambient
temperature affect the rate of temperature rise for the part.
That is to say, when the device has good thermal
This regulator includes fold-back type current limit
The D version includes a transistor between V
The NCP4589 has two operation modes that have impact
As power across the IC increases, it might become
IN
.
6.45
4.30
2.15
0.00
OUT
and