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PDF GS2615 Datasheet ( Hoja de datos )

Número de pieza GS2615
Descripción 150mA Low-Noise Ultra Low-Dropout Regulator
Fabricantes Globaltech 
Logotipo Globaltech Logotipo

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GS2615 Hoja de datos, Descripción, Manual
150mA Low-Noise Ultra Low-Dropout Regulator
Product Description
The GS2615 is a 150mA, fixed-output and
adjustable voltage regulator designed to provide
ultra low-dropout and low noise in battery powered
applications.
Using an optimized VIPTM(Vertically Integrated
PNP) process, the GS2615 delivers unequalled
performance in all specifications critical to
battery-powered designs:
Dropout Voltage: Typically 300mV @ 150mA
load, and 7mV @ 1mA load.
Ground Pin Current: Typically 850μA @ 150mA
load, and 75μA @ 1mA load.
Enhanced Stability: The GS2615 is stable with
output capacitor ESR as low as 5m, which allows
the use of ceramic capacitors on the output.
Sleep Mode: Less than 1μA quiescent current
when ON/OFF pin is pulled low.
Smallest Possible Size: SOT-23-5L and micro
SMD packages use absolute minimum board
space.
Precision Output: 1% tolerance output voltages
available.
Low Noise: By adding a 10nF bypass capacitor,
output noise can be reduced to 30μV (typical).
Multiple voltage options, from 2.5V to 5.0V, are
available as standard products. Consult factory for
custom voltages.
Block Diagram
Features
„ Ultra low dropout voltage
„ Guaranteed 150mA output current
„ Smallest possible size (SOT-23-5L, micro
SMD package)
„ Requires minimum external components
„ Stable with low-ESR output capacitor
„ <1μA quiescent current when shut down
„ Low ground pin current at all loads
„ Output voltage accuracy 1%
„ High peak current capability
„ Wide supply voltage range (20V max)
„ Low ZOUT: 0.3typical (10 Hz to 1 MHz)
„ Over temperature/over current protection
„ 40°C to +125°C junction temperature range
„ Custom voltages available
Applications
„ Cellular Phone
„ Palmtop/Laptop Computer
„ Personal Digital Assistant (PDA)
„ Camcorder, Personal Stereo, Camera
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GS2615 pdf
Electrical Characteristics (Adjustable Continue)
Symbol
Parameter
Condition
IL=1mA
IL=10mA
IGND Ground pin current
IL=50mA
en
Output noise
voltage(RMS)
IL=150mA
VON/OFF<0.3V
VON/OFF<0.15V
BW=300Hz to 50kHz
COUT=10μF
CBYPASS=10nF
Min Typ Max
75 110
170
120 220
400
350 600
1000
850 1500
2500
0.01 0.8
0.05 2
50
Unit
µV
Ripple rejection
f=1kHz, COUT=10μF
CBYPASS=10nF
40
dB
Io(SC)
Io(PK)
Note 1:
Note 2:
Note 3:
Short circuit current
RL=0(steady state)
(Note 9)
400
mA
Peak output current
VOUTVO(NOM)-5%
350
mA
“Absolute Maximum Ratings” indicate limits beyond which damage to the component may occur.
Electrical specifications do not apply when operating the device outside of its rated operating
conditions.
The ESD rating of pins 3 and 4 for the SOT-23-5L package, or pins 5 and 2 for the micro SMD
package, is 1kV.
The maximum allowable power dissipation is a function of the maximum junction temperature,
TJ(MAX), the junction-to-ambient thermal resistance, ΘJ-A, and the ambient temperature, TA. The
maximum allowable power dissipation at any ambient temperature is calculated using:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
Note 10:
Where the value of ΘJ-A for the SOT-23-5L package is 220°C/W in a typical PC board mounting and
the micro SMD package is 225°C/W. Exceeding the maximum allowable dissipation will cause
excessive die temperature, and the regulator will go into thermal shutdown.
If used in a dual-supply system where the regulator load is returned to a negative supply, the
GS2615 output must be diode-clamped to ground.
The output PNP structure contains a diode between the VIN to VOUT terminals that is normally
reverse-biased. Reversing the polarity from VIN to VOUT will turn on this diode.
Limits are 100% production tested at 25°C. Limits over the operating temperature range are
guaranteed through correlation using Statistical Quality Control (SQC) methods. The limits are used
to calculate National’s Average Outgoing Quality Level (AOQL).
Dropout voltage is defined as the input to output differential at which the output voltage drops 100
mV below the value measured with a 1V differential.
The ON/OFF input must be properly driven to prevent possible mis-operation. For details, refer to
Application Hints.
The GS2615 has foldback current limiting which allows a high peak current when VOUT>0.5V, and
then reduces the maximum output current as VOUT is forced to ground (see Typical Performance
Characteristics curves).
Exposing the micro SMD device to direct sunlight will cause mis-operation. See Application Hints for
additional information.
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5

5 Page

GS2615 arduino
Typical Performance Characteristics(Continue)
Ripple Rejection
Output Impedance vs Frequency
Output Impedance vs Frequency
Output Noise Density
Output Noise Density
Ground Pin vs Load Current
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