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GS7108 Schematic ( PDF Datasheet ) - GStek

Teilenummer GS7108
Beschreibung Low Noise 150mA LDO Regulator
Hersteller GStek
Logo GStek Logo 




Gesamt 26 Seiten
GS7108 Datasheet, Funktion
Low Noise 150mA LDO Regulator
Features
Low Supply Current ~ 36uA (Typ.)
Low Shutdown Current ~0.1uA (Typ.)
Output Current ~150mA
High Power Supply Rejection Ratio
~78db@1KHz
1.7~6.5V Operation
±1.0% Initial Voltage Accuracy
Low Temperature Drift Coefficient ~50ppm
Line Regulation ~0.02%/V(Typ.)
Low ESR Capacitor ~0.47uF ceramic
capacitor
uDFN4-1x1SOT-23-5SC-82MSOT-23
package
Green Product (RoHS, Lead-Free,
Halogen-Free Compliant)
Applications
Portable communication equipment
Notebook Computer
Battery Powered Systems
GS7108
General Description
The GS7108 is a CMOS linear regulator. It is
featuring ultra-high power supply rejection ratio,
low output voltage noise, low dropout voltage, low
quiescent current and fast transient response. It
guarantees delivery of 150mA output current, and
supports preset 1.2V, 1.3V, 1.5V, 1.8V, 1.85V,
1.9V, 2.0V, 2.3V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V,
2.9V, 3.0V, 3.1V, 3.3V, 3.8V, 4.0V, 4.2V, 4.5V,
4.75V, 4.8V, 5.0V output voltage versions.
Based on its low quiescent current consumption
and its less than 1uA shutdown mode, the
GS7108 is ideal for battery- powered applications.
The high power supply rejection ratio of the
GS7108 holds well for low input voltages typically
encountered in battery- operated systems. The
regulator is stable with small ceramic capacitive
loads (0.47µF typical).
Typical Application
0.47uF
GS7108
VDD VOUT
EN
GND
0.47uF
Figure.1 Typical Application of GS7108
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Green Solution Technology Co.,LTD.
Rev.:1.71
1
Nov-14






GS7108 Datasheet, Funktion
Low Noise 150mA LDO Regulator
GS7108
Dropout Voltage (Note 5)
VDROP
IOUT=150mA
1.2V≤VOUT<1.5V
1.5V≤VOUT<1.7V
1.7V≤VOUT<2.0V
2.0V≤VOUT<2.5V
2.5V≤VOUT<2.8V
2.8V≤VOUT3.3V
3.3V≤VOUT4.0V
4.0V≤VOUT5.0V
0.50 0.62
0.38 0.47
0.34 0.42
0.28 0.36
0.22 0.30
0.21 0.27
0.20 0.26
0.19 0.25
V
Line Regulation
VLNR
VIN = VOUT +0.5V to 6.5V,
IOUT=1mA
0.02 0.10 %/V
Load Regulation
VLDR
VIN = VOUT+1V,
IOUT=1mA to 150mA
15 30 mV
Ripple Rejection Rate
VIN=MAX{VOUT+1.0V, 3V}, Ripple
PSRR
78 dB
0.2Vp-p, IOUT=30mA, f=1KHz
Limit Current
Ilim VEN=VIN
260 mA
Short Current
Ishort VOUT=0V
35 mA
EN Input Voltage High
VENH
1.5 V
EN Input Voltage Low
VENL
0.3 V
CL Auto-Discharge Resistance
(Note 6)
Rdischg VIN=4.0V, VEN=0V
100 Ω
Temperature Drift
VOUT /TA IOUT=1mA,
TA = -40°C to +85°C
50 ppm/°C
Note 1. Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the
device. These are for stress ratings. Functional operation of the device at these or any other
conditions beyond those indicated in the operational sections of the specifications is not implied.
Exposure to absolute maximum rating conditions for extended periods may remain possibility to
affect device reliability.
Note 2. Devices are ESD sensitive. Handling precaution recommended.
Note 3. θJA is measured in the natural convection at TA=25°C on a high effective thermal conductivity test
board (4 Layers, 2S2P) of JEDEC 51-7 thermal measurement standard.
Note 4. The device is not guaranteed to function outside its operating conditions.
Note 5. The dropout voltage is defined as VIN - VOUT, which is measured when VOUT is 98%*VOUT.
Note 6. The output voltage Auto discharge function is optional.
Green Solution Technology Co.,LTD.
Rev.:1.71
6
Nov-14

6 Page









GS7108 pdf, datenblatt
Low Noise 150mA LDO Regulator
GS7108
VOUT=1.8V, VDD=2.8V, IOUT=1mA
VOUT=2.5V, VDD=3.5V, IOUT=1mA
VOUT=2.8V, VDD=3.8V, IOUT=1mA
VOUT=3.0V, VDD=4.0V, IOUT=1mA
Input Transient Response
VOUT=1.8V, VDD=2.8V~3.8V~2.8V, IOUT=30mA
tr=tf=5us
VOUT=2.5V, VDD=3.5V~4.5V~3.5V, IOUT=30mA
tr=tf=5us
Green Solution Technology Co.,LTD.
Rev.:1.71
12
Nov-14

12 Page





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